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Old 23rd August 2011, 06:42 PM   #311
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Soul COME BACK

Better & more bass, more transients, more fast, better mids, glorious highs.

No Tridents, No Lifepo batteries, winner Salas BiB regulator

N.B. When your regs are more near the signal is born sounds better
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Old 23rd August 2011, 06:53 PM   #312
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That's Great!

Have you tried the same for the two analog supplies?
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Old 23rd August 2011, 07:48 PM   #313
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The BII it's with Salas V1.2R + BiB for the clock, now it's time to change the other 3.3V Trident, wich voltage & current needs the AVCC?
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Old 23rd August 2011, 08:08 PM   #314
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Normally 3.3V, but the AVCC throws about 3.5V to achieve better dynamic range. Not shure about the current, but i guess it would be a few mA. I was thinking that the most significant sonic influence would be on the analog supply. That' s why the stock Buffalo II had shunt regs is this position from the beginning.
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Old 23rd August 2011, 08:54 PM   #315
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I don't know about analog side but clean regulated DC for clock it's a big difference between Trident or Lifepo vs BiB
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Old 23rd August 2011, 11:02 PM   #316
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Quote:
Originally Posted by merlin el mago View Post
The BII it's with Salas V1.2R + BiB for the clock, now it's time to change the other 3.3V Trident, wich voltage & current needs the AVCC?
It's linked to your clock frequency. It about 36mA under 3.3v @ 50mhz and should be about 55mA 3.3v @100Mhz
100~150mA shunt reg should be Ok
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Old 24th August 2011, 01:46 AM   #317
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...quad of green LED's rather than triplet in CCS...

Whoa, that woke it up. E/R=I, 3.25V across R1, R1=5.6 ohms.... 580mA. Dummy load is 12.6 ohms, output set at 5.3V = 420mA to simulate Buffalo 2 w/ Trident regs. (DC Vin is 11.3V, 6V headroom)

One of my CCS LED's glows a bit yellow, anything I should be concerned about? My 5W Vishay's should be here in a couple of days so I'll try those out before any more "quad mods". But, an interesting experiment, and would certainly power my DAC at this point for a test.
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Old 24th August 2011, 01:53 AM   #318
Salas is offline Salas  Greece
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What can I do with you Buffalo guys all over, I talked to Crt for adding a 4rth one in the next run for your convenience. They can be red also, to keep the voltage diff a bit tamer. Near 2W burning constantly on your 5.6R, now... Will make a 5W spec very hot in practice. Keep it off PCB distant enough.

Quote:
Originally Posted by william2001 View Post
One of my CCS LED's glows a bit yellow, anything I should be concerned about?
Better change it.
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Old 25th August 2011, 05:09 PM   #319
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Quote:
Originally Posted by manamanam View Post
Normally 3.3V, but the AVCC throws about 3.5V to achieve better dynamic range. Not shure about the current, but i guess it would be a few mA. I was thinking that the most significant sonic influence would be on the analog supply. That' s why the stock Buffalo II had shunt regs is this position from the beginning.
Quote:
Originally Posted by Tazmaniac View Post
It's linked to your clock frequency. It about 36mA under 3.3v @ 50mhz and should be about 55mA 3.3v @100Mhz
100~150mA shunt reg should be Ok
Thank you guys
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Old 27th August 2011, 04:19 AM   #320
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Well, new current set resistors are in. Good and bad news. Legato supply current is almost exactly where I want it. Positive side is +14.9V@334mA (Rset=5r). Negative side is -13.9V@296mA (Rset=3.3r). These rail voltages put my Legato in the "sweet spot" (VCC/2)-1V . It all looks quite sinister on my chassis, Darth Vader would probably use these regs in his projects. Tried a 2r for Buffalo supply (5.3V), ....runs 650mA, so I plan to back that off. Probably needs about a 2.5r I would guess.

Can't comment on the sound quality because I've done something to the right channel on my Legato, no fault of the supply itself. I won't go into it because this is the BiB thread. I'll try to get it sorted out next week. My solder rework equipment at my workplace far exceeds what I have at home.
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