Shure 588SD User manual

GENERAL
The Model 588SD Unisphere Microphone is a ball-
type dual-impedance, cardioid(unidirectional) dynamic
unit that provides excellent reproduction of voice and
music. Its spherical grille is a very effective wind and
pop filter especially good when used for closeup vocal
miking. This microphone is highly suited for speech or
music pickupinschools, churches, and meeting rooms,
and for sound reinforcement, broadcast,or recording of
small musical groups. Its unidirectional polar pattern
greatly reduces feedback problems, permitting opera-
tion closer than usual to loudspeakers without the an-
noying squeal or howl caused by feedback.
The microphone is equipped with a combination
OnlOff and Im~edance-Selectionswitch with a
lockplate preven'ting inadvertent switching to the
undesired impedance. A slip-in swivel adapter is sup-
plied for the convenience of either handheld or stand-
mounted use. The microphone is supplied without a
cable, packaged as Model 588SD-LC.
Microphone Features:
Wide frequency response designed for faithful, in-
telligible, and natural pickup of voice or music
Symmetrical cardioid pickup pattern minimizes
feedback
Spherical grille provides effective filtering out of
breath popping, when used for closeup vocals, and
of wind noise, when used outdoors
Rolled-off low-frequency response reduces prox-
imity effect (response rise from microphones used
closeup)
Shock-mounted cartridge for quiet operation, low
stand or handling noise
Combination OnlOff and Impedance-Selection
switch, with provision for locking out undesired im-
pedanceand locking switch On
Slip-in swivel adapter for easy positioning and for
simple handheldor stand-mounted use
Three-pinprofessional audioconnector, the industry
standard, for maximum interchangeabilityof cables
Field serviceable, and backed by the Shure
guarantee
SPECIFICATIONS
Type
Dynamic
Frequency Response
80 to 13,000 Hz (see Figure 1)
+I0
'u
5 -10
I
20 50 IW 1.000
FREWENCV IN HERTZ
I0,OW 20p
TYPICAL FREQUENCY RESPONSE
FIGURE 1
MODEL 588SD
UNIDIRECTIONAL DYNAMIC MICROPHONE
Polar Pattern
Cardioid (unidirectional)-uniform with frequency,
symmetrical about axis (see Figure 2)
--- 160 HZ --- 2500 HZ
- 400 HZ - 6300 HZ
..... 1000 HZ ..... 10.000 HZ
TYPICAL POLAR PATTERNS
FIGURE 2
Impedance
LO Z: Microphone rating impedance is 150 ohms
(180 ohms actual) for connection to microphone in-
puts rated at 75 to 300 ohms
HI Z: Microphone impedance is "High" for connec-
tion to high-impedance microphone inputs
Output Level (at 1,000 Hz)
LO Z HI Z
Open Circuit Voltage*. ... .. -82.0 dB -59.5 dB
(0.08 mV) (1.1 mV)
Power Level** ..... . .. . .. . -60.5 dB
*O dB = 1Vlpbar
**0dB = 1 mWllO pbar
Phasing
Positivepressureonthe diaphragm produces positive
voltage:
on pin
2 with respect to pin 3- LO Z;
on pin 1 with respect to pin 3-HI Z
Switch
Built-in OnIOff, Impedance-Selection switch with
lockplate to lock out undesired impedance, and
option to lock switch On
Connector
Three-pin professional (XLR) type
CartridgeShock Mount
Internal rubber vibration-isolator
222 HARTREYAVENUE, EVANSTON,ILLINOIS60202-3696U.S.A. TELEPHONE: [phone] CABLE: SHUREMICRO
Copyright 1985, Shure Brothers Inc.
27A2257 (EL) PrintedinU.S.A.

Swivel Adapter
Positive action, adjustable through 90° from vertical
to horizontal, slip-out removal for handheld use,
suitable for mounting on stand with %I"-27 thread
Case
Platinum beige enamel die casting with platinum
beige steel screen
Dimensions
See Figure3
(6-15/32 IN.)
r4 7
5 4
(2-1
(27/32 IN.)
OVERALL DIMENSIONS
FIGURE 3
Net Weight
284 grams (10 oz)
IMPEDANCESELECTION AND SWITCH LOCKING
The microphone isshipped with the switch locked in
the low-impedance(LO Z) position.
A. To lock the switch "On" in low impedance,
1. Loosen the screw holding the lockplate.
2. Move the switch button to "On."
3. Slide the lockplate up until the notch butts
against the button.
4. Tighten the screw.
"OFF" LO zw L:K:DSjJ "ON
\ LOCKPLATE
LOW-IMPEDANCELOCKPLATE POSITIONS
FIGURE 4
B. To change the switch to the high-impedance (HI Z)
position,
1. Remove the screw holding the lockplate.
2. Move the switch to the "Off" (Center) position.
3 . Removethe lockplate and replace the screw.
4. Removethe screw at the top of the switch.
5. Place the lockplate in position* with the notch
toward the switchbutton.
6. Replace and tighten the screw.
*The lockplate has two positions, just as in low-
impedance above: either locked inhighimpedance,or
locked "On" in high impedance.
HI Z
"OFF" LOCKED
HIGH-IMPEDANCELOCKPLATE POSITIONS
FIGURE 5
PHASING
To test two microphones for proper phasing, connect
them to an amplifier and talk or sing into them while
holdingthem three or four inchesapart. The sound from
,
the speakers should be the same when talking into
1
either microphone or directly between them if they are
in phasewith each other. If the sound drops drastically
or if a dead spot isfound when talking between the two
microphones, the microphones are out of phase. All
microphones should be tested in this manner to insure
that they are in phase with each other.
To change the phase of a balanced low-impedance
microphone, interchange the cable conductor leads at
one end of the cable. To change the phase in the
microphone,the microphone cartridge leads must be in-
terchanged (see Figure 6). This should be performed by
your dealer, the Shure Factory Service Department, or
other qualified service personnel.
CARTRIDGE SWITCH TRANSFORMER SPINPROFESSIONALAUDIO
CONNECTOR
I 1 BUCK
BUCK 1
BLUE
INTERNALCONNECTIONS
FIGURE 6
FURNISHED ACCESSORY
............................. Swivel Adapter A25B
OPTIONALACCESSORIES
Line Matching Transformer .............. A95 Series
......................
DeskStand S33B, S37A,S39A
Isolation Mount ............................ A55M
................................ Dual Mount A26M
Windscreen ........................ A58WS Series
Cable: 4.6m (15 ft) or 6.lm (20 ft)
1-conductor with phone plug
(High Impedance)
................ C15A, C20B
7.6m (25 ft) 2-conductor
with 3-pin professional audio connectors
................ (Low Impedance) C25J, C25F
REPLACEMENT PARTS
...................................
Cartridge R15
................ Screen and Grille Assembly RK253G
............................ OnlOff Switch 55A153
GUARANTEE
This Shure product isguaranteed innormal useto be
free fromelectrical and mechanicaldefects for a period
of one year from date of purchase. Please retain proof
of purchase date. This guarantee includesall partsand
labor. This guarantee is in lieu of any and all other
guarantees or warranties, express or implied, and there
shall be no recoveryfor any consequential or incidental
damages.
SHIPPING INSTRUCTIONS
Carefullyrepackthe unit, haveit insured, and return it
prepaid to: Shure Brothers Incorporated
Attention: Service Department
222 Hartrey Avenue
Evanston, Illinois 60202-3696
If outside the United States, return the unit to your
dealer or Authorized Shure Service Center for repair.
The unit will be returned to you prepaid.