Phase 90 volume question

[Jaycephas]

I just picked up a used MXR Phase 90 in good cosmetic condition and noticed that when I engage the pedal my volume drops off. Is this inherent in the pedal or is this a flaw? I have had many pedals and have not noticed this. My first phaser, so if this is normal, so be it.

 

[whoatherechunk]

hmmmm i have the mxr hase 90 evh. i have not noticed any volume drops. it is much more subtle than your average phaser. have you ever played another phase 90?

 

[Jaycephas]

Nope. Kinda weird that it does this. Anyone else experience this drop in volume?

 

[SpamBot]

Nope, had the regular one, no volume drop. What a boring phaser though

 

[RCCollins]

is there maybe a gain trimpot inside? i'm just guessing

 

[lowbass68]

Never experienced this on the Phase 90.

 

[KarateKid25]

is there maybe a gain trimpot inside? i'm just guessing

Yep.

Can't say I remember any volume drop with mine, so you might want to try adjusting the pot.

EDIT: Now I think about it, im not 100% sure if the trim pot controls gain... Don't screw with it just yet. If you do, mark it with a pen first!

MORE EDITING: I googled.... "It affects the center of the sweep as well as the symmetry of the LFO, so in addition to a super breathy phase across the higher frequencies that almost sounds like a flanger, you can wind up with some super choppy vibrato sounds or the most convincing vintage Univibe this side of Mr. Gilmour’s collection"

Possibly not going to fix your problem...

 

[EskimoBassist]

Ive got an MXR Phase 90, lovely pedal. Thins out your Bass a little though, I think I may swap it for an EHX XO Small Stone.

 

[Jateca]

I've always noticed a subtle boost when I switch mine on. Also distorts the mids a little bit, but not enough to be a problem.

Have you checked out the popular mods for a phase 90? If I remember right they only involve removing a couple of the resistors from the circuit. Just google it.

 

[TheMutt]

I've used a vintage Bud box script logo, the 80's block logo, and the newer Dunlop recreation. I didn't notice a volume drop with any of them, but I also didn't notice much phasing. Moved on to a Small Stone very shortly afterward, and more recently to a ModFactor for my phasing needs. Now I just need to figure out how to get everything to fit on the board...

 

[Jaycephas]

Okay, so I changed a couple of patch cables, moved effects around and...no more volume drop.

Go figure. Anyway, thanks for the feedback.