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Hoffman Amps Forum image Author Topic: 40W PSE hy-gain.  (Read 2382 times)

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Offline DummyLoad

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40W PSE hy-gain.
« on: September 15, 2018, 02:55:04 am »
this thing is whole lotta fun. spin on 40W SE i posted early in the year. was wondering how it would sound with a bit more gain. added a cold bias unbypassed gain stage. interesting tone.

schematic shows 2x200uF series stack for first filter - actually is 2x450uF. 

--pete

Offline sluckey

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Re: 40W PSE hy-gain.
« Reply #1 on: September 15, 2018, 04:21:24 am »
Is that your bedroom amp?   :icon_biggrin:

A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline shooter

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Re: 40W PSE hy-gain.
« Reply #2 on: September 15, 2018, 09:52:05 am »
I love our innovation! how does the presence feature act/react, does it work well enough to steal?  :icon_biggrin:
My baby version gets a little treble bite-e close to max
Went Class C for efficiency

Offline DummyLoad

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Re: 40W PSE hy-gain.
« Reply #3 on: September 15, 2018, 12:45:11 pm »
I love our innovation! how does the presence feature act/react, does it work well enough to steal?  :icon_biggrin:
My baby version gets a little treble bite-e close to max


try it. range works ok. amp gets brighter sounding as it should when maxed. tightening up of the low freqs. is what really stands out.


--pete

Offline shooter

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Re: 40W PSE hy-gain.
« Reply #4 on: September 15, 2018, 03:20:53 pm »
thx Pete, downloaded the schematic
Went Class C for efficiency

Offline PRR

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Re: 40W PSE hy-gain.
« Reply #5 on: September 15, 2018, 03:34:37 pm »
> Is that your bedroom amp?

No. He puts it on his shoulder and carries it for miles.

 


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