JEI V30 amp JEI V30 amp - diyAudio
Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Instruments and Amps Everything that makes music, Especially including instrument amps.

JEI V30 amp
JEI V30 amp
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
Thread Tools Search this Thread
Old 22nd November 2011, 03:05 AM   #1
johnston maxwell is offline johnston maxwell  Australia
diyAudio Member
Join Date: Nov 2011
Location: Brisbane
Default JEI V30 amp

G'day from Brisbane.

I've had a Jennings electronic industries V30 amp for some years and def not working.It was made by the short lived successor to Vox;a company started by Tom Jennings in the early seventies i think.Its a bit Vox like in that it has 4 x El84 but with reverb.All PCB construction with power supply,power valves and preamp valves on PCB.

I've decided to restore this thing and started testing to see what was underpar and so forth.

The power supply is puzzling me a bit.Its looks like a normal bridge rectifier capacitor/resister configuration however the B+ tested at the first cap was about 620v with no load.

On looking at the transformer again i'm beginning to think that this was a replacement and not rated correctly.

I remember that when i got this thing there was a series string of five 1K 10w resistors on the B+ line.Could this have been used to attempt to lower the B+ in which case i'll need a new properly rated power transformer before i make any further inroads here.

These are the only photos i can find online at present.Seems to be a pretty rare piece.

Thanks to anyone who helps here.

  Reply With Quote


JEI V30 ampHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS- Twisted Pear Buffalo 32S Board & System New & Unused secretriches Swap Meet 1 10th August 2009 02:17 PM
Modify & build out (2) Western Electric 300B / 2A3 Hammond monoblock amps & UTC LS-5 quality sound Tubes / Valves 0 9th May 2009 03:59 PM
Krell KSA 80 bias & dc offset check & adjust procedure Clouseaupte Solid State 3 9th August 2007 09:39 AM
DIY-AMP <ZAS> Low THD & IM high bandwith murphy Solid State 18 30th December 2005 10:28 AM

New To Site? Need Help?

All times are GMT. The time now is 01:00 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio