[Canuck57]

I recently purchased this amplifier used...

http://www.tubeaudio.com/page23.html

I'm having a problem with it. When i turn the volume knob clockwise there is a VERY loud humming noise coming through the speakers. When the volume control is at maximum (all the way clockwise) the music is loud and clear with no hum at all (sounds great). There is also no humming noise with the volume knob turned all the way to the left (counter clockwise).

Is this simply a problem with the volume pot?

I have very efficient Cerwin Vega speakers hooked up to the amp and I've tried two different sources.

Any help/suggestions you can offer would be appreciated.

The amp doesn't appear to have been damaged during shipment.

By the way I have no experience/knowledge with respect to soldering/wiring etc.

Are there any Do-It-Your-Selfers in the Guelph, KItchener, Oakville, Burlington, Mississauga, Toronto area that would mind taking a look at it for me and possibly fixing it. I'd pay you for your troubles or perhaps you could borrow some of my headphone equipment for awhile...

Thanks

 

[Paragon]

http://www.s5electronics.com/tubetech.html

Esp make sure the pot body is grounded as they mention.

 

[imported_farmer_rob]

http://www.head-fi.org/forums/showthread.php?t=17155

I'll email the co. as well- (john Ruff - I emailed him and cc'd you)
any help I'll gladly cover costs as well

( i shipped er)

Circuit Specialists Inc.
220 South Country Club Drive #2
Mesa, AZ 85210

Phone: (800) 528-1417 +1-480-464-2485
Fax: +1-480-464-5824
Telephone Hours: 8AM - 5PM MST Arizona Time Monday-Friday
NOTE: Arizona does not observe Daylight Savings Time.
jr@cir.com

 

[fortney]

At the University of G there is a prof named Tony Van Roon. He has a website all about electronics. Maybe he could help you.

Good luck.

F