Studio Reference Amplifier

[Junie]

Thanks Guys,
Thanks A.wayne

[johnwalz]

Originally Posted by apexaudio

Set 50mV on 0R47/5W resistors, it's 100mA bias current. If you have large heatsink set 100mV (bias 200mA).
Regards

Thank you very much APEX for helpful Technical support.

[apexaudio]

Originally Posted by johnwalz

Thank you very much APEX for helpful Technical support.

Set 15mV on 0R47/5W not 50mV it's my mistake.

[44250]

Junie.where are you? you have sr200 finished and now you don't need diy-comunity? after some listening i hope you have some new impresions about your newest amplifier?

[Junie]

Hey, I'm here man.
busy again

[Vostro]

Ive Etched and started to built up the New pcb from Alex_MM SR200 Ver3.1

I have some questions,
1.) I see Mr Alex included 2x100nf decoupling into the 'signal' ground from the 15V rails,
I don't see this on the Original Circuit Diagram, just wanted to check if this is best to add ot leave out ?

2.) I need the voltage rating of two capacitors,
C9 ? I'm guessing it should be a high voltage ?
C7 ? I'm guessing that a low voltage would do,
But Id prefer to know what Voltage rating is correct,

In attached picture is my litttle amp progressing and the SR200 v3.1.
Thanks so much

[Junie]

Hi Vostro,

C9 in my build is rated at 250V
C7 is 50V

Regards,
Junie

[AndrewT]

The decoupling should be connected to their own Power Ground.
Never to the Signal Ground.

[wiljj78]

Originally Posted by Junie

Hey, I'm here man.
busy again

Junie, Your ONPOW button and chassi are available in Popular Electronics??

Regards,

[Junie]

Hello Will, you can buy it in ONSEMI they have different models of ONPOW.