no , i want to keep the spider chassis of the aleph 3 , and as i have an high efficiency driver 30W is big enough. my only goal is the fun and to beat my VFET Sony 4650 ( power section only)
my stock aleph3 doesn't make it like that , sound darker and congested
so i want to make a full recap and and try different input transistors to change that. 🙂
something none covered up ? is the two zener Z101 / Z102 ( anti_spik) are also usefull with Jfet input ? 🙂
i have just finished recaping the power supply with 33000uf 25V cornell dubillier instead of the 22000uf . as it impossible to make a CRC or CLC with the stock power supply PCB . is it worth to by pass each rail with a 20 or 30uf MKP or just leave it at is 🙂
Bet ZM will propose "his" Philips MKC 1uF 😛
Same diameter caps ? What does it look like before/after ?
Same diameter caps ? What does it look like before/after ?
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angle of green is much greater , when you succeed squeezing few motor-run caps in there
so , it's worth it
🙂
so , it's worth it
🙂
what's exact value of rail voltage now ?
25V caps ....... you need at least 2V leeway there , so rails higher than 23Vdc is just looking for trouble
25V caps ....... you need at least 2V leeway there , so rails higher than 23Vdc is just looking for trouble
the stock 22000 was 25V too , with 2. 3V,4V rail i didn't power up yet with the 33000uf as i'm waiting my 9610 replacement perhaps i should put small resistor between the + & - of the rectifier and the capacitor bank ?
in case i want to lower the supply rail by one volt or Two what is right way insert resistors on the secondary trnasformer AC line before the bridge or after the bridge and make a sort of RC filter ? 😎
right way is - leave it as is
why constipating it?
one thing is shaving part of volt in optimized CLC or CRC filter , another thing is choking it without reason
why constipating it?
one thing is shaving part of volt in optimized CLC or CRC filter , another thing is choking it without reason
finally received my pair of 2SJ109 , i have notive they have a 7 pin called substrate pin . what to do with it let it floating or put it to ground ?
Aleph 3 new start , finally mounted with Jfet input , new bank of power supply capacitor , Zen mod
C1 C2 C3 with 470uf and 100nf parrallele ( FC and Muse BP for the feedbach)
what to say , the low end seems more present but with less control than with the 9610 input , medium a little recessed . let's have some burning time
the Sony pushpull VFET is still the winner for the moment with less bass but more refined medium. 🙂
C1 C2 C3 with 470uf and 100nf parrallele ( FC and Muse BP for the feedbach)
what to say , the low end seems more present but with less control than with the 9610 input , medium a little recessed . let's have some burning time
the Sony pushpull VFET is still the winner for the moment with less bass but more refined medium. 🙂
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
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