Aikido 6SN7 input 5687 output

eeyore · 27th March 2009, 11:15 AM

Thinking of putting together an Aikido line preamp with a 6SN7 or 12SN7 on the input tubes and a 5687 on the output. Anyone tried this combination?

Karsten Sømand · 27th March 2009, 01:35 PM

Hi eeyore!

I don´t know if this combination is possible at all? Maybe if you are going to PTP-wireing the amplifier???.

According to Broskies kits this is not possible since the 6SN7 is a 8-pin tube and the 5687 is a 9-pin tube.

AFAIK the 5687 has a very good reputation so if you would like this tube in the output stage you could try the 6CG7 (alternatively; 6FQ7 = 6CG7 without the screen between plates) instead. The 6CG7 is the 9-pin version of the 6SN7.

Kind regards

Karsten

eeyore · 27th March 2009, 09:17 PM

You are right in that I am planning to PTP wire it. Am looking for a combination to give good sound but will also be able to drive two amps at once since I am going to biamp with a LF sub and then a FR from around 100 to 200 hZ up.

27th March 2009, 11:15 AM	#1
eeyore diyAudio Member Join Date: Aug 2005	Aikido 6SN7 input 5687 output Thinking of putting together an Aikido line preamp with a 6SN7 or 12SN7 on the input tubes and a 5687 on the output. Anyone tried this combination? __________________ DF http://diy-audio-blog.blogspot.com

27th March 2009, 09:17 PM	#3
eeyore diyAudio Member Join Date: Aug 2005	You are right in that I am planning to PTP wire it. Am looking for a combination to give good sound but will also be able to drive two amps at once since I am going to biamp with a LF sub and then a FR from around 100 to 200 hZ up. __________________ DF http://diy-audio-blog.blogspot.com

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27th March 2009, 01:35 PM	#2
Karsten Sømand diyAudio Member Join Date: Mar 2006 Location: Outside Copenhagen	Hi eeyore! I don´t know if this combination is possible at all? Maybe if you are going to PTP-wireing the amplifier???. According to Broskies kits this is not possible since the 6SN7 is a 8-pin tube and the 5687 is a 9-pin tube. AFAIK the 5687 has a very good reputation so if you would like this tube in the output stage you could try the 6CG7 (alternatively; 6FQ7 = 6CG7 without the screen between plates) instead. The 6CG7 is the 9-pin version of the 6SN7. Kind regards Karsten