Quote Originally Posted by N8YX View Post
I'm thinking about revisiting a design I played around with years ago: 2x 4X150A or 4CX250B in push-pull, running either Class A or AB as an audio amplifier.

So I'm going to need an output transformer which is rated for 3KV+ breakdown on its primary winding, and I'm probably going to run 1800-2100v on the anodes of the tubes. Screen grid voltage and balance will be done dynamically by a separate circuit so I won't need a tap for those.

Secondary impedances of 4/8/16 ohms.

Total power output of the envisioned contraption will be on the order of 2KW (1KW each pair/channel); by going with fewer tubes and higher plate impedance I ought to be able to keep the THD figures pretty low.

Where can I source such a beast? Hammond makes them rated to 300w and 1KV, but this setup requires a stouter configuration.
Maybe Marv can help......


images.jpgOh goody! My illudium Q-36 explosive space modulator