6BL7 replecement

esh0 · 30th December 2008, 01:47 PM

Hi all!

Can you tell me if it is possible to change 6BL7 tube in application shown below to any other tube? I want to cut costs of this amp, so i though of changing 6SL7 with 6N9S (rus 6H9C) and 6BL7 with... Yeah, with what? Maybe 6N8S should be okey with some changes? Both them have similiar amplification factor.

I know that good replecement tubes for 6BL7 are ECC99, CV5039, E182CC, but they costs same as 6BL7 and are even harder to buy in Poland :/

There was also topic about changing 6BL7 and people said that it can be substituted be - 6s4a, 6ew7, 7044, 6gf7 - impossible to buy in Poland :/

Thanks for all replies.

Schematic: http://www.jogis-roehrenbude.de/Lese...Neu/PP-Neu.gif

Fuling · 30th December 2008, 01:57 PM

If 6BL7 is similar to ECC99 perhaps you can take a look at the russian 6N6P?

esh0 · 30th December 2008, 02:00 PM

But 6N6P can only take 120V at anode, am i right?

aroS3 · 30th December 2008, 02:04 PM

Quote:

Originally posted by esh0
But 6N6P can only take 120V at anode, am i right?

No, Va=300V

esh0 · 30th December 2008, 02:18 PM

Ok, so i can try it

30th December 2008, 01:47 PM	#1
esh0 diyAudio Member Join Date: Sep 2004 Location: Poland	6BL7 replecement Hi all! Can you tell me if it is possible to change 6BL7 tube in application shown below to any other tube? I want to cut costs of this amp, so i though of changing 6SL7 with 6N9S (rus 6H9C) and 6BL7 with... Yeah, with what? Maybe 6N8S should be okey with some changes? Both them have similiar amplification factor. I know that good replecement tubes for 6BL7 are ECC99, CV5039, E182CC, but they costs same as 6BL7 and are even harder to buy in Poland :/ There was also topic about changing 6BL7 and people said that it can be substituted be - 6s4a, 6ew7, 7044, 6gf7 - impossible to buy in Poland :/ Thanks for all replies. Schematic: http://www.jogis-roehrenbude.de/Lese...Neu/PP-Neu.gif

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30th December 2008, 01:57 PM	#2
Fuling diyAudio Member Join Date: Aug 2001 Location: Sweden (Mora)	If 6BL7 is similar to ECC99 perhaps you can take a look at the russian 6N6P?

30th December 2008, 02:00 PM	#3
esh0 diyAudio Member Join Date: Sep 2004 Location: Poland	But 6N6P can only take 120V at anode, am i right?

30th December 2008, 02:18 PM	#5
esh0 diyAudio Member Join Date: Sep 2004 Location: Poland	Ok, so i can try it

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