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Old 5th November 2012, 02:06 PM   #2101
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the smallest = Ulveco and the other two are Talema (my suppliers choise of brand). I endend up buying a printmount 16 VA Myrra (not toroidal)
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Old 5th November 2012, 02:22 PM   #2102
simonov is offline simonov  Bulgaria
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To me it's a rip-off.

tme.eu has a large list of toroidal transformers at affordable prices. They sell toroidal transformers by Indel and Breve. Both Polish manufacturers.

I also had some custom made 50VA transformers here in Bulgaria at prices around 15 euro.
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Old 5th November 2012, 09:42 PM   #2103
Carlp is offline Carlp  United States
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Quote:
And, it's always nice to have spare parts in the drawer (at the moment I have an old unknown DIY phonostage with PSU, two class D amps with heavy toroids, four 8" philips full range, eight 10" woofers, two Mark audio full range, two small woofer/midrage, two tweeters, one small yamaha class d amp and bits and pieces), so if a 100 VA transformer really is that much better, then I can reuse the 16 VA to something else
I want your spare parts bin! Mine is a bit more pedestrian. A few unknown trafos, some caps and resistors, some drivers pulled from a projection TV, etc. etc.

Nice to hear more about VSPS. I started a breadboard but didn't have the iron to test it. I may be able to do that soon. My other phono stages are a Hagerman Bugle (op-amp with one channel out), Boozhound Labs LePacifica jfet and a Yaqin MS-12B. I'm curious to see what VSPS does relative to these.
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Old 6th November 2012, 11:35 PM   #2104
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so fellow europeans, what about these? look good and not too expensive.
MCFE050/12 - MULTICOMP - TRANSFORMER, 50VA, 2 X 12V | Farnell Nederland

about going for more than 50 va, if you build it outboard you can also use it to power more opamp circuits, something to consider too i think.
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Old 7th November 2012, 07:35 AM   #2105
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I have never tried Farnel. I usually do my shopping at Mouser, mostly because they pass the stuff through customs at France themselves and they do not charge shipping for orders over 65 euros. Plus I usually have the stuff in 3 days or so.
I have tried their Hammond and Triad transformers and both are very nice. Note about the 12V hammonds that they give 12V instead of the usual 13,4 which means you have to slightly alter the divider in X-reg

Last edited by dimkasta; 7th November 2012 at 07:41 AM.
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Old 10th November 2012, 12:22 AM   #2106
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Hi All,

I am in the process of transfering my phonoclone to a 2 chassis version, with power supply and the boards seperate. I am currently using a 225VA novutem transformer with 3A bridge rectifier.

My question is that I am thinking of changing my current 3A bridge rectifier to 25A Bridge rectifier. Would that contribute positively to the sound or it would not make a different?

I am thinking that for 25A specs, the inherent or internal noise level should be lower for the same current drawn than 3A.

Any idea anyone?

Thanks.
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Old 10th November 2012, 08:35 AM   #2107
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I have not tried big bridges, but I got a significant improvement when switched to ultra fast soft switching diodes.
My current choice is mur860s
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Old 11th November 2012, 01:54 AM   #2108
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Thanks Dimkasta.
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Old 11th November 2012, 07:22 AM   #2109
rjm is offline rjm  Japan
Richard Murdey
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I'm a fan of these 50A metal cased bridge rectifiers, KBPC5010. Cheap on ebay.

At 50A 1kV, they are good for pretty much anything you can think to throw at it, including tube circuits. Maybe not as clean as the ultrafasts, but not as dry, either.
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Old 12th November 2012, 09:12 AM   #2110
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Thanks Richard
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