JVM 410H V6 slot, pondering ecc832 vs ecc823

Redguitar

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I want to try one of these tubes,...Ecc823 or Ecc832 in the initial V6 slot. Per google searches, I see different, conflicting reviews on how it reacts.
I want a lower initial gain (V6B) and a standard gain factor in (V6A) One of these tubes does that trick. The other does the opposite of providing standard gain initially, then lower gain in other modes. Which one is the recommended one to try first, affecting V6B only?

I tried a 5751 that reduces gain in "A" and "B", and it did nice for clean orange, but was a letdown for other hi-gain orange and red modes of Ch 3 & 4.

All about trying to tame the Beast!
 

jimmyo

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I use ECC823 for my JVMs. I set the gain on about 6 on OD1 and OD2 and the green, amber and red modes sound balanced. The more you turn up the gain the more the sound ‘fattens’ up
 

spacerocker

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An ECC 823 in V6 will give Standard gain in all channels and modes except Clean Red, OD1 Orange and Red, and OD2 Orange and Red, which will be lower.

An ECC832 in V6 will lower the gain considerably in all Channels and modes.....
 

Redguitar

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An ECC 823 in V6 will give Standard gain in all channels and modes except Clean Red, OD1 Orange and Red, and OD2 Orange and Red, which will be lower.

An ECC832 in V6 will lower the gain considerably in all Channels and modes.....
ECC832 might be the one to try then, if it's "A" half still has the gain factor of 100 for the affected orange and red modes.
 

spacerocker

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ECC832 might be the one to try then, if it's "A" half still has the gain factor of 100 for the affected orange and red modes.

I would go with the ECC823.

The 832 will put the low gain section in ALL channels and modes, the low gain section has a typical gain of about 17 compared to 100 for a normal ECC83

Don't forget that V6b (which is the low gain section of an ECC832) is used on every single mode, whereas the V6a section is ONLY used for OD1/2 Orange and Red, and Clean Red.....
 

Redguitar

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I would go with the ECC823.

The 832 will put the low gain section in ALL channels and modes, the low gain section has a typical gain of about 17 compared to 100 for a normal ECC83

Don't forget that V6b (which is the low gain section of an ECC832) is used on every single mode, whereas the V6a section is ONLY used for OD1/2 Orange and Red, and Clean Red.....
Would you agree that pins 6, 7, 8 are the "B" of V6? Just for accurate, common technical talk...
 

Vesperado

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Increase the value of the cathode resistor at V6 a few k, say 22-33k and see if that helps, otherwise lower the bias on the output valves and/or increase the bias resistor value as well, say 4k7-6k8 and see what you prefer. I bias mine at 55% plate dissipation with only one valve per side, acheiving 30W operation. Sounds absolutely beast.
 

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