Shure SCM800 User manual

Model SCM800/SCM800E
User Guide
27D8469 (Rev. 2) Printed in U.S.A.
©2008, Shure Incorporated
SCM800/SCM800E
EIGHT-CHANNEL MICROPHONE MIXER
*27D8469*

2
! IMPORTANT SAFETY INSTRUCTIONS !
1. READ these instructions.
2. KEEP these instructions.
3. HEED all warnings.
4. FOLLOW all instructions.
5. DO NOT use this apparatus near water.
6. CLEAN ONLY with dry cloth.
7. DO NOT block any ventilation openings. Install in accordance with the manu-
facturer's instructions.
8. DO NOT install near any heat sources such as radiators, heat registers, stoves,
or other apparatus (including amplifiers) that produce heat.
9. DO NOT defeat the safety purpose of the polarized or grounding-type plug. A
polarized plug has two blades with one wider than the other. A grounding type
plug has two blades and a third grounding prong. The wider blade or the third
prong are provided for your safety. If the provided plug does not fit into your out-
let, consult an electrician for replacement of the obsolete outlet.
10. PROTECT the power cord from being walked on or pinched, particularly at plugs,
convenience receptacles, and the point where they exit from the apparatus.
11. ONLY USE attachments/accessories specified by the manufacturer.
12.
13. UNPLUG this apparatus during lightning storms or when unused for long periods of
time.
14. REFER all servicing to qualified service personnel. Servicing is required when the
apparatus has been damaged in any way, such as power-supply cord or plug is dam-
aged, liquid has been spilled or objects have fallen into the apparatus, the apparatus
has been exposed to rain or moisture, does not operate normally, or has been
dropped.
15. DO NOT expose the apparatus to dripping and splashing. DO NOT put objects filled
with liquids, such as vases, on the apparatus.
16. The MAINS plug or an appliance coupler shall remain readily operable.
17. The airborne noise of the apparatus does not exceed 70dB (A).
18. Apparatus with CLASS I construction shall be connected to a MAINS socket outlet
with a protective earthing connection.
19. To reduce the risk of fire or electric shock, do not expose this apparatus to rain or
moisture.
20. Do not attempt to modify this product. Doing so could result in personal injury
and/or product failure.
USE only with a cart, stand, tripod, bracket, or table
specified by the manufacturer, or sold with the
apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid
injury from tip-over.
This symbol indicates that there are important operating and
maintenance instructions in the literature accompanying this unit.
WARNING: Voltages in this equipment are hazardous to life. No user-serviceable parts inside. Refer all servicing to qualified service personnel. The
safety certifications do not apply when the operating voltage is changed from the factory setting.
This product contains a chemical, known to the State of California, to cause cancer and birth defects or other
reproductive harm.
This symbol indicates that dangerous voltage constituting a
risk of electric shock is present within this unit.

3
DESCRIPTION
The Shure Model SCM800 is a full-featured, eight-channel microphone
mixer for sound reinforcement, general audio recording, and audio-visual
systems. Any low-impedance, balanced dynamic or condenser microphone,
including a wireless microphone system, can be used with the SCM800 mixer.
Each SCM800 accepts up to eight microphone- or line–level inputs and
one aux-level input (two input jacks feed the same channel). Up to four
SCM800 mixers can be linked to provide up to 32 input channels. Each
input channel has a two-band equalizer, switchable microphone- or
line-level operation, switchable 48 V phantom power, and a ¼-inch send/
receive insert jack.
The SCM800 operates on 120 Vac power; the SCM800E operates on 230
Vac power. Both models are supplied with rack-mounting hardware, link
cable and removable block terminal connectors. An accessory rack panel
adapter (Model RKC800, available separately) converts the removable
block input and output connectors to XLR connectors, and the Aux con-
nectors to phono jacks.
Compatible with Shure SCM810 and FP410 automatic micro-•
phone mixers
Adjustable EQ per channel: low-frequency rolloff and high-•
frequency shelving
48 V phantom power selectable for each input•
Active balanced microphone- and line-level inputs and line-level•
output
Highly RF-resistant chassis and circuitry•
LED indication of channel clipping•
Linking capability for systems up to 32 microphones•
Two Aux-level input jacks that feed one channel•
Insert jack on each channel•
Manual mixing of input channels•
Front-panel headphones output with level control•
Peak-responding output limiter with selectable thresholds and•
LED indicator
SCM800 FRONT PANEL
MODEL SCM800/E FRONT PANEL
FIGURE 1
Microphone Channel Gain Controls 1 - 8:1. Allows adjustment of
microphone gain.
Input LED 1 - 8:2. Lights red at 6 dB below clipping level.
Low-Cut Filter 1 - 8:3. Recessed screwdriver adjustment provides
adjustable low-frequency rolloff (high pass) to reduce undesirable
low-frequency signals.
High-Frequency Shelving Filter 1 - 8:4. Recessed screwdriver
adjustment provides level boost or cut in mid/high frequency
region for compensation of off-axis lavalier microphones, or for
cutting the high-frequency sibilance of vocal microphones.
AUX Level Control:5. Sets the input level for aux-level equipment
connected to the adjacent ¼-inch phone jack INPUT or rear-
panel ¼-inch AUX input.
AUX INPUT ¼-inch Phone Jack:6. Mixes external auxiliary- or
line-level sources, i.e., tape recorders, into output. Signal appears
at output of all linked mixers.
MASTER Level Control:7. Determines the overall mix level.
Output Level Meter:8. Nine-segment LED meter indicates peak
output signal level. Last LED indicates limiter action.
PHONES Control and ¼-inch Phone Jack:9. Permits monitoring
of mixer output through headphones. PHONES control deter-
mines headphones output level.
POWER LED:10. Lights green when unit is powered.
FEATURES

4
SCM800 REAR PANEL
MODEL SCM800/E REAR PANEL
FIGURE 2
SCM800: 120 VAC Power Connector and Rocker Switch:11.
Switch turns unit on when power cord is plugged into 120 Vac.
SCM800E: 230 VAC Power Connector and Rocker Switch:
Switch turns unit on when power cord is plugged into 230 Vac.
DIP Switch:12. The 7-position DIP switch provides control of the
output limiter threshold (see DIP Switches).
LINK IN/OUT Jacks:13. Permit multiple SCM800 mixers to be
stacked for additional inputs.
LINE OUTPUT Removable Block Connector:14. Active balanced
line-level signal for connection to amplifiers, recorders or other
mixers. If necessary, output level can be changed to microphone
level. Refer to the Internal Modications section of this manual.
SEND/RECEIVE ¼-inch Insert Jacks:15. Post-fader, post-EQ insert
point to add external compressor/limiter, graphic or parametric
EQ, or other signal processors. Tip is send, ring is return. Can
be modified for use as a Direct Out (see Internal Modications).
AUX/INS/INS 3-Position Slide Switch:16. Selects either aux input
function or insert function for channel 8 (only) Insert jack. Left
switch position is AUX IN; center and right positions are INSERT.
This switch is located behind Line Output connector.
INPUT 1-8 Removable Block Connectors:17. Active balanced
microphone- or line-level inputs.
Input 1 - 8 MIC/PHM/LINE 3-Position Slide Switch:18. Selects
operation at either microphone-level (left), microphone-level with
48 V phantom power (center), or line-level (right) signals. This
switch is located behind the removable block connector.

5
SYSTEM SETUP
RACK MOUNTING THE SCM800/E
To mount an SCM800 or SCM800E in a standard 483 mm (19-inch) audio
equipment rack so that the front panel faces out, as shown in Figure 4.
Then secure the mixer to the rack with the four supplied Phillips head
screws.
RACK MOUNTING THE SCM800/E
FIGURE 4
Refer to Figure 5 and proceed as follows:
Connect microphone- or line-level signal sources to the Channel1.
Input connectors (use conventional two-conductor shielded
cables).
Insert a screwdriver or similar tool into the slot above each block2.
connector and adjust the input slide switch as required: micro-
phone level (left position), 48 V phantom power (center position),
or line level (right switch position).
Connect the Line Level Output of the SCM800/E to the input3.
of other mixers, equalizers, amplifiers, or recorders. If multiple
SCM800/E mixers are to be used, refer to the Mixer Linking para-
graph of this manual.
If headphone monitors are to be used, plug them into the ¼-inch4.
PHONES jack on the front panel.
Connect the power cord to a 120 Vac (SCM800) or 230 Vac5.
(SCM800E) power source.
TO STEREO OR MONO HEADPHONES
FROM AUX– OR LINE–LEVEL SOURCE
TO AMP/RECORD/MIXER INPUT
TO LINKED SCM800 MIXERS
TO POWER SOURCE
TO AMP/REC/MIXER INPUT (CH. 1–7)
FROM MIC/LINE SOURCE (CH. 1–8)
OR FROM AUX SOURCE (CH. 8)
MIXER OUTPUT TO AMP/REC/MIXER INPUT
SCM800/E AUDIO CONNECTIONS
FIGURE 5
The DIP switches on the rear-panel, shown below in Figure 3, control
the output limiter threshold settings. Switches 5 and 6 change the output
limiter threshold to OFF (default setting), +16 dBm, +8 dBm, or +4 dBm.
Other settings are as shown in the table at right. Refer to the Internal
Modicationssection of this manual for additional settings.
NOTE: Switches 1, 2, 3, 4 and 7 are inactive and are not used.
DIP SWITCH FUNCTIONS
DIP Switch Position Limiter Threshold
5 Up
6 Up
Limiter Off
(default)
5 Down
6 Up
+8 dBm
5 Up
6 Down
+16 dBm
5 Down
6 Down
+4 dBm
1 23456 7
(MIXER
REAR
PANEL)
OUTPUT LIMITER THRESHOLD DIP SWITCH
FIGURE 3
SCM800/E CONNECTIONS
OUTPUT LIMITER THRESHOLD SETTINGS

6
LINKING MULTIPLE SCM800 MIXERS
Up to four SCM800 mixers can be “linked” using the supplied link cables
If additional inputs are needed. Such a configuration can provide 32 mic
inputs. Refer to Figure 6.
When multiple SCM800 mixers are linked, all input signals appear at all
linked mixer outputs––there is no master-slave relationship. The output
controls and functions of each linked mixer are post-link and do not affect
the signals appearing at other linked mixer outputs. Each mixer’s Master
level control only controls its own output. Each output can be used inde-
pendently. In a linked system, the Aux input of any mixer appears at each
linked mixer’s output. See InternalModications to defeat the linking of
Aux signals.
Link jacks should be connected sequentially: theLINK OUTof one mixer to
the LINK IN of the next, leaving one LINK OUT and one LINK IN uncon-
nected.
NOTE: Each doubling of the number of linked mixers decreases the
master output level by 6 dB.
LINKING MULTIPLE SCM800/E MIXERS
FIGURE 6
An SCM800 can be interfaced with Shure SCM810 and FP410 automatic
microphone mixers via the link jacks. Linking an SCM800 is equivalent
to adding an additional mixer with eight open microphones to a system.
Because of the loading effects of additional open microphones, only
one SCM800 can be linked to an automatic system. When using more
than one SCM800 with other Shure automatic mixers, connect them as
described in the following section.
NOTE: When linking an SCM800 to an automatic system, use the
SCM800 LINK OUT jack to interface with the LINK IN jack of the
automatic system (see Figure 7).
LINKING AN SCM800/E TO OTHER AUTOMATIC MIXERS
FIGURE 7
The master output of the SCM800 (or the output of a mixer in a group of
linked SCM800 mixers) can be connected to a channel input or the aux
input of an automatic mixer, or other types of mixers. See Figure 8.
OUTIN
IN
SCM800
SCM800
SCM810
LINE OUT
MIC IN
USING AN SCM800/E AS A SUBMIXER
FIGURE 8
Additional 381 mm (15 in.) link cables are available as Shure Part No.
95A8889. Longer cables in a variety of lengths are available from Apple
Computer as computer printer connections; they are variously referred to
by Apple as “shielded serial cable with two mini DIN-8 connectors,” and
“Apple System Peripheral–8 Cable.”
LINKING TO OTHER SHURE AUTOMATIC MIXERS
USING AN SCM800 AS A SUBMIXER
ADDITIONAL LINK CABLES

7
Turn on the Power switch.1.
Adjust each channel level so that its Overload LED flickers only2.
during very loud speech or noise.
Turn unused channel controls full counterclockwise.3.
Adjust the Low-Cut and High-Frequency controls adjacent to4.
each Input Gain control until all microphones sound alike.
Adjust the SCM800 Master level control for the desired output5.
level, as indicated by the output peak meter.
Adjust the headphones volume level with the PHONES control6.
knob.
BASIC MIXER OPERATION
LIMITER
The SCM800’s output limiter prevents distortion during loud program
peaks without affecting normal program levels. Increasing the individual
or Master level controls will increase the average output and, in turn, the
amount of limiting. The limiter prevents excessive overloading of devices
connected to the SCM800 output. As supplied, the limiter is defeated.
The limiter threshold can be set for a peak output level of +4, +8, or +16
dBm. With the threshold set at +16 dBm, the mixer has 12 dB of head-
room at a nominal level of +4 dBm. Refer to the InternalModications
section for information on how to change the limiter’s settings.
EQUALIZER FUNCTIONS
Low Cut Filter (High-Pass)
The low-cut (or high-pass) filter allows all frequencies above its cutoff
point to pass from filter input to filter output without attenuation, while fre-
quencies below the cutoff are attenuated (see Figure 9). The cutoff point
is defined as the frequency where the signal has dropped 3 dB relative
to the flat, or bandpass, region. Below the cutoff point, the filter exhibits
increasingly more attenuation as the frequency diminishes. The rate at
which this attenuation occurs is defined in decibels per octave (dB/oct).
The SCM800 has a one-pole, low-cut (highpass) filter of 6 dB per octave.
Low-cut filters are ideally used for attenuating, or rolling off, the audio signal
where extraneous noise, excessive proximity effect, or other unwanted
material is present. For example, the low-frequency vibration cause by
footsteps and vehicle traffic can be transmitted through microphone
stands to the microphone, and then into the sound system. These
frequencies, typically ranging from 5 to 80 Hz, are generally not desirable.
-10
-8
-6
-4
-2
0
+2
20 100 1,0005,000
FREQUENCY (Hz)
FULL CCW
50%
ROTATION
FULL CW
LOW–CUT FILTER EFFECTS
FIGURE 9
High-Frequency Shelving
The fixed-frequency equalizer produces a 6 dB boost or cut at 5 kHz
and above (see Figure 10). High-frequency shelving is extremely useful
for boosting flat frequency response, tempering very sibilant vocal
microphones, or enhancing the sound of off-axis lavalier microphones.
200
-10
-8
-6
-4
-2
0
+2
+4
+6
+8
+10
1,00010,000 20,000
FREQUENCY (Hz)
FULL
CW
FULL
CCW
50%
ROTATE
HIGH-FREQUENCY SHELVING EFFECTS
FIGURE 10

8
SPECIFICATIONS
MeasurementConditions(unlessotherwisespecied):
Linevoltage120Vac,60Hz(SCM800)or230Vac,50Hz(SCM800E);full
gain;1kHz.
Sourceimpedances:Mic150Ω,Line150Ω.
Terminations: Line 10 kΩ, Phones 300 Ω(tip-sleeveandring-sleeve),
Direct Out 10 kΩ.
Equalizationcontrolsadjustedforatresponse,Channel1gaincontrolfull
clockwise,othergaincontrolsfullcounterclockwise.
Frequency Response (Ref .1 kHz, channel controls centered)
50 Hz to 20 kHz ±2 dB; -3 dB corner at 25 Hz
Voltage Gain (typical, controls full clockwise)
Input
OUTPUT
Line Headphones Direct Out
Low-impedance
mic (150 Ω)
80 dB 88 dB 34 dB
Line 40 dB 48 dB –6 dB
Aux 44 dB 52 dB -
Send/Return 20 dB 28 dB -
Inputs
Input
Impedance Input
Clipping
Level
Designed
for use with
Actual
(typical)
Mic 19-600 Ω10 kΩ-12 dBV
Line ≤2 kΩ10 kΩ+22 dBV
Aux ≤2 kΩ10 kΩ+22 dBV
Send/Return ≤2 kΩ10 kΩ+18 dBV
Outputs
Output
Impedance Output
Clipping
Level
Designed
for use with
Actual
(typical)
Line >600 Ω60 Ω-18 dBV
Headphones 8-200 Ω,
60 Ω
recommended
300 Ω+12 dBV
Direct Out >2 kΩ1 kΩ+18 dBV
Send/Return >2 kΩ1 kΩ+18 dBV
Total Harmonic Distortion
<0.1% at +18 dBV output level, 50 Hz to 20 kHz (through 20 Hz-20 kHz
filter; Input 1 and Master at 5, all other controls full counterclockwise)
Hum and Noise
Equivalent Input Noise: -125 dBV (150 Ωsource; through
400 Hz–20 kHz filter)
Equivalent Input Hum and Noise: -123 dBV (150 Ωsource;
through 20 Hz - 20 kHz filter)
Output Hum and Noise (through 20 Hz to 20 kHz filter;
channel controls full counterclockwise):
Master full counterclockwise: -90 dBV
Master full clockwise: -62 dBV
Common Mode Rejection
>70 dB at 1 kHz
Polarity
Mic/Line, Send inputs to all outputs are non-inverting; Aux input to all
outputs is inverting
Overload and Shorting Protection
Shorting outputs, even for prolonged periods, causes no damage.
Microphone inputs are not damaged by signals up to 3 V; Line and
Monitor inputs by signals up to 20 V
Equalization
Low-frequency: 6 dB/octave cut, adjustable corner from 25 to 320 Hz
High-frequency: ±6 dB at 5 kHz, ±8 dB at 10 kHz, shelving
Limiter
Type: Peak
Threshold: Switchable: off, +4, +8, +16 (dBm at output)
Attack Time: 2 ms
Recovery Time: 300 ms
Indicator: Lights red when limiting occurs
Input LEDs
Light at 6 dB below clipping
Phantom Power
46 Vdc open-circuit through 6.8 kΩseries resistance per DIN 45 596
Operating Voltage
SCM800: 120 Vac rated nominal, 50/60 Hz, 200 mA
SCM800E: 230 Vac rated nominal, 50/60 Hz, 100 mA
Temperature Range
Operating: 0° to 60° C (32° to 140° F)
Storage: -30° to 70° C (-22° to 158° F)
Overall Dimensions
44.5 mm H x 483 mm W x 317 mm D (1¾ x 19 x 12½ in.)
Net Weight
4.3 kg (9 lb., 9 oz.)
Certifications
SCM800: Listed by Underwriters Laboratories, Inc.; Certified by
Canadian Standards Association; SCM800E: Conforms to European
Union Directives; Certified to EN60065; Eligible to bear CE Marking;
Conforms to European EMC Directive 2004/108/EC; Meets
Harmonized Standards EN55103-1:1996 and EN55103-2:1996 for
residential (E1) and light industrial (E2) environments.
Authorized European Representative:
Wolfgang Bilz, Dipl, Ing, (FH), EMEA Approval
Shure Europe GmbH
Headquarters Europe, Middle East & Africa
Wannenacker Str. 28
D-74078 Heilbronn, Germany
Replacement Parts
Knob, Channel Gain & Phones (white) . . . . . . . . . . . . 95A8238
Knob, Master (blue) . . . . . . . . . . . . . . . . . . . . . . . . . . . 95B8238
Line (Power) Cord (SCM800) . . . . . . . . . . . . . . . . . . . . 95B8389*
Line (Power) Cord (SCM800E) . . . . . . . . . . . . . . . . . . 95C8247*
Link Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95B8889
Three -Terminal Block Connector . . . . . . . . . . . . . . . . 95B8580
Service Statement
For additional service or parts information, please contact the Shure
Service Department at 1-800-516-2525. Outside the United States, please
contact your authorized Shure Service Center.
*For systems requiring other mains connectors, use a power cord with
an IEC 320 type mating connector for connection to the SCM800, and
an appropriate plug on the other end for connection to the mains. The
supplied cord uses Harmonized IEC Cordage with color coding as fol-
lows: Brown = Line, Blue = Neutral, Green/Yellow = Ground.

9
INTERNAL MODIFICATIONS
NOTE: Remove AC power before opening the unit. ABOUT PRINTED CIRCUIT BOARD MODIFICATIONS
A jumper is represented by “X” on the printed circuit•
board legend, a resistor is represented by an “R.”
Therstnumberinthereferencedesignatorindicatesthe•
channelnumber;i.e.,R1027referstoaChannel1resistor,
andX7216referstoaChannel7jumper,etc.
Components in the Master section are preceded by the•
number “9” (X901, etc.).
The circuit board contains holes where resistors are to be•
added.
Asingledropofsoldercanserveasajumperbetween•
adjacent jumper pads.
AllChannelmodicationsinthissectionuseChannel1•
as an example.
INSERTING A 15 dB MICROPHONE PREAMPLIFIER PAD
Each channel’s microphone preamplifier gain can be reduced by 15 dB.
This may be desirable with extremely high-output microphones.
Procedure:
To pad the gain of the MIC position
Remove surface mount resistor R1023.1.
Solder a 6802. Ωresistor at jumper X112. For a greater gain
reduction, use a resistor with a value greater than 680 Ω. Use a
lesser value resistor for less reduction.
To pad the gain of the PHM (phantom) position:
Remove surface mount resistor R1026.1.
Solder a 1.5 k2. Ωresistor at jumper X110. This reduces gain by
8 dB. For a greater gain reduction, use a resistor with a value
greater than 1.5 kΩ. Use a lesser value resistor for less reduction
NOTE: To compensate for higher output condenser microphones,
the factory-set gain in the PHM position is 13 dB lower than the
gain in the MIC position.
Procedure:
Short jumper X901.1.
Remove resistors R900 and R909.2.
LINE-LEVEL OUTPUT TO MIC-LEVEL OUTPUT
The Master gain control can be disabled so it cannot be tampered with. The
following table indicates the resistor value to be used for the desired gain.
Master Section Gain Resistance
-6 dB 5.1 kΩ
0 10 kΩ
6 dB 20 kΩ
Procedure:
Remove resistor R9230.1.
Install new resistor at jumper X914.2.
DISABLE MASTER LEVEL CONTROL

10
All three threshold settings (+16, +8 and +4 dBm) can be changed. To
shift the threshold down by 6 dB, resistor R will be 82 kΩ. To shift the
limiter thresholds up by 6 dB, R will be 330 kΩ.
Procedure:
Remove resistors R9177 and R9180.1.
Install new resistor R at jumper X907.2.
With linked mixers, the Aux input from a modified mixer does not link. Procedure:
Remove resistor R9024.
Changes a channel’s ¼-inch insert jack to a Direct Out jack. Procedure:
Remove resistors at X101, X102, X105 and X106, and X808 if1.
modifying channel 8.
Short jumpers R1011 and R1020.2.
CHANGE LIMITER THRESHOLD
LOCAL AUX OPERATION
SEND/RETURN (INSERT) TO DIRECT OUT
A channel’s Insert phone jack can be changed to Direct Out, post-fader. Procedure:
Remove resistors at X101, X102 and X105.1.
Short jumpers at R1020.2.
SEND/RETURN TO DIRECT OUT POST-FADER
REMOTE VOLUME CONTROL OF CHANNELS
The channel, aux, or master levels can be controlled remotely by a
dc voltage via an external VCA (Voltage Controlled Amplifier). An
example of an external VCA is the ST-VCA1 from Radio Design Labs
(1–800–281–2683 or www.rdlnet.com).
Procedure:
For channel control:
Connect the tip of a ¼-in. connector to the line input of the VCA,1.
and the sleeve to the ground of the VCA.
Connect the ring to the line output of the VCA.2.
Plug the ¼-in. connector to the Insert jack of the SCM800.3.
Set the channel level control should be set to 5.4.
For Aux In control:
Connect the external source to the VCA line input.1.
Connect the VCA line output to the tip and sleeve of the SCM8002.
Aux input.
Set the Aux control to 5.3.
For Master control:
Connect SCM800 Line output to the VCA line input.1.
Connect the VCA line output to the external device (amplifier,2.
tape recorder, etc.).
Set Master control to 5.3.

11

www.shure.com
United States:
Shure Incorporated
5800 West Touhy Avenue
Niles, IL 60714-4608 USA
Phone: [phone]
Fax: [phone]
Email: [email protected]
©2008 Shure Incorporated
Europe, Middle East, Africa:
Shure Europe GmbH
Wannenäckestr. 28,
74078 Heilbronn, Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Asia, Pacific:
Shure Asia Limited
Unit 301, 3rd Floor
Citicorp Centre
18, Whitfield Road
Causeway Bay, Hong Kong
Phone: [phone]
Fax: [phone]
Email: [email protected]
Canada, Latin America,
Caribbean:
Shure Incorporated
5800 West Touhy Avenue
Niles, IL 60714-4608 USA
Phone: [phone]
Fax: [phone]
Email: [email protected]