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PW47 13th March 2013 07:31 PM

tube substitute
 
isaw at ebay tube silvania 5bk7a as substitute for 6922 ? before i replace my 6922 in my counterpoint sa1000 . ilike to have info about it the use of it : as alternative . thanks pw

FullRangeMan 13th March 2013 08:06 PM

Some datasheet:
Results of tube search
No equivalents informed in this site.

PW47 13th March 2013 08:16 PM

TUBE 5BKA7A
 
THANKS . SOME EBAY SELLERS SELLING IT AS POOR MAN 6922 . 5BK7A AND 6BQ7A . TUBE ROLLING . MALANDROS . IAM NEW INTO TUBES .

tinitus 13th March 2013 08:22 PM

please, no need to use other than normal letters

:cop:
moderation post

DF96 13th March 2013 08:23 PM

Don't take your valve data from ebay sellers! They are notorious for assuming that same pinout means equivalent, and same date code means matched.

payloadde 13th March 2013 08:32 PM

compare datasheets:

6922:
http://frank.pocnet.net/sheets/128/e/E88CC.pdf

5BK7A:
http://frank.pocnet.net/sheets/127/5/5BQ7A.pdf

PW47 13th March 2013 08:48 PM

RSSSSS ! you alright

FullRangeMan 13th March 2013 08:51 PM

Nor the filament is similar, 5BK7 is a 5V heater, not 6V;

PW47 13th March 2013 10:34 PM

tubes
 
Quote:

Originally Posted by FullRangeMan (Post 3409459)
Nor the filament is similar, 5BK7 is a 5V heater, not 6V;

hey , idid compare the filaments they dont match , the volts diference could cause damage , and more heat . better stick up for the convencional . obrigado .

FullRangeMan 13th March 2013 11:52 PM

Quote:

Originally Posted by PW47 (Post 3409631)
hey , idid compare the filaments they dont match , the volts diference could cause damage , and more heat . better stick up for the convencional . obrigado .

Thanks, your portuguese is good. ;)
Cheers


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