Shure UNI- DYNE B 15SB-GI8 Datasheet

UNIDIRECTIONAL DYNAMIC MICROPHONES
222 HARTREY
A V E . ,
EVANSTON.
IL.
60204
U. S . A .
AREA CODE 312/866-2200
.
CABLE: SHUREMICRO
TWX: 910-231-0048 TELEX: 72-4381
GENERAL
The Shure Models 515SBG and 515SB-GI8 UNI-
DYNE'? B Microphones are low-impedance units de-
signed specifically for flexible gooseneck application.
The microphones are moving coil units providing good
reproduction of music and voice.
DATA
MODELS 5 1 5 s ~ ~
SHEET
and 515SB-GI8
U N I D Y N E ~ B
These microphones are particularly suitable for use
in language lab systems, paging applications, and
base station communications. They are highly recom-
mended for talkback and cuing from professional
control rooms in TV, film, and recording studios, and
other uses demanding a customized installation with
concealed cables.
i
Features:
True cardioid pickup pattern: symmetrical about
axis and uniform at all frequencies
Response especially effective for announcing,
narration, paging and music
Cartridge shock-mounted for quiet operation
R
Built-in, non-locking, push-to-talk switch con-
trols both microphone circuit and relay or
control circuit
R
Dependability and ruggedness under all oper-
ating conditions
A 457 mm (18 in.) flexible gooseneck and a con-
venient mounting flange supplied with the Model
51 5SB-GI 8
MOUNTING
To mount the 515SBG microphone on a gooseneck
having a
5/8"-27
thread, unscrew black end cap from
microphone (see Figure 1-A), remove adjacent thin
metal washer and one metal spacer from terminating
end of cable. Slide the thin metal washer removed
previously onto cable up into end of microphone. Slip
gooseneck over cable and install into end of micro-
phone.
L 3 7 3
, ,
Dl ,
( 1 - 5 / 3 2 IN1
127/32 IN 1
FIGURE 1-A
159 mm
--- -
476 m m - 1 3m
(6-114 I N )
(18 3/4 IN)
T
- -
L
3 7 3 m m OIA 3 HOLES [ 4 5 m m ( 1 7 7 IN) D l A ]
(1-15/32 I N ) EQUALLY S P A C E D ON
MODEL 515SB-Gi8
159 mm ( 5 / 8 I N ) RADIUS CIRCLE -
OVERALL DIMENSIONS
FIGURE 1-B
Copyright 1980, Shure Brothers
Inc.
27A1489 ( T D )
(OVER)
MODEL 515SB-GI8
CONNECTIONS
The microphones are low impedance for connec-
tion to microphone inputs rated at 19 to 300 ohms.
The balanced line low-impedance connection is rec-
ommended where long cable lengths are required or
under conditions of severe hum disturbance. The
permissible cable length is practically unlimited, since
neither response nor level is appreciably affected.
With reference to Figure 2, BLACK and RED are the
"hot" conductors for balanced line connections to a
low-impedance amplifier, the shield is connected to
the amplifier ground. For unbalanced low-impedance
operation, the shield and RED lead should be con-
nected together. The BLACK lead is then the "hot"
lead. The GREEN and WHITE conductors are used to
control an external relay or control circuit. It should
be noted that hum susceptibility is increased in un-
balanced low-impedance operation.
BUTTON
MOVEMENT
.;-CODED
TERMINAL
GREEN
- - - - - -
- - - - - -
- .
'
B L A C K
,
!
:
RED
&
-------
_ _ _ _ - _
PHASING: POSITIVE PRESSURE ON DIAPHRAGM SHALL
CAUSE A POSITIVE VOLTAGE ON THE RED CONDUCTOR
INTERNAL CONNECTIONS
FllGURE 2
Shure Model A95 Series Line Matching Transformers
are available for use in those cases where a low-imped-
ance microphone line is desirable but the associated
amplifier has a high-impedance input. These trans-
formers provide a proper impedance match between a
19-300 ohm microphone line and a high-impedance
input, and are available with various input and output
connectors.
U.S.
Patents
3,132,713 and 3,240,883
Printed i n U.S.A.