The definitive stereo and subwoofer upgrade thread

[BKE]

I can only speak about the B&O system, but all it's outs were full signal. The tweeter had a capacitor soldered on to protect it. At the same time, it could be different though because the B&O tweeter shares the woofer speaker wire... I probably didn't help at all there..

Anyway, you could always remove the dash tweeters to see if there's a cap attached. That should give you a good idea.

I read in one of the install posts that the cap is in the connector at the woofer. Measurements at the connector may be the best approach.

[fmzip]

I read in one of the install posts that the cap is in the connector at the woofer. Measurements at the connector may be the best approach.

I can check both the B&O and stock A4 door speakers since I have both. Can you guide me as to what I should be doing with a meter to check it?

[BKE]

I can check both the B&O and stock A4 door speakers since I have both. Can you guide me as to what I should be doing with a meter to check it?

If I recall correctly it is measured in ohms, connect a multimeter to the positive wire on each side of the connector if there is a reading there is a cap, Otherwise it will be 0.

If you have the door speakers out measure the impedance, I am curious. I measured the sub and it is 7.1 ohms, and the dash speakers are 3.6 ohms versus the labeling 8 and 4 ohms respectively.

[fmzip]

If I recall correctly it is measured in ohms, connect a multimeter to the positive wire on each side of the connector if there is a reading there is a cap, Otherwise it will be 0.

If you have the door speakers out measure the impedance, I am curious. I measured the sub and it is 7.1 ohms, and the dash speakers are 3.6 ohms versus the labeling 8 and 4 ohms respectively.

I will do that this evening, I'll measure the B&O sub as well.

So I asked my test engineer, he said to measure resistance across both leads in "ohms" as you suggested. That will determine if it's a 4 ohm 8 ohm speaker etc. He wasn't aware of how to take a measurement or what it would read if a capacitor was across the leads, my multimeter doesn't measure capacitance