Beyerdynamic M 88 Instrucciones De Uso página 4

M 88 — Dynamic Moving-Coil Microphone
TECHNICAL SPECIFICATIONS
Transducer type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dynamic
Operating principle . . . . . . . . . . . . . . . . . . . Pressure gradient
Polar pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Hypercardioid
Frequency response . . . . . . . . . . . . . . . . . . . . . . . 30 - 20,000 Hz
Rear attenuation at 1 kHz . . . . . . . . . . . . . . . . . . > 23 dB at 120°
Sensitivity (0 dB = 1 V/Pa) . . . . . . . . . . . . . 2 . 9 mV/Pa (= -51 dBV)
Magnetic field suppression . . . . . . . . . . . . . > 20 dB at 50 Hz
Nominal impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 Ω
Load impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≥ 1000 Ω
FREQUENCY RESPONSE & POLAR PATTERN
This polar pattern and frequency response curve correspond to a typical production sample for this microphone .
Sollfrequenzkurve ±2, 5dB
Frequency response curve ± 2 .5 dB
+20
2cm Abstand
Distance 2 cm
+10
10cm Abstand
Distance 10 cm
0 dB
1m Abstand
Distance 1 m
-10
-----
Sollfrequenzkurve ±2, 5dB
-20
+20
2cm Abstand
+10
--
-30
10cm Abstand
0 dB
20 50
1m Abstand
-10
-20
-30
20 50 100 200
330°
300°
270°
125 Hz
250 Hz
240°
500 Hz
1000 Hz
210°
+
125 Hz
+
250 Hz
500 Hz
1000 Hz
+
-----
--
M 8 8
0 dB = 2, 9mV/Pa
100 200 500
500 1k 2k 5k 10k
330°
0°
30°
-5dB
-10dB
60°
300°
-15dB
-20dB
90°
120°
270°
150°
180°
240°
210°
+
Diaphragm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hostaphan®
Casing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Brass
Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XLR, 3-pin, male
Dimensions:
Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 mm
Shaft diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 .5 mm
Head diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 .5 mm
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .331 g
M 8 8
M 88
1k 2k
0°
20k Hz
30°
WIRING DIAGRAM
-5dB
Polarity: Positive pressure produces
-10dB
positive voltage on red lead (pin 2) .
-15dB
-20dB
2000 Hz
4000 Hz
8000 Hz
150°
180°
0 dB = 2, 9mV/Pa
0 dB = 2 . 9 mV/Pa
5k 10k 20k
60°
ws
3
1
90°
2
rt
120°
2000 Hz
4000 Hz
8000 Hz
4
Hz