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Shure LX Wireless System with Beta 87 Microphone
Includes: (1) LX2/BETA 87 Handheld Transmitter with Beta 87A Supercardioid Microphone (1) Single and Dual Rack Mounting Kit (1) LX4 MARCAD Diversity Receiver (1) 9V Duracell¬ Battery (1) PS40 Power Supply (1) Swivel Adapter (2) 1/4 Wave Antennas (1) Zippered Transmitter/Accessory Bag (1) WA555 Grip/Switch Cover for LX2
LX Wireless System with Beta 87 Microphone Features
Exclusive Shure MARCAD Circuitry (LX4): MARCAD (MAximum Ratio Combining Audio Diversity) circuitry constantly monitors signals from both receiver sections and combines them to create a single output signal. The result is improved reception and exceptional freedom from dropouts.
Half-Rack Receiver Size: The LX3 and LX4 receivers interface with the HR (half-rack) format, and are supplied with both single and dual rack-mount hardware. An optional WA503 accessory kit lets you front-mount antennas.
Power/Battery Fuel Gauge: The LX1 and LX2 transmitters include a 3-light gauge that indicates both "power on" and the amount of battery life remaining. (Refer to the Checking the Transmitter Battery section.)
Dual RF Level Meters (LX4): Instead of a conventional single RF meter, the LX4 receiver has 2 meters, one for each antenna. The dual meters indicate received signal strength at each antenna, and make it easier to identify and roubleshoot RF "dead spots."
Audio Metering: A 5-light audio meter helps to optimize transmitter gain setting and lets you monitor audio level during operation.
True Guitar Sound: Guitar players demanding the highest degree of sound quality and reliability will appreciate the low noise and uncolored sound of the LX Wireless System.
Noise Squelch: This circuit analyzes signal quality instead of signal strength. This virtually eliminates the possibility of annoying noise bursts coming through your receiver.
Body-Pack Transmitter Belt Clip: The belt clip has a wider contact surface for a better grip, and firmly holds thinner, more slippery materials. It can be removed or inverted for special positioning.
Grip/Switch Cover Accessory: The unbreakable WA555 grip/switch cover accessory, supplied with all LX2 hand-held microphone-transmitters, prevents accidental movement of the power and mute switches, and provides a "grip" feel.
Compact Power Adapter: The supplied ac power adapter incorporates small, in-line transformers that save space on AC power strips. It also has mounting tabs so it can be secured to any surface, as well as locking DC power connectors to prevent accidental disconnection from the receiver.
Technical Description
RF Carrier Frequency Range:
169.445 to 240.000 MHz (available frequencies depend on the applicable regulations in the country where the system is used)
Working Range: 91 m (300 ft) under typical conditions.
*Note: Actual working range depends on RF signal absorption, reflection and interference.
Audio Frequency Response: 50 to 15,000 Hz, +/- 2dB
*Note: Overall system frequency response depends on the microphone element.
Audio Output Level (+/-15 kHz deviation, 1 kHz tone):
XLR connector (into 600 ohm load): 0 dBV (line), -20dBV (mic)
1/4 in. connector (into 3 kOhm load: -8.8 dBV)
Gain Adjustment Range:
LX2: 25 dB
Impedances:
LX4 (output): 150 ohms (XLR); 3 kOhm (1/4 in. phone jack)
Modulation:
+/- 15 kHz deviation compressor-expander system with pre- and de-emphasis
RF Power Output:
LX2: 50 mW maximum (complies with FCC and IC regulations)
Dynamic Range: >102 dB, A-weighted
RF Sensitivity: 0.45 mV for 12 dB SINAD (typical)
Image Rejection: 80 dB typical
Spurious Rejection: 75 dB typical
Ultimate Quieting (ref. 15 kHz deviation): >100 dB, A-weighted
Audio Polarity:
Positive pressure on microphone diaphragm (or positive voltage applied to tip of WA302 phone plug) produces positive voltage on pin 2 with respect to pin 3 of low impedance output and the tip of high impedance 1/4 in. output.
System Distortion (ref. +/- 15 kHz deviation, 1 kHz modulation): 0.3% THD typical
Power Requirements:
LX2: 9V alkaline battery (Duracell MN1604 recommended); 8.4V Nicad optional
LX4: 12.5 - 18 Vdc (negative ground), 400mA
Battery Life: 18 to 20 hours (with Duracell MN1604 9V alkaline battery)
Operating Temperature Range:
-20 to 50 degrees C (-4 to 122 degrees F). NOTE: Battery characteristics may limit this range.
Overall Dimensions:
LX2/87, LX2/BETA 87 (L x Diameter): 216 x 51 mm (8-1/2 x 2 in.)
LX4 (H x W x D): 43 x 214 x 183 mm (1-11/16 x 8-7/16 x 7-3/16 in.)
Net Weight:
LX2/87, LX2/BETA 87: 193 g (6.8 oz.), without battery
LX4: 1,105 g (2 lbs., 7 oz.)
Shure LX Wireless System with Beta 87 Microphone
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