MFA Luminescence--need schematic - 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 30th January 2005, 08:35 PM   #1
diyAudio Member
 
Join Date: Jan 2005
Location: Boston, MA
Default MFA Luminescence--need schematic

I am looking for a schematic for the MFA Luminescence, specifically, an earlier design than the one that is best known. I sorry, but I forget the model designation codes. I don't need the audio circuit schematic--just the one that depicts how the transformers are connected.

The best known Luminescence (as far as I know) is the one with dual power supply regulators. Mine has only one regulator, and two odd size filament transformers.

My particular question that I'm researching is the wiring of these filament transformers. Both (and the B+ supply transformer) seem to have dual primaries, and all have a brown wire that is connected to the other brown wires, separate from neutral. This separate lug seems to be 1.4 ohms off neutral.

Thanks. If you can explain this or have such a diagram, I'll contact you off list.
__________________
Trombone
  Reply With Quote
Old 31st January 2005, 12:49 AM   #2
KBK is offline KBK  Canada
diyAudio Member
 
Join Date: Dec 2003
Location: The Wilds Of Canada
I have some email communiaton from a guy who has three of them. he was selling one on ebay or audiogon, I forget. Anyway, we had a few discussions about the designs, etc. I believe he has schematics. If I remember! always the trick!.. I'll dig up these fairly recent emails at workand maybe put the gentleman in contact with you.

That is, if you have no luck or joy, here on the forum.
  Reply With Quote
Old 31st January 2005, 06:42 AM   #3
diyAudio Member
 
Join Date: Jan 2005
Location: Boston, MA
Thanks very much.
__________________
Trombone
  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
Looking for JBL schematic Fuzzymuff Car Audio 12 20th April 2009 08:07 PM
WTB: MFA Luminescence or MC Reference marknoir Swap Meet 2 6th August 2007 02:32 PM
Grounding MFA Luminescence trombone Tubes / Valves 36 6th January 2007 02:02 AM
So I done the schematic... Maples Solid State 2 18th April 2004 09:13 AM
Help With Schematic? CryingDragon Solid State 4 3rd January 2003 06:01 AM


New To Site? Need Help?

All times are GMT. The time now is 07:01 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