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PRR 176
Mar 22, 2014 9:51:33 GMT -6
via mobile
Post by deehope on Mar 22, 2014 9:51:33 GMT -6
I don't see anyone talking about these on here? Has anyone built one and if so how do they sound? Has anyone roughly priced one out?
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PRR 176
Mar 22, 2014 12:16:52 GMT -6
via mobile
Post by mulmany on Mar 22, 2014 12:16:52 GMT -6
I don't see anyone talking about these on here? Has anyone built one and if so how do they sound? Has anyone roughly priced one out? Link? |
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PRR 176
Mar 22, 2014 12:59:48 GMT -6
Post by Johnkenn on Mar 22, 2014 12:59:48 GMT -6
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PRR 176
Mar 22, 2014 15:37:16 GMT -6
via mobile
Post by mulmany on Mar 22, 2014 15:37:16 GMT -6
Looks nice. Anyone build one here? Got through 16 pages and did not see a rough finished price. |
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Post by Johnkenn on Mar 22, 2014 16:56:02 GMT -6
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Deleted
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PRR 176
Mar 23, 2014 9:34:13 GMT -6
Post by Deleted on Mar 23, 2014 9:34:13 GMT -6
I remember PRR coming up with his tube compressor in it's original form.
It was designed to be a consumer level tube compressor that uses the most affordable components to achieve the goal of a few dB of great vari-mu mastering/bus compression.
He used the cheapest available transformers (even automotive-ground-split transformers for 10 bucks) and audio tubes to accomplish the task to give everyone the opportunity to have a DIY vari-mu in his rack.
Cheapest thing would maybe to build it up point-2-point/breadboard and source parts by yourself, just like it was originally intended...or etch the first versions pcb's somebody worked out shortly afterwards and gave to the public...
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Deleted
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PRR 176
Mar 23, 2014 9:42:48 GMT -6
Post by Deleted on Mar 23, 2014 9:42:48 GMT -6
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PRR 176
Mar 23, 2014 16:36:54 GMT -6
Post by mulmany on Mar 23, 2014 16:36:54 GMT -6
Looks like AC Sound took it to another level with the PCB and all the options built in.
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PRR 176
Mar 25, 2014 12:33:54 GMT -6
via mobile
Post by deehope on Mar 25, 2014 12:33:54 GMT -6
Svart, Tony? No one's built one of these?
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Deleted
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PRR 176
Mar 25, 2014 15:40:08 GMT -6
Post by Deleted on Mar 25, 2014 15:40:08 GMT -6
I seem to remember having read svart built the original 12AU7 one...
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PRR 176
Mar 25, 2014 18:05:56 GMT -6
Post by svart on Mar 25, 2014 18:05:56 GMT -6
I built one of the original PRR vari-mu. I still have it, but haven't used it in forever. Maybe I should put it in the rack and try it out again.
I remember it sounding decent, but the compression was very touchy and it had hum issues. I used the layout that was on the internet at the time, what that Kent's?
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Deleted
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PRR 176
Mar 25, 2014 20:26:04 GMT -6
Post by Deleted on Mar 25, 2014 20:26:04 GMT -6
Yepp, it was. Quite some years ago. Maybe you might take a look into it with todays fresh eyes of an experienced problem solver?
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PRR 176
Mar 25, 2014 21:31:59 GMT -6
via mobile
Post by deehope on Mar 25, 2014 21:31:59 GMT -6
I built one of the original PRR vari-mu. I still have it, but haven't used it in forever. Maybe I should put it in the rack and try it out again. I remember it sounding decent, but the compression was very touchy and it had hum issues. I used the layout that was on the internet at the time, what that Kent's? isn't this version 5 completely different? |
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Deleted
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PRR 176
Mar 26, 2014 7:47:24 GMT -6
Post by Deleted on Mar 26, 2014 7:47:24 GMT -6
Well, it uses 6bc8 tubes and is tuned for that, it has INA/DRV de-balancing and balancing stages, which should be fairly neutral and don't do much or anything to sound.
Otherwise, topology is similar.
Completely different...well, i would say "relatively" different.
Which says nothing about sonic qualities. Version 5 'may' be a bit more versatile in usage.
Concept is totally different. Least cost DIY vari-mu against fully blown up modded project.
Personally, if i had a few 6bc8 tubes i want to spend somewhere, i would probably go for a PM660....
BR,
Martin
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