Detailed instructions for use are in the User's Guide.
[. . . ] 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 4 (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. [. . . ] Installation Do not install this Mackie Industrial product in any way that is not provided for in the instruction manual. Stacking multiple units To prevent the danger of falling equipment, never stack multiple units of this Mackie Industrial product unless this possibility is expressly indicated in the instructions. Respect the safety standards The entire sound system must be designed in compliance with the current standards and laws regarding electrical systems.
8. Specifications When installing and using this Mackie Industrial product, keep in mind the technical specifications indicated in the dedicated section of the manual. Accessories Install and use this Mackie Industrial product only with the accessories specified by the manufacturer or supplied with the product. Hearing loss - Exposure to high sound levels 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. 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.
Duration per day (hours) 8 6 4 3 2 1. 5 1 0. 5 0. 25 or less
Sound level (dBA) 90 92 95 97 100 102 105 110 115
Typical example Duo in a small club
Subway train
Very loud classical music
Locomotive at 50 feet
Loudest parts at a rock concert
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INPUT
Hookup
OUTPUTS
25V 50V 70V 100V GND
POWER AMPLIFIER
+
+
70V Connection
OUTPUTS + L + R POWER AMPLIFIER
+
+
4 Ohm Stereo Connection
3
Rear Panel Features 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 4 operation). [. . . ] Always make sure that the rigging hardware minimum rating is at least five times the actual load.
4
MR3STK/MR3SWTK Specifications
System:
Freq. Coverage Angle (6 dB): 110°, averaged 800Hz-16kHz Directivity Factor Q (DI): 8. 5 (9. 3), averaged 800Hz-16kHz System Sensitivity 1: 89 dB, 1W@1m Rated Maximum SPL: 108 dB @ 1 m (3. 3 ft) peak Rated Nominal Impedance: 4 (bypassed) System Input Power Rating 2: 35W IEC, 140W Peak Recommended Amplifier 3: 250W RMS Constant Voltage: 25V, 50V, 70V, 100V Power Taps: 1W, 2. 5W, 5W, 10W, 20W Crossover Frequency: 6. 0kHz
Physical:
Enclosure: 45° back angles, high density polystyrene Attachment Inserts: 4 integrated threaded insert points Color: Grille: Matte black (MR3STK) White (MR3SWT) Matching perforated steel grille
Input Connectors: Spring-loaded terminal Dimensions HxWxD: 8. 27 in x 5. 91 in x 5. 31 in (210 mm x 150 mm x 135 mm) Net Weight: 5. 5 lb (2. 5 kg)
Options:
MA3-5 (MA3-5W): Articulated surface mount Black (White) MA3-6 (MA3-6W): U-bracket Black (White) MA-7B (MA-7W) Wall-mount support bracket Black (White)
Transducers:
Low Frequency: 4. 75" (120 mm) carbon fiber woofer High Frequency: 0. 5" (13 mm) titanium metalized dome tweeter, Ferrofluid cooled
1
Measured on-axis in the far field with 1 watt (2. 00V RMS @ 4 ) 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.
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www. mackieindustrial. com 16220 Wood-Red Road NE, Woodinville, WA 98072 USA TEL 888. 337. 7404, FAX 425. 487. 4337, industrial@mackie. com
UK +44. 1268. 571. 212, FAX +44. 1268. 570. 809 +industrial@rcf-uk. com ITALY +39. 0522. 354. 111, FAX +39. 0522. 926. 208 +industrial@rcf. it FRANCE +33. 3. 8546. 9160, FAX +33. 3. 8546. 9161 +rcf. commercial@wanadoo. fr GERMANY +49. 2572. 96042. 0, FAX +49. 2572. 96042. 10 +industrial@mackie. de
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