another BR100; advice please

[ThomasR]

Hello everybody,


This is the beginning of my next project; i maybe shouldnt work on two at the same time, but the XregVSPS- double mono pcb is finished, and i only have to get it made and assembled.

i based this scheme on the application guide from NS itself, combined with the second scheme on this page.

Lm3886 Bridged Problem



since i'm only just starting pcb design, i'd appreciate it if you could give it a look.

because i would like to keep it single side, there are some bridge points,
but i tried to keep the feedback resistors on the pins, and the signal paths as short as possible.



a few things i'm not entirely happy with is the ground path and i probably overdid it a little on the filter caps.

I might remove two of the big ones, and put them in front of the psu.


As a PSU i'm thinking of a LM338 regulated one probably around 26v. (8ohm speakers)

I'll be building it double mono as a power amp, since i've got a tube preamp coming.

for the signal caps i'm thinking of auricaps or other HQ stuff.



what do you guys think? is it any good? comments, even negative ones highly appreciated.
(but please a little more than "its cr*p )

thanks,

Thomas

ps: currently working on understanding the input impendance thing, wich i heard can be an issue with this design.

[ThomasR]

being ill, i have some time to work on this

i like the layout of this one better, but i'm a bit concerned regarding the length of the signal path on the bottom and right hand side.

also it has smaller caps, snubbers 'll go on the pins.

any input?

greets,

Thomas

[neeraj]

Hi,
have you made it or try it.
how doest it works?

Post some pics of completed amp.