2:90 preamp loud hum

Triaxis, Quad Preamp, Stereo Power series, Recto Preamp

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opauly
Bottle Rocket
Posts: 10
Joined: Thu Apr 04, 2019 12:36 am

2:90 preamp loud hum

Post by opauly » Thu Jun 06, 2019 5:23 pm

Hello!
My 2:90 preamp is having a loud hum in channel A. Channel B does not have it. I already tested all tubes (with a tube tester) and all are fine. Hum goes away when guitar is unplugged, but in that case why is channel B not having that loud hum?

Thanks!

opauly
Bottle Rocket
Posts: 10
Joined: Thu Apr 04, 2019 12:36 am

Re: 2:90 preamp loud hum

Post by opauly » Wed Jun 26, 2019 4:37 pm

Any ideas?

Henz
Mark II
Posts: 102
Joined: Wed May 18, 2016 11:05 pm

Re: 2:90 preamp loud hum

Post by Henz » Wed Jun 26, 2019 11:15 pm

Hello, Forgive me but are you refering to the 2:90 Power Amp?
MKIIC+
2:90
4x12 Recto Cab w/ Eminence and V30's
Home made 2x12 half open cab w/ Eminence and V30's
Rocktron Patchmate, Rocktron Intellifex, TS10 Tubescreamer

opauly
Bottle Rocket
Posts: 10
Joined: Thu Apr 04, 2019 12:36 am

Re: 2:90 preamp loud hum

Post by opauly » Fri Jun 28, 2019 11:04 pm

Yes! I am sorry for the title, it is the power amp. The 2:90 stereo simulator.

Henz
Mark II
Posts: 102
Joined: Wed May 18, 2016 11:05 pm

Re: 2:90 preamp loud hum

Post by Henz » Sat Jun 29, 2019 11:20 pm

Thats ok. man ,I cud use much more info on your setup to try to help. Are you plugging guitar directly in the input of 2:90 on the back and using Instrument switch.... etc... A hum cud be 1001 things. try to tell me your signal path. Blessings. Jim
MKIIC+
2:90
4x12 Recto Cab w/ Eminence and V30's
Home made 2x12 half open cab w/ Eminence and V30's
Rocktron Patchmate, Rocktron Intellifex, TS10 Tubescreamer

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