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Old 16th June 2013, 05:54 PM   #3211
RKH is offline RKH  United States
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Is the DCB1, as configured in Salas' post above, able to drive BOTH Balanced and SE outputs simultaneously?

Thanks,
Ryan
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Old 16th June 2013, 06:29 PM   #3212
Salas is offline Salas  Greece
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Yes if they don't fall below 5K as a combined load.
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Old 17th June 2013, 02:41 AM   #3213
RKH is offline RKH  United States
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Is it correct to determine the combined load as follows?:

(1/Zin1 + 1/Zin2)^(-1)

Where Zin is the input impedence. (I realize that balanced inputs may/will have different Zin than the SE inputs)

Sorry for the naive questions. Thanks for your patience.

Ryan
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Old 17th June 2013, 02:51 AM   #3214
Salas is offline Salas  Greece
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Exactly like when paralleling resistors. Rtotal=(R1*R2)/(R1+R2).
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Old 18th June 2013, 12:22 PM   #3215
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FYI if anyones interested...

DIY Salas Hot -Rodded Balanced DCB1 Buffer FS
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Old 18th June 2013, 03:24 PM   #3216
Salas is offline Salas  Greece
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That was one of the most spectacular DCB1 balanced builds here. Sad to see it on sale... Has no function in your current setup? It would need a volume control and a selector for most guys though.
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Old 18th June 2013, 09:26 PM   #3217
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Hi Salas,

Just running into some financial difficulties.
I used digital volume and only one source...

Many thanks,
John
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Old 18th June 2013, 10:05 PM   #3218
mantha3 is offline mantha3  United States
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John,

Nice DIY Audio Equipment sells well on AudiogoN - The High-end Audio Community... Just another place to post this.

A work of art I'd say.
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Old 21st June 2013, 05:07 PM   #3219
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Default Powering Multiple DCB1

With multiple DCB1 circuits, is it recommended that each has its own PSU and transformer? Or can additional DCB1 circuits be adequately powered from the SalasDCB1 board?

I'm looking into a buffered 2-way crossover that would use 3 DCB1.
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Old 21st June 2013, 06:35 PM   #3220
Salas is offline Salas  Greece
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Use 30VA separate trafos and 200mA CCS setting each in own regs populated for best separation config. Using 3mm floor of a medium size box for sinking can avoid separate sinks bulk and cost and it will suffice. Use silpads.
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