RE: Si would like to know truthfully how the interstage kits for the parallel 2A3 and 300B differ - RC Daniel - ANK AudioKits Forum

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RE: Si would like to know truthfully how the interstage kits for the parallel 2A3 and 300B differ

In Reply to: RE: Si would like to know truthfully how the interstage kits for the parallel 2A3 and 300B differ posted by GTCharlie on May 4, 2010 at 03:13:29:

Hi GT
I am very late to this thread, but it may get looked at...
IIRC, the 2A3 has the (slightly) higher Miller capacitance, thereby necessitating greater current drive. The 300B has greater voltage drive/swing requirements to push it to full power, but is roughly the same as the 2A3 re gain/out put for a given input voltage and operating point & load. So, for a given output, the 2A3 appears to be slightly more difficult to drive; the 300B is capable of greater power, but requires an increased amount of voltage swing.
Also, IIRC, a DHT starts to draw grid current as it approaches full output; therefore in a common system, the 2A3 will be making greater demands of the driver earlier than a 300B.
So, the 300B may be more difficult to drive to FULL POWER - all things considered - but may be easier to drive than a 2A3 in some systems (eg. where a 2A3 is being asked to produce next-to-maximum RMS output).
It has been some time since I have actively thought about this stuff - I could be totally off-track.
[Edit:
Just realised how old this thread is; I do not expect a reply or follow-up to my post]
Cheers
"In the beginner's mind there are many possibilities, in the expert's mind there are few." Shunryo Suzuki

Edits: 01/03/11

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Follow Ups Full Thread

Topic - How can the interstage drive either 300Bs or 2A3s without any modifications? - Frihed89 16:11:46 04/30/10 (7)

RE: How can the interstage drive either 300Bs or 2A3s without any modifications? - Acoustic-Dimension 03:17:17 05/16/10 (0)

RE: How can the interstage drive either 300Bs or 2A3s without any modifications? - GTCharlie 01:34:05 05/01/10 (5)

Yes, but...the advertising doesn't exactly say that. Nt - Frihed89 23:26:31 05/02/10 (4)

Si would like to know truthfully how the interstage kits for the parallel 2A3 and 300B differ - Frihed89 23:27:47 05/02/10 (3)

RE: Si would like to know truthfully how the interstage kits for the parallel 2A3 and 300B differ - GTCharlie 03:13:29 05/04/10 (2)

RE: Si would like to know truthfully how the interstage kits for the parallel 2A3 and 300B differ - RC Daniel 20:56:14 01/02/11 (1)

Thanks - Frihed89 08:41:32 02/18/11 (0)

Follow Ups

RE: Si would like to know truthfully how the interstage kits for the parallel 2A3 and 300B differ - RC Daniel 20:56:14 01/02/11 (1)

Thanks - Frihed89 08:41:32 02/18/11 (0)

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