Pioneer GM 120

Hi Marc,
Sticking a 1K resistor between blue and ground should turn the amplifier on. The 1K draws enough current to trigger the amp on. The most common fault with this circuit are blown traces and shorted e-b on the current sense transistor.

-Chris
 
HI AGAIN

Somebody asked me what wrong with amp. It wery simple.
I can't switch ON. Nothing is burned, everything is OK.For me is wery hard to repair without schematic because I dont see very small objects & I have 47 , I have money but Ican't pay & schematic cost around 20 Euro , this amp is much cheaper .
Thanks to ALL DIY-s
 
Hey all,
Stumbled onto this site through google looking for information on the gm-120 amp. Was delighted to find a schematic for this amp, but very disapointd when the ZIP file was corrupt. Anybody have a copy of it around still??

Ross
 
Hello...

I am an owner of an GM120 ...

Can Anyone send me some information about it

want to cable it up in my car 🙂 but have no clue how to do it.. lol :smash:

My current car audio is :

Head unit : Panasonic CQ-C7301N (2006model)
amp1 : JL audio monobloc 200W
amp2 : Xzound "1200W" 5ch (LOL LOL LOL LOL) <--- sucks , i use it on my mid-ranges :clown:
Subwoofer : 2 x 10" JL audio
6x9" : Altec Lancing
etc : BLG 6,5" + tweeters , Rockford fosgate cabels etc