[sdiy] vacuum tubes!!!

[John L Marshall]

see below

audio applications? sure. what do you want to do?

a pair of 8417 will make a dandy audio amplifier. You just need a power 
transformer and an output transformer. No big deal :-)

Take care,
John

----- Original Message ----- 
From: "Michael Ruberto" <frankentron at hotmail.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Tuesday, June 14, 2005 4:12 PM
Subject: [sdiy] vacuum tubes!!!


> how bizarre, an aquaintance just dropped off a milk crate of electronic 
> parts for me. in the crate were some dual concentric 1 Meg pots with 
> switches, some DB25 female connectors, a technicians assortment of 
> electrolytic caps and.... dozens of vacuum tubes!! help me out here. I'm 
> not a tube guy so I don't know what I'm looking at. I can't tell if they 
> are new or used, my friend says there's both. here's some numbers:
>
> 6KM6 pentode horizontal deflection
> 6EN4 ??? 6GH8A triode & pentode
> 8417 Beam power amplifier, AB2 = 100W
> 12GN7A Sharp cutoff pentode
> 3A3C/3AW3/3B2 Flyback diode
> 6BS3A damper diode
> 6AQ5A/6HG5 Beam Power Pentode 5W
> 7247 Double Triode 6CB6A-6CF6 Sharp cutoff Pentode
> 6CW5/EL86 Power Pentode 7W
>
> Are these useful for audio apps? without a tester can I verify which are 
> still new and which are used?
>
> M. A. Ruberto
>
>