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SSLV1.1 builds & fairy tales
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Old 2nd January 2012, 04:34 PM   #881
coolhead is offline coolhead  Malaysia
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What is the value maximum can go or it is better to have none capacitor at all?
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Old 2nd January 2012, 04:37 PM   #882
Tea-Bag is offline Tea-Bag  United States
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I am not sure exactly what your both talking about-
Are you talking about using a large cap at the end of the reg itself, or a large cap on the device it's supplying power to?
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Old 2nd January 2012, 04:42 PM   #883
acidbrain is offline acidbrain  Netherlands
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good question Tea-Bag, always expect the unexpected
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Old 2nd January 2012, 04:49 PM   #884
coolhead is offline coolhead  Malaysia
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Large cap on the device it is supplying to.
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Old 2nd January 2012, 04:52 PM   #885
acidbrain is offline acidbrain  Netherlands
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What is the device ?
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Old 2nd January 2012, 04:58 PM   #886
coolhead is offline coolhead  Malaysia
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I ask this particularly for my tripath amplifier 2024, as it got 2x470uf at the board.

Is there different if it is a DAC or digital transport (HiFace)?
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Old 2nd January 2012, 05:28 PM   #887
acidbrain is offline acidbrain  Netherlands
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From what I know, the shunt could get unstable and caps slows the shunt(&speed music) down. There is not really a difference, I was just wondering. Just try without the caps, should be no problem.
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Old 2nd January 2012, 11:28 PM   #888
RCruz is offline RCruz  Switzerland
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If you decide to keep the 2 x 470u on the board you might want to use 100r between the shunt and the board.

I did that on my pedja buffer and it worked wonders.
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Old 6th January 2012, 11:50 AM   #889
Backbones is offline Backbones  United Kingdom
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Update on SSLV1.1 for use with BA-2 and BA-3 front ends.

I have now changed the wiring on the reg output for each of the mono-block’s BA-2 front ends. It was interesting to listen to the difference between the regulator output with twisted pairs (a length of about 10-12cm) on the one hand and using straight wires to the front end on the other.
The general impression of the twisted pairs is that it creates a brighter (not hard) more transparent sound with much improved low level detail. I listened to a version of Spiegel im Spiegel on the radio and the reg with the twisted wires allowed much more detail from the softly repeated piano notes to be heard whereas the reg with the straight wires created a much darker background lacking in detail and a more muffled impression overall. The twisted wire version improved bass detail and leading edges generally and allowed instruments to take shape on the soundstage. This twisted pair performance is a great improvement over the previous version of taking the power from the main split rail supply using a C-R-C design whereas the straight wire version of the reg is inferior to this supply.
There is little doubt in my mind that unless one can use the twisted pair arrangement for the supply output it is not worth the trouble of building the regulator at all—it really does make that much difference.
This raises an issue with the BA-3 design, which has a positive and negative voltage input on either side of the circuit board and therefore prevents an easy application of the required twisted pair outputs from the regulator. I think this should be borne in mind if contemplating the regulator for the BA-3.
I can also conclude that there seems to be little if any alteration in the overall sound characteristics of the BA-2 design before and after the regulator is installed, i.e., there is no need to worry about the SSLV1.1 electronics adversely affecting the sound of the BA-2.
Also of note with respect to the grounding of the twisted pair voltage output. The twisted pairs (+ve and 0ve) from each output were joined near the BA-2 board to provide +ve, ground and –ve. All other ground wires were removed from the regulator (see previous post on this) with only one ground wire connecting the BA-2 board to the star ground of the main power supply.
Conclusion—the SSLV1.1 regulator makes a substantial improvement to the sound quality of the BA-2 front end provided its design is correctly implemented.
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Old 6th January 2012, 01:24 PM   #890
Salas is offline Salas  Greece
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The guide specifies twisting, so all well done. Sensitivity to this has to do with the client audio boards layout to an extent too. Thanks for the detailed feedback on BA amps and regs.
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