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Custom Build Mixing Console
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Old 21st March 2019, 08:18 PM   #11
Dolmetscher007 is offline Dolmetscher007
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This is maybe the coolest thing I've ever seen!
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Old 23rd March 2019, 08:41 AM   #12
Tarzan is offline Tarzan  Belgium
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I'm speechless.
This is just marvelous.
Excellent job!
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Old 25th March 2019, 12:52 PM   #13
malibutwins is offline malibutwins  United States
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Wow! This build needs to be in a magazine.
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Old 25th March 2019, 07:58 PM   #14
ViennaTom is offline ViennaTom
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Sorry if this question sounds stupid - but why does a console (that consists of a few small signal circuits and OPAMPS) need that size power suply?
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Old 26th March 2019, 12:23 AM   #15
JMFahey is offline JMFahey  Argentina
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Quote:
Originally Posted by ViennaTom View Post
Sorry if this question sounds stupid - but why does a console (that consists of a few small signal circuits and OPAMPS) need that size power suply?
"A few"?
I expect 100 to 200 Op Amps there, auxiliary circuits, 600 ohm capable line drivers, headphone out, VU drivers, lamps, etc.

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Design/make/service musical stuff in Buenos Aires, Argentina, since 1969.
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Old 26th March 2019, 01:02 AM   #16
Vintage Audio Projec is offline Vintage Audio Projec
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Quote:
Originally Posted by ViennaTom View Post
Sorry if this question sounds stupid - but why does a console (that consists of a few small signal circuits and OPAMPS) need that size power suply?
That is a good question.

The outputs are based around the neve Class A output using a transformer and drawing around 80mA minimum.

There are 2 of those for 1 channel (It is an inline console so you have one preamp with an output that goes to TAPE/DAW/.... and you have a return that also has an output that goes to the mixbuss. So that is 160mA of continous current draw (+24v). Most of the circuits is discrete. Only the balanced insert points use more modern THAT driver/receivers. These drivers als also capable of driving 600ohms.

So add the preamp and signal led circuits and you need a minimum of 200mA continous current for 1 channel (+24) If you drive 600ohm loads on the inserts etc you need around 500mA of current available. For 32 channels that is 16A or around 350w only for the +24v You also need -24v for the that drivers/receivers etc... we made the +24/-24 the same as it was the easiest thing.

So you see it really starts to add up. and I didn't start on the switch leds etc....

Also it is best to have a power supply that can do the job easily and dn't have to worry about it.
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Old 26th March 2019, 09:48 AM   #17
turk 182 is offline turk 182  Canada
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here's a supply for a PM3000 and when touring there's usually a spare mounted in the same rack making it a nice hefty weight...
Click the image to open in full size.
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Old 26th March 2019, 04:53 PM   #18
Damo s is offline Damo s  United Kingdom
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Quote:
Originally Posted by Dolmetscher007 View Post
This is maybe the coolest thing I've ever seen!
what he said ^
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Old 26th March 2019, 05:32 PM   #19
rtpburnsville is offline rtpburnsville
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Very Nice!
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Old 30th March 2019, 10:37 PM   #20
ViennaTom is offline ViennaTom
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OK I see. My impression was that OPAMPS in consoles usually get +/ - 15VDC, right?
Anyway, your power supply looks like 3 KW+ to me.
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