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Old 7th September 2013, 09:18 AM   #1
6J7 is offline 6J7
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Default 6V6

The 6v6 does not seem to be used often for "hifi", is there any particular reason for this?
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Old 7th September 2013, 02:00 PM   #2
TheGimp is offline TheGimp  United States
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EL84/6BQ5 does it better?

I think the 6V6 is in a position where it just does not have any advantages over other tubes in the same PO range.

They have been used in SE output stages of radios in the past.

There is no reason not to use them in audio amps, and there have been a few PP amps discussed here.
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Old 7th September 2013, 08:02 PM   #3
brucetassin is offline brucetassin  United States
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I built two versions of the RH-84 SE.
One using 6V6 and the other 6BQ5.
All components are the same in each amp except for
a few values to suit the tubes.
The 6V6 amp kicks butt over the 6BQ5!
I'm just saying.....
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Old 7th September 2013, 08:42 PM   #4
Drewaudio is offline Drewaudio  New Zealand
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I found something similar with my two push pull amps. The 6v6 baby Huey amp is awesome!
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Old 7th September 2013, 09:51 PM   #5
overtheairbroadcast is offline overtheairbroadcast  Canada
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They make pretty decent amps as can be seen in the modified Rick Spencer design in audioXpress 12/01 where he used 12V6 and 12SL7 in a Class AB push-pull amp but also included the modifications should you want to use the 6V6 and 6SL7 tubes instead.
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Old 7th September 2013, 10:40 PM   #6
Tubelab_com is offline Tubelab_com  United States
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The 6V6GT was quite common in late 40's and 50's vintage HiFi amps especially Magnavox. I used to get them from old console HiFi's and radios at the trash dump as a kid in the 60's. The consoles went out of fashion in the 60's and were replaced with component systems when stereo became popular. Cost and size were major drivers, so the 6BQ5 won on those counts.

Both were popular in guitar amps. Here, the 6V6 sings the blues, while the EL84 rocks.
Tubelab, it's 5 year mission. To explore strange new tubes, to seek out new circuits and topologies, to boldly go where no tube has gone before......
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Old 8th September 2013, 11:26 AM   #7
artosalo is offline artosalo  Finland
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I made a universal pcb having 6SL7 as a voltage amplifier / cathodyne phase splitter and 6V6, 5881, 6L6, EL34 etc. output tubes.

Click the image to open in full size.

Click the image to open in full size.

Below the schematic but with 5881 and higher +Ub.

Click the image to open in full size.

It works really well.
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Old 8th September 2013, 11:51 AM   #8
jazz is offline jazz  Netherlands
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Location: leiden, physically that is...

I've build a pp triode connected 6v6 amp about 12 years ago (first tube power amp ever) and it is still the sweetest and most delicate sounding thing I've ever made. Nothing (i've got) beats it with classical, jazz or singer songwriter music. No reason not to use it imho.

oh, what a beautifull day
I wanna go out and play!
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Old 8th September 2013, 05:16 PM   #9
DavesNotHere is offline DavesNotHere  United States
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6v6 was more aimed to the practice instrument amp and pro audio line stages in those years.

the consumer market was pushing "BQ" and "L" output types at that time.
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Old 8th September 2013, 05:21 PM   #10
Frank Berry is offline Frank Berry  United States
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Many audio consoles of the 50s used 'class A' 6V6 output stages. They were clean with lots of headroom.
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