Warning About The Singlepower Extreme - Owners Please Read - Page 25

This is a very useful information and I would like to thank N_maher for being a good citizen. My friend owned Singlepower Extreme and as of now, it is still doing okay, so far. Maybe, there was just some singlepower that was not made coherently. Or maybe, the owner of any amps should be always aware and informative regarding their amps.

I had my tech complete the transformer swap and check over the rest of the amp. It received a clean bill of health. I went with the Electra Print transformer and I love the way it looks sitting on an angle parallel to the tubes and exposed for the entire world to see. I allowed the amp to burn in for the last month. The improvement in sound quality was very evident from its former condition. It is dead silent and neutral; all I hear now is the music as it should be. I will definitely be keeping this amp for a long time, now that the sound quality has improved. I was hesitant to change out the transformer, as the sound quality was good as far as I could tell. However, when I cracked open the case and removed the transformer cover I found a transformer that was beginning to fry and on its way to an early death. Therefore, anyone who has hesitated to make the repairs to their own amp thinking there is nothing wrong, you will not be disappointed once you hear the improvement in SQ and know that your SP Extreme is now safe to use. Thank you to all of those who provided input on the repairs for their own SP Extreme.  Thank you to n_maher, kevin gilmore, Bolder, mourip and Skylab for your help enabling me to repair mine. Your advice helped me make the correct decisions when deciding how to turn my Singlepower Extreme into a Head-Fi Extreme.

Photos of the modified SP Extreme now a Head-Fi Extreme

 

 

 

 

Nice looking unit you have there Webrider, enjoy it.

Thanks, I am enjoying it every chance I get. Its definitely worth the effort and cost to repair and upgrade these amps.

These threads should be stickied in the full amp section again.

Help needed. Does anyone know of other sources for a transformer cover on my stock Extreme?

The link above is in China, and I would like to deal with a U.S. company, if possible.

I will be putting in the edcor transformer mentioned in this thread.

Any help is much appreciated.

 

Thanks,

John D.
 

 

You can get a nice one from ElectraPrint.

After being in contact with Jack about purchasing one his transformers, and being told he no longer makes and sells them,

I'm not too sure he would still be selling covers for them. He was my first choice for a transformer. His website states effective

immediately we no longer build power transformers and power chokes. He told me that he can't afford the price of copper, said

the Chinese are driving up the price.
 

 

Wow.  Bummer. Did not know that. Sorry.

Some of these might work. 

Edcor might have something too. 

http://www.edcorusa.com/Products.aspx

 

edit: I see you are already working with them on the transformer, and it looks like they only provide unpainted steel end bells for DIY. 

Edited by liamstrain - 2/5/12 at 11:45am

Yes, I already have the edcor transformer (painted blue bells), it took about 3 weeks to get after placing the order.

 

Thanks for the link, went ahead and ordered from them. Attached are some photos of before and after my amp was fixed.

 

 

This amp sounds better now than it ever has. !!!!!!!!!!!!!!!!!!!!!

With the new transformer you might want to adjust the value of the resistor to set the tubes at 6.3 VDC

after it has been on for 10 minutes.