ADDAC901M 15U Monster Frame

ADDAC901M – 15U  1M Powered Monster Frame

Eurorack Format 15U Plug n'Play Frame
Includes busboards, power supply and AC cable.
Ships Assembled.

197HP per Row
985 Total
Compatible with M3 screws

2 Leds located in the bottom right show ±12V power status.

Made in Aluminium with sidings in 18mm Poplar Plywood with Wenge Veneer
[All frames now ship with Black Rails]

Row depths:
- minimum: 6cm (bottom row)
- maximum: 12.5cm (3rd row)

Overall dimensions:
- Width: 104 cm
- Height: 58 cm
- Depth: 46 cm

Weight:
- 16Kg

Power Specifications:
- Input: 110v to 220v  
- Output: ±12V
- Current: 15A (15000mA) for each rail (not shared).
- 10x busboards with 19 connectors each
- +5V available on all busboards (Draws from +12V, 500mA per busboard)
 
Estimated Shipping Costs:
Within EU: 240€
USA/CAN: 370€
JP/AU: 591€

Note: All specifications and features are subject to change without previous notice.

Remarks on current consumption

Current consumption on a PSU is not a simple, straightforward subject.

PSU's will show a small voltage drop as current increases, which will drastically increase when pushed close to its limits. Heat will also influence this drop. Heat is related to the current drawn: as more current is being drawn, more heat will build up on the PSU; heat conditions will reduce the maximum amount of current that can be delivered by the PSU. While the current consumption drop is somewhat stable and immediate (as you turn the frame on the current consumption will stabilize in a few seconds), the heat drop will take some time to occur; heat will build up over time until it stabilizes and only if it has enough “headroom” to stabilize. If heat dissipation is not effective then the drop will continue until it reaches a balance point which can be several volts below our 12V reference. At this point your PSU will be under great stress and the heat generated is prone to leave some permanent scars.

Heat will start to have an impact at about a temperature of 50 degrees Celsius. At 80 degrees the maximum current rating will drop by about 50%. If your PSU is rated at 2A maximum and it’s running at above 80 degrees then it will only be able to deliver about 1A maximum.
For the PSU this is a complex balancing act as current influences heat and heat influences the maximum amount of current available, which all together influence the voltage drop.

This is why it’s so important to keep the PSU load at a sensible level.

System's current consumption and inrush current

Most users calculate their current consumption according to the specs shown on Modular Grid. Although this value may be close to reality there's a detail that is commonly overlooked: power-on inrush current. This happens whenever the user turns on any frame. At startup all modules will try to draw power at the same time, this will create a current peak that will inevitably be greater than the Modular Grid calculated consumption.

If the system's current is running too close to the PSU limit this initial inrush current will trip the PSU protection and the frame will not turn on. 

ADDAC System's PSU protections

All our PSU's are AC to DC converters with shutdown protection for:
Over Current - when maximum current is exceeded (for when a module ribbon cable is reversed)
Over Heating - if the AC Brick is over heating
Over Voltage - if the voltage changes above or below the expected output

If one of these issues happens then the PSU will enter an intermittent ON/OFF state until the issue is corrected.

These safety protections will prevent damage to your PSU and consequentially to the modules as well.

Thanks for your interest in the ADDAC901M 15U!

To proceed with a direct purchase, you may fill out the form on our Orders Page.

If you want to obtain it through a shop closer to you, this is our Distributors Page.

I just received my frame, powered it without Modules and there is a very audible noise coming from the PSU‘s, is this normal?
 
The noise will totally go away once you fill your Monster Frame with Modules.
 
It's also a good practice not to power the frame until at least 5-10% of PSU power is being consumed.  In case of the standard ±10A PSU's then at least 500-1000mA on each rail.