Preamp Gain; Specifications - Shure Microflex MX405 Manual

Button Configuration
For logic control operation, DIP Switch 1 determines the button be-
havior (DIP Switch 2 has no effect).
Button Behavior
Momentary: When pushed, SWITCH OUT
(red wire) falls to 0 V. When released,
SWITCH OUT returns to +5 V.
Toggle: Push and release sets SWITCH
OUT to 0 V. Push again to toggle back to
+5 V.
Controlling the LED Using Logic LED IN
When configured for logic mute control, connect the LED IN con-
ductors to an external switch, relay, or a TTL gate (gate out) on an
automatic mixer. The MX400DB contains an internal pull-up resis-
tor circuit.
• The LED illuminates green/red when the MX396 LED IN is
grounded (orange wire connected to the green wire).
• The LED illuminates red/off when LED IN is lifted (orange wire
is NOT connected to the green wire).

Preamp Gain

If necessary, the preamplifier gain can be reduced by 12 dB.
Contact an authorized Shure service center for information.

Specifications

Cartridge Type
Electret Condenser
Frequency Response
50–17000 Hz
Polar Pattern
MX405/C, MX410/C, MX415/C
MX405/S, MX410/S, MX415/S
Output Impedance
170 Ω
Output Configuration
Active Balanced
Sensitivity
@ 1 kHz, open circuit voltage
DIP Switch Setting
Cardioid
Supercardioid
1 Pa=94 dB SPL
Maximum SPL
1 kHz at 1% THD, 1 kΩ load
Cardioid
Supercardioid
Equivalent Output Noise
A-weighted
Cardioid
Supercardioid
Signal-to-Noise Ratio
Ref. 94 dB SPL at 1 kHz
Cardioid
Supercardioid
Dynamic Range
1 kΩ load, @ 1 kHz
93 dB
Common Mode Rejection
10 to 100,000 kHz
45 dB, minimum
Preamplifier Output Clipping Level
at 1% THD
−8 dBV (0.4 V)
Polarity
3-pin XLR
5-pin XLR
Cardioid
Net Weight
Supercardioid
MX405
MX410
MX415
MX400DP
MX400SMP
−35 dBV/Pa (18 mV)
−34 dBV/Pa (21 mV)
121 dB
120 dB
28 dB SPL
27 dB SPL
66 dB
68 dB
Positive sound pressure on diaphragm produces
positive voltage on pin 2 relative to pin 3 of out-
put XLR connector
Positive sound pressure on diaphragm produces
positive voltage on pin 4 relative to pin 2 of out-
put XLR connector
0.054 kg (0.119 lbs)
0.068 kg (0.150 lbs)
0.07 kg (0.154 lbs)
0.516 kg (1.138 lbs)
0.125 kg (0.275 lbs)
Logic Connections
LED IN Active low (≤1.0V), TTL compatible. Absolute
maximum voltage: -0.7V to 50V.
LOGIC OUT Active low (≤1.0V), sinks up to 20mA, TTL com-
patible. Absolute maximum voltage: -0.7V to 50V
(up to 50V through 3kΩ).
Mute Switch Attenuation
-50 dB minimum
Cable
MX400DP
6.1 m (20 ft) attached cable with shielded audio pair terminated
at a 3-pin male XLR and three unterminated conductors for logic
control
Environmental Conditions
Operating Temperature
Storage Temperature
Relative Humidity
Power Requirements
Phantom Power
48–52 V DC, 8.0 mA
–18–57°C (0–135°F)
–29–74°C (–20–165°F)
0–95%
5