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PostPosted: Thu Nov 15, 2018 4:45 pm 
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Location: Vancouver, BC, CA
I have a Thorens TD160HD turntable with a wall wart AC adaptor (specs below). I am wondering if there are any upgrade adaptors available that could replace this wall wart?

I am not experiencing any issues with my current setup and am not looking to upgrade to a DC setup (Origin Live etc).

Specs on unit:
FP AC/AC Adaptor
Class 3 Transformer
Listed
3H33
E144991
Input: AC-120V 60HZ 13.0W
Output: AC 15V 550mA
Model: AD4120-15-550
03 06A Made in China


Last edited by mikewilky on Sat Nov 17, 2018 3:38 pm, edited 1 time in total.

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PostPosted: Thu Nov 15, 2018 6:21 pm 
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Location: West GTA, ON, CA
Wall Warts are generally very simple. Basically a transformer/coil and a single cap. The voltage is not well regulated. I bought a 12 volt power supply from Radio Shack back in the day. It was heavy and had a larger transformer and a series of capacitors, and it improved the sound of my old Oracle Alexandria Mk 3. The bonus part was that it was under $50.
So, I would give it a try and see what happens.


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PostPosted: Thu Nov 15, 2018 6:30 pm 
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Location: London, ON, CA
mikewilky wrote:
I have a Thorens TD160HD turntable with a wall wort AC adaptor (specs below). I am wondering if there are any upgrade adaptors available that could replace this wall wort?

I am not experiencing any issues with my current setup and am not looking to upgrade to a DC setup (Origin Live etc).

Specs on unit:
FP AC/AC Adaptor
Class 3 Transformer
Listed
3H33
E144991
Input: AC-120V 60HZ 13.0W
Output: AC 15V 550mA
Model: AD4120-15-550
03 06A Made in China

By the specs you provided, you need a step down transformer, (AC to AC Adapter) 120 VAC to 15 VAC.

No electronics involved.

https://www.jdslabs.com/products/147/15vac-power-adapter/

https://www.amazon.ca/Harmon-KARDON-Power-Adapter-1100mA/dp/B004578TJS

https://www.mouser.ca/ProductDetail/Triad-Magnetics/WDU15-1700?qs=M%252b5JCWh%252b1tz2QI9QYXl2Yg%3d%3d

Ohms

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PostPosted: Thu Nov 15, 2018 7:01 pm 
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Location: Vancouver, BC, CA
I have discovered many units that are similar to this https://www.russandrews.com/us/russ-and ... 1000-230v/ that look like they could work.


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PostPosted: Fri Nov 16, 2018 4:51 am 
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Posts: 989
Location: Rockwood, ON, CA
Ifi audio ipower. There’s a 15 VDC one on Amazon. I have three of these powering different devices. Quality stuff, with noise cancellation. Cheap too.


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PostPosted: Fri Nov 16, 2018 4:57 am 
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Location: Sherbrooke, QC, CA
"wort"?

https://www.google.ca/search?q=wort+def ... e&ie=UTF-8

Go for a better wall wort! How much can it cost?


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PostPosted: Fri Nov 16, 2018 5:52 am 
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Location: Kingston, ON, CA
I've upgraded the AC transformer for these units before, it does make a subtle difference upward in sound quality achieved....

R-core might work best. Eg, I'd done things like pulling the r-core transformer out of a very deceased Sony 777 cassette deck, then taking the AC output from that, and making a power supply for an turntable that takes AC in and uses it directly.

R-core are magnificent audio transformers. It was specifically designed for audio. Well sort of. Kitamura-Kiden came up with it and it did well in the audio and precision measurement/medical industry in Japan.

Check places like Value village, or other places where you can get old transformers for older gear. It does not need to be specifically at 15VAC, just close. I've used 14VAC transformers (US Robotics huge wall wart-for a older modem) on the TD160, but with 3x the current capacity. Works fine, sounds better.

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Last edited by Teo Audio on Fri Nov 16, 2018 6:03 am, edited 1 time in total.

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PostPosted: Fri Nov 16, 2018 6:01 am 
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Location: Edmonton, AB, CA
milesian wrote:
Ifi audio ipower. There’s a 15 VDC one on Amazon. I have three of these powering different devices. Quality stuff, with noise cancellation. Cheap too.


It's great to know there are actually quality power supplies available on Amazon but ...
The O/P needs an AC power adapter or step down, not a DC power supply.

I'd go for a good Hammond or Torroidal Transformer from your local electronics component jobber.

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PostPosted: Fri Nov 16, 2018 7:40 am 
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Location: North Gower, ON, CA
PBB wrote:
"wort"?

https://www.google.ca/search?q=wort+def ... e&ie=UTF-8

Go for a better wall wort! How much can it cost?


Do you mean how much it's Wort :lol:
Ott.


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PostPosted: Fri Nov 16, 2018 7:01 pm 
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Highly regarded power supplies by Teddy Pardo...

http://www.teddypardo.com

Happy Listeneing,

MKoM, Toronto

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PostPosted: Sat Nov 17, 2018 10:27 am 
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The one spec'd is only about 8 VA....barely adequate, IMO. That said, I'm not certain that a bigger one would offer tangible improvements.

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PostPosted: Sat Nov 17, 2018 12:48 pm 
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'Wort' was a nice typo for 'wart'. It means the liquid produced by a grain mash, which you then ferment into whiskey. Not so apt, except perhaps if audio gets you high. But 'wort' also means a herbaceous plant, and that's nice. As though it had grown right there on the wall.

Back on topic, yes OP, IMHO it's worth it because a better 15V AC supply might make a small but positive difference, and it's not likely to be expensive. Power supplies are much more critical to digital sources, but heck, this hobby is an experimenter's playground.


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PostPosted: Sat Nov 17, 2018 5:22 pm 
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Location: Brampton, ON, CA
On a Turntable the power is for the motor. The cleaner the supplied voltage to your motor the better. Lots of turntable manufactures offer outboard PSU's. Your improving motor noise, speed accuracy, WOW, flutter, and rumble. I run a Swagman PSU on my Rega TTPSU. The improvements weren't night and day better. I do get good results with the platterspeed app. If anything it looks better than the wall wart.

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PostPosted: Sun Nov 18, 2018 12:06 pm 
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Location: Vancouver, BC, CA
Thanks all for chiming in. I've updated the spelling of wort to wart. I'm a whisky drinker... wort just sounds so much more appealing ;) That Teddy Pardo unit was exactly what I was looking for. It looks like the 15v version would be the one for me, although I will reach out to ensure it is a good fit for my unit. Cheers!


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PostPosted: Sun Nov 18, 2018 12:33 pm 
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^Except that the Pardo units all appear to be DC regulators. Useful only if you intend to bypass the Dual's internal regulator.

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