Metra XSVI-2004 C5 adapter question..
Thread Starter
Racer
Joined: Dec 2006
Posts: 268
Likes: 1
From: Spring Hill Fl.
Metra XSVI-2004 C5 adapter question..
I just had this adapter installed and it comes with 2 screw type adjustments for gain control for our subwoofers.
My question is I have bass coming through my doors, but I do notice the rear speakers are quite a bit louder could this be from my installer not adjusting these gains?
My question is I have bass coming through my doors, but I do notice the rear speakers are quite a bit louder could this be from my installer not adjusting these gains?
Racer
Joined: Dec 2009
Posts: 317
Likes: 0
From: SW FL
Possibly. I'd double-check the fader & any other adjustments that are on your new headunit (I'm assuming you purchased an aftermarket if you have the Metra adapter). I'm actually awaiting the arrival of an Alpine HU and this adapter so I'm curious to see how yours turns out. I'll let you know how mine works out once I get it in on Monday 
Thread Starter
Racer
Joined: Dec 2006
Posts: 268
Likes: 1
From: Spring Hill Fl.
I'll let you know...
I have to call the shop that I had it installed at and see if the installer adjusted the gains at all. I did go to an aftermarket Pioneer DEH-P6100BT HU, and after checking the fader, and balance options find they are at 0 meaning untouched which I think is the way to leave them unless your fine tuning to your liking..
I called Metra the manufacturer and asked them if the gains control the volume of each speaker and they said yes...So after you do your install, and after I get back from the shop we can compare notes..
I however now am not to impressed with the lack of bass output from the door woofers, so hopefully that can change when I hear from you and what you find or find out the installer never listened to the system prior to fully installing it in the car to see if it sounded right...
That would of course be a tip I would give to anybody going with an aftermarket HU..Listen to your setup before leaving the adapter gains in their stock positions to see if your happy with the sound..
I called Metra the manufacturer and asked them if the gains control the volume of each speaker and they said yes...So after you do your install, and after I get back from the shop we can compare notes..
I however now am not to impressed with the lack of bass output from the door woofers, so hopefully that can change when I hear from you and what you find or find out the installer never listened to the system prior to fully installing it in the car to see if it sounded right...
That would of course be a tip I would give to anybody going with an aftermarket HU..Listen to your setup before leaving the adapter gains in their stock positions to see if your happy with the sound..
Last edited by Storm2313; Dec 28, 2009 at 12:59 PM.
Racer
Joined: Dec 2009
Posts: 317
Likes: 0
From: SW FL
Hey sorry I didn't respond to you, must have lost the thread subscription. I installed everything, albeit quickly, and haven't really been pleased with the sound due to lack of bass as well. I then remembered today something about having to connect a amp-on wire (blue & white) to the Metra adapter box to give it power. Apparently all it does is pass the correct signals to from the headunit to the speakers but not supply the actual power. Check this thread, it has some good info on what to do including a picture of the place you need to tap. Obviously Metra needs to rework their install instructions lol 
I'm going to mess with it tonight when I get home and post up what I find!
I'm going to mess with it tonight when I get home and post up what I find!
Tech Contributor
Joined: May 2003
Posts: 7,035
Likes: 134
From: North Augusta, SC
The blue/white wire coming out of the new radio is the 'external amp' trigger. The solid blue wire is the 'antenna' trigger. They should NOT be connected to the same place.
To get the door subs working with an aftermarket radio in a C5 you have to somehow get the blue/white wire from the new radio connected to the DARK GREEN wire at pin #8 of the original black C1 plug.
If your AM/FM reception is seriously bad, there is a way to use the blue wire to turn on the OEM antenna amp, but there have been mixed results, and it's not quite plug-n-play. This thread gives you the basics on that.
To get the door subs working with an aftermarket radio in a C5 you have to somehow get the blue/white wire from the new radio connected to the DARK GREEN wire at pin #8 of the original black C1 plug.
If your AM/FM reception is seriously bad, there is a way to use the blue wire to turn on the OEM antenna amp, but there have been mixed results, and it's not quite plug-n-play. This thread gives you the basics on that.
Safety Car
Joined: Feb 2006
Posts: 4,545
Likes: 387
From: Fort Worth Texas
I think I had the PAC OEM-VET1, and when I was done installing, I had no front subs. I think Greg had told me to connect the blue wire from the PAC to the blue/white amp lead from the HU because the PAC was labeled wrong. So in essence I connected both the blue and blue/white from the PAC to the HU to get subs to come on.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Thread Starter
Racer
Joined: Dec 2006
Posts: 268
Likes: 1
From: Spring Hill Fl.
I'm confused..
Tonylukes3 says he connected it to the brown wire on pin #8 I thought it was green??
Just to be sure I should have them splice the new Head Unit's Blue/White wire to the number 8 DRK GREEN wire to activate my subs..
funny I have to tell a pro installer this info, but these cars are unique,,
Just to be sure I should have them splice the new Head Unit's Blue/White wire to the number 8 DRK GREEN wire to activate my subs..
funny I have to tell a pro installer this info, but these cars are unique,,
Tech Contributor
Joined: May 2003
Posts: 7,035
Likes: 134
From: North Augusta, SC
Tonylukes3 says he connected it to the brown wire on pin #8 I thought it was green??
Just to be sure I should have them splice the new Head Unit's Blue/White wire to the number 8 DRK GREEN wire to activate my subs..
funny I have to tell a pro installer this info, but these cars are unique,,
Just to be sure I should have them splice the new Head Unit's Blue/White wire to the number 8 DRK GREEN wire to activate my subs..
funny I have to tell a pro installer this info, but these cars are unique,,
The dark green wire at pin 8 of the black C1 plug is what you're looking for. The "amp turn on" wire from the new HU needs to be connected there.
Racer
Joined: Dec 2009
Posts: 317
Likes: 0
From: SW FL
I know everything is working and I double-checked it when I tapped the wire, so maybe I just typed the wrong color lol. I need to route a USB cable anyway so I'll post up after that's done & verified.
