Active balanced, 10k ohms, ISO™ Input
Active push-pull, 600 ohm drive
+20 dBv
+26 dBv
-90 dBv (“A” weighted)
120 dB
800 Hz
RMS, peak and excursion limiters
RMS, peak and excursion limiters
Peak limiter
Power/Ready LED
High and Low Sense LED’s
VHF, HF and LF Limit LED’s
Safe LED
Standby/On switch
VHF Cal/Music switch
Safe/AutoSafe switch
Input Attenuation (calibrated in dB)
3-pin XLR-type female, front panel mounted
3-pin XLR-type male, front panel mounted
3-pin XLR-type male, rear panel mounted
Dual banana receptacles, rear panel mounted
M-10A Control Electronics Unit
Input Type
Output Type
Maximum Input/Output Level
Unbalanced
Balanced
Hum and Noise
Dynamic Range
Electronic Crossover Frequency
Driver Protection Circuits
Low Frequency
High Frequency
VHF
Indicators
Controls
Connectors
Input
Loop Out
Hi and Lo Output
Sense
Power Requirement
Mains AC Voltage Source
Maximum Power Consumption
Maximum Continuous RMS Current
1
Peak Instantaneous Operating Current
2
Peak Inrush (Turn-On) Current
3
Cold
Hot
Idle Current
4
200 – 260 VAC, 50 A, 50/60 Hz
8700 VA
38 A rms (Power factor
≈
.93 lagging)
94 A peak
240 A peak
360 A peak
9 A rms
Notes:
1. Current waveform is non-
sinusoidal, so the RMS
current rating applies only
to power consumption
and heating from the
source. The peak current
rating must be considered
when determining I
2
R
losses in power cable.
Peak losses will lower the
internal power supply
voltages linearly.
2. One AC cycle.
3. Inrush current due to
magnetization, <40 ms ␣␣␣
(2 cycles).
4. Environmental heaters on.
AC Interfacing and Protection
The MSL-10A Rack System requires a
single-phase AC voltage source wired
between the øX and øY terminals of the
Rack System AC inlet, with earth ground as
a chassis safety connection. It may be
interfaced to virtually any delta or wye
source configuration, with the Rack øX and
øY connected to any two source terminals
that yield 200~260 VAC; multiple racks
may be connected to different phases of a
polyphase source to distribute the load. The
maximum safe isolation voltage between
øX or øY and earth is 480 VAC.
The AC inlet is protected with a 50 A,
250 V switch-type magnetic circuit breaker
which is CSA, VDE and UL approved (UL
Code “A”) and is located on the front of the
I/O Panel. Power distribution to each
amplifier is individually protected with a
two-pole, 20 A, 250 V switch-type breaker
located on the rear panel. The environmen-
tal power and M-10A CEU share a single 20
A, 250 V breaker, also located on the rear
panel.
