Speaker magnet-power tube interaction?

[chuggy]

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

[tubenit]

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

[darryl]

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