6N2, 6N6, 6N11 - Please help a beginner! (long) - Page 2

beamnet · 14th September 2005, 07:42 PM

my ecc99 are in a long tailed pair/direct coupled. Can i just reroute the heater and fire it up?

fdegrove · 14th September 2005, 10:24 PM

Hi,

Quote:

6n6p = ecc99

Not really.

Quote:

Can i just reroute the heater and fire it up?

Put a DC blocking cap in before yu do so, monitor it and adjust for DC offset if needed.

Ciao,

beamnet · 15th September 2005, 05:39 AM

should be no problem, as the stage before it is coupled directly...

but, id be reaaaly happy if you'd want to elaborate on ecc99< or> than 6n6p.

argo · 15th September 2005, 06:35 AM

Chinese 6N11 is more like Russian 6N23P-EV or western 6922/E88CC
Chinese 6N23 would be Russian 6N23P or western 6DJ8/ECC88
Chinese 6N1 is Russian 6N1P
Chinese 6N2 is indeed Russian 6N2P or as quoted – a western 6AX7 (was there ever such tube?)
Chinese 6N6 is Russian 6N6P - NO DIRECT Western substitute. Nevertheless quite good tube in right application.

I think the Russian equivalents are easier to find than original Chinese tubes nowadays and as for 6N1/6N1P or 6N2/6N2P the Russian made have also these ruggerized EV versions available but Chinese don’t.

beamnet · 15th September 2005, 06:40 AM

Guess that makes searching for subs easier!

The reason i keep askong about that 6n6p is that my circuit uses russian penthodes for output. I just like putting exotic things in my amp and would really like to experiment with different tubes.

And i think it looks prettier too!

i think i am going to do some ebaying

argo · 15th September 2005, 06:45 AM

If you have trouble finding Russian 6N23P-EV, 6N2P-EV, 6N6P or even 6N1P-EV (sometimes depending on circuit it could replace 6N23P-EV and even sound better) for good prices, drop me a mail.

PTSOUNDLAB · 3rd October 2005, 10:28 PM

Hello,

does somebody have tried 2 x 6n6p in parallel (4 triodes) ?
I would like to test a grounded cathode preamplifier with 2 6n6p (4 triodes) in parallel by channel.

For one channel I think of 2x 6n6p (4 triodes) in parallel, B+ 270V, one Ra=1K7, one Rk=60 ohms for a total of 80mA
Seems to be ok with TubeCad.

Opinions ?

Best Regards

Pascal

timhartley · 4th October 2005, 09:27 PM

Quote:

I've had trouble finding a valve technician in Scotland, so I might have to send the amp away for repair. Any tips as to where I might go would be very welcome.

You could try Phil at Bluebell Audio - Dundee.

martinab2 · 6th October 2005, 03:37 PM

Bluebell audio website here
or if you are near Aberdeen I might be able to help

PTSOUNDLAB · 28th October 2005, 09:04 AM

Hello,

finally, I have made some changes and my preamp is finished. Valve (5Z3) PSU 270V, Ra=750, RK=100. The 4 6n6p are in parallel with 12K input resistor and each valve has his own RK/CK. Operating point 200V/20mA
Great sound

Pascal

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14th September 2005, 07:42 PM	#11
beamnet diyAudio Member Join Date: Jun 2004 Location: enschede	my ecc99 are in a long tailed pair/direct coupled. Can i just reroute the heater and fire it up?

15th September 2005, 05:39 AM	#13
beamnet diyAudio Member Join Date: Jun 2004 Location: enschede	should be no problem, as the stage before it is coupled directly... but, id be reaaaly happy if you'd want to elaborate on ecc99< or> than 6n6p.

15th September 2005, 06:35 AM	#14
argo diyAudio Member Join Date: Feb 2001 Location: Estonia	Chinese 6N11 is more like Russian 6N23P-EV or western 6922/E88CC Chinese 6N23 would be Russian 6N23P or western 6DJ8/ECC88 Chinese 6N1 is Russian 6N1P Chinese 6N2 is indeed Russian 6N2P or as quoted – a western 6AX7 (was there ever such tube?) Chinese 6N6 is Russian 6N6P - NO DIRECT Western substitute. Nevertheless quite good tube in right application. I think the Russian equivalents are easier to find than original Chinese tubes nowadays and as for 6N1/6N1P or 6N2/6N2P the Russian made have also these ruggerized EV versions available but Chinese don’t.

15th September 2005, 06:40 AM	#15
beamnet diyAudio Member Join Date: Jun 2004 Location: enschede	Guess that makes searching for subs easier! The reason i keep askong about that 6n6p is that my circuit uses russian penthodes for output. I just like putting exotic things in my amp and would really like to experiment with different tubes. And i think it looks prettier too! i think i am going to do some ebaying

15th September 2005, 06:45 AM	#16
argo diyAudio Member Join Date: Feb 2001 Location: Estonia	If you have trouble finding Russian 6N23P-EV, 6N2P-EV, 6N6P or even 6N1P-EV (sometimes depending on circuit it could replace 6N23P-EV and even sound better) for good prices, drop me a mail.

3rd October 2005, 10:28 PM	#17
PTSOUNDLAB diyAudio Member Join Date: Dec 2001 Location: FRANCE / TOULOUSE	Hello, does somebody have tried 2 x 6n6p in parallel (4 triodes) ? I would like to test a grounded cathode preamplifier with 2 6n6p (4 triodes) in parallel by channel. For one channel I think of 2x 6n6p (4 triodes) in parallel, B+ 270V, one Ra=1K7, one Rk=60 ohms for a total of 80mA Seems to be ok with TubeCad. Opinions ? Best Regards Pascal

6th October 2005, 03:37 PM	#19
martinab2 diyAudio Member Join Date: Mar 2004 Location: aberdeen, uk	Bluebell audio website here or if you are near Aberdeen I might be able to help

28th October 2005, 09:04 AM	#20
PTSOUNDLAB diyAudio Member Join Date: Dec 2001 Location: FRANCE / TOULOUSE	Hello, finally, I have made some changes and my preamp is finished. Valve (5Z3) PSU 270V, Ra=750, RK=100. The 4 6n6p are in parallel with 12K input resistor and each valve has his own RK/CK. Operating point 200V/20mA Great sound Pascal