Case Power Manual
Thank you for purchasing a Synthrotek Case Power! It is very important to read through the entire manual before making any connections or powering it on.
Table of Contents:
Case Power is a marriage of the 5A Power Supply System (now further regulating the +12V rail) and the Noise Filtering Distribution board, resulting in a love child called Case Power. It is safe, clean, quiet, and will power small and large Eurorack systems. Connecting Case Power to your current bus board system is easy with molex or spade connectors. We have 3U or 1U power entry panels available, but Case power does not have to take up valuable HP space; you can wire a jack, LED and switch into your case and easily attach them to the board.
Case Power / Super Power Output Options
Maximum current draw per rail
+12V @ 3A
-12V @ 2.5A
+5V @ 1.5A
+12V @ 3A
-12V @ 1.3A
+5V @ 1.5A
+12V @ 2A
-12V @ 500mA
+5V @ 1.5A
If you are wondering how much power your modules will need, check out http://www.modulargrid.net. ModularGrid lets you create a virtual “case” with all your modules in it and will add up the power consumption of your modules. Bear in mind that since there is no standardized system for calculating the current draw of modules, some modules may draw more power than modular manufacturers and contributors specify. This power supply has been thoroughly tested to provide the full amount of power described.
Common sense precautions
Note: Unplug your power brick before connecting any wiring or distribution/bus boards.
Attention: The molex connector and spade connectors on the Case Power are only for connecting to a distribution board(s). DO NOT connect a Case Power to another Case Power, Deluxe Power or Super Power via the molex connector or spade connectors. This WILL damage the power converters and void your warranty.
For instructions on Power Panel wiring and wiring your Case Power into your case, please see the Assembly Instructions.
Connecting your Case Power to Noise Filtering Power Distribution Boards:
It’s important to check whether your wiring is correct before plugging any modules into your Case Power, so first plug it in and turn it on by itself. If all 3 LEDs light up on the board, you’re ok to start plugging modules in. If not, double check your wiring against the diagram shown here in the manual and in the assembly instructions.
Please note: Do not plug in modules while your Case Power is turned on (“hot swapping”). This can damage a module.
Case Power uses keyed shrouded connections, making it simple and safe to plug in your modules. The “key” on a power cable is a little bump on the plastic end. “Shrouded” connections have walls around the connection pins but an opening on one side of the wall for the key. If you are using a keyed power cable, you won’t be able to plug in your module backwards, you won’t accidentally miss pins and you it’s significantly less likely that you will bend any pins. This is especially useful when you have to reach inside your case and can’t easily see which way you should plug your module in.
If you have an unkeyed power cable, align the red or blue stripe on your power cable with the STRIPE callout on the Case Power.
Putting together a massive system? Case Power was designed so that two of them can be daisy-chained to each other with only one power input.
Synthrotek does not supply the parts for this. Whichever components you select, make sure that they are rated for and can handle the maximum current draw.
For example, if you have two Case Powers with +12V @ 3A, -12V @ 2.5A, and +5V @ 1.5A, you should use a 180W power supply brick. You will need a power brick, wire, and a jack that can handle 180W. The jack and LED are not necessary to power the circuit, but if you chose to use these, they would also need to handle 180W.
Synthrotek does not recommend or supply any of the parts you will need to daisy chain two Case Powers.
Important: Do not use Synthrotek’s No-Panel Kit when daisy-chaining power together. The parts are rated only for use with a single Case Power. Powering two Case Powers with these components could start a fire.
Q: Will Case Power work internationally with a 240V input?
A: Yes. You will need a power brick that can convert 240V. The 90W Power Supply that Synthrotek offers will work fine, but you may need an adapter to plug it into the wall. Just make sure that the power brick you use is center positive and provides 90W at 16 to 19V.
Q: I think I may be having an inrush current problem. Is there a way to know for sure?
A: When modules are initially powered on, they may draw considerably more current than they normally do for a split second. This is called inrush current draw or startup current draw. Module manufacturers list the maximum operating current draw, but not inrush current draw. If you are not currently using your full power output but your power shuts off automatically when you turn it on, you may have a module with an high inrush current.
Any module can potentially do this: oscillators, touchables, even output mixers. To figure out which module is the culprit, you will need to turn off your power supply, unplug a module (one at a time), then turn it back on. Keep doing this until you have found the troublesome module.
If you are having trouble with inrush current, you are already on the verge of using the full amount of power that the power supply can handle and may need to add an additional power supply.
Q: I hear electrical interference/unwanted noise coming through my modular setup. How can I reduce this?
A: Unwanted noise can come from a number of sources, such as a noisy module or your building’s electrical system.
Check for line noise:
Check for module noise:
More questions? Get a hold of us here: