Survey: Aikido distortion

SY · 27th February 2006, 11:40 PM

I'm curious if anyone who's built an Aikido has done any distortion measurements, especially harmonic distribution. Some circuit particulars, too, please.

SY · 28th February 2006, 03:17 AM

My goodness, all that interest, all those boards, all those builders, and nobody has put the thing on the bench???

Andypairo · 28th February 2006, 06:30 AM

One should have a suitable bench ;-)

Me not, at least for the moment.

Cheers

Andrea

Tubes4e4 · 28th February 2006, 09:21 AM

Hi SY,

Quote:

Originally posted by SY
My goodness, all that interest, all those boards, all those builders...

That was yesterday. Like with all fashions, yesterday means yesteryear.

What might be the next fashion? Maybe using pentodes as pentodes in small signal circuits? Oh, what a truly shocking alta moda that would be

Yawning, Tom

Bas Horneman · 28th February 2006, 10:25 AM

Quote:

My goodness, all that interest, all those boards, all those builders, and nobody has put the thing on the bench???

If people knew how to do proper distortion measurements. They would not be ordering boards but would do point to point. The boards just make it that much easier (and neater).

The only distortion measurements I know of are on John Broskie's site.

http://www.tubecad.com/2005/January/blog0032.htm

Gluca · 28th February 2006, 10:38 AM

OK measurements are measurements ... maybe some O/Scope shots ...

Or just listening impressions ... do ya prefer it or the now-classical-outoffashion CF/SRPP/etc... ?

Ciao
Gianluca

maynardg · 28th February 2006, 11:09 AM

Mine is P-to-P, 220V B+ circuit in Blog 30. 6CG7 into 5687. CLCRCRC PS with regulated 12V DC heaters. I built it on a chassis from a AES AE3 preamp using mostly the existing power supply.

Sound is better than the AE3, which was a typical voltage amp-cathode follower 6SN7 affair. Better in every way. Dead quiet, more dynamic and detailed. More true to life for lack of a better term. Piano sounds like piano - nothing soft or muddled, nothing edgy.

No measurements except the one that counts - listening pleasure.

MG

Geek · 28th February 2006, 11:40 AM

I was asked by the creator of the Aikido PCB's to do a test between 1.25mA and 2mA Ia. Sonically irellevent. Because of that, I never 'scoped it.

I agree with maynardg - "No measurements except the one that counts - listening pleasure."

SY · 28th February 2006, 11:41 AM

Quote:

Originally posted by Bas Horneman

If people knew how to do proper distortion measurements. They would not be ordering boards but would do point to point. The boards just make it that much easier (and neater).

The only distortion measurements I know of are on John Broskie's site.

http://www.tubecad.com/2005/January/blog0032.htm

Yeah, I saw those, and that was a good starting point. I'm quite interested in the effects of tubes, operating point, and circuit trimming.

BTW, I'm an exception to your rule- I have it built on a board (one of Broskie's- it is a heroic PCB), yet I know how to do proper distortion measurements...

Bas Horneman · 28th February 2006, 11:52 AM

Quote:

BTW, I'm an exception to your rule - I have it built on a board (one of Broskie's- it is a heroic PCB), yet I know how to do proper distortion measurements...

There are always exceptions to the rule.

27th February 2006, 11:40 PM	#1
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	Survey: Aikido distortion I'm curious if anyone who's built an Aikido has done any distortion measurements, especially harmonic distribution. Some circuit particulars, too, please. __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

28th February 2006, 03:17 AM	#2
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	My goodness, all that interest, all those boards, all those builders, and nobody has put the thing on the bench??? __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

28th February 2006, 06:30 AM	#3
Andypairo diyAudio Member Join Date: Sep 2002 Location: near Milano , Italy	One should have a suitable bench ;-) Me not, at least for the moment. Cheers Andrea __________________ I don't believe in audiophile components - except when I can get them at frugal-phile(tm) prices

28th February 2006, 11:09 AM	#7
maynardg diyAudio Member Join Date: May 2003 Location: FL	Mine is P-to-P, 220V B+ circuit in Blog 30. 6CG7 into 5687. CLCRCRC PS with regulated 12V DC heaters. I built it on a chassis from a AES AE3 preamp using mostly the existing power supply. Sound is better than the AE3, which was a typical voltage amp-cathode follower 6SN7 affair. Better in every way. Dead quiet, more dynamic and detailed. More true to life for lack of a better term. Piano sounds like piano - nothing soft or muddled, nothing edgy. No measurements except the one that counts - listening pleasure. MG __________________ MG

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

28th February 2006, 10:38 AM	#6
Gluca tarmac ripper diyAudio Member Join Date: Nov 2004 Location: Back to Italy	OK measurements are measurements ... maybe some O/Scope shots ... Or just listening impressions ... do ya prefer it or the now-classical-outoffashion CF/SRPP/etc... ? Ciao Gianluca

28th February 2006, 11:40 AM	#8
Geek diyAudio Member Join Date: Sep 2004	I was asked by the creator of the Aikido PCB's to do a test between 1.25mA and 2mA Ia. Sonically irellevent. Because of that, I never 'scoped it. I agree with maynardg - "No measurements except the one that counts - listening pleasure."

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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
24v aikido distortion	poolorpond	Tubes / Valves	13	17th February 2008 05:52 PM
Survey fun!	danielwritesbac	Chip Amps	23	27th January 2008 05:26 AM
JLH Power Survey	astouffer	Solid State	15	27th September 2005 04:23 PM
DSP (offering) Survey	blu_line	Digital Source	20	2nd December 2004 10:55 AM
Survey	audio_noob	Multi-Way	2	11th September 2003 08:02 PM

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