Specifications – AKG Acoustics WMS81 User Manual
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Specifications
PT61 bodypack transmitter:
Audio bandwidth:
50 Hz to 20 kHz
Modulation method:
FM
Radiated RF power:
10 mW
Frequency stability:
±10 ppm
Antenna:
Flexible, quarter-wave wire
Rated deviation:
±30 kHz
Signal-to-noise ratio:
Typical 50 dB (A weighted)
Input impedance:
220 kohms, 600 pF
Audio input:
Mini 3-pin XLR; 1400 mV for rated
deviation at 1 kHz
Phantom powering:
Pin 3: 6 V/6k8 ohms
Current consumption:
170 mA/2.4 V
Power requirement:
2 AA 1.5V batteries
Battery life:
>10 hours
Dimensions:
3.62 x 2.56 x 0.79 in.
(92 x 65 x 20 mm )
Net weight:
3.04 oz. (76 g) without batteries
HT 61 handheld transmitter:
Type, bandwidth and
See individual microphone
polar pattern:
specification sheets
Modulation type:
FM
RF radiated power:
10 mW
Rated deviation:
±30 kHz
Signal-to-noise ratio:
Typical 50 dB (A-weighted)
Current consumption:
<150 mA/2.4 V
Power requirement:
2 AA size 1.5V batteries
Battery life:
>12 hours
Dimensions:
1.4 x 9.4 in.
(36 mm dia. x 240 mm)
Net weight:
9.8 oz. (245 g)
SR61 receiver:
Receiver type:
Diversity
Antenna inputs:
2 x 50-ohm BNC sockets
Modulation type:
FM
Input sensitivity:
Typical -95 dBm
Squelch threshold:
Automatic, using pilot tone
(32.678 kHz)
Audio bandwidth:
50 to 20 kHz
THD at 1 kHz:
<0.4% at rated deviation
Signal-to-noise
Typical 100 dB (A-weighted)
Audio output:
Balanced XLR-M, mic/line level
switchable, typical 30 dB
unbalanced: 1.4” jack: 0 dBm
XLR: 6 dBm
Current consumption:
220 mA typical
Power requirement:
11 to 15 V dc or ac from external
power supply
Dimensions:
8.27 x 6.7 x 1.65 in.
(210 x 170 x 42 mm)
Net weight:
18.8 oz. (470 g)
Accessories:
PS61:
Active, wideband antenna splitter for
connecting up to 4 SR61 units or
3 SR61 units and one additional PS.
RA61B:
External receiver antenna with
integrated booster, powered via
cable from the PS61 antenna splitter.
PSU01:
Central power supply unit for PS61 and
PS81 splitters.
SRA-1:
External directional antenna
CCS-1:
Color code indicators for easy channel
recognition.
Hard Case CH 60:
For carrying a single complete
system
UAM1:
Universal antenna mount for moving
the antennas for 1 receiver to the
front of the rack.