Sound Skulptor forums

Build help and troubleshooting => MP573 Microphone preamplifier => Topic started by: esppse on May 23, 2022, 04:11:33 AM

Title: Mp573 Volume trim to zero
Post by: esppse on May 23, 2022, 04:11:33 AM

Hi,

Is there anyway to mod the MP573 to be able to turn the volume to zero?

When I drive the unit into distortion, I can't lower the volume enough to prevent my converters from clipping.

Thanks

Title: Re: Mp573 Volume trim to zero
Post by: JPK on May 23, 2022, 08:32:06 AM

You need to replace R21 by a lower resistor or a wire.
But of course this will change the +10/-10dB law.

Title: Re: Mp573 Volume trim to zero
Post by: sdiazmun on January 18, 2023, 03:04:51 PM

Hi!

I'm interesting in this possible mod.
Which behaviour would have the volume trim if change the resistor for a wire? Zero attenuation in "+10" position and maximum attenuation in "-10" position?

Thanks in advance!!

Title: Re: Mp573 Volume trim to zero
Post by: JPK on January 19, 2023, 04:14:13 PM

+10 will stay the same and -10 will become "full attenuation".

Title: Re: Mp573 Volume trim to zero
Post by: sdiazmun on January 24, 2023, 01:16:33 PM

Thanks JeanPierre