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Millett "Starving Student" hybrid amp - Page 455

post #6811 of 6814
Quote:
Originally Posted by GlowGale View Post
 


Sir, I salute you! Doing single sided pcb design without any jumper wires is a black art in itself.

 

If you can find a dual gang trimmer or 2 simple 25k trimmers, go ahead and use them on the board. The main idea of the original circuit was to get constant loudness while tweaking the balance of your typical hifi speaker amp. Just set both to 50% with a DMM and turn the more silent side up untill both channels match in loudness. Just make sure you use the right tongue angle when tweaking those trimmers.

 

Greetings,

GG

OH, sweet! two trimmers are easily swapped in, and are eaiser to get... I enjoy the challenge of the single side. I dont know how many times I have had to scrap a PCB design and start over to avoid jumpers.

post #6812 of 6814

Ditched the balance control for trimmers, shortened some traces and removed another 1/2 inch from the length of the board. I'm attempting to stack the mosfets onto just two heat sinks...its pretty tough.

 

post #6813 of 6814

Etched a board... turned out pretty good. Sorry about the lame phone pic.

post #6814 of 6814
Quote:
Originally Posted by vixr View Post
 

Etched a board... turned out pretty good. Sorry about the lame phone pic.


Is that "Vixr Labs 2014" in the top left corner? Looks like a neat & compact pcb, nice work man. It looks awesome with the blue tint!

 

Greetings,

GG

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