Mantra's trim pots

by **EdD** » Fri Jan 21, 2011 5:28 pm

Hi all,

Just got a Mantra and I love it :drool:

Can anyone tell me what its internal trim pots do?

Thanks
Ed

by **blackout_kyle** » Fri Jan 21, 2011 5:31 pm

Congrats Ed!

The trimpots are for biasing 2 jfet gain stages. At the top left of the pcb you'll notice test points labeled correspondingly for the + lead of your multimeter. We set both to 5V when using a 9V test supply.

by **EdD** » Fri Jan 21, 2011 6:29 pm

blackout_kyle wrote:Congrats Ed!

The trimpots are for biasing 2 jfet gain stages. At the top left of the pcb you'll notice test points labeled correspondingly for the + lead of your multimeter. We set both to 5V when using a 9V test supply.

Magic, got it :thumb:

So ehm... what do they do to the sound. I'm running it on 18 volts btw... any advice?

Thanks!
Ed

Mantra's trim pots

Mantra's trim pots

Re: Mantra's trim pots

Re: Mantra's trim pots

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