Listen lt-800 User manual

Don't miss a single sound.
LT-800 Stationary Transmitter
Listen Technologies Corporation
8535 South 700 West, Suite A
Sandy, UT 84070-2515 USA
Phone: [phone] or 1.800.330.0891
Fax: [phone]
Email: [e-mail]
The Listen®LT-800 Stationary
Transmitter is available in
both the 72MHz and 216MHz
frequency range, with 57
channels in each frequency range. This means you are sure to find a clear signal, or can
use up to six Listen LT-800 Stationary Transmitters in the same area in the 72MHz frequency
(three in 216MHz).
Thanks to its outstanding audio quality, the Listen LT-800 Stationary Transmitter can be
used in a variety of applications. The LT-800 is connected to your main audio system, then
broadcasts that high quality audio signal to belt pack receivers, stationary receivers, or
wireless speaker/receivers. The end result – your audience can hear you better because
of better speaker placement or because they have their own belt pack and headset.
• Every Application – A choice of 72 or 216MHz
systems, complete antenna and accessory options,
and superb audio quality make Listen products ideal
for a wide range of applications.
• Works Where Others Won’t – Incorporates the
latest, most advanced technology for clear
transmission.
• Double the Range – 216MHz systems offer double
the range of more familiar 72MHz systems – up to
3,000 feet (914m).
• Superior Audio Quality – 80dB signal-to-noise ratio
... setting the industry’s sound quality standard.
• Designed for installation – Rack mountable with
remote antennas make installation easy and service
reliable.
Benefits
LT-800-072
or LT-800-216
Specify Part
Number
User Applications
• installed sound systems
• houses of worship
• government/civic
meetings
• schools
• live theater
• meeting rooms
• overflow areas
• foyers and lobbies
• dressing rooms
• nurseries
• outdoor pavilions
• judges chambers
• offices
• restaurants
• sports bars
• cafeteria areas
• convention centers
• training facilities
• trade shows
• amphitheaters
• pavilions
• parks
• zoos
• and many more!
updated 10.31.03 Listen®and the Listen logo are registered trademark of Listen Technologies Corporation

Don't miss a single sound. Phone: [phone] or 1.800.330.0891
Fax: [phone]
Email: [e-mail]
Listen Technologies Corporation
8535 South 700 West, Suite A
Sandy, UT 84070-2515 USA
1. POWER on/off on front of unit for easy access.
2. Multiple audio inputs, with input level control and dual VU meters (see Features #13 and 14).
3. Mix Level control sets level of mixed audio. VU meter shows the output level of your mixed audio.
4. Contour equalization cuts/boosts frequencies above 6kHz.
5. Multiple transmitter power settings (full, ½ and ¼) with LED indicator (control on back
panel).
6. LCD display indicates channel selected as well as electronic lock status.
7. UP/DOWN channel selection of 57 channels. Can also electronically lock on channel
to prevent tampering.
8. Earphone jack and volume control to check audio integrity of transmission source.
9. Test tone to aid in tuning.
10. Top mount, rear mount, and remote antenna options.
11. In-line power supply (LA-201 Power Supply included) attaches here.
12. Audio output jack contains mix of audio inputs for distribution to another audio device.
13. Unbalanced / phono audio input. Select either speaker or line level input (switch on back panel).
14. Balanced / female XLR / ¼ inch audio input. Select either Mic or Line level for input (switch on back panel).
updated 10.31.03
1
2
7
6
5
4
38
3
9
11
10
5
14
13
12
Antenna not
included. See
following page for
options.
Use for stationary
installations such as
houses of worship,
meeting rooms,
theaters, stadiums or
arenas for ADA
compliance.
LT-800 Features
LT-800 Stationary Transmitter

Don't miss a single sound. Phone: [phone] or 1.800.330.0891
Fax: [phone]
Email: [e-mail]
Listen Technologies Corporation
8535 South 700 West, Suite A
Sandy, UT 84070-2515 USA
LT-800 Stationary Transmitter Accessories
LA-122 Universal
Antenna Kit
The single solution for all of your
indoor remote antenna needs.
Includes: 72 and 216MHz
components; flexible and rigid
dipoles and monopole radials;
hardware for multiple mounting
configurations; and 25 feet (7.6m) of
RG58 coax cable.
LR-600 Antennas
90 Degree
Helical
(Rear Mount)
LA-123 for 72MHz or
LA-124 for 216MHz)
Rack
Mount Options
Listen Technologies Corporation (Listen®) warrants the LT-800 Stationary Transmitter to be free from defects in
workmanship and material under normal use and conditions for the useful lifetime of the product from date of purchase.
This warranty is only available to the original end purchaser of the product and cannot be transferred. Warranty is only
valid if warranty card has been returned within 90 days of purchase. This warranty is void if damage occurred because
of misuse or if the product has been repaired or modified by anyone other than a factory authorized service technician.
Warranty does not cover normal wear and tear on the product or any other physical damage unless the damage was the
result of a manufacturing defect. Listen is not liable for consequential damages due to any failure of equipment to
perform as intended. Listen shall bear no responsibility or obligation with respect to the manner of use of any
equipment sold by it. Listen specifically disclaims and negates any warranty of merchantability or fitness of use of such
equipment including, without limitation, any warranty that the use of such equipment for any purpose will comply with
applicable laws and regulations. The terms of the warranty are governed by the laws of the state of Utah, USA. Listen
will only accept returned products with prepaid shipping and with a return authorization number. To receive a return
authorization number call 1.800.330.0891 or +1.801.233.8992. Please see www.ListenTech.com or contact Listen for
complete warranty details.
Warranty
updated 10.31.03
Telescoping
(Top Mount)
LA-106 for 72MHz or
LA-102 for 216MHz
72MHz Helical
(Top Mount)
LA-101 for 72MHz
* Rack mounted units can only use rear
mounted or remote antennas
LA-326 Rack Mounting Kit*
Includes components for single and dual
rack configuration and a security cover
Antenna Kit for the
LA-326 Rack Mount Kit
LA-125 for 72MHz or
LA-126 for 216MHz
216MHz Ground
Plane
(Remote Mount)
LA-107 for 216MHz
Designed for outdoor
installation
The stationary FM transmitter shall be capable of broadcasting on 57 channels. The transmitter shall have a SNR of
80dB or greater. The output power shall be adjustable to quarter, half or full. Channel tuning shall be capable of being
locked. The device shall broadcast on both wide and narrow band channels. The device shall have an audio frequency
response of 50Hz to 15KHz, ±3dB at 72MHz, or of 50Hz to 10kHz, ±3dB at 216MHz. It shall have two mixing audio
inputs. The device shall have the following audio controls: input level, process control and an adjustable low pass
shelving filter. The Listen LT-800 is specified.
Architectural Specifications

Don't miss a single sound. Phone: [phone] or 1.800.330.0891
Fax: [phone]
Email: [e-mail]
Listen Technologies Corporation
8535 South 700 West, Suite A
Sandy, UT 84070-2515 USA
Specification LT-800-072 LT-800-216
RF Frequency Range 72.025 - 75.950 MHz 216.025 - 216.975 MHz
Number of Channels 57 (17 wide, 40 narrow) 57 (19 wide, 38 narrow)
Frequency Accuracy
Transmitter Stability
Transmitter Range
Output Power 8,000uV at 3m (20mW) 100mW (Max allowed by FCC)
Antenna
Antenna Connector Reverse BNC BNC
Compliance
System Frequency Response 50Hz - 15kHz (±3dB) 63Hz - 10kHz (±3dB)
System Signal to Noise Ratio
(A-weighted)
SQ enabled: 80dB; SQ disabled 60dB SQ enabled: 80dB; SQ disabled 50dB
System Distortion
Audio Input 1
Audio Input 2
Combined Audio Output (Mix)
Headphone Output
RF Power Selection
Set-up Controls
User Controls
Programming
Input VU Meter
Mix VU Meter
RF Power
Power
LCD Display
Test Tone
Power Supply Type
Power Supply Input
Power Supply Output
Power Supply Connector
Compliance
Dimensions
Unit Weight
Unit Weight
with LA-201 Power Supply
Shipping Weight
Rack Mounting
Temperature - Operation
Temperature - Storage
Humidity
<2% total harmonic distortion (THD) at 80% deviation
Red LED illuminates when test tone enabled
Ten step LED (eight green, two red)
FCC Part 15, Industry Canada
Rear panel. Full, ½, ¼ (see "Output Power" above).
Rear panel. Female–XLR and ¼ in combo connector, balanced, 0/-55dBu
(mic/line) nominal input level adjustable, -30/+21dBu (mic/line) maximum,
impedance 1k/20k Ohms (line/mic)
Rear panel. One Phono connector, unbalanced, -10/+10dBu (line/speaker)
nominal input level adjustable, +30dBu maximum, impedance 100k Ohms
Front Panel. Input level, mix level (modulation), contour equalization
0 to 95% relative humidity, non-condensing
3.0 lbs (1.4kg)
5.0 lbs (2.3 kg)
½ rack unit (RU)
4.4 lbs (2.0kg)
-20° to +50°C (-4° to 122° F)
-10° to +40°C (14° to 104°F)
8.0 in x 8.0 in x 7.75 in WxDxH (20.3cm x 20.cm x 4.45cm)
** All system specifications are wireless end-to-end
± .005% stability 0° to 50°C (32° to 122° F)
RF power, test tone, channel UP and DOWN,
Input 1: line or mic level, Input 2: speaker or line level.
50 PPM
Several available. See www.ListenTech.com for details
Rear panel. One Phono connector, unbalanced, 0dBu nominal output level,
+19dBu maximum, impedance 10 Ohms.
Front panel. One 3.5mm connector, unbalanced, adjustable output level,
+14dBu 250mW, maximum, impedance 32 Ohms.
Four step green LED
3,000 ft (914.4m)
UL Listed
Channel selection can be locked by holding the
UP and DOWN button 5 seconds.
In-line power supply, Listen part number LA-201
120VAC, 60 Hz, 19 watts (maximum continuous)
15VAC, 1A
Dual Ten step LED (eight green, two red)
Green LED illuminates when the unit is powered up
Channel and lock status
.02 in OD x .01in ID (5.0mm x 2.5mm), barrel type
Physical
Environmental
RF
Audio
Indicators
Controls
Power
LT-800 Stationary Transmitter
updated 10.31.03
Photographs, CAD drawings, etc. available at www.ListenTech.com.