The Shure MX690 and MX890 are wireless desktop base and boundary microphones designed for corporate boardrooms and other applications requiring flexible microphone configurations. They operate within the 518-937 MHz band and are compatible with Shure SLX wireless systems.
Function Description
The MX890 is a wireless desktop base for MX405, MX410, and MX415 gooseneck microphones, offering cable-free installation. The MX415 miniature gooseneck microphones are particularly suitable for boardrooms where aesthetics are important. The MX690 is a wireless boundary microphone, also providing cable-free installation for flexible configurations. Both models feature a microprocessor-controlled transmitter with frequency agility.
Important Technical Specifications
Working Range:
- Line of Sight: 30 m (100 ft)
Frequency Stability:
Modulation:
- FM, 45 kHz max. deviation
Power Requirements:
- 2 LR6 AA batteries, 1.5 V, alkaline
- Power Consumption @3 V:
- Display backlight on: 220 mA, ±30 mA (MX690) / 245 mA, ±30 mA (MX890)
- Display backlight off: 175 mA, ±30 mA (MX690) / 200 mA, ±30 mA (MX890)
Battery Life:
Operating Temperature Range:
- -18°C (0°F) to +57°C (135°F)
Dimensions:
- 43 mm x 87 mm x 148 mm (H x W x D)
Weight:
- MX690:
- Net: 319 g (11.2 oz.)
- Packaged: 516 g (18.2 oz.)
- MX890:
- Net: 312 g (11 oz.)
- Packaged: 530 g (18.7 oz.)
Frequency Range (MHz):
Shure offers various frequency bands to comply with different government regulations and prevent interference. The available bands are:
- G4: 470 to 494
- G5: 494 to 518
- H5: 518 to 542
- H19: 542 to 572
- H62: 518 to 530
- J3: 572 to 596
- L4: 638 to 662
- P4: 702 to 726
- Q4: 740 to 752
- R13: 794 to 806
- R5: 800 to 820
- JB: 806 to 810
- S6: 838 to 865
- X4: 925 to 932
- X7: 925 to 937.5
Note that frequency bands might not be available for sale or authorized for use in all countries or regions.
Pickup Angle:
- Cardioid cartridge: 130° at -3 dB
- Supercardioid cartridge (for MX890 with compatible gooseneck): 115° at -3 dB
Low-Cut Filter:
- Attenuates frequencies below 150 Hz by 6 dB per octave.
Usage Features
Placement:
- MX890: Place no more than 25 cm (1 ft.) from the edge of the table. Aim the microphone toward the talker and away from loudspeakers and noise sources. Use one microphone per talker.
- MX690: Place within 1.5 m (5 ft.) of a talker. Aim the microphone toward the talkers and away from loudspeakers and noise sources. Use one microphone for every two talkers.
- RF Interference: Maintain a distance of at least 0.3 m (1 ft.) between transmitters to minimize RF interference. Increase distance or change channels if interference occurs.
- Receiver Placement: Ensure the receiver is within sight of the transmitter. Avoid placing the receiver behind metal barriers or reflective surfaces.
Gooseneck Connection (MX890):
- Align the pin on the microphone flange with the slot on the desktop base.
- Insert the gooseneck into the desktop base and lock it by rotating the gooseneck sleeve clockwise.
Power On/Off:
- With the battery door open, press and hold the ON/OFF button for approximately 2 seconds until the LCD screen illuminates.
- To turn off, press and hold the ON/OFF button for approximately 2 seconds until the LCD screen is blank and external LEDs go dark.
- To power on without opening the battery compartment, press and hold the plastic ON/OFF button on the battery door for approximately 2 seconds.
Mute Button:
The PUSH button can be configured for toggle or momentary operation.
- Toggle (as supplied): Toggles the microphone between active and muted states. Powers up in the active state.
- Momentary:
- Push-to-Mute: Microphone is muted only while the button is pressed and held.
- Push-to-Talk: Microphone is active only while the button is pressed and held.
- Changing Mute Mode:
- To change between toggle and momentary: Hold the PUSH button and press the SELECT button.
- To change between push-to-talk and push-to-mute: First, set the button for momentary operation. Then, hold the SELECT button and press the PUSH button.
Mute Indicator:
- MX890: The gooseneck microphone LED indicates status.
- Active: Green (MX405/MX410), Red (MX405R/MX410R Light Ring)
- Muted: Red/Flashing Green* (MX405/MX410), Off/Flashing* (MX405R/MX410R Light Ring)
- *To toggle between off and flashing, press PUSH and ON/OFF simultaneously.
- MX690: The bi-color LED on top indicates status.
- Steady (as supplied): Active = Green, Muted = Red
- Flashing: Active = Green, Muted = Flashing Green
Locking Settings:
- Press ON/OFF and SELECT simultaneously to lock or unlock transmitter settings. When locked, current settings cannot be manually changed. This does not disable IR frequency synchronization or the High Pass/Low Cut filter.
Logic Mode:
- For use with a logic-enabled receiver, an automatic sync must be performed. The LCD flashes "log" during sync and when powered up in logic mode.
Automatic Frequency Synchronization:
- Power off all transmitters.
- Open the battery cover of the first transmitter and power it on.
- Aim the transmitter's IR sensor at the receiver's IR port (no more than 15 cm / 6 in. away).
- Press and hold the receiver's SYNC button to send group and channel data. The red LED on the transmitter will stop flashing when programming is complete.
- Power off the first transmitter and repeat the synchronization process for each additional transmitter and receiver pair.
Manual Frequency Synchronization:
- Press and hold the transmitter SELECT button until the desired group number appears.
- Press SELECT again and release it when the desired channel number appears.
Tips for Optimum Performance:
- Maintain a direct line of sight between transmitter and receiver antennas.
- Avoid placing the transmitter on metal surfaces.
- Avoid placing laptop computers or other obstructions in front of the microphone.
- Only use with a Shure SLX4L wireless receiver.
Maintenance Features
Battery Installation:
- Open the battery compartment.
- Insert two 1.5 V "AA" batteries, ensuring correct +/- terminal orientation.
- Alkaline batteries last up to 8 hours. Rechargeable, carbon-zinc, and zinc-chloride batteries provide less operating time.
Power Meter:
- The battery meter on the LCD shows remaining battery life.
Low Power Indicator:
- Steady Red: Power low, replace batteries immediately.
- Pulsing Red: Batteries dead, transmitter cannot be turned on until batteries are replaced.
Troubleshooting:
- Ensure both transmitter and receiver are on.
- Replace battery if the battery LED is red.
- Verify identical Group/Channel settings for each transmitter-receiver pair.
- Ensure unobstructed line of sight between transmitter and receiver. Reposition receiver or decrease distance if necessary.
- Remove local sources of RF interference (e.g., computers, lighting).
- Remove metal objects within 0.3 m (1 ft.) of the transmitter.
Certifications:
- Certified under FCC Part 74.
- Certified by ISED in Canada under RSS-102 and RSS-210.
- Meets essential requirements of European Directives: WEEE Directive 2002/96/EC (as amended by 2008/34/EC) and RoHS Directive 2011/65/EU.
- Eligible for CE marking.
- Shure Incorporated declares compliance with Directive 2014/53/EU.
Licensing Information:
- A ministerial license may be required in certain areas. Consult national authority for requirements.
- Changes or modifications not expressly approved by Shure Incorporated could void authority to operate the equipment.
- User is responsible for licensing and selecting appropriate frequencies.
- This device operates on a no-protection no-interference basis. For protection from other radio services in TV bands, a radio license is required.
- Transmitters must be installed to provide a minimum separation distance of 20 cm from all persons.
Australia Warning for Wireless:
- Operates under an ACMA class license.
- Before 31 December 2014, complies if operated in 520-820 MHz band.
- After 31 December 2014, must not be operated in 694-820 MHz band.
Important Safety Instructions:
- Read, keep, heed, and follow all instructions.
- Do not use near water.
- Clean only with dry cloth.
- Do not block ventilation openings. Install according to manufacturer's instructions.
- Do not install near heat sources or open flames.
- Do not defeat the safety purpose of polarized or grounding type plugs.
- Protect the power cord from being walked on or pinched.
- Use only manufacturer-specified attachments/accessories.
- Use only with a cart, stand, tripod, bracket, or table specified by the manufacturer.
- Unplug during lightning storms or when unused for long periods.
- Refer all servicing to qualified service personnel.
- Do not expose to dripping/splashing liquids or place liquid-filled objects on the apparatus.
- MAINS plug or appliance coupler shall remain readily operable.
- Airborne noise does not exceed 70dB (A).
- Apparatus with CLASS I construction shall be connected to a MAINS socket outlet with a protective earthing connection.
- Do not expose to rain or moisture to reduce fire/electric shock risk.
- Do not attempt to modify this product.
- Operate within specified operating temperature range.
- Dangerous voltage is present within the unit. Important operating and maintenance instructions are in the accompanying literature.
- Voltages are hazardous to life. No user-serviceable parts inside. Safety certifications do not apply if operating voltage is changed from factory setting.
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