Shure 404B Datasheet

CONTROLLED MAGNETIC' HAND-HELD MICROPHONES
222
H A R T R E Y A V E N U E
SMU-
@ E V A N S T O N . ILLINOIS 6 0 2 0 2 - 3 6 9 6 U.S.A.
THE SOUND OF THE PROFESSIONALSS WORLDWIDE
MICROPHONES AND ELECTRONIC COMPONENTS
J
GENERAL
Model 404 Series hand-held communications micro-
phones are compact size, CONTROLLED MAGNETIC@
units designed for clear, crisp, natural voice response
of high intelligibility.
Microphone Features:
Frequency response from 200 to 4,000 Hz espe-
cially suitable for voice communications use
Small, light and compact case, fits naturally and
comfortably in the palm of the hand
=
Extremely sturdy, high impact, ARMO-DURB case,
lighter and stronger than die-cast metal, comfort-
able to the touch in hot or cold weather
DATA SHEET
MODELS 404B AND 404C
Heavy-duty, long-life, leaf-type push-to-talk switch
Extra contact provided on switch for modification
to either normally shorted or normally open micro-
phone circuit
Durable rubber-jacketed coil cable
D
Rugged and dependable under all operating con-
ditions
APPLICATIONS
The Model 404 Series microphones are especially
recommended for indoor and outdoor paging systems,
all types of mobile communications, amateur radio,
and all other applications where a rugged hand-held
microphone is needed. The microphones are also suit-
able for indoor and outdoor public address.
Model 404C is a high-impedance microphone with
high output level, making it suitable for connection to
high-impedance amplifier inputs when cable lengths
of 15.2m (50 ft) or less are needed.
Model 4048 is a low-impedance microphone and is
recommended when long cable lengths are required
or under conditions where severe hum pickup may
exist. The Model 4048 may be connected directly to
the input of
a
low-impedance amplifier, or a Shure
Model A95 Series Line Matching Transformer may be
used for connecting the Model 4048 to the input of a
high-impedance amplifier.
The 404 series microphones will replace certain
Shure 405 and 505 series microphones. Listed below
are CONTROLLED MAGNETIC communication micro-
phones and recommended replacement.
MOUNTING
A mounting bracket for permanent installation is
supplied with each microphone. (See Figure 1)
Model No.
CR4B, 4058, 5058
CR4C, 405C, 505C
MOUNTING HOLES,
CLEARANCE FOR
N o .
8 SCREWS
7
Shure Replacement Microphone
4048
404C
46 mm
(C13/16 IN.)
10.3 mm
(13/32 IN.)
36.5 mm
(1-7116 IN.)
-
4.7
mm (3/16 IN.)
J
/ l ~
mm
t
34.5 mm
4
(3/8 IN.) c(l-23/64
INI
MOUNTING BRACKET
FIGURE 1
CONNECTIONS
The internal switch connections of Models 4048 and
404C are shown in Figure 2.
MODEL 404B MODEL 404C
INTERNAL CONNECTIONS
FIGURE 2
Copyright 1990, Shure Brothers
Inc
27A179 (JA)
Printed in U.S.A.