Studio Reference Amplifier

[steveu]

Interessant schematic, Apex...
Shouldn t Q6 base rather go to Q3 collector
and Q5 base to Q4 collector ?...

Good catch but I think you have the numbers swapped back to the way it is now. As it is the feedback is positive. I'm sure Apex built it the right way or it wouldn't work.

 

[44250]

wich 2sk2145 to use,with suffix BL, Y or GR?

i am in a process of ordering parts for this amplifier,that is why i am anoying...

 

[apexaudio]

i am in a process of ordering parts for this amplifier,that is why i am anoying...

Use GR or BL

 

[44250]

thank you Mile!

 

[apexaudio]

YouTube

 

[Sunny22g]

Hi guys my sr200 PCB .Set for my bad English

 

[44250]

very nice boards, are they your diy?

 

[Sunny22g]

Yes I made at home

 

[Sunny22g]

Sr200

Plz check is layouts.its on or not

 

[Sunny22g]

Sr200

Plz check this pcb

 

[Sunny22g]

What is actually ac volt required for sr200.can any 1 tell plz

 

[vargasmongo3435]

AC voltage after rectification you can go with 40V AC after rectification 56V DC with filter cap will increase to 60 +/- is 3 pairs so about there even with 38V AC will also work I did tested many times on simulation sorry for the bad drawing

 

[Sunny22g]

Sir see previous post my I am make u 3.2 version.

 

[Sunny22g]

I am watching now u video sr200 many time.i like this video

 

[vargasmongo3435]

thank you but the original designer is Mr. Alex MM I'm just his follower I learn a lot from him Alex MM deserve all the credit not me



Best Regards
Juan

 

[Sunny22g]

OK Sir .Sir I have 55 0 55 15amp transformer.which amp best for this transformer. best pre amp for sr200.can u give PDF or other of preamp. Sry for my bad English

 

[vargasmongo3435]

just search here Apex have many good design I do not design them is the comunity of diy that does that like I say I'm just a follower

 

[Sunny22g]

Sir can I replac 5200 1943 with 3858 1494

 

[vargasmongo3435]

as longer the application is for audio yes you can NPN PNP I use MJL3281 NPN and MJL1302A from On https://www.onsemi.com/pub/Collateral/MJL3281A-D.PDF

 

[HIFI0101]

what is studio reference amplifier? eh . what is the difference between normal amp vs studio amp :/