Yukon-Premium Sound-MTX req5 installation.

[BlackWidow]

Hello folks this is my first time posting on the site, and so far im pretty impressed with what i have seen so far when it comes to people getting answers they need so i figured id put mine out there in hopes of recieving the same.

Vehicle: 2002 yukon slt with premium sound/not bose.

Installing: Mtx req5 (Which is basically a LOC)

Problem: The req5 has 2 functions;

1) Add after market amplifiers to a stock radio

2)Ipod input integration.

After having installed everything the ipod input comes out loud and clear as it should, however the radio and cd player play really quietly even at max volume.

This is the wiring codec im using:

A Lt Grn/Blk Subwoofer -

B Dk Blu/Wht Subwoofer +

C - D Not Used

E Orn Fused Battery Positive Voltage (not enough current for an aftermarket amplifier. Use a separate fused cable direct from the battery if you are installing an aftermarket amp)

F Blk Ground

G Dk Grn Right Rear D pillar speaker +

H Lt Blu/Blk Left Rear D Pillar speaker -

C-2 is a 24-pin connector with pins labeled A1 - A12 and B1 - B12

A1 Dk Grn RF Speaker -

A2 Lt Grn RF Speaker +

A3 Lt Blu RR Speaker -

A4 Dk Blu RR Speaker +

A5 Orn Amplifier feed (Pwr Ant signal. Use this wire to turn on your amp)

A6 Ppl Amplifier gain control (not used with aftermarket amp)

A7 - A8 Not used

A9 Lt Grn RF Audio -

A10 Lt Grn RF Audio +

A11 Blk RR Audio -

A12 Dk Blu RR Audio +

B1 Gry LF Speaker -

B2 Tan LF Speaker +

B3 Yel LR Speaker -

B4 Brn LR Speaker +

B5 - B8 Not Used

B9 Dk Grn LF Audio -

B10 Tan LF Audio +

B11 Brn LR Audio -

B12 Brn LR Audio +

Basically my understanding is that the stock amplifier takes the 4 channels output by the stock HU and somehow produces a mono channel for the subwoofer. What im doing is trying to just install front speakers and a subwoofer without using any of the stock rear door/rear pillar speakers.

For the subwoofer i was going to tap into the rear speaker output and use the built in lpf on the amp to get the low frequencies, and for the front speakers tap into the front wires and use hpf. however it just played really quietly when i tested it.

Sorry for the long post, hope you can help!//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

Click to read more...

 

[keep_hope_alive Premium Member]

where did you tap the wires? before or after the factory amplifier?

 

[BlackWidow]

Before the amplifier, i wanted to take out the stock amp so i could fit the req5 in its place as they where close in size.

However i think i realize that i need to tap into the output from the amp, so now i have to figure out how im going to reconnect the inputs to the stock amp.

 

[keep_hope_alive Premium Member]

correct, tapping before the amp is too small of a signal. you should tap after the stock amp, or see if the ReQ can work with low level inputs.