Using James JS-6123HS with EL84 SE is overkilled?

nina · 18th May 2009, 04:38 PM

Hi,

I look for a best affordable OPT for EL84 SE (Triode, or run at UL40%), and someone offer me JS-6123HS at ~ US$200.

Look at the spec, this OPT is for 2A3 and 300B. Any one ever use this OPT model with EL84 SE? Will this OPT be overkilled (too good to be used) for EL84 SE?

http://tctubes.com/james-transformers-JS-6123HS.aspx

Thanks.

DougL · 18th May 2009, 04:59 PM

Typically, a transformer designed for a 2A3 or 300B will not be usable for an EL84, which has a higher Rp and is best with more primary inductance than a 2A3.

Looking at the link you provided, there are several possible primary options from 2.5K to 5K. the 6BQ5 aka EL84 is listed as a tube this transformer was designed to accommodate.

HTH

Doug

nina · 18th May 2009, 05:04 PM

Thanks Doug.

I thought that all 3.5K (or 5K) are the same as long as the max current is higher than the running one. Are they?

18th May 2009, 04:38 PM	#1
nina diyAudio Member Join Date: Apr 2005 Location: Earth	Using James JS-6123HS with EL84 SE is overkilled? Hi, I look for a best affordable OPT for EL84 SE (Triode, or run at UL40%), and someone offer me JS-6123HS at ~ US$200. Look at the spec, this OPT is for 2A3 and 300B. Any one ever use this OPT model with EL84 SE? Will this OPT be overkilled (too good to be used) for EL84 SE? http://tctubes.com/james-transformers-JS-6123HS.aspx Thanks.

18th May 2009, 04:59 PM	#2
DougL diyAudio Member Join Date: Feb 2004 Location: Wheaton IL. Blog Entries: 28	Typically, a transformer designed for a 2A3 or 300B will not be usable for an EL84, which has a higher Rp and is best with more primary inductance than a 2A3. Looking at the link you provided, there are several possible primary options from 2.5K to 5K. the 6BQ5 aka EL84 is listed as a tube this transformer was designed to accommodate. HTH Doug __________________ Scienta sine ars nihil est - Science without Art is nothing. (Implies the converse as well) Mater tua criceta fuit, et pater tuo redoluit bacarum sambucus

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18th May 2009, 05:04 PM	#3
nina diyAudio Member Join Date: Apr 2005 Location: Earth	Thanks Doug. I thought that all 3.5K (or 5K) are the same as long as the max current is higher than the running one. Are they?