|
BETA
53/WBH53 |
BETA
54/WBH54 |
Specification |
Wired |
Wireless |
Wired |
Wireless |
Type |
Condenser (electret
bias) |
Condenser (electret
bias) |
Frequency
Response |
20Hz to
20KHz |
50Hz to
20KHz |
|
Polar Pattern |
Omnidirectional |
Supercardioid |
Output Noise (equivalent
dBSPL, A-weighted) |
39.0 dB typical;
42.0 dB maximum |
39.0 dB typical;
42.0 dB maximum |
Signal-to-Noise
Ratio |
55 dB at 94 dB
SPL |
55.0 dB at 94
dBSPL |
Recommended Minimum Input
Impedance |
>1 kilohm |
20 kilohms |
>1 kilohm |
20 kilohms |
Preamp Output
Impedance |
136 ohms |
|
136 ohms |
|
Output Level, open circuit,
ref.
1v/Pa at 1 kHz |
-50.0 +/- 3.0dB
3.16mV |
-54.0 +/- 3.0dB
2.0mV |
-52.0 +/- 3.0dB
2.51mV |
-56.0 +/- 3.0dB
1.58mV |
Maximum Sound Pressure
Level |
147 dBSPL at 1% THD/1 kilohm
load |
142 dBSPL at 1% THD/20 kilohm
load |
149 dBSPL at 1% THD/1 kilohm
load |
144 dBSPL at 1% THD/20 kilohm
load |
Dynamic Range |
108 dB (max. SPL with 1k load,
minus
typical A-wt. noise) |
103 dB (max. SPL with 20k
load,
minus typical A-wt. noise) |
110 dB (max. SPL with 1k load,
minus
typical A-wt. noise) |
105 dB (max. SPL with 20k
load,
minus typical A-wt. noise) |
Current Drain |
4.6 mA (preamp and
microphone) |
60-130 microA (microphone
only) |
4.6 mA (preamp and
microphone) |
60-130 microA (microphone
only) |
Output Polarity
Positive pressure on the
diaphragm produces a positive
voltage at: |
Pin 2 relative to pin 3 at the
output
connector of the preamp |
Pin 3 (black lead) relative to
pin 1
(shield lead) at the output connector
of the microphone |
Pin 2 relative to pin 3 at the
output
connector of the preamp |
Pin 3 (black lead) relative to
pin 1
(shield lead) at the output connector
of the microphone |
Power
Requirements |
Phantom power; 11 to 52 Vdc
positive
on pins 2 and 3, return on pin 1 (ground) |
+5 Vdc on pin 2, return on pin 1
(ground) |
Phantom power; 11 to 52 Vdc
positive
on pins 2 and 3, return on pin 1 (ground) |
+5 Vdc on pin 2, return on pin 1
(ground) |
Net Weight |
135.35 g (4.75 oz.)
microphone and in-line preamp |
35.35 g (1.25 oz.)
microphone only |
135.35 g (4.75 oz.)
microphone and in-line preamp |
35.35 g (1.25 oz.)
microphone only |
Cable |
1.5 m (5 ft.),
small-diameter, shielded, with mini 4-pin connector
(TA4F) |