Home » Audio » Pro Sound » I want to build a Small Class A tube amp .
Re: I want to build a Small Class A tube amp . [message #26956 is a reply to message #26952] Mon, 20 December 2004 22:24 Go to previous messageGo to previous message
Thermionic is currently offline  Thermionic
Messages: 208
Registered: May 2009
Master
Say Wayne, I'll post a pic of a hi-fi amp I'm working on for a customer when it's finished. Just a cheesy little cheapo beater EL84 PP amp for a second bedroom system, nothing special.

I'll be building some of "the good stuff" after that, including a copy of my EL34 PP design. It uses a battery biased 6C45 per channel, choke-loaded parafeed through a silver foil/paper in oil cap into a mu-metal phase inverter transformer. The cathode biased PP pair of EL34s are switchable between triode and ultralinear, feeding the speaks through a Plitron toroidal OPT.

The HEXFRED rectified main power supply is a stiff, choke input monster with very low impedance. The preamp tubes have a separate tube rctified supply with motor run oil caps. I also use separate filament trannies. It's a real killer diller, and a real backbreaker at nearly 60 pounds too! Maybe I'll show up at one of the shindigs in Tulsa with one someday!

Thermionic

 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: concert series JBLs 8 pin connection
Next Topic: Marshall modification
Goto Forum:
  


Current Time: Sat Nov 30 19:28:07 CST 2024

Sponsoring Organizations

DIY Audio Projects
DIY Audio Projects
OddWatt Audio
OddWatt Audio
Pi Speakers
Pi Speakers
Prosound Shootout
Prosound Shootout
Miller Audio
Miller Audio
Tubes For Amps
TubesForAmps.com

Lone Star Audiofest