Informasjon
Småmembran kondensatormikrofon. Ypperlig for kor, overhead, hihat m.m.
variety of instruments and provides a natural sound reproduction.
The instrument microphone is ideal for both live performance and studio recording
settings. With an ultra-thin diaphragm, the SM137 delivers smooth high ends with
controlled low ends, both with quick responses. A 15db pad allows for use around
high sound pressure levels, with the condenser mic also featuring low self noise
and a transformerless design. Instruments that may be miked up include acoustic
guitars, cymbals, string instruments, piano and many more.
Included with the SM137 is a swivel adapter and zippered pouch for easy storage
and transport.
Spesifikasjoner
Cartridge Type
Permanently Biased Condenser
Frequency Response
20 to 20,000 Hz
Directional Polar Pattern
Cardioid
Output Impedance
150 ohms (actual)
Attenuation Switch
0 dB or 15 dB attenuation
Phantom Power
48 Vdc +/- 4 Vdc
(IEC-268-15/DIN 45 596), positive pins 2 and 3
Current Drain
5.2 mA typical at 48 Vdc
Common Mode Rejection
>50 dB, 20 Hz to 20 kHz
Polarity
Positive pressure on diaphragm produces positive voltage on output pin 2 relative to pin 3
Dimensions and Weight
24 mm (0.950 in.) diameter
162 mm (6.375 in.) long
195 grams (6.9 oz.)
Sensitivity (typical, at 1000 Hz; 1 Pa = 94 dB SPL)
-41 dBV/Pa
Self-noise (typical, equivalent SPL; A-weighted (IEC 651))
19 dB
Maximum SPL@ 1000 Hz
5000 ohms load (Attenuator on): 150 (165 dB)
2500 ohms load (Attenuator on): 144 (159) dB
1000 ohms load (Attenuator on): 139 (154 dB)
Output Clipping Level*
5000 ohms load: 15 dBV
2500 ohms load: 9 dBV>
1000 ohms load: 3 dBV
*20 Hz to 20 kHz; THD < 1%. THD of the microphone preamplifier when applied input signal is equivalent to the cartridge output at specified SPL.
Dynamic Range (Attenuator On)
5000 ohms load: 133 (136) dB
2500 ohms load: 128 (130 dB)
1000 ohms load: 122 (125) dB
Signal to Noise Ratio**
75 dB
**S/N ratio is difference between 94 dB SPL and equivalent SPL of self-noise A-weighted.
