Info about Adcom GFA 4404

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Alfaholic
Posts: 437
Joined: Fri Nov 14, 2014 11:23 am
Location: Norway.Karmøy

Info about Adcom GFA 4404

Post by Alfaholic »

The guy i bought the Orion concept amp and dsp got one of these Adcom amps he also got the pre amp/line driver but there is a problem with the amplifier.
I got it for the cost of shipping and i onder if anyone got any knowledge about them, when where they made how they sound and how many were made etc, its going to be repaired and i found the service manual for it with the blueprint.
This is the black version i know they made some white and black in limited numbers.
zpa0.5(V210245)
zpa0.3(00618)
zx600ti x2
600titanium
zx400ti
sd500.4
XSC5 x2
pld1
sdt-ti
tba
bass cube
tld66
trickyricky
Posts: 1653
Joined: Sun May 06, 2012 8:01 am

Re: Info about Adcom GFA 4404

Post by trickyricky »

Should be a pretty straight forward repair especially with the schematics/service manual on hand. Mouser (am pretty sure others as well) carry the outputs and several components used on this amplifier. Good luck.


Don't forget that this amplifier has a balance input, you can use the TBAT you purchased from me to send the balance signal to the input (of course you will need to modified some cables that are S-video to XRL's and make sure the pin lay out is exactly as stated in the service manual...or you can inject the signal directly to the spots on the board by following the schematics. )
vladthebad
Posts: 169
Joined: Tue Dec 22, 2009 5:55 am

Re: Info about Adcom GFA 4404

Post by vladthebad »

Adcom? Beefy. The 70x2 was more overbuilt than a 454 would be in a geo metro....
User avatar
Alfaholic
Posts: 437
Joined: Fri Nov 14, 2014 11:23 am
Location: Norway.Karmøy

Re: Info about Adcom GFA 4404

Post by Alfaholic »

I will try and do that trickyricky, hope it does not require much repair and many parts like the harman kardon.
zpa0.5(V210245)
zpa0.3(00618)
zx600ti x2
600titanium
zx400ti
sd500.4
XSC5 x2
pld1
sdt-ti
tba
bass cube
tld66
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