Vintage Asylum

RE: Ampex A423 The Longest Restoration

24.27.41.140

Triode_Kingdom

In Reply to: RE: Ampex A423 The Longest Restoration posted by Iain42 on December 31, 2023 at 18:51:55

That's really a high-end product, must have been very expensive in its day. Beautiful 6V6 amplifiers!

Follow Ups:

RE: Ampex A423 Console The Longest Restoration - Iain42 19:29:44 01/01/24 (3)
It was $1450 in today $4 $13000.

The amplifiers are now not buzzzzing. The preamp is a cluster and will not pass a signal to save its soul. If I use the inputs on the amps directly it sounds quite good.

Has anyone seen a schematic for this little preamp section before the 403 came out????

High sensitivity, wide dynamic range, low distortion, and smooth frequency response. Pwk

http://www.itishifi.com
- RE: Ampex A423 Console The Longest Restoration - Iain42 19:37:34 01/02/24 (2)
  This thing is weirder than slippers on snakes. The signal will not pass until you put thru and rec cables to the RTR preamp. The output cables must go from RTR to each amplifier. The weird thing is the RTR does not have to be on for this to work. It is now passing a signal... Now to rebuild the Tuner which works on AM but not FM. The RTR is going to need new belts and some motor work...
  
  High sensitivity, wide dynamic range, low distortion, and smooth frequency response. Pwk
  
  http://www.itishifi.com
  - RE: Ampex A423 Console The Longest Restoration - DanK tubes 15:31:47 01/07/24 (1)
    Cool project. I rebuilt an Ampex console ~20 years ago. Mine was from 1959. Wish I hadn't got rid of it.
    Here's a copy of the pre-amp schematic that I used.
    cheers
    - RE: Ampex A423 Console The Longest Restoration - Iain42 21:23:32 01/08/24 (0)
      Dan you had the console with the proper preamp mine had some weird little box that was more dual mono than true stereo. It took us ages to work it out..
      High sensitivity, wide dynamic range, low distortion, and smooth frequency response. Pwk
      
      http://www.itishifi.com

Post a Followup:

FAQ

Post a Message!

Forgot Password?

Moniker (Username):
Password (Optional):
	Remember my Moniker & Password (What's this?) Eat Me
E-Mail (Optional):
Subject:

Message:	(Posts are subject to Content Rules)

Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:	Automagically notify you when someone responds.

To view your new posting or follow-up, click on the RELOAD or REFRESH button on your browser.

This post is made possible by the generous support of people like you and our sponsors:

VH Audio