Help 7189A Tubes!

Banditt · 2nd June 2011, 08:09 PM

Hi guys, I'm looking to purchase 2 matched pairs of NOS/GE 7189A tubes-(not 7189) to reurrect my old Pioneer SM83 amp. I'v tried most of the valve stores on the net with no luck. I'm from South Africa, can anyone help?

WildOne · 2nd June 2011, 08:53 PM

https://www.tubeworld.com/7189.htm

Banditt · 2nd June 2011, 09:09 PM

already checked out their site. They don't have any matched pairs except for a pair of Toshibas for $179. A bit steep for me. From what I've seen a matched pair of GE's & NOS normally go for around $100-$130. Thanks WildOne.

kevinkr · 2nd June 2011, 10:03 PM

Try the Russian made 6P14P-EV or ER - pretty close to equivalent, might need to make some adjustment to the bias.. (These are readily available on eBay) I prefer the ER, but it may be getting rare at this point. They're a good deal less expensive than the 7189 or 7189A and I've found usually work well in applications calling for either.

tubelab.com · 2nd June 2011, 11:24 PM

If the amp runs the screen grids at 330 volts or less, use JJ EL84's. I run them in Simple P-P's at 330 volts screen, 440 volts plate, 12+ watts dissipation and extract up to 30 watts from a pair.

Eli Duttman · 3rd June 2011, 02:13 AM

Banditt,

The 7189A has pretty much gone the way of the Dodo. AAMOF, NOS 7189s (no "A") are quite scarce. Kevin gave you good advice. The Russian 6П14П-ЕВ (6p14p-ev), AKA EL84M, is a true 7189 equivalent, with decent sonics and a favorable price. Rework the Pioneer amp O/P tube sockets to 7189 spec's and slightly lower the "idle" current.

Banditt · 3rd June 2011, 07:16 PM

Seriously considering taking Kevin's advice, besides I don't have much of a choice.
Thanks for the great advice guys, really appreciate it.

2nd June 2011, 08:09 PM	#1
Banditt diyAudio Member Join Date: Jun 2011	Help 7189A Tubes! Hi guys, I'm looking to purchase 2 matched pairs of NOS/GE 7189A tubes-(not 7189) to reurrect my old Pioneer SM83 amp. I'v tried most of the valve stores on the net with no luck. I'm from South Africa, can anyone help?

2nd June 2011, 10:03 PM	#4
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	Try the Russian made 6P14P-EV or ER - pretty close to equivalent, might need to make some adjustment to the bias.. (These are readily available on eBay) I prefer the ER, but it may be getting rare at this point. They're a good deal less expensive than the 7189 or 7189A and I've found usually work well in applications calling for either. __________________ www.kta-hifi.net

2nd June 2011, 11:24 PM	#5
tubelab.com diyAudio Member Join Date: Jul 2005 Location: South Florida	If the amp runs the screen grids at 330 volts or less, use JJ EL84's. I run them in Simple P-P's at 330 volts screen, 440 volts plate, 12+ watts dissipation and extract up to 30 watts from a pair. __________________ Too much power is almost enough! Turn it up till it explodes - then back up just a little.

3rd June 2011, 02:13 AM	#6
Eli Duttman diyAudio Member Join Date: Apr 2004 Location: Plainsboro, NJ	Banditt, The 7189A has pretty much gone the way of the Dodo. AAMOF, NOS 7189s (no "A") are quite scarce. Kevin gave you good advice. The Russian 6П14П-ЕВ (6p14p-ev), AKA EL84M, is a true 7189 equivalent, with decent sonics and a favorable price. Rework the Pioneer amp O/P tube sockets to 7189 spec's and slightly lower the "idle" current. __________________ Eli D.

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2nd June 2011, 08:53 PM	#2
WildOne diyAudio Member Join Date: May 2011 Location: Great NorthWest	https://www.tubeworld.com/7189.htm

2nd June 2011, 09:09 PM	#3
Banditt diyAudio Member Join Date: Jun 2011	already checked out their site. They don't have any matched pairs except for a pair of Toshibas for $179. A bit steep for me. From what I've seen a matched pair of GE's & NOS normally go for around $100-$130. Thanks WildOne.

3rd June 2011, 07:16 PM	#7
Banditt diyAudio Member Join Date: Jun 2011	Seriously considering taking Kevin's advice, besides I don't have much of a choice. Thanks for the great advice guys, really appreciate it.

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