Looking for dual power triodes. - Page 3

coresta · 3rd October 2006, 04:46 PM

Caution : The 6360 do not like at all the TRIODE MODE @ more than 150v !!!!!! In tetrode, it's great (with OA2 screen regulation)

Graeme · 4th October 2006, 05:36 AM

Coresta,

Your comments surprise me as I have graphed the tube as a triode beyond 350v with no proiblems whatsoever........

I referred to Telefunken figures before - as a tetrode the tube has G2 limitation of 200v - excess of your statement - and this figure is as a tetrode. Like many tubes this figure can be exceeded in the triode-connection.

Please explain more where your stated limitation is derived from.

If you read Telefunken figures, there is data where a single tube is utilised in AB1 modulator configuration - both with and without grid-current occuring. This tube is not a pussy - but I would hesitate to touch the glass under operation.....Each anode/plate is specced at 10.8 watts.....that's a horrible figure for the glass-size.

Telefunken-specs, which I accept, reveal that the Mugig2 is 7.5,
which is highly relevant for a triode application........

Happy to share graphed responses as a triode - pencilled on graph-paper - so they do not scan well.......better forwarded by e-mail if you seek.

Graeme

Graeme · 4th October 2006, 05:40 AM

Tom,

E-Mail me - happy to respond.

Graeme

coresta · 4th October 2006, 06:28 AM

Graeme,
I 've done a try at triode mode with NOS Philips ones : One plate on each tube became red before the other one

even at 30mA each tube ! tetrode mode is very simple for less problems of overdissipating . imho !
Pierre

ashok · 21st December 2006, 04:32 AM

I have a pair of 6A6 dual triodes . I can't find any data on this.
Is this a low power triode and can this be used in a preamp ?
Anyone know how this tube sounds ?
I couldn't find any data sheets using google . Maybe I should try again.
Cheers.

ray_moth · 21st December 2006, 06:03 AM

6A6 seems similar to 6N7, except for its UX-7 pin base. It's designed as a Class B amplifier, capable of 10w output into (I think) 8k p-p load. Frank Phillipse's site has 3 data sheets for 6A6.

AndreasS · 21st December 2006, 07:19 AM

a little bigger...

Andreas

http://www.jogis-roehrenbude.de/Roeh...ioden/2C34.htm

21st December 2006, 04:32 AM	#25
ashok diyAudio Member Join Date: Jun 2002 Location: 3RS	I have a pair of 6A6 dual triodes . I can't find any data on this. Is this a low power triode and can this be used in a preamp ? Anyone know how this tube sounds ? I couldn't find any data sheets using google . Maybe I should try again. Cheers. __________________ AM

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3rd October 2006, 04:46 PM	#21
coresta diyAudio Member Join Date: Mar 2005 Location: Paris	Caution : The 6360 do not like at all the TRIODE MODE @ more than 150v !!!!!! In tetrode, it's great (with OA2 screen regulation)

4th October 2006, 05:36 AM	#22
Graeme diyAudio Member Join Date: Feb 2002 Location: Nelson, New Zealand	Coresta, Your comments surprise me as I have graphed the tube as a triode beyond 350v with no proiblems whatsoever........ I referred to Telefunken figures before - as a tetrode the tube has G2 limitation of 200v - excess of your statement - and this figure is as a tetrode. Like many tubes this figure can be exceeded in the triode-connection. Please explain more where your stated limitation is derived from. If you read Telefunken figures, there is data where a single tube is utilised in AB1 modulator configuration - both with and without grid-current occuring. This tube is not a pussy - but I would hesitate to touch the glass under operation.....Each anode/plate is specced at 10.8 watts.....that's a horrible figure for the glass-size. Telefunken-specs, which I accept, reveal that the Mugig2 is 7.5, which is highly relevant for a triode application........ Happy to share graphed responses as a triode - pencilled on graph-paper - so they do not scan well.......better forwarded by e-mail if you seek. Graeme

4th October 2006, 05:40 AM	#23
Graeme diyAudio Member Join Date: Feb 2002 Location: Nelson, New Zealand	Tom, E-Mail me - happy to respond. Graeme

4th October 2006, 06:28 AM	#24
coresta diyAudio Member Join Date: Mar 2005 Location: Paris	Graeme, I 've done a try at triode mode with NOS Philips ones : One plate on each tube became red before the other one even at 30mA each tube ! tetrode mode is very simple for less problems of overdissipating . imho ! Pierre

21st December 2006, 06:03 AM	#26
ray_moth diyAudio Moderator Emeritus Join Date: Jan 2004 Location: Jakarta	6A6 seems similar to 6N7, except for its UX-7 pin base. It's designed as a Class B amplifier, capable of 10w output into (I think) 8k p-p load. Frank Phillipse's site has 3 data sheets for 6A6.

21st December 2006, 07:19 AM	#27
AndreasS diyAudio Member Join Date: May 2005 Location: near Duesseldorf	a little bigger... Andreas http://www.jogis-roehrenbude.de/Roeh...ioden/2C34.htm

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