Free Shipping on All Orders 1-866-764-1801

Vist our Online Store
+ Reply to Thread
Results 1 to 3 of 3
  1. #1

    Member Sales Rating: (0)

    Join Date
    Nov 2011
    Posts
    1

    Default Polk Audio PSW505 amp power supply mod? (120->220V mains)

    I saw a god deal on a PSW505 powered sub and picked it up with the intention of using it in a region with 220v/50hz mains. I saw the 250V listed on the back and mistook it for the maximum input voltage, but it's referring to the properly rated fuse value. See this photo: http://a248.e.akamai.net/pix.crutchf...7psw505-b.jpeg

    I called customer service, and, impressively, I got someone on the line who actually knew a thing or two! He confirmed that the amp has a switching power supply and confirmed for me that the US version won't take 220V. He also said that the schematic is unavailable.

    I haven't pulled the amp yet, but maybe somebody here can tell me if the 120V model is easily convertible to take 220V. Maybe I can pull a couple of diodes in the input stage rectifier and make it a half wave rectifier? Maybe its already configurable and I can just change a few jumpers around?

    I'm trying to avoid running this thing off a step down transformer as it seems a little silly since its got a switching power supply.

  2. #2

    Member Sales Rating: (0)

    Join Date
    Jul 2013
    Posts
    2

    Default

    Quote Originally Posted by eeinator View Post
    Maybe its already configurable and I can just change a few jumpers around?
    I'm trying to avoid running this thing off a step down transformer as it seems a little silly since its got a switching power supply.
    I got mislead by a Q&A in Amazon where someone told that this works in a 220v environment. The fuse blew (exploded) instantly when I turned the switch ON. Did you find any solution for this? I am not a big fan of step down transformers.

  3. #3

    Member Sales Rating: (0)

    Join Date
    Dec 2012
    Location
    WDSM, IA
    Posts
    2,006

    Default

    Unfortunately, a step down transformer will be your only option without major internal modifications.
    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
    I may have an addiction... RTA-15TL, SDA 2, LSi25, LSi15, LSi9, LSi7, LSiCx2, LSiFX, LS/FX, RT/FX, DSW MP2000...and that's just the Polks...

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

     

Similar Threads

  1. Need Help converting PSW505 sub 110V to 220V
    By zvika in forum DIY, Mods & Tweaks
    Replies: 3
    Last Post: 07-29-2013, 10:09 AM
  2. For Sale Audio Alchemy DLC (Digital Line Controller) Line Level Pre-amp upgraded power supply
    By newrival in forum For Sale (FS) Classifieds
    Replies: 8
    Last Post: 01-05-2012, 11:30 PM
  3. FYI Used Polk SPS1 Power Supply SPS-1 105224
    By gdb in forum Speakers
    Replies: 2
    Last Post: 09-15-2010, 08:48 PM
  4. Where can I order foreign 220v power cord?
    By organ in forum The Clubhouse
    Replies: 1
    Last Post: 05-17-2006, 01:23 PM
  5. Test power Supply/Subwoofer getting power
    By lac000 in forum Troubleshooting
    Replies: 3
    Last Post: 12-28-2002, 11:00 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts