Listen Tech MH-800-072-01 Meeting House Transmitter, 72.025 - 75.950 MHz

The MH-800-072-01 is an LT-800-072-01 with customized settings. The MH-800 has outstanding audio quality and can be used in a variety of applications. The MH-800 connects to the main audio system, to broadcast a high quality audio signal to receivers distributed to the meeting house audience. The end result is hearing loss audience members can hear and understand the message better because they have their own receiver and headset. The signature Look & Listen LCD shows channel, lock, programming and RF power.

Key Features

• Superior audio quality - setting the industry’s sound quality standard
• 57 channels
• 100% Digital - Listen transmitters are digitally-tuned so the transmission won’t drift
• Use up to six (6) simultaneously on 72 MHz
• Look & Listen LCD shows channel, channel lock, and programming information
• Balanced/Unbalanced Inputs - you can interface with any audio source on the market
• Designed for installation - rack mountable with optional remote antennas make installation easy and service reliable
• Auto Processor - to condition the audio for voice/music prior to transmission
• VU level meter and test tone - simply makes the installation easier to set-up
• Many accessory options make Listen products ideal for a wide range of applications

Technical Specifications

Audio
Frequency Response
50 Hz - 15 kHz (?3 dB)
Signal-to-Noise Ratio
SQ enabled 80 dB, SQ disabled 60 dB
Audio Input 1
Rear panel, one (1) Female XLR or 1/4 in combo connector, balanced, 0 / -55 dBu (line/mic) nominal input level adjustable, -30 / +21 dBu (line/mic) maximum input level, impedance 20k / 1k ohm (line/mic), phantom power +12 VDC
Audio Input 2
Rear panel, two (2) phono connectors, unbalanced, -10 / +10 dBu nominal input level adjustable, +30 dBu maximum, impedance 100k ohm
Audio Processing
Compression can be turned on/off, slope internally adjustable from 1:1 to 4:1, default 2:1
Contour
Cuts and boosts frequencies above 5 kHz
Distortion
< 2% total harmonic distortion (THD) at 80% deviation
Audio Output
Input 1 and input 2, mixed output (rear panel), two (2) phono connectors, unbalanced, -10 dBu nominal output level, +15 dBu maximum, impedance 10 ohm
Headphone Output
Front panel, one (1) 3.5 mm (0.14 in.) stereo connector, unbalanced, adjustable output level, +3 dBu maximum, impedance 10 ohm
Controls
User Controls
Front Panel: Power, test tone on/off, channel up/down, input levels, mix level, contour, monitor volume control Rear Panel: Input 1 Level, (Line, Mic, Mic-Phantom Power), Input 2 level (-10 / +10 dBu), RF power level (low, mid, high)
Internal Adjustments
Compression ratio for audio processor
Programming
SQ on/off, process on/off, channel lock
Indicators
LCD
Channel designation, lock status, RF power level, programming (front panel)
Audio Input Status LEDs
Indicates Input 1, Input 2, and Mix audio levels; 10 segment LED's (8 green, 2 red)
Processing
Indicated by a green LED when on (front panel)
Test Tone
Red LED illuminates when test tone is enabled.
RF Power
Indicated on the LCD (low, mid, high)
RF
Frequency Range
72.025 - 75.950 MHz
Number of Channels
17 wide band, 40 narrow band
Frequency Accuracy
.005% stability +32 to +122 F (0 to +50 C)
Antenna Type
Various antennas available
Transmitter Stability
50 PPM
Transmission Range
Up to 1,500 ft. (457 m)
Antenna Connector
BNC
Output Power
80,000 uV at 3 m
Number of Simultaneous Transmitters
6
Power
Power Supply
In line power supply, listen part number LA-207 (Line cord is determined by the each Country's AC power standards)
Power Supply Input
100-240 VAC, 50-60 Hz, 0.4 A
Power Supply Output
12 VDC, 1.3 A, 15.6 W
Power Supply Connector
0.02 in (5.0 mm) OD, 0.01 in. (2.5 mm) ID, barrel type
Compliance
UL, CE, GS, T?V, RoHS
Physical
Width
8.50 in. (21.5 cm)
Height
1.75 in. (4.5 cm)
Depth
9.13 in. (23 cm)
Color
Dark Grey with white silk screening
Unit Weight with Power Supply
3.5 lbs. (1.6 kg)
Shipping Weight
6.0 lbs. (2.7 kg)
Rack Mounting
One (1) rack space height, 1/2 rack space wide. One (1) or two (2) transmitters can be mounted in one rack space, optional rack mount (LA-326)
Weight
2.6 lbs. (1.2 kg)
Environmental
Temperature - Operation
-10 C (14 F) to +40 C (104 F)
Temperature - Storage
-20 C (-4 F) to +50 C (122 F)
Relative Humidity
0 to 95% relative humidity, non-condensing
Compliance
Safety
RoHS
RF
FCC Part 15, Part 90, Industry Canada