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GENERAL
The MX1BP is a battery-powered preamplifier d esigned to be
used with Microflex
â
or other condenser microphones. It allow s use
of these microphones in situations w here phantom power is not
available.
FEATURES
·
4-pin mini connector allows use with a variety of condenser
microphones
· PowerLED Indicatorindicatespower statustothepreampli-
fier
· Mute/On switch attenuates microphone without turning off
preamplifier
· Belt clip allows mobility while using lavalier and headsetmi-
crophones
· Preamplifier operates on 9 V battery or phantom power
· Features 3.7 m (12 ft) cord with attached male XLR
connector
BATTERY INSTALLATION
-- +
1. Move the Mic Mute/On switch on preamplifier to the Mute
position.
2. Press down on the OPEN side of the battery compartment
cover, slide it back and flip it open.
3. Insert a9 Vbattery asshown, observingproper battery polar-
ity (“+/--”). Close the battery compartment cover.
4. Move the Mic Mute/On switch on the preamplifier to the On
position when ready to use the unit.
NOTE: A minimal power drain occurs while the 9 V battery is
installed. To conserve battery life, remove the battery when
preamplifier is not in use.
OPERATION
1
2
3
1) Mic Mute/On Switch
2) 4--Pin Mini Connector
3) Power LED Indicator
MUTE ON
POWER
MIC
1. With the Mic Mute/On switch in the Mute position, plug the mi-
crophone into the preamplifier’s 4--pin mini connector. (NOTE:
The Power LED Indicator will remain lit in both the Mute and On
microphone modes.)
2. Plug the XLR cable from the preamplifier into the respective
audio device microphone input.
3. Switch the Mic Mute/On switch to the On position.
4. Adjust the gain level of the audio input device, if necessary.
INTERNAL HIGH-PASS FILTER
An internalhigh-pass filteris featuredin theMX1BP. It isjump-
er selectable and allows the user to alter the low frequency re-
sponse of the unit. For information on how to adjust this feature,
please call(800) 488-3297 andfollow therecorded directionsfor
technicaldata byfax. Foradditional technicalassistance,phone
Shure at (847) 866-2200. In Europe, phone 49-7131-72140.
USE WITH PHANTOM POWER
The MX1BP can also be used in situations where phantom
power is available.
Phantom power may be applied with a 9 V battery in place or
removed. With the battery installed, the MX1BP will silently and
automaticallyswitch tothe batteryreserve should phantompow-
erfail.Battery depletionwill notoccurwhilephantompoweris ap-
plied.
GENERAL SPECIFICATIONS
Signal to Noise Ratio
61.0 dB
(Referenced at 94dB SPL w/ Cardioid Microflex
R
cartridge, at 1 kHz
with1kW load)
(FactorySetting:25Hzwitha6dBperoctaverolloff.)
Selectable Rolloff Frequency
100 Hz, w ith a 1 2 dB per octave rolloff below this corner
frequency.
Dynamic Range (at 1 kHz with 1 kW load)
106.5 dB
Common Mode Rejection
45 dB minimum, 10 Hz to 100 kHz
Dimensions (Figure 1)
84.3 mm H x 65.2 mm W x 25.7 mm D (3.32” H x 2 .57” W
x 1.01” D)
Net Weight
255 g (9 oz.) with attached cabling.
Battery Life (nominal)
600 continuous hours with 9 V alkaline battery
Power Requirements
9 V alkaline battery (Duracell
â
MN1604 recommended; 8.4
V NiCd rechargeable battery or 9 V Ultralife
â
lithium battery
optional); with phantom power, 10 V to 52V dc.
Battery Current (nominal)
0.8 mA
Model MX1BP User Guide
27C3026 (CD)
ã2003, Shure Incorporated
PrintedinU.S.A.