AA-1800 - what to do? - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 16th October 2005, 11:44 PM   #1
amt is offline amt  United States
diyAudio Member
 
Join Date: Feb 2003
Location: oregon
Default AA-1800 - what to do?

Hi,

I just acquired a Heathkit aa-1800 that I had intended to use for its chassis only. After doing some research, I find that it is a Leach Superamp design, which is fairly well regarded. I had planned on using the chassis for a JLH but now wonder if I should try and revive it. It is missing the transformer(s) and a PCB of some kind. All the MJ15025s look original and the boards in good shape. The protection board is there and looks okay.

The question is what the missing board was and is it worth the $30 for a service manual to start checking it? And why two power cords?

thanks, amt
  Reply With Quote
Old 16th October 2005, 11:59 PM   #2
AJT is offline AJT  Philippines
diyAudio Moderator
 
AJT's Avatar
 
Join Date: May 2003
Location: Palatiw, Pasig City
hi,

if i am not mistaken, one power cord connects direct to the wall, the other to a switched outlet on a preamp, kind'a remote control if you will. i read the review in a radio electronics magazine many many years back.

can you post some pics?

maybe some member here have a set of schematics!

the power traffo is very heavy, but torroids make a nice substitute!
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Aa-1800 jfz69 Solid State 2 12th February 2008 06:23 PM


New To Site? Need Help?

All times are GMT. The time now is 09:15 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2