Quantum Composers 9732 Parallel Configuration - Manual (Page 3)

Limitations:
Due to internal power supply limitations, the total current may not exceed 12A regardless of the load’s
impedance.
If the channels are wired in parallel, only the current output has the opportunity to increase as the bank voltage
will remain constant (~19V Compliance). In this scenario, the available voltage will be further decreased due to
the inherent voltage drop from the blocking diodes; thus, it is highly recommended that a diode be used with a
small forward voltage rating (see above for suggested diodes).
Example: A total load impedance of 4 Ω is being placed at the output of CHA & CHB in parallel. If blocking
diodes are used with a forward voltage rating of 0.7V, what is the maximum current allow by the unit?
1) The compliance voltage will be approximately:
V = (19V – [2 * 0.7V]) = 17.6V.
2) The maximum allowable current by each individual channel would be:
I ≤ 17.6V/4 Ω  I ≤ 4.4 Amps
3) The maximum allowable current by the unit in the parallel configuration:
I ≤ 2*(4.4 Amps)  I ≤ 8.8 Amps