| |
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 |
 view larger |
| 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 |
|
36 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) |