Aikido REV D pcb

807tubenut · 19th November 2010, 09:22 PM

Looking for a good starting point on the resistor values for the 1st and 2nd stage tubes, I have a quad of NOS matched Phillips 6SN7GTB's. B+ is 300v regulated.

DualTriode · 19th November 2010, 11:15 PM

Hello,
Check the last page of this user manual.
http://www.tubecad.com/Octal_Aikido_PCB.pdf
DT
All Just for fun!

807tubenut · 20th November 2010, 12:01 AM

Yes, I have that book myself, looking for recommended values, from some one running one of these

DualTriode · 20th November 2010, 03:25 AM

Hello,
I have 12SN7’s installed in the octal Aikido I use(B+ := 300). I assembled the PCB thinking that I may try rolling in 12SL7’s at the input position. I have 1000 ohm resistors installed at the input position and 300 ohm resistors installed at the outputs. The 12SN7’s provide adequate gain. I never rolled in the 12SN7’s. The 1000 ohm resistors remain. I have never given them a thought until you ask. The 300 ohm resistors allow a little more current to drive longer interconnects.
DT
All Just for fun!

807tubenut · 27th November 2010, 02:38 PM

Cool! I got the preamp up and going on the new dynamotor PSU, I need to finish the other stereo board so I can get them in my car!

Ill snap a few pics when I get the system up and going.

19th November 2010, 09:22 PM	#1
807tubenut diyAudio Member Join Date: Jun 2010 Location: SinCity	Aikido REV D pcb Looking for a good starting point on the resistor values for the 1st and 2nd stage tubes, I have a quad of NOS matched Phillips 6SN7GTB's. B+ is 300v regulated. __________________ All my battles have been won, But the war has just begun.

20th November 2010, 12:01 AM	#3
807tubenut diyAudio Member Join Date: Jun 2010 Location: SinCity	Yes, I have that book myself, looking for recommended values, from some one running one of these __________________ All my battles have been won, But the war has just begun.

27th November 2010, 02:38 PM	#5
807tubenut diyAudio Member Join Date: Jun 2010 Location: SinCity	Cool! I got the preamp up and going on the new dynamotor PSU, I need to finish the other stereo board so I can get them in my car! Ill snap a few pics when I get the system up and going. __________________ All my battles have been won, But the war has just begun.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
IVY 1 ( PCB Rev. 2.01 )	ghg	Twisted Pear	2	12th April 2010 04:15 PM
GlassWare Audio Aikido Rev C 9-pin board - stuffed & tested with 6GU7s	beeah	Swap Meet	7	15th September 2009 05:27 PM
FS: Simple UGS PCB, rev. 3	Wasineveritis	Swap Meet	4	31st May 2009 11:05 AM
Need help on 3875 Rev 3 PCB placement in enclosure	ransom peek	Chip Amps	7	21st March 2005 08:19 PM
Aleph-X Official PCB rev. Alpha	hifiZen	Pass Labs	101	15th December 2002 10:21 AM

19th November 2010, 11:15 PM	#2
DualTriode diyAudio Member Join Date: Aug 2009 Location: Sacramento	Hello, Check the last page of this user manual. http://www.tubecad.com/Octal_Aikido_PCB.pdf DT All Just for fun!

20th November 2010, 03:25 AM	#4
DualTriode diyAudio Member Join Date: Aug 2009 Location: Sacramento	Hello, I have 12SN7’s installed in the octal Aikido I use(B+ := 300). I assembled the PCB thinking that I may try rolling in 12SL7’s at the input position. I have 1000 ohm resistors installed at the input position and 300 ohm resistors installed at the outputs. The 12SN7’s provide adequate gain. I never rolled in the 12SN7’s. The 1000 ohm resistors remain. I have never given them a thought until you ask. The 300 ohm resistors allow a little more current to drive longer interconnects. DT All Just for fun!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read