Page 1 of 1
Mantra's trim pots
Posted: Fri Jan 21, 2011 5:28 pm
by EdD
Hi all,
Just got a Mantra and I love it
Can anyone tell me what its internal trim pots do?
Thanks
Ed
Re: Mantra's trim pots
Posted: Fri Jan 21, 2011 5:31 pm
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.
Re: Mantra's trim pots
Posted: Fri Jan 21, 2011 6:29 pm
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
So ehm... what do they do to the sound. I'm running it on 18 volts btw... any advice?
Thanks!
Ed