6P3S-E in place of 6V6

[MellowTone]

Hi, I have a strange attraction to the Russian 6P3S-E (6L6G equivalent) tube, don't ask me why. I'd like to put something together with it.

I've been looking at this kit at MableAudio here which uses two 6V6s and a 12AX7 per side.

My question is this: Would I be able to directly drop in a set of the 6P3S-E tubes? I recognize that I would (strictly speaking) have to replace the power and output transformers (for the higher current used and lower primary impedance)

Any thoughts? Cheers, Nic.

[rock4016]

I don't think you'll hurt anything by doing so, but if you want to optimize the 6P3S-E you'll need to be able to change their bias point and B+ voltage. The other thing to consider is that your driver may have to swing more voltage to drive the 6P3S-E (to full power), so you'll want to know what that is capable of.

Just my .02 cents!

[bigwill]

Just don't try and use those things as a 6L6GT

[Ty_Bower]

Originally posted by psychocow21
Hi, I have a strange attraction to the Russian 6P3S-E (6L6G equivalent) tube, don't ask me why.

Why do you have such an attraction to a beautiful and magnificent tube?

Just don't try and use those things as a 6L6GT (sic)

No, they aren't a 6L6GC substitute. Keep them under twenty watts total dissipation, and they will be fine. I've run mine at 450 VDC with no worries.

[rock4016]

Are those triode strapped, UL or Pentode? How much voltage can the grid take?

[Ty_Bower]

It's a Tubelab Simple SE. I've run it both UL and triode strapped. In all fairness, it is cathode biased so you should subtract the roughly forty volts at the cathode from the plate voltage. Even still, there's over 400 volts across the tube. In either triode or UL, the screen grid voltage isn't far from the plate (maybe a couple volts either way.)

[gingertube]

Nic,
I've used these chassis etc from Mable and so can offer a bit of guidance.

The main problem you are going to run into is physical size. With a bit of metal hacking I did manage to fit Mable's larger Power Tranny, the one from their EL34 amp. I also managed to fit Hammond 1608 Output Trannies in place of the Mable ones. Unfortunately they would NOT be big enough for the 63PS-E.

I suggest you look at their EL34 amp chassis
http://www.mableaudio.com/www-web/sh...etal%20chassis

I have some other advise about a good (RECOMMENDED) Australian Distributor of the Mable stuff but don't want to inflict spam upon him by posting contact details here. Send me a PM if interested.

Cheers,
Ian

[MellowTone]

Originally posted by Ty_Bower


Why do you have such an attraction to a beautiful and magnificent tube?






No, they aren't a 6L6GC substitute. Keep them under twenty watts total dissipation, and they will be fine. I've run mine at 450 VDC with no worries.

Originally posted by Ty_Bower
It's a Tubelab Simple SE. I've run it both UL and triode strapped. In all fairness, it is cathode biased so you should subtract the roughly forty volts at the cathode from the plate voltage. Even still, there's over 400 volts across the tube. In either triode or UL, the screen grid voltage isn't far from the plate (maybe a couple volts either way.)

Hey there Ty_Bower, that's exactly my thinking, they're just a beautiful tube. I love the look of the coin base and the whole thing just strikes a chord with me.
How does the amp sound? I've been considering a Tubelab amp for a while. What's the setup of that amp? I mean power and output t/former specs and the like.

Originally posted by gingertube
Nic,
I've used these chassis etc from Mable and so can offer a bit of guidance.

The main problem you are going to run into is physical size. With a bit of metal hacking I did manage to fit Mable's larger Power Tranny, the one from their EL34 amp. I also managed to fit Hammond 1608 Output Trannies in place of the Mable ones. Unfortunately they would NOT be big enough for the 63PS-E.

I suggest you look at their EL34 amp chassis
http://www.mableaudio.com/www-web/sh...etal%20chassis

I have some other advise about a good (RECOMMENDED) Australian Distributor of the Mable stuff but don't want to inflict spam upon him by posting contact details here. Send me a PM if interested.

Cheers,
Ian

Hi Ian, an excellent man to hear from by the sounds of it. What did you convert it into? How does the amp sound after your modifications? Some pictures would be fantastic. How long did postage take, by the way?

Cheers, Nic.

[Ty_Bower]

Originally posted by psychocow21
How does the amp sound? I've been considering a Tubelab amp for a while. What's the setup of that amp? I mean power and output t/former specs and the like.

It sounds pretty good. It won't compete with a big push/pull KT88 powered amp (Dynaco Mk3) for sheer wattage, so if you like it loud all the time you should look elsewhere. If you enjoy the single ended sound, the Simple SE does that very well. I've got another single ended amp with "real" triodes and directly heated filaments which I think sounds a little bit better under some situations, but it's a close call. The Simple SE makes a fair amount of power for a single ended amplifier and the tubes are much more economical than some of the pricey DHTs. It's very flexible in what you can put into the octal sockets, so you have endless choices for tube rolling.

The power transformer on mine is a Hammond 374BX. I'm very happy with it as a power transformer. Structurally, the PT is very tight with virtually no mechanical hum. I've had problems with other PTs humming in my house. The output transformers are the Transcendar 10 watt, 5K:8. You can find them on eBay from the seller ggaet. I got the optional UL lead on mine. I wrote a thread while I was building it. You can find it here: Another Simple SE builder

[Geek]

Could very well be using a 6P6S. Either are a gorgeous sounding tube