[Amps] Can I cool too much the tubes?

[Carl]

They didnt sell very many either.

Carl
KM1H


--- On Mon, 8/16/10, Colin Lamb <k7fm at teleport.com> wrote:

From: Colin Lamb <k7fm at teleport.com>
Subject: Re: [Amps] Can I cool too much the tubes?
To: "Rudy Bakalov" <r_bakalov at yahoo.com>, amps at contesting.com
Date: Monday, August 16, 2010, 1:40 PM

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

Assume amp designed with 250 cfm fan and going to review to marketing, this 
might be the conversation:

Marketing: "This thing is too loud, no one will buy it."

Engineering: "250 cfm is what is necessary during a contest, to adequately 
cool the tube."

Marketing: "No one will buy this thing, it sounds like a vacuum cleaner."

Engineering: "I can cool it with 90 cfm, but then it will overheat at 
altitude, or during hot weather, or when heavily used."

Marketing: "Drop it to 90, we have to sell it."

Engineering: "No way. I am going to management and tell them you are 
screwing around with the amp. You are no engineer."

A week later:

Marketing: "Next time just do as we tell you. You darn engineers think you 
know everything. If we listened to you and your paranoia, we would go 
broke."

Amp goes out the door with 90 cfm.

This is a hypothetical story, of course. It never is like that in the real 
world.

73, Colin K7FM


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