Changing Voltage Req from 110V, 60Hz to 220-240V, 50Hz? - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Pass Labs This forum is dedicated to Pass Labs discussion.

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 2nd September 2005, 07:20 AM   #1
diyAudio Member
Join Date: Sep 2005
Default Changing Voltage Req from 110V, 60Hz to 220-240V, 50Hz?

Hi all,

Just want to check is it possible to convert the voltage requirement of the Pass Labs X2.5 Preamp from 110V, 60Hz to 220-240V, 50Hz?

Could it be done easily by the owner?

Many Thanks!

  Reply With Quote
Old 2nd September 2005, 06:13 PM   #2
The one and only
Nelson Pass's Avatar
Join Date: Mar 2001
All Pass products made before this year have dual primaries,
which can be re-tapped by any competent technician.

Generally the PC board is marked clearly.

More recently power amplifiers have begun using single
primary transformers, so this will not always apply.
  Reply With Quote
Old 9th September 2005, 05:11 PM   #3
diyAudio Member
Join Date: Sep 2005

this seems to be exactly what I was looking for! I fell in love with an X 250 (which a friend bought), and wanted to buy a used X 350 from the USA, but hesitated because of the voltage change.

So, do I understand this right - you have to re-wire the PSU trannies in series to change the voltage to 230 VAC, and everything is well?

And is this what the techs at Pass Labs do for the European units?

Thanks in advance
  Reply With Quote
Old 13th June 2010, 03:09 AM   #4
im1663 is offline im1663  Hong Kong
diyAudio Member
Join Date: Jun 2004
Location: Hong Kong
Are all Pass products work on both 50/60Hz. I know, all recent products of M... and K... have a monitoring circuit on the a.c frequency and will "block" it to power up if frequency not macth.
  Reply With Quote


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
Pass X1 Pre:Voltage change from 110V to 220-240V rc5al Pass Labs 0 24th May 2009 08:45 AM
Converting 50Hz to 60Hz??? Antripodean Parts 26 18th April 2009 07:39 AM
Linn 50hz to 60hz? protos Analogue Source 3 24th June 2005 07:35 PM
50hz on 60hz lawbadman Power Supplies 10 21st April 2005 01:26 AM
Converting a 110V 60Hz Garrard 301 to 220V 50Hz icefox Analogue Source 3 10th April 2004 05:15 PM

New To Site? Need Help?

All times are GMT. The time now is 05:47 AM.

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

Content Relevant URLs by vBSEO 3.3.2