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Re: [Amps] Modifying Acom 1000 for a different tube

To: "Amplifier Mailing List" <amps@contesting.com>
Subject: Re: [Amps] Modifying Acom 1000 for a different tube
From: "Val" <val@vip.bg>
Date: Sat, 12 Jan 2013 19:09:35 +0200
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Krish,

There are still plenty of GU-74Bs around. Yes, the price is higher than
before, but it's still cheaper than 3CX800A. I see no cheaper or more
popular tube that could be easy transplanted there.

Actually it's done by the manufacturer - ACOM 1500 is same as 1000, but uses
4CX1000A.

If GU-74B scares you, the best move is selling the 1000 and buying 1500.

73, Val LZ1VB




With the price of the GU-74b's going up and the supply shrinking and is almost turning out to become
yet another 3cx800, i have the following questions

a) What would be a good tube to replace the 4cx800/GU-74b in an Acom 1000?
b) Minimal retrofit/gut down work
c) Assuming the retrofit would be compatible to let Acom put out a new firmware

I guess selling retrofit kits would ensure
a) Acom generates some revenue or is a parallel value chain
b)Builds confidence among its customers
c)Keeps the resale price of the Acom's stable over time.

Any thoughts?
73s
krish
w4vku

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