MFA MC Reference - 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 14th June 2002, 04:39 PM   #1
diyAudio Member
 
Join Date: Dec 2000
Location: Germany
Default MFA MC Reference

Hello Tube Gurus,
can anybody help with schematic and Parts list
for the MFA MC Reference.
Can offer a schematic of MFA Luminescence for that. Don`t ask if you havn´t the above.
Reinhard
  Reply With Quote
Old 28th June 2002, 07:06 AM   #2
KaLok is offline KaLok  Hong Kong
diyAudio Member
 
Join Date: Jun 2002
Location: Hong Kong
Hi, Reinhard
Pls check old issue Glass audio, it has this schematics (line amp only), it use 6DN7 and 6SN7(or 6SL7, I'm nor sure). It is a MFA Luminescence model A, it has 3 versions: A,B and C, they has a little bit not similar.
  Reply With Quote
Old 28th June 2002, 03:50 PM   #3
diyAudio Member
 
Join Date: Dec 2000
Location: Germany
Default MC Reference and Luminescence

Hello,

the luminescense is an Bruce Moore design using oktal tubes throughout. The MC reference uses miniature tubes and when my information is right, it is a design of Arn Rothcap.

I have the issue of GA with the line amp.

Thanks,
Reinhard
  Reply With Quote
Old 29th June 2002, 06:37 AM   #4
KaLok is offline KaLok  Hong Kong
diyAudio Member
 
Join Date: Jun 2002
Location: Hong Kong
The schematic may be model A, special for LP source, the different is the NF part.
  Reply With Quote
Old 23rd November 2003, 10:03 AM   #5
diyAudio Member
 
Join Date: Nov 2003
Location: paris
Cool MFA MC REFERENCE PREAMP

I have in my system this absolutely fantastic preamplifier !
and good news for you i have the complete documentation !
i can make you a copy and send by postal way if you want.

Probably you can help me ... i replaced the 6922 tube in preamp by others 6922 but ..... in the power supply box there is a big rectifier tube called 9330 from penta laboratories ! impossible to find it , so is it the good reference ? no informations in the documentation .... all schema for preamp box but no details about the last tube i would like to replace .....

and internet site from pentalaboratories.com don't react .....from France ! ( you could try from another location ?)

picard.jeanlouis@free.fr
  Reply With Quote
Old 25th November 2003, 12:54 AM   #6
KaLok is offline KaLok  Hong Kong
diyAudio Member
 
Join Date: Jun 2002
Location: Hong Kong
Maybe I check it in HK or asked some of my friend who know.
__________________
Terence
  Reply With Quote
Old 25th November 2003, 01:05 AM   #7
diyAudio Senior Member
 
fdegrove's Avatar
 
Join Date: Aug 2002
Location: Belgium
Hi,

Quote:
box there is a big rectifier tube called 9330 from penta laboratories !
5930 is more likely.

An aviation rectifier, I had a number of them because on paper it was just the best my engineers could find and wanted to toy with it...Very expensive tube.

Cheers,
__________________
Frank
  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
Paradigm Reference VS what kit ? Robertburchell Multi-Way 0 3rd January 2009 02:08 PM
KEF Reference 103 - parts or maybe whole wightie Swap Meet 0 25th September 2005 11:32 PM
Reference Sound - Reference IC's? amirmk Solid State 0 26th July 2005 07:49 PM
Kef Reference 203 Vuamp2 Multi-Way 2 23rd July 2005 12:43 AM
Any website reference for diy Audio Research REFERENCE amp and Manley Studio amp bmpa Tubes / Valves 4 19th April 2004 05:11 AM


New To Site? Need Help?

All times are GMT. The time now is 09:14 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