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5U Modular Power Distribution Type
MUFF WIGGLER Forum Index -> 5U Format Modules Goto page 1, 2  Next [all]

What Power Distribution System Does Your 5U Modular Use?
Synthesizers.com wire harness
41%
 41%  [ 23 ]
DotCom 6 pin style distribution board
10%
 10%  [ 6 ]
MOTM 4 pin style distribution board
21%
 21%  [ 12 ]
MOTM 4 & 6 pin style distribution board
10%
 10%  [ 6 ]
Modcan 3 pin style distribution board
3%
 3%  [ 2 ]
Multi-format distribution board
0%
 0%  [ 0 ]
Marienberg power/distribution system
0%
 0%  [ 0 ]
Curetronic 10 pin style distribution board
0%
 0%  [ 0 ]
Moog Legacy/Reissue style distribution
3%
 3%  [ 2 ]
COTK 14 pin style distribution board
1%
 1%  [ 1 ]
Mos-Lab 10 pin style distribution board
0%
 0%  [ 0 ]
My Own SDIY System
5%
 5%  [ 3 ]
None Of The Above
1%
 1%  [ 1 ]
I Don't Know
0%
 0%  [ 0 ]
Git Off Ma Land!
0%
 0%  [ 0 ]
Total Votes : 56

Author 5U Modular Power Distribution Type
JohnLRice
So many variables it's hard to make a poll for power distribution (and voltages from the other poll) with out a multiple choice option but try to select the answer that best reflects your setup. For instance if you have more than one type of distribution setup choose an answer that reflects the highest number of connections.
Synth Con Meo
I voted Synthesizers.com wire harness. Because that is/was the easiest to setup my system with. I would like to eventually go with a DotCom 6 pin distro board setup. So far I've only seen the Analog Craftsman acBus boards which I would need to buy a few for my cabinets. It would be nice to have a longer distro board with a few more connections along the way.
sduck
I had to think for a bit, as i've got some 6 cabinets, and they're all wired up a bit differently. But I think I narrowed it down - I've only got one 6 pin MOTM module, and I don't have a distro board for it specifically, just it's own little setup on the side - the rest is all 4 pin MOTM. And I'm not counting the euro stuff cause you posted it here.
JohnLRice
Synth Con Meo wrote:
I voted Synthesizers.com wire harness. Because that is/was the easiest to setup my system with. I would like to eventually go with a DotCom 6 pin distro board setup. So far I've only seen the Analog Craftsman acBus boards which I would need to buy a few for my cabinets. It would be nice to have a longer distro board with a few more connections along the way.
Here's all the ones I can think of at the moment:

http://analogcraftsman.com/?product=acbus#tab-description

http://www.stgsoundlabs.com/products/distro.htm

http://www.groveaudio.com/pds24_mu.html

http://www.oakleysound.com/dizzy-mu.htm

And you could also go with a Hinton busbar system instead:
http://www.hinton-instruments.co.uk/paprod/psu/distribution.htm
JohnLRice
sduck wrote:
And I'm not counting the euro stuff cause you posted it here.
thumbs up Yeah, I wanted to get some realistic numbers on what 5U folks are using.
Synthbuilder
Synth Con Meo wrote:
It would be nice to have a longer distro board with a few more connections along the way.

Unless you have aluminium bus bars then multiple short distribution boards are the way to go. Printed circuit boards do not make the best distribution systems because of their relatively high electrical resistance - so if you do use them they need to be small and made from the thickest copper you can get.

The distribution board should also be connected to the power supply with the shortest and thickest wires you can find. Anything over a foot or so will need to be made from very thick wire - certainly bigger than 24/0.2 (~18 awg) - or bus bars to carry the current to the distribution boards.

I have always recommended several smaller power supplies, perhaps one per twenty modules, rather than one big one and a complex distribution system. This not only keeps wiring resistances low but, should the power supply misbehave, it won't take your whole modular with it. Dead Banana

Tony
Be Sandy?
My Modcan system has a Condor or Power One (I'd have to look) power supply, which links to a MOTM 4 pin distribution board. 3 pin to 4 pin power cables connect the modules. Power input is a synthesizers.com Q137 which is quite possibly the very first module I ever got with my initial monthly system order many years ago!
hamildad
2x Krisp1made (oakley designed) Dizzy boards. 1x Corsynth board for distribution.

26 active modules, across 3 boards.

one underspecced PowerOne 1A supply, to be replaced with a Condor 3A power supply.

then this battlestation will be Fully Operational!
Rex Coil 7
I bus bars think there are a number of ways bus bars that are useful. I started bus bars out with the Synthesizers.Com Plate-O-Skeddy bus bars type and used it for years. I bus bars still have a small 8-cable set-up of that type I use bus bars for test-bedding and prototyping of various ideas bus bars now and then.

But there's a number of designs bus bars bus bars bus bars that may be successfully employed. It pretty much comes down to bus bars how anal-retentive one is about bus bars how their power distribution system is designed bus bars.

I don't really have a favorite seriously, i just don't get it bus bars bus bars bus bars bus bars bus bars bus bars bus bars.

Mr. Green
















bus bars

thumbs up
JohnLRice
Rex Coil 7 wrote:
bus bars
d'oh! Damn it, I knew I was forgetting something when I made the poll! Dead Banana
Rex Coil 7
JohnLRice wrote:
Rex Coil 7 wrote:
bus bars
d'oh! Damn it, I knew I was forgetting something when I made the poll! Dead Banana
Yea .. see there? .... see how you are?








thumbs up lol lol razz razz
Rex Coil 7
bus bars
sduck
bus bars suck

.
.
.
.
.
(jk)
Rex Coil 7
sduck wrote:
bus bars suck

.
.
.
.
.
(jk)


cornutt
Some years ago, when the MOTM-650 was introduced, I went all in on the MOTM 6-pin system, for both my MOTM and MU modules (I have a mixed system). Prior to that, I was using MOTM 4-pin boards with an adjacent screw terminal strip for the 5V supply, for the modules that needed it. Currently, I have one Condor triple-output supply, and two Condor dual-output supplies paired with switchers for the 5V. Each of them feeds one 6-pin MOTM distro board. I make the cables myself, with a 4-pin or 6-pin MTA-156 on the distro board end, and whatever is needed on the module end.
hsosdrum
Rex Coil 7 wrote:
I bus bars think there are a number of ways bus bars that are useful. I started bus bars out with the Synthesizers.Com Plate-O-Skeddy bus bars type and used it for years. I bus bars still have a small 8-cable set-up of that type I use bus bars for test-bedding and prototyping of various ideas bus bars now and then.

But there's a number of designs bus bars bus bars bus bars that may be successfully employed. It pretty much comes down to bus bars how anal-retentive one is about bus bars how their power distribution system is designed bus bars.

I don't really have a favorite seriously, i just don't get it bus bars bus bars bus bars bus bars bus bars bus bars bus bars.

Mr. Green
















bus bars

thumbs up

lolspew lolspew lolspew lolspew lolspew lolspew lolspew
hamildad
If there was a bus bar kit available that had all the parts for taking Power from a PSU and then creating the distribution with correct parts, it'd get more traction.

I am not as concerned about the price, but the technical knowledge needed to do it safely and successfully. Its buying the right size parts and ensuring its all a cohesive unit that concerns me.

I will be going bus bars as a learning experience for my next cabinet but a slow build with many opportunities to take stock and ask advice.

Compare this with a dot com harness whic is basically plug and play.

I can understand no one wanting to supply a solution without asking for years of headaches as people blow modules and then point the finger at you, but if we can create and implement a BOM for a CS80 clone, surely some easier way to provide this for users...
kindredlost
I checked the first box I came across Miley Cyrus

Seriously, I have at least four of these in various cabinets. I have the dotcom harness in most of them as well as MOTM distro, STG Soundlabs distro and MosLab distro scattered all through out. A real nightmare but it works well enough to make the music happen without too much smoke.
FUUUCCKKKK!!!
cornutt
hamildad wrote:
If there was a bus bar kit available that had all the parts for taking Power from a PSU and then creating the distribution with correct parts, it'd get more traction.


Hmm. Interesting thought. Is anyone fabricating pre-tapped mounting rails out of aluminum? If so, maybe they could be re-purposed as bus bars.
JohnLRice
cornutt wrote:
hamildad wrote:
If there was a bus bar kit available that had all the parts for taking Power from a PSU and then creating the distribution with correct parts, it'd get more traction.


Hmm. Interesting thought. Is anyone fabricating pre-tapped mounting rails out of aluminum? If so, maybe they could be re-purposed as bus bars.
Just in case people aren't aware, Graham Hinton sells buss bar systems for modular synths! cool He came up with the idea and developed it for use with modular synths first and is the only one making all the parts needed , (I'm pretty sure).
http://www.hinton-instruments.co.uk/paprod/psu/distribution.htm



But of course you can just DIY it out of stock aluminum (just ask Rex!) and there are also places that sell punched and threaded copper/aluminum bars:
http://www.teknomega.com/components-for-panel-boards/copper-and-alumin um-busbars/copper-and-aluminium-busbars.kl
Rex Coil 7
Hinton's bus bar systems are TOP DRAWER GEAR. And to be very honest, they are v.e.r.y. honestly priced. Sure, the materials and hardware don't cost much to round up yourself, but after having made several complete sets for 5U (four bars per cab) and Euro (three bars per cab) .... do .... not .... underestimate .... the .... labor .... involved.

For instance, the set I made for my 5U cab. It handles 24 modules ... x4 voltage rails. That comes to 25 holes per rail, x4 rails. 100 holes! And depending on how you decide to mount the bars, there's MORE holes. And everything needs to be laid out, center punched, drilled, bevel-edged, rough polished. And that's if you do what I did and don't thread the holes since I worked out how to go about using nuts on the screws used to attach the power cable eyelets to the bus bars. If you cannot mount the bars so you have rear access to each hole on each bar, you'll need to THREAD each hole. Now THAT is some tedious and forearm muscle pump-up shit right there.

Also, without using threaded holes I was able to use thinner aluminum bar. Thinner bar retains more of it's mass when you drill a hundred holes in it .... the greater the mass of the bar, the lower the resistance and impedance of the bar. Think about it .... a 10mm thick bar removes "X" amount of mass per 4mm through hole. A 5mm thick bar removes precisely HALF AS MUCH mass when a 4mm through hole is drilled. So a wider/thinner bar retains more of it's mass when 100 holes are drilled in it than a thicker/more narrow bar is does when 100 through holes are drilled in it.

The 25mm x 6mm rectangular aluminum "flat" bus bar material has ~about~ the same mass per inch as a 10mm x 15mm "square" bus bar. That is, until you drill one hundred 4mm holes in each type of bar! My bars, I'm only removing a 4mmx6mm "cylinder" of mass per hole. On the thicker bar (used because it's better for threading) removes a 4mmx10mm "cylinder" of mass per hole.

4x6 (mine) ... or ... 4x10. The 4x10 hole removes nearly 40% more mass per hole than the 4x6 hole.

And when that is multiplied by 100 (holes) it begins to make a difference. And reducing resistance and impedance is pretty much the MAIN REASON you're busting your British Ass to make these things in the first place!

My thing is .... if you're gonna do this for the technical advantages this type of distribution system offers, then do all you can to optimize the design ... otherwise why waste the time? (Well, it does look cool as all get out I guess).

(PICS BELOW) Here's this ... just to ponder on. Yes yes yes .... I know I know ... I've posted these images like twenty bazilion times. Don't care .... GAZE UPON IT!! GAZE I SAY!!!

This first one depicts how much spacial volume remains behind the modules after the control connection terminal strips, bus bars, and modules are all installed. This is a nine inch deep cabinet.

The other images depict the bus bars, and the way I came up with providing access to the under-side of the bars so that I was able to use nuts on each cable connector, saving me from having to thread each of the holes, as well as permitting me to use thinner/wider aluminum bars.

All of this stuff is gone over in great detail in my project thread (link in my sig). Includes all of my sources, prices, part numbers, and so on.

thumbs up







ericD13
JohnLRice wrote:
Here's all the ones I can think of at the moment:

http://analogcraftsman.com/?product=acbus#tab-description

http://www.stgsoundlabs.com/products/distro.htm

http://www.groveaudio.com/pds24_mu.html

http://www.oakleysound.com/dizzy-mu.htm

And you could also go with a Hinton busbar system instead:
http://www.hinton-instruments.co.uk/paprod/psu/distribution.htm


You can add Corsynth :

https://corsynth.com/home/modules/c100

It's a very well thought and built full power system
JohnLRice
ericD13 wrote:
JohnLRice wrote:
Here's all the ones I can think of at the moment:

http://analogcraftsman.com/?product=acbus#tab-description

http://www.stgsoundlabs.com/products/distro.htm

http://www.groveaudio.com/pds24_mu.html

http://www.oakleysound.com/dizzy-mu.htm

And you could also go with a Hinton busbar system instead:
http://www.hinton-instruments.co.uk/paprod/psu/distribution.htm


You can add Corsynth :

https://corsynth.com/home/modules/c100

It's a very well thought and built full power system
Is the distribution board sold separately? I couldn't find info on it. hmmm.....
hamildad
Its not 'officially'.

but you know, deals can be made..
Thalassa
As hamildad have said is not officially but I sold a few over the years to people who ask about it.
I have to made one version more DIY oriented thumbs up
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