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Old 18th December 2004, 05:22 PM   #1
amt is offline amt  United States
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Default 6ar5??

I just aquired another Akai RTR and assumed it had the same amp in it as the last one I got (really a Roberts). Rather than a 6BM8, this one uses 6AR5s. I cant find much on them as to their fidelity, and the trannie puts out 250V, which I think is too low for a 6BM8. The OPT look like the same 5K as on the others.

Is this a decent tube? They are both shot so should I just use a different tube that will use 250V and if so, which one (6L6 maybe) Both the power/output trannies are in mint shape.

thanks amt
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Old 18th December 2004, 10:48 PM   #2
GeirW is offline GeirW  Norway
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Gday.

Here is the RCA datasheet
for the 6AR5, not mutch though.

http://www.mif.pg.gda.pl/homepages/f...049/6/6AR5.pdf
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Old 19th December 2004, 12:00 PM   #3
mcs is offline mcs  Denmark
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250V is fine for a 6BM8 amp. Other possible tubes could be the EL84/6BQ5 or 6V6/6AQ5.

I don't know anything about the 6AR5.

Best regards,

Mikkel C. Simonsen
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Old 19th December 2004, 03:09 PM   #4
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6AR5 is a 7 pin pentode, equivalent to octal 6K6. 6AQ5 is a much easier to find replacement, though its pinout is slightly different.
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Old 23rd December 2004, 07:55 PM   #5
amt is offline amt  United States
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Thanks for the responses. I re-read the 6bm8 specs and see now that there is a range of voltage operation which also varies depending on the operation mode. Im still pretty green as far as tubes go so nothing seems to be obvious.

amt
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