Eurorack Distribution Bus Board V2 - More BIGGER Moar BETTER!
Finally a power distribution to match our high performance linear PSU.
Introducing the Bus Bar Board (NEW AND IMPROVED FOR 2019)
The Bus Bar Board is a passive modular power distribution solution that combines the proven performance of industrial grade power components with the convenience of plug and play connectivity to your existing synth hardware.
Unless you're also ordering a PSU, Distribution Boards do not come with wires for connecting to a power supply. We recommend using 10~14AWG wire for connecting the +12/-12/GND buses to your power supply.
Read the full requirements and installation instructions here.
- Lower common impedance than any other PCB distribution.
- Star-ground and power layouts provide excellent isolation between modules reducing crosstalk.
- Low ESR bypass capacitor network, dedicated 1µF caps on each +12V and -12V pin per each output header.
- Easy installation for optimizing performance in large systems with multiple PSU's. (Guide)
- Shrouded 16 pin headers with options for vertical or right angle. You asked and we delivered.
- Modular design is adaptable to systems of any size. 2+ PCB's can be installed on a single set of rails, providing the absolute lowest impedance, even on the largest systems.
- Gate, CV, +5V connections via 3-pos screw type terminal block (Accepts 12-28AWG solid or stranded wire).
- Worst case resistance for +12V and -12V bus (single board): 131.27µΩ
(That's 0.000131 ohms, in laymen's terms that's very VERY small).
- Worst case 0V common resistance: 117.465µΩ (0.000117 ohms)
- Assembled in the US ...in small batches by skilled artisans working under the light of a super bloodmoon in the mountains of Asheville, NC, using 100% vegan and gluten free components.
+12V, -12V and GND are delivered via dedicated quarter inch square rods of 6061 T6 aluminum.
This aluminum is not tin plated, so it does form oxides in contact with air. However this is not a problem; during assembly the aluminum is cleaned and a special jointing compound is applied which inhibits oxide formation. Further, the clamping pressure between the aluminum, lug and clamping screw is sufficient for an airtight seal at the mating surfaces.
From this the theoretical maximum resistance (from one end of the PCB to the other) for each of the three rails is calculated as:
R_max = ρ * L / A Where L is the effective length of the bus bars (5.21in)
and A is the cross sectional area of the bus bars (0.25in * 0.25in = 0.0625in^2)
R_max = 0.00013127Ω = 131.27µΩ
That's 131.27 micro ohms, or equivalently 0.1313 milli-ohms, and this represents the maximum common resistance of the +12V and -12V buses on a single board.
And for the 0V bus the situation is even better! Because the PCB itself contains a ground plane of 2oz copper with a minimum trace width of 30.62mm. This is parallel to the 0V bus bar for a combined, worst case, common 0V resistance of 117.465µΩ!
To achieve the same performance, a traditional bus board designed with 2oz thick copper layers would require two ground plane layers each with a continuous trace width of over 5 inches! To put it plainly, copper foils on PCB substrate simply can't compete with big ol' solid bars of metal for providing high current, low impedance connections.