Sound System Upgrade in an 8V S3

[Sloth682]

Also, did you use the high level signal to the sub to go into the Zapco amp? Or did you grab a low level out from the Helix?

[OSU S3]

I used hybrid legatia series, L8v2, L3v2, and L1v2. I always try to put as much clean power as I can but they ran pretty good off the stock b&o amp which I doubt puts out very much rms power. I'm using an audio control lc8i to convert to low level. I'm taking the front low, mid and high signals as well as the signal from both sub outputs from the b&o amp and feeding the lc8i. I'm summing the front signals into a 2ch signal and outputting them the helix and sending the sub signals separately into the helix as well. This lets me control sub volume through the factory head unit. The helix is setup so the front signals feed all six of its channels and I have the sub channels output to the zapco through rcas. Hope this helps. Let me know if you have any more questions or if this is confusing.

[Sloth682]

I followed you there. Thanks for being the guinea pig for this, so to speak. When I found out there was no way to do a MOST setup, I was worried about getting a clean signal for a LOC. Also good to hear you had good results with a lc8i.

I dont' have the B&O setup, just the internal amp audi sound system whatever. I'm guessing the door speakers are passively crossed over, so I wonder if I can get away without the summing step.

Anyway, great info.