Okay been working with this amp cause cooling fan is not working.
if i swap this Q606 to:
this, fan goes 100% right from the start.
these comes in my mind, any replacement part?
Dropbox - Pioneer GM-X904.pdf
and when i was heating amp with music on i noticed block B rca leaks to block A, might be only 10db difference, not good if plan to use this on 4-way active.
2-4 rca switch S851 works ok, might try to delete it
if i swap this Q606 to:
this, fan goes 100% right from the start.
these comes in my mind, any replacement part?
Dropbox - Pioneer GM-X904.pdf
and when i was heating amp with music on i noticed block B rca leaks to block A, might be only 10db difference, not good if plan to use this on 4-way active.
2-4 rca switch S851 works ok, might try to delete it
The transistors have different pin outs so wont directly fit.
You would need to do some pin swapping to make it work.
You would need to do some pin swapping to make it work.
yes i bent it to fit without any results.
even swapped Q604 and Q605 from working gm-x802 without fan to be working
even swapped Q604 and Q605 from working gm-x802 without fan to be working
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If you heat the thermistor for the fan, does the fan run? You may have to remove it from the sink to heat it sufficiently.
The 'B' RCAs are fed from the A channels when no RCAs are plugged into the B channel RCAs.
The 'B' RCAs are fed from the A channels when no RCAs are plugged into the B channel RCAs.
I had it under the blanket, temperature meter said 60c and soldering iron was on thermistor bolt. 802 amp has 58 and 50 marks on thermistors, 802 dont need blanket and fan start to work when my surface mount meter reaches 50.
I dont know reallyit can be fully working. Just cant get it hot enough.
Rca connector was it 4 10 pins. My god did not noticed that.
Rs-a50 shares lots of similarites with this gm-x904
Is there a point start to remove xo filters theres resistors and caps between rca +- even with filters un-switched,
Block b is more simpler in this amp compared to block a.
Is it right forum to ask such tweaks or do i have to go to russia?
I dont know reallyit can be fully working. Just cant get it hot enough.
Rca connector was it 4 10 pins. My god did not noticed that.
Rs-a50 shares lots of similarites with this gm-x904
Is there a point start to remove xo filters theres resistors and caps between rca +- even with filters un-switched,
Block b is more simpler in this amp compared to block a.
Is it right forum to ask such tweaks or do i have to go to russia?
The signal that goes to the amplifier section doesn't pass through that capacitor. Any improvements made by removing it will be purely imagined.
for me it isnt improvement to put those things over there when i dont use that highpass filter.
But yeah, case is closed, all four rcas need to bee hooked up and i cant get this amp heaten up that much that fan switches on.
idles degrees 60celsius, good place to dry socks with this amp
But yeah, case is closed, all four rcas need to bee hooked up and i cant get this amp heaten up that much that fan switches on.
idles degrees 60celsius, good place to dry socks with this amp
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This is the problem I see with this. If you come back and give the following results, people who cannot afford to have their amps repaired or replaced are going to start trying to 'upgrade' their amps and in turn convert them into paperweights.
Some of the imagined results (any or all happen with a useless modification).
The soundstage opened up (#1)
The separation is so much better (variation on above)
The noise floor dropped 60dB
It's pushing my speakers much harder.
The sound is so much more transparent
Some of the imagined results (any or all happen with a useless modification).
The soundstage opened up (#1)
The separation is so much better (variation on above)
The noise floor dropped 60dB
It's pushing my speakers much harder.
The sound is so much more transparent
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