Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: chuggy on December 01, 2012, 10:19:18 am

Title: Speaker magnet-power tube interaction?
Post by: chuggy on December 01, 2012, 10:19:18 am

I'm considering assembling a combo amp with lowish gain cathode biased 6L6 x2 (no reverb or trem) and a Peavey Black Widow 1201 (big magnet) speaker that would sit with magnet within an inch of the power tubes.  Will this proximity make for problems?

Thanks
Jim

Title: Re: Speaker magnet-power tube interaction?
Post by: tubenit on December 01, 2012, 03:40:34 pm

I've had power tubes VERY close to the speaker cab before.  Maybe close to an inch. They were 6V6's.

Not been an issue for me.  However, I would think if tubes are somewhat microphonic that it could be an issue.

with respect, Tubenit

Title: Re: Speaker magnet-power tube interaction?
Post by: darryl on December 01, 2012, 05:00:37 pm

A spacing of one inch should not be a problem.

Very close proximity has given some grief though:  http://www.chambonino.com/work/miscguitar/misc6.html (http://www.chambonino.com/work/miscguitar/misc6.html)