Rectoverb presence knob

[estring]

Seems like the presence knobs on my ROV only kick in around 3:00-5:00 on all channels. I sweep from 9:00 to 3:00 I cant hear any noticeable change in tone....????

Anyone experience this??

Thanks

 

[Maynehead]

I noticed the same thing on my Dual Rec but only on the raw and vintage modes. In modern mode the presence has more of an effect in the lower range (although still not dramatic).

I've got a whole new set of tubes coming so if that helps I'll let you know.