Quote:
Originally Posted by Le7316
I wonders why can’t we just use the stock input wires from the stock sub and connect those to our RCA for the aftermarket amp ? Assuming the stock amp already have the low pass filter built in to our stock sub .
So no need of getting the LOC ?
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If you have the Logic 7/Top Hi-Fi system (I believe all 2007 and 2008 335i's came standard with) then you don't have line level inputs feeding the amplifier. The Logic 7 system uses the MOST fiber optic system to feed the factory amplifier. Your options are:
1. Grab high level after the amplifier (which is 70 watts per channel, EQ'd and low pass filtered)
2. Code car to Hi-Fi/676 and run new harness from behind head unit to rear of car. This gives you front and rear stereo differential balanced line-level outputs that are not filtered or EQ'd.
3. Buy a MOST D/A converter compatible with your car, like the MoBridge DA2.