Suitable OT?

[Tommy_D]

Hello

I'm wondering whether I can occasionally use a high quality ~50W 4kohm OT with 4x6L6WGB if I wanted to?

If I was running 4x6L6 I would be running 8ohm speakers (2x16ohm in parallel) into the 16ohm tap (tubes would see 2kohm) and I would be using power scaling. The OT would never actually see 80W.

Would that work?

I could of course use a 4x6L6 OT but I'm thinking it would be too big to run 4x6V6 without affecting the tone.

Thoughts appreciated please - thanks

[Stevem]

I don't understand the occasionally part of your question?

[TomAmp]

I’m told 4x6V6 is nicer than 2x6V6. Presumably the same is true for 4x6L6 vs 2x6L6

So if it turns out I like the flavour of 6L6, could I run 4x6L6 if I wanted to with a 50W, 4k OT?

With a little bit of power scaling and an attenuator, can it be interesting sonically if the OT gets into saturation?

My hunch is that conversely running 4x6V6 into a 100W OT would not be that great.

The alternative is to build a 4x6V6 amp with a 50W OT and a 4x6L6 with a 80-100W OT but that’s more work and more money.

[Phil_S]

I’m told 4x6V6 is nicer than 2x6V6. Presumably the same is true for 4x6L6 vs 2x6L6...

Stop listening to the people who are telling you such things.

[pompeiisneaks]

I’m told 4x6V6 is nicer than 2x6V6. Presumably the same is true for 4x6L6 vs 2x6L6...

Stop listening to the people who are telling you such things.

That's a debatable point. I know for a fact that Jelle and several others are firm believers that this is true. I don't know for sure that it is either, but the claim was that with 2x any power tubes has a specific amount/type of imbalance that is somewhat clear/linear, the one tube will always be slightly mismatched from the other by some mA of current, unless you use per tube bias pots. Then you can get a pretty equal balance. OTOH with 4x power tubes you have 4 completely different and slightly off balanced tubes from each other, from one pair to the other and between the OT halves. The suggested theory posited on this by Jelle was that this causes a lot more complex overtones and 2nd order harmonics I believe is how it was explained to me. (Or maybe more random unexpected harmonics, just adding complexity and depth to the signal)

At any rate, I'm still not a firm believer of it, myself, but it is a plausible theory that would need some research. OTOH you can just build it and see for yourself

~Phil

[Phil_S]

That's interesting...I wonder. In any case, you can build an amp that has 4 power tube sockets, and an OT with 4-8-16 ohm outputs. Then you can pull one pair of power tubes and change the output tap on your speaker to match the impedance change. This way you have the best of both worlds!

[thetragichero]

more louder is more better so i get it