Mantra's trim pots

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EdD
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Mantra's trim pots

Post by EdD »

Hi all,

Just got a Mantra and I love it :drool:

Can anyone tell me what its internal trim pots do?

Thanks
Ed
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blackout_kyle
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Re: Mantra's trim pots

Post by blackout_kyle »

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.
EdD
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Re: Mantra's trim pots

Post by EdD »

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
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