zax123

Hi guys,

So I've pretty much got my new system all installed. I'm just working on aesthetic stuff now.

I'll describe how I get sound and what the components are... From the OUTPUT of the factory head unit in my 3rd gen TL, I bring the output speaker-level signal from each of the 6 channels to David Navone Line-Out-Converters in the trunk. From there the LOCs convert to line-level and the line level signals get input to amps as follows:

Front channel line level input to JL 300/4 bridged for two channel operation.
Rear channel line level input to 2 channels of a JL e4300
Center channel line level input to a 3rd channel of the JL e4300
Sub line level input to mono-bridged operation on a Boston Acoustics GT22

The JL 300/4 powers two Boston Z6 components for front channels.
The e4300 sends rear channel info to two Boston Pro60 components for rear.
The e4300 sends center channel to JL Audio XR525CX in dash.
The GT22 powers a Boston G510 10" subwoofer in 0.5 cu.ft. sealed box.

So, besides the whole system being tuned really badly (in terms of crossover frequencies and gains), I am getting a VERY loud HISS from the speakers even when there is NO signal coming from the head unit. Even when the head unit is completely OFF. (The amps stay on cuz the remote trigger wire is simply a 12V at ON position wire). However, when I turn up the volume of the head unit if, say, a CD is on pause, the hiss gets louder.

So, it's really quite devastating cuz as you can see I have some pretty high-end components in my system, and it sounds terrible.

I would love any help anyone can give me. Thanks!!!

Rob

zax123

P.S. I'm running two 4 gauge power wires straight from the battery (fused at battery). One is fused at 80A and goes to a 1F cap and powers the 300/4 and GT22. The other goes straight to the e4300 and is fused at 40A. I tapped into a factory ground connection in the trunk for all ground wires.