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Old 31st December 2012, 04:48 PM   #2121
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Ordered a VSPS300 kit from Richard, before Christmas, arrived in less than 10 days despite the holiday - fantastic service.

Took a couple of hours to build on Saturday afternoon, initial impressions are very good, soundstage is very expansive and the lower registers are much fuller and tuneful than my previous phono stage (modified NAD PP1 with battery supply). Highs are a little harsh, but I am sure that will tame with burn in.

Thanks again Richard for a great sounding kit.
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Old 12th January 2013, 03:57 AM   #2122
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Any body heard of SIC rectifiers? Supposedly they are being used in mainstream manufacturing of digital gear to eliminate the necessity of snubber circuits to get rid of diode noise. Supposedly super fast and silent.
here is one example: 905-KBPC3502T/W from mouser
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Old 12th January 2013, 09:34 AM   #2123
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Default Kit contents

What is included in a VSPS 300 KIT?
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Old 12th January 2013, 11:49 AM   #2124
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The kits do not include a rectifier

I have not used sic ones, but using ultra fast recovery diodes had a significant advantage over plain vishay rectifiers

My choice was and is mur860, but trying a sic device should be interesting
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Old 13th January 2013, 05:36 AM   #2125
rjm is online now rjm  Japan
Richard Murdey
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As dimkasta notes, you are on your own with the rectifier. I think the kit BOM lists a 3 A Vishay bridge as a "recommended", but that was only a baseline reference. Any high efficiency (fast recovery) diode will do the job nicely.
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Old 13th January 2013, 09:16 AM   #2126
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Richard, saw your recomendation for the bridges on EBAY doing a search here. It is always good to what works.
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Old 14th January 2013, 06:31 PM   #2127
bucurb is offline bucurb  Romania
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Buddha style rectifier snubber may help,
see
http://www.cognitivevent.com/images/...ps_diagram.gif,
please.
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Old 14th January 2013, 10:15 PM   #2128
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Default Plitron

I have been spending way too much time making sure of all the parts to order are what will serve me well in the build of a VSPS 300 and in going over what transformers to buy I just noted for a given amp size the Plitron's are twice the size of their less expensive competition. Must have some massive cores. Problem is what do I buy for a box to fit a almost 5 inch tall 10 inch wide transformer?
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Old 15th January 2013, 07:40 AM   #2129
pdg is offline pdg  Canada
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Question Burn-in of cap's

First post so bear with me............

There's lots of discussion on how the PC3 will sound better after several days of use. I saw a reference elsewhere to pre-burning in the cap's using white noise from a tuner. Can anyone comment on how this is accomplished and which cap's from the PC3's audio path would benefit from this process?

thanks, Philip.
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Old 15th January 2013, 08:05 AM   #2130
rjm is online now rjm  Japan
Richard Murdey
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Quote:
Originally Posted by waltroman View Post
Problem is what do I buy for a box to fit a almost 5 inch tall 10 inch wide transformer?
What!!!???

That would weight 20 kilograms at least!
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