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Old 29th December 2012, 09:18 PM   #1
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Default quicky rebuild 6v6 to 807

Hi

I have everything ready to build 2x 6v6 pp mono blocks.

but my better half likes the 807 coke bottle shaped tubes better than the newer 6v6.. i've searched for 6v6 coke bottle shaped tubes but a matched quad is pretty expensive...

I was planning on using the dynaco schematic found at diyaudioprojects

while traveling home just now, i was searching ebay and saw a nice matched quad of 807's for a very good price.

is it worth the effort, or even possible to use the 807 instead of the 6v6?
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Old 29th December 2012, 09:34 PM   #2
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Can you make adapters, so you wife can select when she wants better look, when she wants better sound?

Yes, it is possible to use 807 instead of 6V6, but 6V6 tubes are more linear.
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Old 29th December 2012, 09:39 PM   #3
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Apples and oranges, sorry. All of the magnetics, both power and O/P, needed for a 6L6 family amp are different than those you possess. SOAF has to yield, in this case. In any event, you listen to an amp.
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Old 29th December 2012, 09:46 PM   #4
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Eli, if he wants the same power from 807 like from 6V6, no need for different power and output transformers.
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Old 29th December 2012, 09:58 PM   #5
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that's 2 quick responses

well for her it's all about the looks, but seems (as I already thought ) I should stick to the 6v6 tubes then.

an adapter is a nice idea though, and power is not an issue, any clues on how to?

thanks for your replies
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Old 29th December 2012, 10:04 PM   #6
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Last, but not least: Don't forget that 807's, as all 6L6 derivatives, require twice as much heating current than the 6V6.

Best regards!
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Old 29th December 2012, 10:20 PM   #7
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heater current wouldn't be a problem. the power transformers have higher specs than needed already.

I had a quick look at the datasheet 807 / 6v6gt

seems the 807 wants 0.9 amps and the 6v6gt wants 0.45 amps

so that would be 1.8 amps + a 6sl7 0.3amps = 2.1 amps

and the PT gives me 3 amps, so that would be fine...
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Old 30th December 2012, 12:54 AM   #8
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put a cover over it. Problem solved, everyone happy.
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Old 30th December 2012, 02:24 AM   #9
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Nah, there is a better way.

Mount the 6V6 tubes inside the chassis, with holes for air circulation. Then put some 807s on top of the chassis for looks, don't connect them to anything.
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Old 30th December 2012, 02:41 AM   #10
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You could get the chinese coke bottle 6L6. No need to use adapters if you want to switch from 6V6's to those.
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