Ampcamp mini

[siddv]

Hello, Okay I’m just getting around to the making ACAmini and it occurred to me would it be easily possible to eliminate the output capacitor and use a plus / minus bipolar supply? Has anyone gone down this road? Thanks Bob

 

[lineup]

I have added a thread with ACA Mini in dual supply.

Thread 'ACA Mini with Dual Supply'

2023-01-09 2:27 pm

ACA Mini is a very interesting amplifier.
It is Nelson Pass typical minimalistic.

ACA Mini works well with dual supply, +/-12V.

But watch out for the DC offset on the output.
Adjust before you attach your speaker.

Don't mind those components I have replaced.
It would work with the original parts.

• lineup
• Replies: 11
• Forum: Pass Labs

It is in Pass Labs forum.

 

[siddv]

Thanks

 

[Puffin]

Are there any benefits in sound quality by using Bi Polar Power Supply?

 

[Mooly]

I suspect noise injection from the negative rail could be an issue even if the circuit was configured correctly for a split rail. One of the advantages of AC coupled single rail designs 🙂

 

[Puffin]

Aah, I think I will leave mine as is.