TigerHeli: Another idea would be that they make a product usually called "Line Drivers" (like the PAC Turbo 1 or Turbo X) that essentially let you boost the RCA output. Street price about $25 each, but might be your easiest option. UPDATE-EDIT: It seems really odd to me that Metra would design the harness with no type of gain adjustment so it only worked with 4.0V pre-outs - there are a lot of 2.1 V pre-out HU's on the market, and it would be easy to design the unit to work with them with an adjustment to decrease the gain for the 4.0V ones. HTH!
Another idea would be that they make a product usually called "Line Drivers" (like the PAC Turbo 1 or Turbo X) that essentially let you boost the RCA output. Street price about $25 each, but might be your easiest option.
UPDATE-EDIT: It seems really odd to me that Metra would design the harness with no type of gain adjustment so it only worked with 4.0V pre-outs - there are a lot of 2.1 V pre-out HU's on the market, and it would be easy to design the unit to work with them with an adjustment to decrease the gain for the 4.0V ones.
HTH!
I agree with the your update but I was clueless at the time and bought the Metra 70-7551 for my 03 Pathfinder bose setup. I am no scrambling to find out just what is right. If anybody knows please post in my thread here http://community.crutchfield.com/forums/thread/41113.aspx
I installed an aftermarket head unit everything works fine but the is no sound coming from the rear speakers just the built in subs and front speakers. Can anyone help
What car do you have and what sound package was in it from the factory, what head unit and what harness adapter?
I am guessing the rear speakers had their own amp and most likely you didn't connect it's remote lead to the head units remote output lead, but I need more info.
Thanks!
2002 Ford Focus Sony CDX-GT410u Sony XT-100HD HD Tuner Stock speakers, no amp, no subs