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

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

834P phono stage mains change
834P phono stage mains change
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 12th January 2018, 08:33 PM   #1
Milkduds is offline Milkduds  United States
diyAudio Member
 
Join Date: Oct 2004
Location: Southeast US
Default 834P phono stage mains change

Does anyone know what it takes to convert one of the original Tim P. 834P phono stages from 240 to 120 volts? I have access to one from the UK that has the info below on the back of the phono stage but I don't see a switch. Also, the manual says the unit has been "....set internally for 120/240 volts." This has me confused.

Power: 100-120V
200-240V
  Reply With Quote
Old 12th January 2018, 08:37 PM   #2
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
834P phono stage mains change
internally

take it , in meantime contact EAR for tips

in case they ignore you , when it arrives open it and post pictures
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 12th January 2018, 08:56 PM   #3
DiyGazza is offline DiyGazza  United Kingdom
diyAudio Member
 
Join Date: Nov 2009
Location: Kent, England
As for "set to internally" It could be something as simple as moving a wire link for 120v to 240v operation.

You could also consider using a mains step up transformer.

Or as already suggested, contact the seller to see if they can set it for 120v operation before shipping.
  Reply With Quote
Old 13th January 2018, 06:48 AM   #4
coolmaster is offline coolmaster
diyAudio Member
 
Join Date: Jul 2005
Location: MY
Hello all..
Luckily I have this picture from my archive of various work done in the past. The mains transformer is indeed a double primary winding that can wired for 240V or 120VAC. I reckon anyone can flip open the cover and see if its indeed 4 wires at the primary. Here is the picture of the guts. The bunch of 4 wires (Dark blue, Purple, Grey and Brown) Purple and Grey is tied for 240V operation for use in my region. You can DIY it or have someone competent to sort it out for 120V input. Good Luck!
Attached Images
File Type: jpg IMG-20160131-WA0020.jpg (241.1 KB, 122 views)
  Reply With Quote
Old 22nd January 2018, 11:57 PM   #5
Milkduds is offline Milkduds  United States
diyAudio Member
 
Join Date: Oct 2004
Location: Southeast US
Thanks to all and especially coolmaster for the picture. My 834P came in today and it has the exact same PT. The primary has 2 windings. I think what I need to do is clip the gray and purple wires that connect the windings in series for 220vac and then resplice as needed to connect the 2 primary windings in parallel for 120 volts. This should be easy enough!

Jim
  Reply With Quote

Reply


834P phono stage mains changeHide 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
Mains frequency change asturias Power Supplies 13 9th November 2009 10:48 PM
Need to change phono gain on Rowland phono module Mikelo Solid State 0 4th October 2009 01:43 AM
Change in frequency mains Raka Analog Line Level 49 17th January 2006 04:59 PM
Should I replace Scott 222C phono stage with Claret phono stage? Bing Yang Analogue Source 0 22nd August 2005 06:41 AM
Phono stage and caps - change? Zombie Solid State 50 31st August 2003 09:43 PM


New To Site? Need Help?

All times are GMT. The time now is 12:40 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki