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View Full Version : DIY: B6 A4 - Symphony 2 to Symphony 2+ Upgrade



Undisputed
10-09-2009, 04:22 PM
This is a very easy mod. I searched but never found an actual DIY for it. I found plenty for the RNS-E swap, but none for this one. A few people asked me to document the change so here it is.
Not too much needed as far as tools:
Got my symphony 2 to 2+ harness:
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1080.jpg
Antenna Adapter
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1081.jpg
Radio Keys
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1082.jpg
And most importantly, the radio!
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1079.jpg

Here is the before pic: http://i516.photobucket.com/albums/u325/mrallworld/DSCN1084.jpg
Yes I'm missing the trim. But Matt at OCarbon is going to remedy that pretty soon. [:D]

Step 1: Insert the radio keys. You need four of them. One for each corner. The notch on the key goes toward the center of the radio as shown. Insert them until they click. If you put them in backwards, you'll know, and they'll be hard to get out.
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1085.jpghttp://i516.photobucket.com/albums/u325/mrallworld/DSCN1086.jpg

Keys are all in:
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1087.jpg

Step 2: After the keys are all in, pull on all four corners with even force to get the radio out.
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1088.jpg

If necessary, insert a finger into the tape deck and pull gently.
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1089.jpg

Step 3: After the unit is out, you'll see how the plugs are connected in the back. The 2 small plugs in this picture are for the antennas. You will need the adapter to connect the antenna from to the back of the Symphony 2+ because it uses a different type of connector.
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1090.jpg

In this picture you see the 3 connectors that need to be plugged into the new adapter. They're very easy to remove. Unplug them and attach them into the appropriate ends of the new harness. They only fit in one way so it's foolproof. http://i516.photobucket.com/albums/u325/mrallworld/DSCN1091.jpghttp://i516.photobucket.com/albums/u325/mrallworld/DSCN1092.jpg

Step 4: Attach the Quadlock connector onto the back of the Symphony 2+. This is also foolproof because it only fits on one way. Remember that the connector has a lock on it to hold it in place. (Hence the name) so, here it is in the locked position. http://i516.photobucket.com/albums/u325/mrallworld/DSCN1093.jpg.

You'll need to unlock it to put it onto the radio: http://i516.photobucket.com/albums/u325/mrallworld/DSCN1094.jpg

Step 5: Unlock it, attach it to the back of the radio, and lock it once it's in place.

Step 6: Attach the antenna adapter to the open end of the antenna connection. Once again, it only fits on one way.
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1097.jpg

Step 7: Once all of the connections are in place, you should hear the internal CD changer cycling. Push the on button and you'll come to this screen so that you can enter the code.
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1098.jpg

Step 8: Each button on the side of the screen corresponds with a number position in the code sequence. You just push the button for the number that you want to enter and use the right knob to scroll to the proper number. After you have entered all of the numbers, you will come to the radio screen.
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1101.jpg

Step 9: Remove the radio keys from the old unit. Now obviously you can't pull the keys out because then you could never pull the radio from the car. there is a very small tab inside the hole that is by the barcode in this picture. Don't worry, you'll see it. You need to push down on that tab and the key will be able to be pulled out. It, will come out very easily.
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1103.jpg

Step 10: Enjoy!!
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1102.jpg

Although it looks lengthy, it only takes about 15 min or so. i just wanted to make sure that I took plenty of pictures so that it would be as helpful as possible. Hopefully this will help somebody out.

BTW, I love the Symphony 2+. It looks great and sounds far better than the Symphony 2. The only gripe is that it looks more grey than black so there is a bit of a color mismatch. I'll deal with it though.

JBM
10-09-2009, 05:11 PM
question where did you get the harness from? Also is this the A3 or A4 symphony

Jeff
10-09-2009, 05:20 PM
Any actual noticeable difference in sound quality between the two? The Symphony II's SNR is very low and the output has always been muddy, I had to use a line driver and DSP in order to clean it up.

Undisputed
10-09-2009, 05:32 PM
question where did you get the harness from? Also is this the A3 or A4 symphony

It's the A4 Symphony Non-Bose. I'll send you a PM about the harness because I got it from a non-sponsor.

my1stturbo
10-09-2009, 05:34 PM
I've wanted to do this since I got my car, only reason I've been a little gun-shy is that I heard your radio reception takes a serious nose dive.

AudiMat
10-09-2009, 05:36 PM
Looks good... i'm looking to do this as well, thanks for the DIY.

Its interesting to see an "Off" button on the climate control... mine dosent have that, i've got another recirculation button with an "A" above it for auto recirc.

EDIT: if you get a chance, can you post up a night pict... i'm curious to see what it looks like with everything lit up.

Undisputed
10-09-2009, 05:39 PM
Any actual noticeable difference in sound quality between the two? The Symphony II's SNR is very low and the output has always been muddy, I had to use a line driver and DSP in order to clean it up.

The sound quality is much much better than the Symphony. The clarity is greatly improved. There is also a hidden EQ that I have not had the time to access. If you guys want, I'll add that to this thread also.

I saw alot of talk about the fact that the FM signal quality is poor when you do this conversion because the antenna is no longer amplified. I have not had this problem. My FM reception is great, but it may be that I'm in a good area.

Undisputed
10-09-2009, 05:39 PM
Looks good... i'm looking to do this as well, thanks for the DIY.

Its interesting to see an "Off" button on the climate control... mine dosent have that, i've got another recirculation button with an "A" above it for auto recirc.

EDIT: if you get a chance, can you post up a night pict... i'm curious to see what it looks like with everything lit up.

I'll put up a pic tonight.

Jeff
10-10-2009, 02:28 AM
The sound quality is much much better than the Symphony. The clarity is greatly improved. There is also a hidden EQ that I have not had the time to access. If you guys want, I'll add that to this thread also.

I saw alot of talk about the fact that the FM signal quality is poor when you do this conversion because the antenna is no longer amplified. I have not had this problem. My FM reception is great, but it may be that I'm in a good area.

How much did you end up paying for the new head unit? Sounds interesting.

NyteEscape
10-10-2009, 02:35 AM
could you pm me where you got the harness and how much? i've been looking into doing this for a while now, but lost the link for the harness i found a while back.

Undisputed
10-10-2009, 08:41 AM
The HU cost me $155 shipped on eBay. I got lucky.

A4Dit
10-10-2009, 08:47 AM
You can get the harness at Europarts.com. It will run you about $75 for everything. Not a bad deal if you get the head unit at a good price. I paid $285 off of ebay for the unit, $50 to have the dealer get me the code and $75 for the harness. It set me back roughly $400 dollars and was worth every dollar. The radio reception isn't as good as the SymII I can attest, but the clarity on good station or a CD is amazing. And the color must be a model year issue because mine matches the rest of my interior. Here are some pics-
Day
http://i14.photobucket.com/albums/a302/Jimmy379/FloridaGerman-08017.jpg

Night
http://i14.photobucket.com/albums/a302/Jimmy379/A4Nightshots-11-11-08087.jpg

Undisputed
10-10-2009, 09:03 AM
I forgot to take a pic last night. Lol

and I didn't want to put that info out there for the reasons that I stated above. [headbang]

A4Dit
10-10-2009, 09:14 AM
^Are you serious? You can recommend to other forum members where they can source a part to aide in their install. I wasn't trying to advertise anybody. As far as I know they are the only company that manufactures that harness. You mentioned ebay and they are not a form sponsor. [rolleyes]

Undisputed
10-10-2009, 09:19 AM
I'm just trying to make sure that i'm not violating any rules. That's all. I know that there have been some recent changes. That's all. As long as the mods don't mind, then I don't care. As far as eBay, I bought it from a person, not a company.

n7plus1
10-10-2009, 12:21 PM
great writeup, they need to sticky this.

SeKKeY
10-10-2009, 12:28 PM
excellent, this might be the route i take if my radio keeps peeling..

AudiMat
10-10-2009, 02:19 PM
LOL... what happened to the "night" pict? I'm curious if the red is the same and if the bigger digital display is overkill at night.

pkny
10-10-2009, 02:27 PM
THanks for the DIY, rep to you.
I really like the modern look of that radio compared to the symphony II. The Aux port and MP3 playback is a huge plus

NyteEscape
10-10-2009, 02:45 PM
THanks for the DIY, rep to you.
I really like the modern look of that radio compared to the symphony II. The Aux port and MP3 playback is a huge plus

aux port? as in i can just run a straight stereo cable to my mp3 player/phone from the back of the headunit?

Tone-Dogg
10-10-2009, 03:05 PM
Nice job, thank you for the DYI

A4twin
10-10-2009, 04:06 PM
What kind of aux. Input does the radio have
TIA

Gails Woofel
10-10-2009, 05:15 PM
I did this as well awhile ago, my reception sucks, cds sound great...anyone figure out how to get the AUX to work??

CaRtharsis
10-10-2009, 09:17 PM
ANyone have problems with reception fading in and out. Some days it works fine and others there's nothing.

diagnosticator
10-10-2009, 10:05 PM
Any actual noticeable difference in sound quality between the two? The Symphony II's SNR is very low and the output has always been muddy, I had to use a line driver and DSP in order to clean it up.

Yes, the Sym II+ sounds a lot better than the Sym II, with more dynamic response and better base, due to the higher power/better spec amp.
Together with the Infinity Kappa front speakers I added the difference is amazing.

diagnosticator
10-10-2009, 10:06 PM
I did this as well awhile ago, my reception sucks, cds sound great...anyone figure out how to get the AUX to work??

If you press the CD button the signal input cycles between CD and AUX input.

diagnosticator
10-10-2009, 10:14 PM
ANyone have problems with reception fading in and out. Some days it works fine and others there's nothing.

The only solution for this (broadcast FM, ) is to retrofit the antenna amplifiers that go with the Sym II+. The Sym II uses "Diversity Switching" and swaps the active antenna HF to the HU according to signal strength. The Sym II+ uses "Phase Diversity" and switches between one or the other of the pair of digital tuners in the HU according to received signal quality.

The other option, the one I use, is the OEM SAT receiver/tuner that connects seamlessly with the HU and provides for CD audio quality and displays channel and artist info on the HU and DIS.

diagnosticator
10-10-2009, 10:16 PM
What kind of aux. Input does the radio have
TIA

Low level AUX input.

dsstultz
10-10-2009, 10:24 PM
Does this work with the bose system?

Undisputed
10-11-2009, 12:33 AM
Diagnosticator you're the man. And dsstultz, yes it will work with Bose. You just need a different adapter. Still plug and play though.

diagnosticator
10-11-2009, 02:36 AM
The HU cost me $155 shipped on eBay. I got lucky.


At that price, it was almost free![:D]

diagnosticator
10-11-2009, 02:47 AM
The sound quality is much much better than the Symphony. The clarity is greatly improved. There is also a hidden EQ that I have not had the time to access. If you guys want, I'll add that to this thread also.

I saw alot of talk about the fact that the FM signal quality is poor when you do this conversion because the antenna is no longer amplified. I have not had this problem. My FM reception is great, but it may be that I'm in a good area.


Please post up about the "hidden EQ", I don't know about that. On another item, does your HU allow for the display of the current road speed, and or time? My HU has those selections in the setup menu, but according to an Audi TSB, those features are not supported but will be in a later firmware version. Also, I am trying to find out if the firmware can be updated via an update CD ROM, any idea if this is possible?

diagnosticator
10-11-2009, 02:51 AM
LOL... what happened to the "night" pict? I'm curious if the red is the same and if the bigger digital display is overkill at night.



The dash illumination including the HU, self adjusts to the ambient lighting level. In addition, there is the manual lighting intensity adjustment on the instrument cluster.

Undisputed
10-11-2009, 11:15 AM
It was definately a steal at that price. The night-time illumination matches perfectly. I got a couple of quick Iphone pics last night.
http://i516.photobucket.com/albums/u325/mrallworld/b502df1f.jpg
http://i516.photobucket.com/albums/u325/mrallworld/c7a959ad.jpg

A seamless blend that doesn't overpower in any way.

I'm going to go out and see if I can find the hidden EQ. As far as speed display I don't know. It does show the time though. If I remember correctly you have to push the "info" button and the option comes up on the right side of the screen.

Undisputed
10-11-2009, 12:24 PM
Ok, I read what I found about the hidden EQ and it's for the A6 stereo not this one. Also the clock option is accessed by pressing the "Menu" button. Not info.

I do like the single click on the volume knob for mute though. Very useful for the drive-thru.

diagnosticator
10-11-2009, 02:06 PM
I can't get my HU to display the clock, even though there is a menu choice for that. When I select the clock option nothing changes. Does your HU display the time? How about the other menu choices?

NyteEscape
10-11-2009, 02:56 PM
Low level AUX input.

what exactly is a low leval aux? couldn't really find a good definition on wiki.

diagnosticator
10-11-2009, 03:57 PM
what exactly is a low leval aux? couldn't really find a good definition on wiki.

It is an unamplified audio signal. Usually 2 to 4 volts audio frequency, aka Preamp level. Line level signals are post amp and drive the speakers.

diagnosticator
10-11-2009, 04:35 PM
Ok, I read what I found about the hidden EQ and it's for the A6 stereo not this one. Also the clock option is accessed by pressing the "Menu" button. Not info.

I do like the single click on the volume knob for mute though. Very useful for the drive-thru.


If you hold the menu button down for a few seconds the display will show a diagnostics view and you can see the signal strength and other system values. I am curious if your HU shows more/different info than my HU does.

diagnosticator
10-11-2009, 04:54 PM
BTW, +Rep to you for this excellent write up!

Stone825
10-11-2009, 04:58 PM
Yep +rep from me as well

NyteEscape
10-11-2009, 05:10 PM
It is an unamplified audio signal. Usually 2 to 4 volts audio frequency, aka Preamp level. Line level signals are post amp and drive the speakers.

so what exactly can i hookup to that? is there a straight stereo input for like a 3.5mm plug or rca or is it something else entirely?

maurizio
10-11-2009, 05:19 PM
good stuff. do these newer HU have issues with the knobs and buttons peeling away too? looks like the same coating...

Undisputed
10-11-2009, 05:38 PM
Thanks for the rep guys. I'm just excited that I contributed some worthwhile info! [:D]

As for the clock, this is what I see when I push the "Menu" button
http://i516.photobucket.com/albums/u325/mrallworld/57b2ccf2.jpg
Then I can use the right knob to select off or on.
Here is a shot with the clock option set to on
http://i516.photobucket.com/albums/u325/mrallworld/6c7a5abe.jpg

Here is the "Tone" button menu
http://i516.photobucket.com/albums/u325/mrallworld/277a12ed.jpg

And lastly there is a "Seek" option after pressing the "Menu" button. It allows to choose between Normal and Comfort. Any idea what those mean?
http://i516.photobucket.com/albums/u325/mrallworld/c005c416.jpg

diagnosticator
10-11-2009, 06:07 PM
so what exactly can i hookup to that? is there a straight stereo input for like a 3.5mm plug or rca or is it something else entirely?

My custom harness was built by "TeddyBGame", and has RCA connectors for the AUX imputs.

diagnosticator
10-11-2009, 06:13 PM
^Are you serious? You can recommend to other forum members where they can source a part to aide in their install. I wasn't trying to advertise anybody. As far as I know they are the only company that manufactures that harness. You mentioned ebay and they are not a form sponsor. [rolleyes]
The harness is available from Kufatec also.

NyteEscape
10-11-2009, 06:23 PM
My custom harness was built by "TeddyBGame", and has RCA connectors for the AUX imputs.

is your custom harness the actual harness that plugs from the car into the sym2+ or another portion that connection to the low level input?

sorry for the numerous questions, just that this is the only thing that has held me back from upgrading.

diagnosticator
10-11-2009, 07:31 PM
I've wanted to do this since I got my car, only reason I've been a little gun-shy is that I heard your radio reception takes a serious nose dive.

If broadcast FM is important to you, then the Phase Diversity dual amped antennas that go with the Sym II+ can be retrofitted to address this problem. Otherwise, the received signal quality may or may not be a problem depending on the regional distribution of stations you listen to and the topography of the listening area.

diagnosticator
10-11-2009, 07:37 PM
aux port? as in i can just run a straight stereo cable to my mp3 player/phone from the back of the headunit?

The AUX input is incorporated in the harness/quadlock connector that plugs into the HU

JBM
10-11-2009, 07:37 PM
^^^ where would I get that?

jgood2709
10-11-2009, 07:43 PM
Can anyone verify that a car with the Bose system will sound better with the II+ when compared to the II?

Also, does this AUX input mean I can use a cable with red+white (RCA?) to a standard headphone jack? I'd be happy to hear this because I'm using one of those cassette tape to headphone jack adapters for my iPod, and there's too much white noise at high volumes. This may have been answered already; just trying to get some clarity.

diagnosticator
10-11-2009, 08:07 PM
^^^ where would I get that?

You need to fill the pin locations in the quadlock connector with the wires and wire terminals that insert into the quadlock housing at the AUX input pin locations. Refer to the pinout diagram for the SymII+ quadlock connector.

diagnosticator
10-11-2009, 08:20 PM
is your custom harness the actual harness that plugs from the car into the sym2+ or another portion that connection to the low level input?

sorry for the numerous questions, just that this is the only thing that has held me back from upgrading.


Yes, my custom built harness connects the ISO connectors on the main dash harness to the quadlock connector that plugs into the Sym II+ HU, converting the Sym II ISO connectors to the Sym II+ quadlock connector. The custom harness includes the inputs for the OEM SAT receiver/tuner and the RCA connectors for the AUX input connections to the quadlock connector to the HU.
The AUX connectors can be whatever type of connector you need to use for your AUX signal source, either RCA or 3.5mm stereo according to the output connector of the signal source, IE, iPod or other.

Undisputed
10-11-2009, 08:37 PM
I tried to email Teddy before I bought this radio and never got an answer back.

diagnosticator
10-11-2009, 10:35 PM
Can anyone verify that a car with the Bose system will sound better with the II+ when compared to the II?

Also, does this AUX input mean I can use a cable with red+white (RCA?) to a standard headphone jack? I'd be happy to hear this because I'm using one of those cassette tape to headphone jack adapters for my iPod, and there's too much white noise at high volumes. This may have been answered already; just trying to get some clarity.

I believe that it will sound better because the HU is the signal source so any improvemnt in the audio quality carries thrrough the Bose amps too.

Yes, the AUX input can be configured with whatever connectors you need to connect your AUX signal source be it an iPod or whatever.

diagnosticator
10-11-2009, 10:47 PM
I tried to email Teddy before I bought this radio and never got an answer back.

He bounces between offices in the US and Europe, so it's hard to establish comms with him. I don't know if he is still building harnesses or not.

Jeff
10-14-2009, 01:55 AM
Yes, the Sym II+ sounds a lot better than the Sym II, with more dynamic response and better base, due to the higher power/better spec amp.
Together with the Infinity Kappa front speakers I added the difference is amazing.

I've been trying to find the SNR and the vdc/thd levels on the Audi units for a while, know anywhere that I can get them?

diagnosticator
10-14-2009, 04:43 AM
I've been trying to find the SNR and the vdc/thd levels on the Audi units for a while, know anywhere that I can get them?


I don't know of any published specs, but the Sym II+ displays SNR is the Menu button is held down. I don't know if that is relevent to official specs however.

Maybe Matsushita or Blau Punkt could provide the specs.

hamradiolocator
10-14-2009, 05:29 AM
Thanks for sharing pics.

A4twin
10-14-2009, 07:35 PM
So has anybody connect their ipods/iphone to their symphony II+? if so, can someone point me to the right direction
TIA

DUX-men
11-08-2009, 03:04 PM
This is a very easy mod. I searched but never found an actual DIY for it. I found plenty for the RNS-E swap, but none for this one. A few people asked me to document the change so here it is.
Not too much needed as far as tools:
Got my symphony 2 to 2+ harness:
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1080.jpg
Antenna Adapter
http://i516.photobucket.com/albums/u325/mrallworld/DSCN1081.jpg


Excuse, I can not so attentive but where to find these adapters?
[=(]

my1stturbo
11-25-2009, 09:14 PM
If broadcast FM is important to you, then the Phase Diversity dual amped antennas that go with the Sym II+ can be retrofitted to address this problem. Otherwise, the received signal quality may or may not be a problem depending on the regional distribution of stations you listen to and the topography of the listening area.

Would you be able to point me in the right direction on how to achieve this? My brothers friend has done the swap in his B6 and told me the reception is pretty bad locally, though I haven't verified myself and I haven't followed up since about a week after he put it in.

Best thing I've found so far is this:

http://audiforum.us/cables-adapters-antennas/6292-converting-symphony-ii-antenna-system-use-rns-e.html

Gails Woofel
01-04-2010, 02:34 PM
If you press the CD button the signal input cycles between CD and AUX input.

I do know where that is, but how do you set up an ipod to utilize aux input.

MOLDOVANOS
01-19-2010, 07:20 PM
I do know where that is, but how do you set up an ipod to utilize aux input.

I wonder the same thing??

dougyfresh
01-20-2010, 05:46 AM
I do know where that is, but how do you set up an ipod to utilize aux input.

You need to wire the harness accordingly. See \/


Yes, my custom built harness connects the ISO connectors on the main dash harness to the quadlock connector that plugs into the Sym II+ HU, converting the Sym II ISO connectors to the Sym II+ quadlock connector. The custom harness includes the inputs for the OEM SAT receiver/tuner and the RCA connectors for the AUX input connections to the quadlock connector to the HU.
The AUX connectors can be whatever type of connector you need to use for your AUX signal source, either RCA or 3.5mm stereo according to the output connector of the signal source, IE, iPod or other.

winreboot
01-21-2010, 02:26 PM
I just got my harness and it work like a dream. After $65 for key code from dealer. Grrr... Ok Just like everyone says, the audio is better, looks nicer etc..
But the radio quality goes down the drain..

I have 04 Avant and it has the fin on the roof. I'm assuming it's the antenna, and I notice an extra cable that is not used after conversion.

My question: Can I reuse the original install anntenn plug?

http://farm3.static.flickr.com/2717/4294000580_c382b183ed_o.jpg

http://farm3.static.flickr.com/2767/4294000482_ffdf5bce63_o.jpg

http://farm5.static.flickr.com/4014/4293258217_4745573146_o.jpg

diagnosticator
01-21-2010, 09:52 PM
The double input plug is for two independent HF antennas, HF1 and HF2. These are provided by the associated Phase Diversity antenna amps on the B7. Since the B6 uses a different Antenna setup, there is only one HF antenna available.

The gold colored Fakra connector fits the gold colored input on the Sym II, it is used to send the received signal strength "Z1", back to the antenna switching amp on the B6. The Sym II+ does not have that functional output, so there is no mating jack on the HU. It is left unplugged.

diagnosticator
01-21-2010, 09:58 PM
I do know where that is, but how do you set up an ipod to utilize aux input.

the Sym II + quadlock harness connector has the input pins for the signal from the Aux device line out, you can use whatever connector plug style needed for the device used as the signal source.

On the Quadlock harness connector, the T12f (Blue,) Aux inputs are Pin 1=Aux in Left channel, Pin 3 = Aux in ground, Pin 7 = Aux in Right channel. Then the Sym II+ HU must be recoded to activate the AUX input.

BTW, Audi has an iPod base plate available.

Mani
01-22-2010, 04:35 PM
Symphony II to Symphony II+ upgrade on 2003 Audi A4. My car doesn't have SAT pre-wired. If I want to go for Sat, do I need to buy an antenna in addition to the receiver http://www.ecstuning.com/Audi-B6_A4-FWD-V6_30v/Interior/Stereo/ES435915/ ?

Thanks in advance...


I have the 50 ohm to Dual FAKRA antenna adapter ... not sure if I need another antenna for XM radio...

Casius
02-21-2010, 01:54 PM
I just did this upgrade and indeed the Sym II+ sounds WAY better. However my FM signal took a beating :( I have the Kufatek adapter and it has a plug for both the antenna connectors. Should I maybe leave the gold colored one disconnected?

Something really weird about mine though, I plugged it in the first time and the reception for FM was crystal clear, I looked at the diagnostic screen and I had excellent reception and it said Antenna 1 ON. I started the car and since then even when it's off the reception is Mono and Antenna 1 and 2 are off :( Any ideas? I also don't have clock and scan in my menu, very strange.

How much could I get the right antenna for the sym II+ for?

my1stturbo
02-22-2010, 07:06 AM
How much could I get the right antenna for the sym II+ for?

Really curious about this too. It's probably the only thing holding me up from doing the swap at the moment.

Casius
02-22-2010, 01:05 PM
Symphony II to Symphony II+ upgrade on 2003 Audi A4. My car doesn't have SAT pre-wired. If I want to go for Sat, do I need to buy an antenna in addition to the receiver http://www.ecstuning.com/Audi-B6_A4-FWD-V6_30v/Interior/Stereo/ES435915/ ?

Thanks in advance...


I have the 50 ohm to Dual FAKRA antenna adapter ... not sure if I need another antenna for XM radio...

I want to know this too

dgmorr
04-25-2010, 07:01 PM
Hi there,

There is a local guy selling the Sym II+ unit with the cables from his '08 A4. Will this cable plug into the 2002 A4 Sym II, or will I still need some sort of other adapter?

This is the cable he is including.
http://img265.imageshack.us/img265/1792/sym2.jpg

diagnosticator
04-25-2010, 07:12 PM
The included cable looks to me like the harness adapter needed to convert the ISO harness connectors in your '02 to the Quadlock connector that plugs into the Sym II+.

Undisputed
04-25-2010, 07:18 PM
^ I agree. You'll also need the antenna adapter.

dgmorr
04-25-2010, 07:19 PM
Is there some special converter harness? From what the seller is saying, it is just the regular cable from his '08 A4. I've been doing a lot of searching but can't quite find what I am looking for. The seller doesn't seem to know much about it either.

Where can I get the antenna adapter? My search results say europarts.com and europarts.us - both of which do not work.

thanks.

diagnosticator
04-25-2010, 07:20 PM
I just did this upgrade and indeed the Sym II+ sounds WAY better. However my FM signal took a beating :( I have the Kufatek adapter and it has a plug for both the antenna connectors. Should I maybe leave the gold colored one disconnected?

Something really weird about mine though, I plugged it in the first time and the reception for FM was crystal clear, I looked at the diagnostic screen and I had excellent reception and it said Antenna 1 ON. I started the car and since then even when it's off the reception is Mono and Antenna 1 and 2 are off :( Any ideas? I also don't have clock and scan in my menu, very strange.

How much could I get the right antenna for the sym II+ for? I don't know the cost. You would need to get two antenna amps as used on the B7, and connect each amp to the in window antennas. Then run each amplified RF signal wire to the HU. I am using the original B6 antenna feeding just one of the two RF signal inputs on the Sym II+, FM is not perfect, but it is good enough for me, since I hardly never listen to FM.

diagnosticator
04-25-2010, 07:22 PM
Is there some special converter harness? From what the seller is saying, it is just the regular cable from his '08 A4. I've been doing a lot of searching but can't quite find what I am looking for. The seller doesn't seem to know much about it either.

Where can I get the antenna adapter? My search results say europarts.com and europarts.us - both of which do not work.

thanks. Kufatec.de

diagnosticator
04-25-2010, 07:27 PM
Is there some special converter harness? From what the seller is saying, it is just the regular cable from his '08 A4. I've been doing a lot of searching but can't quite find what I am looking for. The seller doesn't seem to know much about it either.

Where can I get the antenna adapter? My search results say europarts.com and europarts.us - both of which do not work.

thanks. I did not know the B7 used converted ISO harness connectors to the Sym II+. That is the only way the cable shown would be used in the B7. The pic shows three ISO connectors that are the right colors, and they all go to the quadlock connector shown to the right., That is also the only harness converter required to install the Sym II+ into a B6 (+ antenna adapter)

diagnosticator
04-25-2010, 07:34 PM
Symphony II to Symphony II+ upgrade on 2003 Audi A4. My car doesn't have SAT pre-wired. If I want to go for Sat, do I need to buy an antenna in addition to the receiver http://www.ecstuning.com/Audi-B6_A4-FWD-V6_30v/Interior/Stereo/ES435915/ ?

Thanks in advance...


I have the 50 ohm to Dual FAKRA antenna adapter ... not sure if I need another antenna for XM radio... Yes, a separate SAT antenna is connected to the SAT receiver/tuner module. You also need the SAT receiver/tuner module besides the SAT ready HU.

diagnosticator
04-25-2010, 07:44 PM
I just got my harness and it work like a dream. After $65 for key code from dealer. Grrr... Ok Just like everyone says, the audio is better, looks nicer etc..
But the radio quality goes down the drain..

I have 04 Avant and it has the fin on the roof. I'm assuming it's the antenna, and I notice an extra cable that is not used after conversion.

My question: Can I reuse the original install anntenn plug?

The roof antenna is the antenna for the SAT receiver/tuner.

AvantJunkie
04-27-2010, 04:48 PM
Is there any way to visually tell the difference between the bose harness and the non-bose harness? Color of connectors? Different pin assignments? I did a quick search, but couldn't find anything conclusive. The reason I ask is that the guy I bought mine from wasn't exactly sure if the harness he supplied me was the bose or not. I don't have the code for my stock HU, so I'd rather not pull it out to check or I could be left without a stereo. Any help is greatly appreciated...TIA.

diagnosticator
04-27-2010, 08:32 PM
The Bose harness adapter, will have four channels line out to the external amps. A non Bose uses a different set of terminals in the quadlock connector to drive the two front channels directly from the HU. and the two rear channels from line level. It's one or the other, The diagram on the Sym II+ case, should clarify this.

AvantJunkie
04-27-2010, 08:43 PM
^^Thank you!!

AvantJunkie
04-27-2010, 10:16 PM
The Bose harness adapter, will have four channels line out to the external amps. A non Bose uses a different set of terminals in the quadlock connector to drive the two front channels directly from the HU. and the two rear channels from line level. It's one or the other, The diagram on the Sym II+ case, should clarify this.

So after reading your explanation and checking out the diagram on the unit itself, I decided to pull out my stock HU and see for myself what exactly the connections looked like. And exactly like you explained, they're are only two connectons on the back of my stock HU (Bose system), as opposed to the four connections comming off the quadlock non-Bose harness that was included with my II+. Correct me if I'm wrong, but I believe it's safe to say that for those of you who are unsure what harness you have, if it has the four connectors(brown, red, and two black) coming off of the quadlock, it is the non-Bose harness.

diagnosticator
04-27-2010, 11:59 PM
So after reading your explanation and checking out the diagram on the unit itself, I decided to pull out my stock HU and see for myself what exactly the connections looked like. And exactly like you explained, they're are only two connectons on the back of my stock HU (Bose system), as opposed to the four connections comming off the quadlock non-Bose harness that was included with my II+. Correct me if I'm wrong, but I believe it's safe to say that for those of you who are unsure what harness you have, if it has the four connectors(brown, red, and two black) coming off of the quadlock, it is the non-Bose harness.

Sorry if my reply was confusing, the Bose system has four channels line out to the external audio amps, the non Bose, has the two front channels driven by the HU directly, and the two rear channels as line level outputs to the rear channel/Subwoofer amp.

For a Bose setup, the quadlock connector terminals described next are populated with a wire to the ISO connectors at the other end of the harness adapter:

T12f/5 Blue, Bose coding to ground.

T12/3 Green, Left front channel line out to amp R12

T12/5 Left Rear channel line out to amps R44/R12

T12/8 Signal ground to amps R44/R12

T12/9 Right Front line out to amp R12

T12/11 Right Rear line out to amps R12/R44

T12/7 K line for Diagnostics to ISO connector

T8h/9 CAN buss High Infotainment

T8h/10 CAN Buss Low Infotainment

T8h/14 Ground connection via central convenience control module. Anti Theft warning system.

T8h/15 30, +12vdc Jumpered to T8h/16, Anti Theft Warning System.


The above connections are for the Bose setup, the other listed connections must be present and connected to the appropriate ISO terminal connector so that the Sym II+ will boot up and then be able to be turned ON. The K line diagnostic connection must be connected so that the HU can be coded properly after installation.

AvantJunkie
04-28-2010, 10:37 AM
Thanks for the clarification! I'm obviously more of a visual person and was having a little difficulty applying your description to what I was actually looking at. Now I just have to order the right harness--Thanks again!

kerNol
04-28-2010, 04:11 PM
So what harness would I need to convert my Bose Symphony II in my 04 B6 over to a Symphony II+, I currently have the factory SAT setup and would like to keep it. Where or who can I get the adapter harness from?

AvantJunkie
04-28-2010, 05:05 PM
So what harness would I need to convert my Bose Symphony II in my 04 B6 over to a Symphony II+, I currently have the factory SAT setup and would like to keep it. Where or who can I get the adapter harness from?

Here's where I just ordered mine from-**-> https://www.euro-parts.us/product.php?productid=16197&cat=263&page=1

A4natomical
06-17-2010, 01:01 AM
Here's where I just ordered mine from-**-> https://www.euro-parts.us/product.php?productid=16197&cat=263&page=1

I'm in the same boat as post 88. Bose/SAT Symphony II to Symphony II+. Which upgrade option do I select in this link?

AvantJunkie
06-17-2010, 08:08 AM
I'm in the same boat as post 88. Bose/SAT Symphony II to Symphony II+. Which upgrade option do I select in this link?

You will go with the Symphony II to Concert III upgrade. Concert III is another name for Symphony II+.

A4natomical
06-17-2010, 10:39 AM
You will go with the Symphony II to Concert III upgrade. Concert III is another name for Symphony II+.

Awesome, thank you.

A4natomical
06-21-2010, 04:01 PM
Is this the antenna adapter I will need to hook up my Symph II+?

https://www.euro-parts.us/product.php?productid=16142&cat=280&page=1

Undisputed
06-21-2010, 04:52 PM
Yes that's it.

A4natomical
06-23-2010, 05:48 PM
the Sym II + quadlock harness connector has the input pins for the signal from the Aux device line out, you can use whatever connector plug style needed for the device used as the signal source.

On the Quadlock harness connector, the T12f (Blue,) Aux inputs are Pin 1=Aux in Left channel, Pin 3 = Aux in ground, Pin 7 = Aux in Right channel. Then the Sym II+ HU must be recoded to activate the AUX input.

BTW, Audi has an iPod base plate available.


Does anyone know what the new software code would be to run the AUX option?

I'm going to be hooking up my harness adapter to an aux cable tonight.

EDIT: think I found it:

http://wiki.ross-tech.com/wiki/index.php/Audi_Radio_Generation_II_Plus#Coding

diagnosticator
06-24-2010, 10:57 AM
Does anyone know what the new software code would be to run the AUX option?

I'm going to be hooking up my harness adapter to an aux cable tonight.

EDIT: think I found it:

http://wiki.ross-tech.com/wiki/index.php/Audi_Radio_Generation_II_Plus#Coding


Yeah, that is the correct coding options for the Sym II+.

A4natomical
06-25-2010, 10:07 PM
Love the outcome.

http://i50.photobucket.com/albums/f322/redrider629/IMG_5525.jpg

http://i50.photobucket.com/albums/f322/redrider629/IMG_5523.jpg

http://i50.photobucket.com/albums/f322/redrider629/photo.jpg

Undisputed
06-25-2010, 10:16 PM
That looks great with the B7 buttons. Where did you find them and how hard was is to swap them out?

A4natomical
06-26-2010, 01:48 AM
That looks great with the B7 buttons. Where did you find them and how hard was is to swap them out?

Minh had them for sale. Extremely easy to swap out, you just need to take the HU out for it.

my1stturbo
07-22-2010, 02:56 PM
Has anyone come up with a good way to boost the radio quality after the swap?

boy412
07-30-2010, 02:11 PM
Minh had them for sale. Extremely easy to swap out, you just need to take the HU out for it.

Who is Minh? Link? Looks nice...

:)

my1stturbo
08-20-2010, 12:08 PM
So i decide to take the plunge today and go install my II+ during lunch only to find out that my current radio has no red connector. In its place are 3 wires with crimp on connections that are just connected to the pins on the back of the radio. The PO had a bluetooth module in the car so I'm wondering if that is still in place. Either way I'll have to figure out how to get the keys out and then try this again tonight.

Rocs
09-17-2010, 10:35 AM
Love the outcome.




What king of ipod hookup is that? how was it done?

JBM
09-19-2010, 02:40 PM
about to pull the trigger on this but I have a Dension Ice Link. Can i move this over to the II+ from my II? Thanks.

AKO
03-04-2012, 04:07 PM
How come the OP's doesnt match the trim surrounding it like the AC trim, but a4natomical's looks to be perfect? am i missing something are their different trims?

Lastsummer
01-28-2013, 03:13 PM
I know that Im bringing back and old thread but I did the swap today and only had 2 plugs instead of the OP's three plugs that went into the quadlock connector. Is there a reason for this?

h_curtis
05-04-2013, 08:06 AM
Has anyone come up with a good way to boost the radio quality after the swap?

This is a real old thread, but I think that is the problem with this switch. The FM reception takes a beating, so in some ways it isn't a very good upgrade if FM is important. I read somewhere you can open the Symphony 2+ and solder two wires together and it will work, but I am not sure if that really solves this problem that well.

Rocs
01-30-2014, 12:52 PM
I have a few Symphony II+ Radios if anyone wants to upgrade with this DIY. Havent had a chance to post them in classifieds yet.

jaycurn
02-21-2014, 12:14 PM
This is great to see! Not sure why, but when I was ready to pull the trigger on this a few months ago I could have sworn there was some wiring harness modification required and the standard Symphony II to RNS-E (Quadlock) adapter did not work??

AVier
03-09-2014, 11:58 AM
This is great to see! Not sure why, but when I was ready to pull the trigger on this a few months ago I could have sworn there was some wiring harness modification required and the standard Symphony II to RNS-E (Quadlock) adapter did not work??

I just installed mine yesterday without a problem. Just be sure to take any CDs out before you switch units; I forgot to and had to rip apart my old unit.

Sundevil84
08-14-2014, 11:09 PM
Does anyone have a link to a seller of the adaptor for the Bose system. The euro-parts link don't work.

Thanks

MNAudi101
08-15-2014, 08:08 AM
Does anyone have a link to a seller of the adaptor for the Bose system. The euro-parts link don't work.

Thanks

links are broken, just go to euro-parts.com and find it. its the only thing they sell

suprastan
09-30-2014, 09:24 AM
Euro-parts is down I think they only sell PC computer parts now, any other links?

jaydeff
09-30-2014, 02:57 PM
http://www.euro-parts.us/store/

Four-Play
03-14-2015, 12:14 AM
Just used this DIY and installed my Symphony II+ tonight after work, took about 20 minutes. I have to say, the difference in sound quality is really night & day!

Having never swapped a head unit in this car before, I searched on here for a DIY... And even without a guide it would have been pretty self explanatory, since all of the plugs only fit into one place, and since it seems like Euro-Parts now offers different wiring harnesses for the RNS-E or Symphony II+, and both of those each having an option for "Bose" or "Non-Bose", so (I think) there is no longer a need to move wires around once you get the harness.. (Don't quote me on that tho, mine plugged right up without any issue)


The only issue I had was with the keys, and getting the old head unit out.. (Shitty eBay keys that I got for $1.98)

y0itzflip
04-07-2016, 07:58 PM
hate to bump an old thread. just wondering if anybody had issues connecting to radio after this conversion? im able to connect to my symphony II but it wont connect to the II+ any ideas

Ephry73
07-15-2016, 05:03 PM
Bumping again. Looking to get this done soon


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alexb6t
05-26-2017, 12:11 PM
Bumping i pulled my HU today and after putting it back the front speakers no longer work...Can someone tell me witch wire i need to check ?!

Envoyé de mon SM-G903W en utilisant Tapatalk

fR3ZNO
02-15-2018, 08:05 AM
necrobump.

Since the Symphony II+ uses a quadlock adapter like the RNS-E, can you use a RNS-E adapter harness? They seem to be more common on eBay than a Symphony II+ to II adapter.

Some light research also shows that RNS-E is plug and play in B7 which has the Quadlock as well. So by that logic, a RNS-E harness would work in hooking up a Symphony II+ into B6.

Gin+
02-15-2018, 01:56 PM
necrobump.

Since the Symphony II+ uses a quadlock adapter like the RNS-E, can you use a RNS-E adapter harness? They seem to be more common on eBay than a Symphony II+ to II adapter.

Some light research also shows that RNS-E is plug and play in B7 which has the Quadlock as well. So by that logic, a RNS-E harness would work in hooking up a Symphony II+ into B6.

I've asked myself the same question. If it doesn't work, it's got to be real close.

fR3ZNO
02-15-2018, 03:56 PM
I've asked myself the same question. If it doesn't work, it's got to be real close.

Yeah. At the most, you've got the right connectors on each end may be just a matter of moving wires to the correct pins.


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fR3ZNO
03-03-2018, 02:35 PM
Yeah. At the most, you've got the right connectors on each end may be just a matter of moving wires to the correct pins.


Sent from my iPad using Tapatalk

Bumping this.

I recently got a RNS-E adapter and modified it slightly to work with the Symphony II+

First I clipped the wire going from alarm ground on Symphony II to tel mute on the Symphony II+ connector. Same issue occurred when I installed an RNS-E. The audio was muted and took some digging to figure out why.

The next thing is to move the k line pin, basically the reverse of what's done here:

http://audiforum.us/threads/diy-symphony-ii-to-rns-e.11737/

Then, I needed to run an extra wire from power on the symphony II connector to the pin labeled Di Sens on the Symphony II+, this is described here:

http://www.audizine.com/forum/showthread.php/518041-symphony-II-to-symphony-II-wiring-harness-and-antenna-adapter

I also took the opportunity to add a 3.5mm jack for an aux cable using the appropriate wires from a spare quad lock connector I had laying around. I didn't take any pics, but I can add some later if someone needs help.