|
Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
|
|
Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
In Reply to: Quatre DG-250C schematic or parts list needed posted by Alex on February 24, 2000 at 10:45:46:
A transistor that frequently blew out on my Quatres (and I believe a problem with the breed)was a MDS-60. It was not a TO-220 case however. That transistor was always unreliable and there are more robust substitutes available.What is the designator for the transistor on the silk screen on the PCB? Is it Q10? I forgot what I replaced these with, but dig thorugh my old notes if you check on the label for that transistor. If it's Q10, there should also be a TO-92 case transistor (MPSA93) right next to it if I remember right.
Also, a nice mod for those amps is to replace the quasi-complementary output stage with a full complementary output and more modern transistors. It's not too difficult and I could give you details if you;re interested.
Good luck -- I was very fond of my Quatres. Unfortunately all that remain are the cases, heat sinks, and the transformers.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Re: Quatre DG-250C schematic or parts list needed - Phil 20:07:47 02/24/00 (1)
- i guess i am going to sell my quatre - alex 06:13:15 03/08/00 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
