I am going to try and document the refurbishing of this wonderfull piece of amp. This is still a masterpiece from when Sansui was Sansui!!! Produced between about 1973 and 1975 (my birth year)
First error was resolved by finding blown fuse... but I believe after all these years all fuses are due for replacement.
Most of the fuses have rateings of xA at 125V, fuses available to me are normaly 250V, do I just divide the current of the 125V units by two if I want to use 250V fuses or would I be better off ordering some 125V ones?
What is the verdict on those large Elna caps (30+ years old), stay or go?
I think they samller elco's are probably due for a replacement.
It was quite a job getting the crust of thick old dust out of there and I will go get some compressed air when I can drive again, to do a better job.
P.S. I would love the service manual for this model.. I have most of the manuals for the models on either side, but they do differ more than you'd think.
Now for some pictures
First error was resolved by finding blown fuse... but I believe after all these years all fuses are due for replacement.
Most of the fuses have rateings of xA at 125V, fuses available to me are normaly 250V, do I just divide the current of the 125V units by two if I want to use 250V fuses or would I be better off ordering some 125V ones?
What is the verdict on those large Elna caps (30+ years old), stay or go?
I think they samller elco's are probably due for a replacement.
It was quite a job getting the crust of thick old dust out of there and I will go get some compressed air when I can drive again, to do a better job.
P.S. I would love the service manual for this model.. I have most of the manuals for the models on either side, but they do differ more than you'd think.
Now for some pictures
Hi!
EEEEE! good old amps.
Send me your adress, i'll send you one mising AU-217.
It is joke!
Regards zeoN_Rider
PS. somewhere i, have schematic, I'll send you.
EEEEE! good old amps.
Send me your adress, i'll send you one mising AU-217.
It is joke!
Regards zeoN_Rider
PS. somewhere i, have schematic, I'll send you.
It can litteraly reproduce signals from 0Hz to 200kHz.
I have heard this unit before... it is proabaly everybit as good as HRII, will run them side by side when I'm done, as a test... I would not be surprised if it wins though... it had an awesome musicality to it.
I have heard this unit before... it is proabaly everybit as good as HRII, will run them side by side when I'm done, as a test... I would not be surprised if it wins though... it had an awesome musicality to it.
They call me fast!
This is for 117, 317 is about 5,5Mb.
Email adress?I, see you are online.
Regards zeoN_Rider
This is for 117, 317 is about 5,5Mb.
Email adress?I, see you are online.
Regards zeoN_Rider
Puts out 50W/ch at 8 ohms, not max but that is that low distoriotion point you talked about in your mail during the week...
What is the consumption written there dear nephew
Yes.... Sansui specifications...this may be 0.03 percent.... real maximum power may be more than 100 watts real maximum into the begining of clipping.
Our amplifier has 0.000001 percent...when switched off.... and 0.0005 percent when playing 1 watt of power.
Also that Sansui distorts 10 percent when pumping 150 watts rms.... so.... specification "details"
regards,
Carlos
Yes.... Sansui specifications...this may be 0.03 percent.... real maximum power may be more than 100 watts real maximum into the begining of clipping.
Our amplifier has 0.000001 percent...when switched off.... and 0.0005 percent when playing 1 watt of power.
Also that Sansui distorts 10 percent when pumping 150 watts rms.... so.... specification "details"
regards,
Carlos
I'm waiting...gladly.
But the power consumption into the back panel..very important information dear Nordic.
regards,
Carlos
But the power consumption into the back panel..very important information dear Nordic.
regards,
Carlos
Yeah...not much more than 50 watts...maybe 75 into 4 ohms
It seems the supply is weak.... install huge condensers and reduce emitter resistances and you may have better dinamic power into the peaks.
Install 22000uf each rail...try to see if you have better result...normally this results good when they use 6800 or 10000uf each rail
1 Ampere fuse into 220 volts
2 ampere fuse into 110 volts.
Those are AC, line fuses..into transformer primary... this is the main difference from Industries and DIYers... we use to make better supplies, in special when the unit is old ... they used small condensers.
regards,
Carlos
It seems the supply is weak.... install huge condensers and reduce emitter resistances and you may have better dinamic power into the peaks.
Install 22000uf each rail...try to see if you have better result...normally this results good when they use 6800 or 10000uf each rail
1 Ampere fuse into 220 volts
2 ampere fuse into 110 volts.
Those are AC, line fuses..into transformer primary... this is the main difference from Industries and DIYers... we use to make better supplies, in special when the unit is old ... they used small condensers.
regards,
Carlos
- Status
- Not open for further replies.