Genalex repro KT88s

bobgroger · 30th September 2008, 03:09 AM

I noticed that Guitar Center is selling these and has them matched by "Soft", "Medium", or "Hard". Does this have any meaning for the hi-fi market? Seems we would want the least distorting tube...

http://www.guitarcenter.com/Genalex-...83-i1372887.gc

athos56 · 30th September 2008, 05:54 AM

Maybe their selling eggs...sorry I couldn't help myself

Salas · 30th September 2008, 06:08 AM

Don't know what these guys do in guitar amp cult, but those reissues are very compact in production control so to exhibit so big differences in clip region, to ear test and collect in groups is rather copious to say the least. Maybe their traditional standard policy was to group tubes in such a way and they offer it on all types no matter what. In between different makes of same type there are different max clip signatures, but in between same make same type, very difficult to group seriously. Especially when generally made good in factory.

duderduderini · 30th September 2008, 12:42 PM

Hey
I think the nomenclature they refer to may have something to do with the bias point of the tube. Tubes with a lower bias point will have less headroom and thus clip earlier and the opposite for a higher bias point.
The tube depot has a link which explains the bias point.
I hope this helps
http://site.tubedepot.com/BiasPointWave.swf
Nick

30th September 2008, 03:09 AM	#1
bobgroger diyAudio Member Join Date: Dec 2005 Location: Seattle, WA, USA	Genalex repro KT88s I noticed that Guitar Center is selling these and has them matched by "Soft", "Medium", or "Hard". Does this have any meaning for the hi-fi market? Seems we would want the least distorting tube... http://www.guitarcenter.com/Genalex-...83-i1372887.gc __________________ I don't need to spend money on my system for something only you can hear....

30th September 2008, 12:42 PM	#4
duderduderini diyAudio Member Join Date: Mar 2004 Location: Albury NSW Australia	Check this link out Hey I think the nomenclature they refer to may have something to do with the bias point of the tube. Tubes with a lower bias point will have less headroom and thus clip earlier and the opposite for a higher bias point. The tube depot has a link which explains the bias point. I hope this helps http://site.tubedepot.com/BiasPointWave.swf Nick __________________ "Better to say nothing and keep them guessing than to speak and remove all doubt."

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30th September 2008, 05:54 AM	#2
athos56 diyAudio Member Join Date: May 2006 Location: Yakima, Washington	Maybe their selling eggs...sorry I couldn't help myself

30th September 2008, 06:08 AM	#3
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	Don't know what these guys do in guitar amp cult, but those reissues are very compact in production control so to exhibit so big differences in clip region, to ear test and collect in groups is rather copious to say the least. Maybe their traditional standard policy was to group tubes in such a way and they offer it on all types no matter what. In between different makes of same type there are different max clip signatures, but in between same make same type, very difficult to group seriously. Especially when generally made good in factory.

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