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Old 5th January 2013, 09:53 PM   #1
tomchr is offline tomchr  United States
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Default 300B Globe physical dimensions

I'm working on the chassis layout for my 300B amp. I plan to place the 300Bs relatively close to the OPTs, so getting the dimensions right seems worthwhile.

Does anybody know the dimensions of the globe bulb 300B versions, such as the Fullmusic 300B/n? I'm looking for the largest diameter of the bulb.

Thanks,

~Tom
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Old 6th January 2013, 09:48 AM   #2
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Dimensions on this page here Fullmusic Full Music TJ tubes specifications
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Old 7th January 2013, 07:46 AM   #3
tomchr is offline tomchr  United States
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Sir. You rock. Thank you. For some reason when I searched, I only found the electrical specs, not the mechanical ones.

The globe is 65.5 mm in diameter at the widest part. The ST bulb is 61.5 mm (but I knew that from the JJ spec sheet).

~Tom
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Old 8th January 2013, 08:26 PM   #4
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My pleasure.

I have a pair of globe TJ300b's myself and my unscientific measuring method says that 65.5mm is about right!
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