[Amps] Modifying Acom 1000 for a different tube

Val val at vip.bg
Sat Jan 12 12:09:35 EST 2013


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

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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