Shure MX1BP - Manual

GENERAL

The MX1BP is a battery-powered preamplifier designed to be

used with Microflex

â

or other condenser microphones. It allows use

of these microphones in situations where phantom power is not

available.

FEATURES

·

4-pin mini connector allows use with a variety of condenser

microphones

·

Power LED Indicator indicates power status to the preampli-

fier

·

Mute/On switch attenuates microphone without turning off

preamplifier

·

Belt clip allows mobility while using lavalier and headset mi-

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 a 9 V battery as shown, observing proper 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 internal high-pass filter is featured in the MX1BP. It is jump-

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 and follow the recorded directions for

technical data by fax. For additional technical assistance, 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

automatically switch to the battery reserve should phantom pow-

er fail. Battery depletion will not occur while phantom power is ap-

plied.

GENERAL SPECIFICATIONS

Signal to Noise Ratio

61.0 dB

(Referenced at 94dB SPL w/ Cardioid Microflex

R

cartridge, at 1 kHz

with 1 k

W

load)

(Factory Setting: 25 Hz with a 6 dB per octave rolloff.)

Selectable Rolloff Frequency

100 Hz, with a 12 dB per octave rolloff below this corner

frequency.

Dynamic Range (at 1 kHz with 1 k

W

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)

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2003, Shure Incorporated

Printed in U.S.A.