[Amps] Can I cool too much the tubes?

[Rudy Bakalov]

Experience trumps specs. The amp goes into standby mode after about 30 minutes running at full power, i.e. about 1200 W.  If I run it at around 400-500 W it is fine.

Rudy N2WQ
--- On Wed, 8/18/10, Bill, W6WRT <dezrat1242 at yahoo.com> wrote:

From: Bill, W6WRT <dezrat1242 at yahoo.com>
Subject: Re: [Amps] Can I cool too much the tubes?
To: amps at contesting.com
Date: Wednesday, August 18, 2010, 10:43 AM

ORIGINAL MESSAGE:

On Mon, 16 Aug 2010 10:40:41 -0700 (GMT-07:00), Colin Lamb
<k7fm at teleport.com> wrote:

>"I guess the fundamental question is why did Ten Tec select 90 CFM fan instead of 250 CFM."

REPLY:

May I ask what tube(s) get too hot with 90 CFM? According to Eimac, a
pair of 3-500Zs at 1500 watts output need only about 26 CFM. At 1500
watts output an 8877 needs only about 20 CFM.

Just curious. 

73, Bill W6WRT
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