musical angel modified marantz 7 preamp schematics - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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 May 2006, 09:11 PM   #1
rchung is offline rchung  United States
diyAudio Member
 
Join Date: Mar 2004
Location: carlsbad, CA
Default musical angel modified marantz 7 preamp schematics

Hi All,

Recently, one channel of my relatively new modified marantz M7 preamp broke. I wondered if anyone has a schematic on this amp made by musical angel, which was frequently listed in Ebay. I have a jpeg which is very hard to read and I could not get the supplier to put up a better one.

Any suggestion on modding this amp for better performance while I am repairing it.

It started out very static-ky and then no more sound, just some hum. on the left channel.

Any help is appreciated.

RC
Attached Images
File Type: jpeg 70_1.jpeg (14.1 KB, 458 views)
  Reply With Quote
Old 17th May 2006, 12:58 AM   #2
diyAudio Member
 
Join Date: Nov 2002
Is there a chance that you could draw out the schematic and list the tubes ? I can't make out the schematic you posted.
  Reply With Quote
Old 17th May 2006, 01:08 AM   #3
rchung is offline rchung  United States
diyAudio Member
 
Join Date: Mar 2004
Location: carlsbad, CA
Default jpeg schematics

Unfortunately, that is all they gave me on the ebay listing. I know the tube should be 12AX7 and the rectifier tube should be the standard type. I would try to trace that out when I have time. it would be at least a couple days before I can find time to get to it.

I found this one from a website and I wondered if it is similar.
Attached Files
File Type: pdf marantz 7.pdf (23.2 KB, 286 views)
  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
Musical Fidelity x10d schematics here JDowland Digital Source 9 29th March 2013 06:02 AM
Looking for Musical FIdelity A3.2 CD Schematics PierreG Digital Source 3 11th December 2012 11:46 PM
Musical fidelity A2 schematics jmmartins Solid State 16 9th February 2010 12:25 AM
Musical Fidelity A3.2cr Schematics Alexandru Solid State 1 26th September 2008 01:40 AM
Musical Fidelity Schematics? Sampsa Solid State 1 22nd June 2006 02:59 PM


New To Site? Need Help?

All times are GMT. The time now is 10:39 PM.


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