Invotone SM150B User Manual [ru]

BROADCASTING AND RECORDING

MICROPHONES

INVOTONE SM150B is a cardioid polar pattern condenser
microphones, excellent for broadcasting, recording or theater stage
sound systems and other professional sound applications. The
single large vapor-deposited gold diaphragm with exceptionally low
self-noise and very high output, provides accurate reproduction of
even the subtlest sounds, especially the high frequency signals not
easily reproduced by conventional large diaphragm condenser
transducers.

A switchable 10dB built-in (nominal) pad and low frequency
attenuation can handle very high sound pressure levels with ease
and reduce the pickup of low-frequency ambient noise (i.e. On stage
shows). It also allows undistorted reproduction of high sound
pressure level signals at all frequencies, which makes it an ideal
choice for percussion and guitar recording.

The integrated three-layer brassed mesh grille protects the
microphone from accidental damage and reduces plosives and
breath noise. Its standard XLR (F) connector matches all kinds of
audio equipment.

Specification:

Element: Pressure Gradient Transducer
Polar Pattern: Uni-directional
Frequency Response: 20Hz-20kHz
Sensitivity: 38dB±2dB (0dB=1V/Pa at 1kHz)
Output Impedance: 100Ω±30% (at 1kHz)
Load Impedance: ≥1000Ω
Self Noise: 18dB A (IEC 581-5)
Max. Input SPL: 134dB (at 1kHz ≤1% T.H.D)
S/N Ratio: 76dB
Phantom Power Requirement: 48V Phantom Power

Frequency Response Graph:

-30

-40

-50

-60

(dBV/Pa)

-70

20 2K 20K50 100 200 500 1K 5K

(Hz)

Frequency Response Graph

330

300

270

240

210

180

Uni-directional

(at 1kHz)

0

30

60

90

120

150

Connecting And Disconnecting The Microphone
Cable:

1. Insert the XLR connector into the microphone. If necessary,

rotate the connector to align the key on the connector and the
groove in the microphone. Push the connector into the
microphone until it clicks.

2. To disconnect the cable and microphone, grasp the connector
while depressing the tab. Pull the connector away from the
microphone.

Operation:

PHANTOM POWER

VOICE AMPLIFIER,
MIXER,
POWER AMPLIFIER

SUPPLIER

SM-10B 0 -10dB

XLRMXLRF

XLRF

How To Use Switch:

SM150B

A B

A. Low frequency attenuation:

"-" no attenuation;
"┌" it can balance the low frequency rising effect of short
distance pickup and reduce the feedback as well as protect

from howling;

B. Sensitivity attenuation:

"0" no attenuation;

"-10dB" it fixes the sensitivity on -10dB level, shortens the

pickup distance, eliminates the noise: this function is usually
used for high SPL and large dynamic pickup occasions (i.e. the
pickup of low frequencies instruments of symphony orchestra);

Usage:

1. Turn on the amplifier or mixing board and set the volume control
to minimum position. To connect the phantom power to the
microphone turn on the phantom switch, and then accommodate
the volume control from low to the required are so as to obtain
the desired effect.

2. If the head of the microphone is covered by hand or brought
close to the speaker, a howling sound may be generated. To
prevent this, first decrease the volume, then place the
microphone so that it is not pointed to the speaker and that there
is a sufficient distance between the microphone and speaker.

3. The cartridge is very sensitive. Don’t do drop, hit it or apply any
strong shock to it.

4. To maintain the sensitivity and quality of the sound reproducing,

avoid exposing it to moisture and extreme temperatures.