Listen Technologies LT-800-150 User Manual Download Page 5 | Manualshive

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Package

Contents

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150 MHz Specifi

cations

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Block

Diagram

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Quick

Reference

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Setup

Instructions

7

Operating Instructions

10

Audio

Control

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Listen

SQ™

(Super

Quiet) 12

RF

Reception

Maximization

Strategies 13

Coaxial

Cable

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Channel Selection

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150 MHz Frequency Chart

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Troubleshooting

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Warranty

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Contacting

Listen

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Optional

Accessories

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LT-800 Table of Contents

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Summary of Contents for LT-800-150

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Page 3: ... you have any comments on how we might improve our products or our service we re here to listen Here s how to reach us 1 801 233 8992 1 800 330 0891 North America 1 801 233 8995 fax support listentech com www listentech com Thank you and enjoy your listening experience Best regards Russell Gentner and the Listen Team In the few instances where repairs were needed 99 of all clients indicated that t...

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Page 5: ...Instructions 7 Operating Instructions 10 Audio Control 11 Listen SQ Super Quiet 12 RF Reception Maximization Strategies 13 Coaxial Cable 13 Channel Selection 14 150 MHz Frequency Chart 15 Troubleshooting 16 Warranty 18 Contacting Listen 18 Optional Accessories 19 LT 800 Table of Contents ...

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Page 7: ...3 LT 800 Package Contents Optional Accessories See pages 19 20 Listen Part Number LT 800 150 150 MHz LT 800 Contents LT 800 150 150 MHz 12 VDC Power Supply User Manual Quick Reference Card ...

Page 8: ...impedance 100k ohms Audio Processing Process 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 Combined Audio Output Mix Input 1 and input 2 mixed output rear panel two 2 phono connectors unbalanced 10 dBu nominal output level 15 dBu maximum impedance 10 ohms Headphone Output Monitor Front panel one 1 3 5 mm 0 1...

Page 9: ...ntenna Connection On Off Compression Ratio internal adjustment Red LED Green LED Green LED CONTOUR MIX LEVEL CHANNEL SELECT On Off Low High Mid Female XLR 1 4 Combo Connect 2 Tip 3 Ring Line 1 Sleeve Mic 12VDC Mic Phantom Pwr Input 1 Level Select Mic Phantom Pwr Mic Line 10dBu 10dBu Input 2 Level Select 10dBu 10dBu Phono Phono Input Level Front Panel 400Hz TEST TONE OFF ON Red LED Test Tone Button...

Page 10: ...ors input level 10 dBu or 10 dBu Input 2 Set switch to match the level of your Input 2 audio source not used to increase or decrease level by 10 dBu Input 1 Used for balanced connection of a microphone or line level input This combination connector accepts either XLR or phono plugs Select Line Mic or Mic Phantom Power Line is balanced 0 dBu input level Mic is 55 dBu 12 VDC supplied in PH Power pos...

Page 11: ...ug the power supply into the power connector on the back panel then plug the power supply into an outlet Only use a Listen approved power supply The LA 207 an in line switching power supply is the approved power supply for this unit Connect Antenna Connect the antenna not included according to the installation instructions Only use an antenna supplied by Listen If you are connecting the antenna di...

Page 12: ...s On and Off Press the channel select Down button to toggle between SQ On and Off If the green LED is illuminated on the front panel that feature is enabled Once you have enabled or disabled the features as desired let the transmitter exit the program mode by waiting 5 seconds Program icon LED lit when SQ is enabled LED lit when Process is enabled Full power 1 2 power 1 4 power Back of LT 800 unit...

Page 13: ...ion such as from a professional audio mixer you can also use Input 1 for unbalanced connections Use Input 2 to connect to an unbalanced audio source Input 1 Input 1 offers a choice of balanced XLR or 1 4 phono connector Plug your microphone into Input 1 and move the input select switch to Mic for dynamic microphones or Mic PH Power for condenser microphones Plug your balanced or unbalanced audio s...

Page 14: ...on on page 14 for more information 2 Lock on Channel Once you determine your transmit channel you can lock the transmitter on that channel To lock on a channel hold the Channel Select Up button for 3 seconds until the padlock icon appears on the display To unlock repeat this process and the padlock icon will disappear 3 Test Tone if necessary To broadcast a test tone press the test tone button Thi...

Page 15: ... of the other audio source Adjust the input level until the left VU meter s occasionally illuminate the red LEDs Illumination of the red LEDs indicates the unit is in limiting Limiting is required so that the unit does not over modulate the transmitter If you don t want any audio limiting to occur make sure the red LEDs never illuminate If you want a highly limited signal turn the audio gain up so...

Page 16: ...ufacturers Listen is the only manufacturer using SQ Technology You expect that end users will bring and use their own receivers that don t have the SQ function NOTE See page 8 to enable or disable SQ Super Quiet Process Mode Process mode is used for Audio Gain Control AGC With the process mode enabled the LT 800 will automatically adjust for inconsistent signal input levels by raising or lowering ...

Page 17: ...and RG 8 cables You may purchase a cable that is better or worse than this value Please check with the cable vendor or manufacturer for exact specifications For proper and dependable operation Listen receivers need to receive a strong and consistent signal from the originating transmitter Note that on portable receivers the headset wire is the receiving antenna The following strategies should be u...

Page 18: ... widest channel spacing It is recommended that adjacent channels be spaced at least 300kHz 2 Distributed Spacing If you are using transmitters that are spread out over space you can achieve more simultaneous broadcast channels However it is critical that your receiver s be located as close to its transmitter as possible You can use adjacent channels see frequency chart on page 15 in this case as l...

Page 19: ...00 06 151 800 07 150 850 08 150 950 09 151 000 10 151 050 11 151 100 12 151 150 13 151 250 14 151 300 15 151 350 16 151 400 17 151 450 18 151 550 19 151 600 20 151 650 21 151 700 22 151 750 23 151 850 24 151 900 25 151 950 26 152 000 27 152 050 28 152 150 29 152 200 30 152 250 31 152 300 32 152 350 ...

Page 20: ...el select switches in the proper position You may be providing too much audio level for the input stage to handle Make sure the SQ mode is set correctly on both the LT 800 and the receivers you are using If your receivers do not have SQ make sure the SQ mode is turned off see page 8 There is hum in the audio Make sure you have properly grounded the audio source to the LT 800 Check the connections ...

Page 21: ... or a close channel to the one exhibiting interference Try different channels until you find a clear channel End users are adjusting the unit First lock the channel by pressing and holding the channel select UP button for 3 seconds Consider removing the Input Mix Level and Contour knobs You can order a rack mount kit from Listen which offers a security cover that will limit access to the unit Seve...

Page 22: ... 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 w...

Page 23: ...single and dual rack configuration and a security cover NOTE Rack mounted units cannot use the LA 134 top mounted antenna LA 132 Universal Antenna Kit LA 134 Telescoping Top Mounted Antenna 150 MHz LA 326 Universal Rack Mounting Kit LA 135 Antenna Kit for Rack Mount LA 133 90 Helical Antenna 150 MHz ...

Page 24: ...r LA 112 RG 58 50 Ohm Coaxial Cable per ft LA 113 RG 8 50 Ohm Low Loss Coaxial Cable per ft LA 261 Lavalier Microphone LA 262 Over the Head Microphone LA 270 Noise Canceling Microphone LA 274 Hand Held Microphone LA 276 Collar Microphone LA 277 Conferencing Microphone LA 278 Behind the Head Microphone LA 279 Over the Ear Microphone Presentation Style LA 280 in to 3 5 mm Microphone Adapter for LT 8...

Page 25: ...21 Notes ...

Page 26: ...22 Notes ...

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Page 28: ...ration 14912 Heritagecrest Way Bluffdale Utah 84065 4818 U S A 1 801 233 8992 1 800 330 0891 North America 1 801 233 8995 fax www listentech com 2009 Listen Technologies Corporation All Rights Reserved 09162009 Printed in China ...

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