Mackie MR3SWTK, MR3STK User Manual

MONITOR MR3STK/SWTK

Compact Coaxial Speaker

The MR3STK (Black) and MR3SWTK (White)
are a compact two-way coaxial speaker system
featuring a built-in multi-tap constant voltage
transformer, with two detented rotary switches
for selecting wattage taps (constant voltage) or
4Ω (constant impedance) operation. The

4.75" carbon fiber woofer, in combination with
a coaxial 0.5" titanium metalized dome
tweeter, provide natural, smooth sound
reproduction, ideal for use in business music
systems and indoor/outdoor background
music applications.

The passive crossover is designed to reduce
heat dissipation and optimize the power
response of the loudspeaker. Connections are
made to recessed, color-coded spring-loaded
terminals.

The enclosure is constructed of high­density polystyrene, with integrated mounting
points for use with the optional mounting
hardware, and includes a protective
perforated steel grille.

Safety First!

Before connecting and using the equipment,
please read this Quick-Start Guide carefully
and keep it for future reference.

WARNINGWARNING

WARNING! This equipment has been

WARNINGWARNING

designed to be installed by qualified
professionals only! There are many factors to
be considered when installing professional
sound reinforcement systems, including
mechanical and electrical considerations, as
well as acoustic coverage and performance.
Mackie Industrial strongly recommends that
this equipment be installed only by a
professional sound installer or contractor.

1.1.

Attention to the precautionsAttention to the precautions

1.

Attention to the precautions – Always

1.1.

Attention to the precautionsAttention to the precautions
follow the precautions provided on this
Mackie Industrial product and in the
instruction manual.

2.2.

Water and humidityWater and humidity

2.

Water and humidity – Do not use this

2.2.

Water and humidityWater and humidity
Mackie Industrial product near water; for
example, in the vicinity of a bath tub or sink,
in a damp cellar, near a swimming pool, etc..

Quick-Start Guide

3.3.

Foreign bodies and liquidsForeign bodies and liquids

3.

Foreign bodies and liquids – Be careful not

3.3.

Foreign bodies and liquidsForeign bodies and liquids
to allow any foreign bodies or liquids to get
into this Mackie Industrial product.

4.4.

Technical serviceTechnical service

4.

Technical service – The user should never

4.4.

Technical serviceTechnical service
attempt to make any repairs on this Mackie
Industrial product unless otherwise indicated
in the instruction manual. All repairs should
be made by qualified service technicians.

5.5.

Installation Installation

5.

Installation – Do not install this Mackie

5.5.

Installation Installation
Industrial product in any way that is not
provided for in the instruction manual.

6.6.

Stacking multiple units Stacking multiple units

6.

Stacking multiple units – To prevent the

6.6.

Stacking multiple units Stacking multiple units
danger of falling equipment, never stack
multiple units of this Mackie Industrial
product unless this possibility is expressly
indicated in the instructions.

7.7.

Respect the safety standardsRespect the safety standards

7.

Respect the safety standards – The entire

7.7.

Respect the safety standardsRespect the safety standards
sound system must be designed in
compliance with the current standards and
laws regarding electrical systems.

8.8.

SpecificationsSpecifications

8.

Specifications – When installing and using

8.8.

SpecificationsSpecifications
this Mackie Industrial product, keep in mind
the technical specifications indicated in the
dedicated section of the manual.

9.9.

AccessoriesAccessories

9.

Accessories – Install and use this Mackie

9.9.

AccessoriesAccessories
Industrial product only with the accessories
specified by the manufacturer or supplied
with the product.

Hearing loss Hearing loss

Hearing loss - Exposure to high sound levels

Hearing loss Hearing loss
can cause permanent hearing loss. The sound
pressure level which leads to hearing loss
varies considerably from one person to
another, and depends on the duration of
exposure. The U.S. Government’s
Occupational Safety and Healt Administration
(OSHA) has established the maximum sound
pressure levels that can be with stood without
causing damage, which are shown in the table

below. According to the OSHA regulations,
any exposure over the maximum limits
indicated in the table can reduce the hearing
capacity of a person. To prevent potentially
dangerous exposure to high sound pressure
levels, anyone subjected to such levels must
use suitable protection. When a Mackie
Industrial product capable of producing high
sound levels is being used, it is therefore
necessary to wear ear plugs or protective
earphones when the limits shown in the table
are exceeded.

Consult the specifications provided in the
instruction manual to know the maximum
sound pressure (SPL) the speaker is capable
of producing.

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Hookup

70V Connection

INPUT

+– +–

OUTPUTS

25V 50V 70V 100V GND

POWER AMPLIFIER

– +

4 Ohm Stereo Connection

OUTPUTS

LR

+ – + –

POWER AMPLIFIER

– +

3

Rear Panel Features

+–

INPUT

and Controls

1. This rotary control selects the power tap
for the internal constant voltage
transformer. Choices are 1W, 2.5W, 5W,
10W, 20W, and BYPASS (used for 4Ω
operation).

2. This rotary control selects the constant
voltage distributed system in which the
speaker is used. Choices are BYPASS
(used for 4Ω operation), 0(Off), 25V, 50V,
70V, and 100V.

Note: Use a slot-head screwdriver to
adjust the rotary controls.

3. Use these spring-loaded terminals to
connect the speaker wiring.

Connections

The spring-loaded speaker terminals are
designed to accept bare wire, up to a
maximum of 18 gauge. Strip 1/4” of insulation
off the end of the speaker wire, press in the
tab, and insert the bare wire into the hole.
When you release the tab, the wire is locked in
place. Make sure there are no stray strands of
wire outside the terminal connection.

Installation

The MONITOR MR3ST can be mounted using
the optional mounting brackets. These include
the following:

MA3-5 Articulated surface mount
MA3-6 U-bracket
MA-7B Wall-mount support bracket

WARNING: Consult a professional rigger or
structural engineer prior to suspending
loudspeakers from a structure not intended
for that use. Always know the working load
limit of the structure supporting the
loudspeaker array. Always make sure that
the rigging hardware minimum rating is at
least five times the actual load.

4

MR3STK/MR3SWTK
Specifications

System:

Freq. Range (–10 dB):

Freq. Response (–3 dB):

Horz. Coverage Angle (–6 dB):

Vert. Coverage Angle (–6 dB):

Directivity Factor Q (DI):

System Sensitivity

Rated Maximum SPL:

Rated Nominal Impedance:

System Input Power Rating

Recommended Amplifier 3:

Constant Voltage:

Power Taps:

Crossover Frequency:

140Hz-21kHz

180Hz-19kHz

110°, averaged 800Hz-16kHz

110°, averaged 800Hz-16kHz

8.5 (9.3), averaged 800Hz-16kHz

1

:

89 dB, 1W@1m

108 dB @ 1 m (3.3 ft) peak

4Ω (bypassed)

2

35W IEC, 140W Peak

250W RMS

25V, 50V, 70V, 100V

1W, 2.5W, 5W, 10W, 20W

6.0kHz

Physical:

Enclosure:

Attachment Inserts:

Color: Matte black (MR3STK)

Grille: Matching perforated steel grille

Input Connectors:

Dimensions HxWxD:

Net Weight:

:

Options:

MA3-5 (MA3-5W):

MA3-6 (MA3-6W):

MA-7B (MA-7W)

45° back angles, high density
polystyrene

4 integrated threaded insert points

White (MR3SWT)

Spring-loaded terminal

8.27 in x 5.91 in x 5.31 in
(210 mm x 150 mm x 135 mm)

5.5 lb (2.5 kg)

Articulated surface mount
Black (White)

U-bracket
Black (White)

Wall-mount support bracket
Black (White)

Transducers:

Low Frequency:

High Frequency:

1

Measured on-axis in the far field with 1 watt (2.00V RMS @
4Ω ) input and referenced to 1 meter distance using the
inverse square law. Listed sound pressure represents an
average from 300Hz to 3kHz.

2

IEC Spectrum, peak for 2 hours with +4.5 dB crest factor.

3

Recommended amplifier is a power capability value that
should be taken as a guide.

4.75" (120 mm) carbon fiber woofer

0.5" (13 mm) titanium metalized
dome tweeter, Ferrofluid cooled

5

16220 Wood-Red Road NE, Woodinville, WA 98072 USA

www.mackieindustrial.com

TEL [phone], FAX [phone], [e-mail]

UK +44.1268.571.212, FAX [phone] [e-mail]

ITALY +39.0522.354.111, FAX [phone] [e-mail]
FRANCE +33.3.8546.9160, FAX [phone] [e-mail]
GERMANY +49.2572.96042.0, FAX [phone] [e-mail]

Part No. 910-178-20 Rev. C1 2/02

© 2002 Mackie Industrial. All Rights Reserved.

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