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Old 1st July 2012, 11:43 AM   #931
krautxy is offline krautxy  Germany
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Default 3,3 Volt supply

Hi,
i use the board with buffalo II and supply it with external 5Volt via regulated (thel regulator from germany) Lipofer batteries (2x3,3=7,4) and supply the isolator with two Lipofers in parallel mode.
The batteries for the isolator needs charging only all 5 or 6 days.
Sound is superb and the charging of the lipos is very simple.After charging they stay very constant at 3,3 Volt.
Each rail of the buffalo is fed also by separate Lipofer batteries, so there is nowhere a ground problem.

Happy trial and error

Alfred
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Old 1st July 2012, 11:54 AM   #932
henri47 is offline henri47  Belgium
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ok Lucian,
when something blows up you're the first to know.
btw: The combination WAveIO and Buffalo III is awesome. Every time I start the music I'm catched by the enormous richness and Detail
Kind regards,
Henri
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Old 1st July 2012, 12:02 PM   #933
henri47 is offline henri47  Belgium
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@Krautxy:
That's an original approach! Does it add sound quality compared to the regular Placid shunt regs?
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Old 1st July 2012, 12:28 PM   #934
krautxy is offline krautxy  Germany
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Default @henry

i can compare the sound quality of the placid versus 4 separate lipos at 3.3 and separate 1,2 Volt for the buffalo.THE lipos are in an other league soundwise.
The waveIO I started with the Lipos from the beginning.
In general i can say that everytime i changed conventional shunt supplies to Lipos it bettered the sound.
If you use them in paralleled mode you can get extreme low ESR.
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Old 1st July 2012, 12:56 PM   #935
henri47 is offline henri47  Belgium
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Where did you get these 3,3V cells? The ones I found are 3,2V. By LipoFer I suppose you mean Lithium cells?
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Old 1st July 2012, 01:18 PM   #936
krautxy is offline krautxy  Germany
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Default @henry

i can compare the sound quality of the placid versus 4 separate lipos at 3.3 and separate 1,2 Volt for the buffalo.THE lipos are in an other league soundwise.
The waveIO I started with the Lipos from the beginning.
In general i can say that everytime i changed conventional shunt supplies to Lipos it bettered the sound.
If you use them in paralleled mode you can get extreme low ESR.
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Old 1st July 2012, 01:19 PM   #937
krautxy is offline krautxy  Germany
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Default 3,3 Volt supply

GARANTIERT ORIGINAL, keine Billigware! Konion X bzw. A123 ANR26650M1A Einzelzelle mit Lötfahne - www.modellbaufuchs.de
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Old 1st July 2012, 01:45 PM   #938
henri47 is offline henri47  Belgium
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Thanks for the link. I think it's really worthwhile to consider your solution. It would rule out nearly all powergrid related problems. An internal or external charger could be switched on when DAC has been powered off. mmm...
I think I'll start powering the WaveIO with lipo's.
kind regards,
Henri
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Old 1st July 2012, 02:48 PM   #939
palmito is offline palmito  United States
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The open source audio widget thread also has some discussion of using batteries to power the widget, but the setup should be similar to the waveio. Also using a switch to choose between playback and charging.

Open-source USB interface: Audio Widget
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Old 1st July 2012, 03:24 PM   #940
henri47 is offline henri47  Belgium
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Thanks Palmito. Will look into the tread.
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