A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Stereo install 99% done....Only problem is it won't work! Who can help me analzye this? With pics!

Thread Tools
 
Search this Thread
 
Old 04-04-2002, 03:14 PM
  #1  
Member
Thread Starter
 
sohcrates's Avatar
 
Join Date: Nov 2001
Posts: 2,595
Likes: 0
Received 0 Likes on 0 Posts
Default Stereo install 99% done....Only problem is it won't work! Who can help me analzye this? With pics!

Allright, here's the deal.

I have the stock non-bose system in my 2002.

I tapped into remote turn-on for the stock amp, as well as postive and negative wires going to stock sub.

I ran pos. and neg. wires to a line converter.

I grounded both line converter and amp to a good ground under the back seat, and grabbed power from the power distribution block (a 4 gauge wire that runs directly from the battery to behind the fuse block)

When i turn radio on, amp turns on (LED lights up) but i get NO sound.

Line converter has adjustable pots, but running them through their whole range doesn't change a thing.

It's a stereo amp (xtant 202m) which i'm bridging to mono to drive a single JLAudio 15W0.

I'm pretty sure my wire taps are allright, but how could i test them? would hooking up a multimeter to them and setting it to record AC voltage at least show me if there's a signal?

What would be YOUR next step in troubleshooting?

I appreciate any help!


Pic 1: Subwoofer
<img src="http://pictureposter.audiworld.com/28628/sub1.jpg">

Pic 2: Amp (w/out sub wires connected yet)
<img src="http://pictureposter.audiworld.com/28628/amp1.jpg">
Old 04-04-2002, 03:22 PM
  #2  
Senior Member
 
Scot J's Avatar
 
Join Date: Mar 2002
Posts: 9,890
Likes: 0
Received 0 Likes on 0 Posts
Default Things to check:....

Get out a volt meter, check your power at the amp. Check your remote wire. Try running 12v+ to the remote terminal. If the amp turns on and it didn't before than it is the remote wire. If the amp is on and nothing is coming out, check your RCA's. Get back to me after you do all this.
Old 04-04-2002, 03:23 PM
  #3  
AudiWorld Super User
 
dougie's Avatar
 
Join Date: Mar 2000
Posts: 6,450
Likes: 0
Received 0 Likes on 0 Posts
Default 99% of the time, its something dumb...

1. like using the wrong bridged mono outputs to the speaker...

2. the speaker wire coming loose from the speaker itself (inside the box)...

3. amp gains being set to zero...

4. or an amp fuse being blown... my hafler had channel fuses, not just a power fuse. if one fuse was gone, that channel didnt work.

good luck!
Old 04-04-2002, 03:23 PM
  #4  
AudiWorld Senior Member
 
Moulari's Avatar
 
Join Date: Aug 2001
Posts: 983
Likes: 0
Received 0 Likes on 0 Posts
Default I would start simple just by turning on the amp and then

hooking up an old " home stereo" cd player of tape deck directly to the amp. this way you can make sure that everyhting after your line converter is good - if you get sound then you know your amp and sub are working fine- time to trouble shoot your line converter then backward
Old 04-04-2002, 03:24 PM
  #5  
Senior Member
 
omidius's Avatar
 
Join Date: Dec 2000
Posts: 8,434
Likes: 0
Received 0 Likes on 0 Posts
Default why the line converter?

I think you may have goofed grounding both leads on the line converter. i'm having trouble picturing this.

Inputs from stereo -----&gt; line converter?

Remote on and + - from stock Amp ---&gt; amp?
Old 04-04-2002, 03:28 PM
  #6  
Junior Member
 
punjabi-A4's Avatar
 
Join Date: Oct 2000
Posts: 631
Likes: 0
Received 0 Likes on 0 Posts
Default checked the fader/bal setting on h-unit?..take it vocals are working from stock amp?

also i know it sounds dumb but make sure you check the gain on the amp and any switch (if any) stating amp mode..i.e bridged or stereo etc...like you said you could check with a multimeter for a signal.
Old 04-04-2002, 03:29 PM
  #7  
Member
Thread Starter
 
sohcrates's Avatar
 
Join Date: Nov 2001
Posts: 2,595
Likes: 0
Received 0 Likes on 0 Posts
Default well...

i've still got stock headunit

basically,

1) i tapped into the remote turn-on from the head unit that goes into the stock amp....

2) I tapped into the 2 wires going OUT of the stock amp that go to the stock sub

In other words...there's a stock amp in the trunk, power doesn't come right from the head unit...does that make any more sense?
Old 04-04-2002, 03:36 PM
  #8  
Member
Thread Starter
 
sohcrates's Avatar
 
Join Date: Nov 2001
Posts: 2,595
Likes: 0
Received 0 Likes on 0 Posts
Default

good call! i'll go whip out my portable cd player!
Old 04-04-2002, 03:37 PM
  #9  
Member
Thread Starter
 
sohcrates's Avatar
 
Join Date: Nov 2001
Posts: 2,595
Likes: 0
Received 0 Likes on 0 Posts
Default

I'll check out fuses as well...thanks
Old 04-04-2002, 03:38 PM
  #10  
Member
Thread Starter
 
sohcrates's Avatar
 
Join Date: Nov 2001
Posts: 2,595
Likes: 0
Received 0 Likes on 0 Posts
Default

Finishing my pizza...then i'll whip out the voltmeter!


Quick Reply: Stereo install 99% done....Only problem is it won't work! Who can help me analzye this? With pics!



All times are GMT -8. The time now is 10:29 PM.