Whoops....

Whoops....

Posted by drlowmu (M) on April 28, 2013 at 23:33:58

In Reply to: RE: Agree ...... posted by Saturntube on April 23, 2013 at 08:47:52:

Jorge,

I didn't answer "how to parallel power transformers."

First of all, I had FOUR exactly-the-same Philips model number power transformers from circa 1986 CD players. I just paralleled with TWO Kimber Kable TCSS runs, the terminals of the trannies, one to the other, on both the primary and secondary sides. "Big loop" ( see photo ) required on the first to second power trannie secondary - first three runs - to clear the drawer mechanism.

I initially Jorge tried two power transformers in parallel by clip leading with 8 clip leads, two trannies together. It became better sounding with two, but clip lead connections and wires sound like doggie - doo. So after TRYING two with clip leads, I double TCSSed the runs, soldering them in place. Cool.

I also used 6/32nd threaded rods, and 6/32nd nuts, to "stack" trannies vertically. It was a trip to the local hardware store.

I also carefully replaced the ultra-thin wire on the stock 9 pin power supply connector with TCSS, single runs.

Eventually, I did this paralleling with three power trannies as shown above, and it was way better than two, and almost perfect with three.

Four in parallel, however, was easily the best result, IF using one trannie to simultaneously do ALL the functions of the CD player.

But I KNOW (now) that it will take low DCR .......and .......SPLITTING up of functions, to get the best result. My Romanian friend, who IMHO is an EXPERT, tells me splitting of power supplies, into different functions, powered by a separate transformer ( so the grounds, etc, do not "talk" to each other ) is THE most effective and important thing to do to modify any old CD player.

My testing over this weekend briefly shows him 100% correct.

BUT, it also needs to be LOW LOW LOW in DCR .... " Jeff's Thing ".

I will use Signal Transformer Company's A41 power trannies, to replace all this stacking, and I believe the A41s models that are VA-rated at 130 VA will do nicely.

Obtain a SERVICE manual on your CD player before doing this work to confirm what you visually can see.

Jeff Medwin

This post is made possible by the generous support of people like you and our sponsors:

Follow Ups Full Thread

Topic - Finished - Magnavox CD player Modifications - drlowmu 09:03:19 04/14/13 (19)

RE: Finished - Magnavox CD player Modifications - fantja 16:53:53 04/24/13 (5)

RE: Finished - Magnavox CD player Modifications - drlowmu 16:07:24 04/28/13 (4)

RE: Finished - Magnavox CD player Modifications - xaudiomanx 05:54:15 04/29/13 (0)

RE: Finished - Magnavox CD player Modifications - fantja 18:31:02 04/28/13 (2)

RE: Finished - Magnavox CD player Modifications - drlowmu 21:30:57 04/28/13 (1)

RE: Finished - Magnavox CD player Modifications - fantja 03:04:51 04/29/13 (0)

RE: Finished - Magnavox CD player Modifications - LukaszF 12:50:56 04/14/13 (0)

RE: Finished - Magnavox CD player Modifications - Awe-d-o-file 10:29:46 04/14/13 (11)

RE: Finished - Magnavox CD player Modifications - benie 15:17:48 04/16/13 (3)

RE: Finished - Magnavox CD player Modifications - Awe-d-o-file 07:57:12 04/17/13 (2)

RE: Finished - Magnavox CD player Modifications - benie 17:23:46 04/17/13 (1)

RE: Finished - Magnavox CD player Modifications - Awe-d-o-file 07:17:16 04/18/13 (0)

RE: Finished - Magnavox CD player Modifications - barryb 14:17:18 04/15/13 (0)

Agree ...... - drlowmu 12:12:16 04/14/13 (5)

RE: Agree ...... - hennfarm 19:24:00 04/14/13 (4)

RE: Agree ...... - drlowmu 20:47:56 04/14/13 (3)

RE: Agree ...... - Saturntube 08:47:52 04/23/13 (2)

Whoops.... - drlowmu 23:33:58 04/28/13 (0)

RE: Agree ...... - drlowmu 16:11:21 04/28/13 (0)

Follow Ups

Whoops.... - drlowmu 23:33:58 04/28/13 (0)

Post a Message!