What does PRESENCE knob set? - Amp ignorance is my REAL draw

Kramom · #1 03-25-2001, 11:23 AM

LAME deserves FLAME! But still, can You answer my easy question? PLEEZE?:lame:

bob oakman · #2 03-25-2001, 04:46 PM

Not positive if it does more than boost EQ at around 2.5K. That’s all it sounds like to me.

tagg 7 · #3 03-25-2001, 06:38 PM

Well depending on what amp it is the presence means a lot. It can just mean a boost in volume, but if its in the preamp that means more distortion. *It will make the signal stronger going into your amp which pushes it to overdirve/and distort. If you want to sound heavy crank that baby up.

buzz

Kyle Odom · #4 03-25-2001, 08:19 PM

Technically what a presence control is: a tone control (in the higher ranges) in the power amp driver stage. *Probably first concieved to take the shrill highs out of a really bright amp. *Now adays we like those shrill highs, so we run the control high

*You won't hurt anything by running it in any setting. *Some amps it is really noticable when you make the slightest adjustments (Most Mesas and some Marshalls,) and some it doesn't seem to do much. *(Like my Legacy.)
Think that got it.
KO

Gabe Nickelson · #5 03-26-2001, 06:01 PM

The presence knob really makes a difference in my Marshall JTM60 Combo amp. *It really brightens the sound. *I have it set 3/4 up and depending on what I want to play, I adjust it. *

Personally, I'd define it as a 'crispness' knob for my JTM60. *Huge, *huge change from min to max. *Never messed around with the presence knob on my JCM800 or V100 - probably because they're so high up I can't reach them on my stack! *I think I have them around 50% and leave em.

Gabe