User`s Manual - Performance Audio
Contents
1.2. User s Manual LR 100 Stationary Receiver Power Amplifier LR 100 Mute Squelch Power RF Power Channel Seek 000 O O lo Listen dV gt Headphone Speaker www ListenTech com Listen Technologies Corporation 8535 South 700 West Suite A Sandy Utah 84070 2515 USA Telephone 1 801 233 8992 Toll Free North America 1 800 330 0891 Fax 1 801 233 8995 E mail info listentech com Don t miss a single sound Listen Dear Valued Customer Thank you for choosing Listen All of us at Listen are dedicated to providing you the hightest quality products and prompt efficient customer care Our products are manufactured in an ISO 9000 factory that has been independently certified to the highest quality standards We stand ready to answer any questions you might have during installation or in the operation of our products Should there be any prob lems with your Listen products we are ready to help you in any way we can Should 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 o L 2 0 z O 9 7 Telephone 1 801 233 8992 Fax 1 801 233 8995 Toll Free North America 1 800 330 0891 E Mail support listentech com Web www ListenTech com Thank you and enjoy your listening experience Best regards The Listen Team LR 100 Package Contents Listen
3. 38 9 72 9750 20 20 20 EO 35 39 74 6250 33 33 33 E3 36 40 74 6500 am 20 74 6750 34 34 34 EA 37 42 74 7000 l l 38 43 21 O 74 7250 35 35 35 5 39 44 74 7500 45 2 747750 36 36 36 6 40 46 75 2250 37 37 37 7 41 47 75 2500 48 28 75 2750 38 38 38 B 22 49 75 3000 J J y Ji J 43 50 24 P 75 3250 39 39 39 J9 55 51 75 3500 52 25 75 3750 20 20 20 Jo 45 53 75 4000 R R R R R 52 26 Q 75 4250 21 21 21 RI 46 55 75 4500 56 27 75 4750 22 22 22 R2 47 57 75 5000 F E F f F 48 58 28 J 75 5 75 5250 28 28 28 F3 49 59 75 5500 60 2 75 5750 24 24 24 F4 50 61 75 6000 5 5 5 S 62 30 K 756 75 6250 25 25 25 5 51 63 75 6500 64 31 75 6750 26 26 26 6 52 65 75 7000 S S S G 6036 32 L 757 75 7250 27 27 27 G7 5467 75 7500 68 33 75 7750 28 28 28 G8 55 69 75 8000 T T T T 70 34 M 75 8 75 8250 29 29 29 19 56 71 75 8500 072 35 75 8750 30 30 30 TO 57 73 75 9000 H H H HH 68701 36 N 759 75 9250 31 31 31 HI 59 75 Parenthesis indicate T35 and T20 narrowband 16 75 9500 76 37 NOTE Wideband frequencies in highlighted rows 75 9750 32 32 32 H2 60 77 216MHz Compatibility Chart E ON lt I N O O 3 o o ie x Q gt Q Frequency Phonic Light MHz Listen Ear Comtek Phonak Wiliams Gentner CSI AVR Speed 216 0125 1A 1 Col NO1 216 0250 2A 41 41 41 1 1 216
4. The audio is muted occasionally Check to see if the unit is squelching indicated by the squelch LED In this case either improve the RF signal path or adjust the squelch setting for less squelch sensitivity see page 9 hear noise coming from the receiver with my audio You may have inadequate RF signal strength Adjust the positioning of the antennas Make sure the transmitter is on high power You may be experienc ing interference try a different channel Make sure the transmitter and receiv er are on the same channel The channel is often accidentally changed Lock the unit on channel by pressing and holding the SEEK button for five seconds The padlock symbol is illuminated on the LCD There is no audio Make sure the transmitter and the receiver are on the same frequency band 72MHz or 216MHz and channel Make sure the RECEIVE and or AUX trim adjustments are turned clockwise Make sure the unit is not MUTED indicat ed by the MUTE LED Make sure the unit is wired correctly Make sure the squelch adjustment is set correctly The audio is distorted Make sure the transmitter and receiver are on the same channel Make sure that the SQ switch is set the same way either ON or OFF for both the trans mitter and receiver Make sure the audio level is not set too high For the 216MHz version only make sure you are not too close to the transmitter with in 40 feet The OUTPUT level is low Make sure the MIC LINE switch is in
5. LINE Adjust the RECEIVE or AUX input levels There is no audio on the speaker Make sure the speaker selection switch is in the correct position Ensure that you have a good speaker can t hear AUX audio on the OUTPUT Move the OUTPUT audio selection switch to either RX AUX or RX or AUX depending on your application cannot change channels The unit is locked on channel this is indicated by the padlock icon on the dis play Press and hold the SEEK button for five seconds to toggle the lock off The power switch does not work This is normal when using the 12 VDC power on the rear terminal block e en ie D 2 gt e 9 Q Ken 2 o gt ej N N g N e Q m 12 Listen SQ Improving Your Listening Experience We are accustomed to listening to low noise high fidelity audio delivered via CD DVD etc FM radio systems such as those made by Listen are inherently noisy compared to most sound systems To reduce noise of our systems Listen now offers a noise reduction technology called ListenSQ Both the transmitter and receiver must have SQ on to achieve the desired results SQ is now available on new Listen systems including the system you received in this shipment If you are planning to use this product with older Listen systems or equipment not manufactured by Listen you should disable SQ Your Listen equipment has been shipped to you with the SQ featur
6. ListenTech com for details Antenna Connector BNC Squelch Continuously adjustable via front panel trim pot Compliance FCC Part 15 Industry Canada All system specifications are wireless end to end System Frequency Response 63Hz 15kHz 3dB 63Hz 10kHz 3aB System Signal to Noise Ratio A SQ enabled 80dB SQ disabled A weighted SQ enabled 80cB SQ disabled 60dB 50dB System Distortion lt 2 total harmonic distortion THD at 80 deviation Auxiliary Input to Output Frequency Response 25Hz to 20kHz 3dB SNR 280GB Distortion lt 0 2 Rear panel One Female XLR 1 4 in combo connector balanced OdBu nominal input level adjustable 13dBu maximum impedance 600 Ohms Rear panel Two Phono connectors unbalanced 10dBu nominal input level adjustable 7dBu maximum impedance 10k Ohms Rear panel One Male XLR balanced OdBu nominal output level 16dBu maximum impedance 2k 10 Ohms line mic Rear panel Two Phono connectors unbalanced 10dBu nominal output level 2dBu maximum impedance 2k Ohms Front panel One 3 5mm stereo connector unbalanced adjustable output level 16dBu maximum impedance 32 Ohms 120mW Rear panel One detachable terminal block bridged adjustable output level 15 10 watts peak RMS continuous power with 4 Ohm load Antenna Balanced Auxiliary Input Unbalanced Auxiliary Input Balanced Output Unbalanced Output Headphone Output Speaker Output Set u
7. level adjustment Receive Aux Level Adjust o SQ to activate move Switch to ON position This switch should be tumed OFF if any of your equip ment does not have SQ capability See Listen SQ on Page 14 for more information AUXILIARY audio level adjustment o Ligen pr UP and DOAN channel tuning j ae see get come o mono or below stereo headphone here 3 5 mm plug mini SPEAKER control adjusts the volume of your loudspeaker con nected to the LR 100 and or the headphone LR 100 LCD Panel Details RF Signal Strength Indicates the currently tuned channel a p 000o listen BI PGM when sho E ing the unit is in GM O P 10 la E Program mode to lock out unwanted channels from user access lt When the padlock is visi ble the channel is locked Press and hold SEEK for 5 seconds to unlock or lock VO while in Program mode this symbol indi cates that a channel is locked out and will not be available to the user Press SEEK to toggle channels between Locked Out and non Locked Out modes D 3 O o A O O Q O c o o 9 c x Q 5 Gg Quick Reference LR 100 Rear Panel Optional 12V power connect optional battery or 12VDC source here The battery can be recharged see page 5 SPEAKER connection connect a 4 Ohm or CONTROL remote control of UP DOWN and MUTE functions Balanced OUTPUT Male XLR 0 or 40dBu nomina
8. 0375 3A 2 2 216 0625 1B 3 21 216 0750 2B 42 42 42 2 10 216 0875 3B 4 4 216 1125 1C 5 5 C05 216 1250 2C 43 43 43 A 3 6 216 1375 3C 6 22 216 1625 1D 7 23 216 1750 2D 44 44 44 B 4 14 216 1875 3D 8 8 216 2125 1E 9 9 Co9 NO9 216 2250 2E 45 45 45 5 2 216 2375 3E 10 24 216 2625 1F 11 25 216 2750 2F 46 46 46 D 6 11 216 2875 3F 12 12 C12 N12 216 3125 1G 13 13 216 3250 2G 47 47 47 E 7 7 216 3375 3G 14 26 216 3625 1H 15 27 216 3750 2H 48 48 48 F 8 15 216 3875 3H 16 16 C18 N18 216 4125 216 4250 216 4375 216 5125 216 5250 216 5375 216 5625 216 5750 216 5875 N64 216 6125 216 6250 216 6375 216 6625 216 6750 216 6875 216 7125 216 7250 216 7375 216 7625 K 13 16 C29 L 14 19 216 7750 15 4 C32 C33 9 216 7875 216 8125 N72 216 8250 216 8375 216 8625 216 8750 21 58 58 58 216 8875 3T 36 86 216 9125 1U 37 77 C37 N77 216 9250 2U 59 59 59 17 216 9375 3U 38 88 216 9625 1V 39 79 C39 216 9750 2V 60 60 60 5 216 9875 3V 40 80 C40 N80 NOTE Wideband frequencies in highlighted rows 17 Q 9 e Q o e O o E O O Compliance Notice Listen s LR 100 Stationary Receiver Power Amplifier This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions 1 These devices may not cause harmful interference and 2 these devices must acce
9. 0Hz operation Do not use any other AC power supply Use of any non Listen supplied power supply will void the warranty Battery use is permitted see below Plug the power supply into the back of the unit at the connector labeled POWER Now connect the power supply to power Battery Operation To operate the unit on a battery or 12VDC power supply connect to the rear detachable terminal block as follows kh Pin 3 12VDC ii Pin 4 Ground Please note that when operating on the 12VDC bat tery supply the POWER switch is bypassed and the unit is always on You can optionally charge batteries by also supplying power to unit with the batteries connected In this case the batteries are trickle charged at a rate of 18 36 mA You should only use rechargeable type batter ies CAUTION Attempting to charge non rechargeable batteries may result in explosion and or fire e Detachable Terminal Block Wiring Battery Control a PRA S 9 5 S RS gg E 152838s8S B 509 9 9 9 9 Pin 1 Speaker Pin 2 Speaker Pin 3 Ground for Battery or Power Source connection Pin 4 12VDC Battery or Power Source Pin 5 UP remote control function Pin 6 DOWN remote control function Pin 7 MUTE remote control function Pin 8 Common for remote control function LR 100 Installation Installation Audio Connections See Quick Reference on pages 3 4 OUTPUT Audio The OUTPUT audio section is composed of an OUT PUT a
10. 5 CE 8 2 Detachable o o Qo ooo Terminal Common Electronic Block Ground Switch Power O On Off Up External Power 115VAC Supply gt gt o oe o xi O HH Mute LA 201 O Down 7 5 Y O Power Supply HF CPU Module O Seel Aux Speaker Listen LCD Display e Jutpul anw 0 Remote 35MM Headphone Antenna Stereo Flexible helixal or NY o antenna provided A Mic internal e O O Male XLR Output Audi o Processi ng Lg a O Balanced ane RF Receiver dic i X i O He gt m RX o n O eceive Level Output RX or Aux Phono Unbalanced Squelch O 10 dB Output e O p Select quelc Sensitivity 7 Electronic Switch vu Meter Auxiliary Xam Level Combo cc Auxiliary Input Balanced O 0 dBu e O Phono Auxiliary Input Unbalanced 10 dBu LR 100 Setup Instructions LR 100 Setup Instructions If you are using the LR 100 s power amplifier make sure the unit is given sufficient room around the ventilation holes If you are rack mounting the LR 100 use the optional LA 326 rack mounting kit This kit allows for single and dual rack mounting and comes with a security cover For mounting on vertical or horizontal surfaces use the optional L bracket mounting kit part number LA 327 Powering the Unit Please note if the unit will not power up see Resetting After an Overload Condition page 14 AC Power Operation The unit comes with a UL listed inline power supply designed for 115VAC 6
11. Part Number lt LR 100 072 72MHz or LR 100 072 for 72 MHz LR 100 216 216MHz or LR 100 216 for 216 MHz 120 VAC Power Supply LA 123 90 Degree Helical Antenna 72MHz or LA 124 90 Degree Helical Antenna 216MHz Allan Wrench Warranty Card User Manual Optional Accessories See page 20 i Listen and the Listen Logo are registered trademarks of Listen Technologies Corporation LR 100_2004_08_03 2003 Listen Technologies Corporation All Rights Reserved Table of Contents Architectural Specifications o 0oooooooocorrorrrrrcrrrrcorrr mo 2 SDeCIfICatIOTIS v dre A hed te Rr ee phen e eda eh E s 2 Ouick R terence X bed tal ch E wists A ate een dae 3 Block Diagramme oie inte see bth A asa a EAN 5 SUP ear eee Ue e ketal oe Su tM ingles od uda tee 6 Installation 7 Speaker Connection hc oi td 8 Antenna Installations 4 35 I Sheree a ne earn a Fus 8 Program mine 433 51st hak is id Medo aed ero ees 9 Squeleh Adjustment 0d eh Sheds A aed Ma A 10 Troubleshooting Viatri ss ee a tet ed aie eee NEL MS ER ERA S 11 Basten SS OS yh a Bh Steels A A RUE d 12 Channel Selection oo do ti ET EP CE ee d 13 RF Reception Maximization Strategies 0 0 eee ee eee eee 14 Resetting After an Overload Condition 0 0 e ccc cece eens 14 Coaxial Cable iii re reed tue le ad a hee PPP 15 72 MHz Frequency Compatibility Table eese 16 216 MHz Frequency Compatibility Table o ooooooooomoomrom 17 Complianc
12. RF signal from the transmitter the LR 100 will not meet the needs of your installation You can use the RF POWER indication on the LCD to provide a rela tive RF signal strength You should see four or more dots displayed on the LCD for best results Using the supplied helical antenna Connect the antenna to the rear BNC connector and orient the antenna vertically If reception is from the transmitter is not adequate consider using a remote antenna see below or place the LR 100 at an improved location to improve the signal strength See RF Reception Maximization Strategies on page 15 for more information Using a remote antenna For better reception in longer broadcast range applica tions you should use a remote antenna A remote antenna will allow you to get the antenna higher in altitude and in a position that is clear of obstructions Please refer to the specific antennas instructions for installation Also refer to Strategies for Maximizing RF Reception on page 15 for additional information CAUTION When installing antennas ensure the antenna is clear of power lines NOTES If the RF signal to the 216MHz model is too high the audio will be distorted This may happen if the LR 100 is within 40 feet of the LT 800 216 trans mitter Consider reducing the output power of the transmitter or optionally removing the antenna on the LR 100 there is sufficient internal antenna inside the LR 100 to receive an adequate signal fro
13. e Notice cl A SS 18 ECO Statement ivi A A Ga RP ES 18 Warranty ove A ETS AO A A ds 19 ptional ACCessorIEs se mc A O dada 20 Q o o 9 2 O m D m o em o o e 9 O o o eo Specifications Architectural Specifications The FM stationary receiver power amplifier receiver shall be capable of receiving on 57 wide and narrow band channels in the frequency ranges of either 72M Hz or 216M Hz The receiver shall be programmable to electronically lock out unneeded channels T he device shall have an adjustable squelch with an LED indica tion The frequency response of the device shall be within 3dB from 63H z to 15K H z at 72M Hz or within 3dB from 63H z to 10kH zat 216M Hz The signal to noise ratio shall be 80dB or greater The device will have an integrated power amplifier capable of driving an 8 O hm speaker The device shall be rack mountable and shall have the capability of a remote antenna The device shall incorporate an LCD display that indicates channel and RF signal strength The Listen LR 100 is specified Specifications ETer Tedii efe lio 0 LR 100 072 LR 100 216 RF Frequency Range Number of Channels 57 17 wide 40 narrow 57 19 wide 38 narrow Sensitivity 6uV typical 1 UV maximum for 12dB SINAD Frequency Accuracy 005 stability 0 to 50 C 32 to 122 P Flexible helical Flexible helical 9 0 in 23 cm included 5 5 in 14 cm included Optional Antennas Several available See www
14. e enabled You may need to disable the SQ function for one or more of the following reasons 1 You are using your new Listen system with older version Listen equipment that does not have the SQ function 2 You are using your new Listen system with equipment supplied by other manu facturers 3 You expect that end users may bring and use their own receivers that don t have the SQ function SQ Summary Improves noise perform ance by at least 20dB SQ is NOT compatible with older version Listen products SQ is NOT compatible with other manufacturers products SQ is NOT squelch To work properly SQ must be enabled for both the transmitter and receivers SQ can be disabled to per mit operation with older Listen products or other manufacturers products Channel Selection It is highly recommended that after channel selection has been achieved you lock the channel so that it cannot be changed by the user To accomplish LOCK on the LR 100 press the SEEK button for 5 seconds Repeat the process to unlock It is important to choose channels that are free from interference to achieve proper operation of your Listen equipment This process is trial and error Before turning on the transmitter listen to the wide band channels lettered channels at 72MHz and channels that start with a 2 for 216MHz Listen to the audio through the headphone or via the speaker Choose a channel with the least amount of inter face U
15. ed 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 19 Q O 2 lt Optional Accessories o o O o o Q o o o e 9 a O e Antenna Kit for the LA 326 Rack Mount Kit LA 125 for 72MHz and LA 126 for 216MHz 216MHz Ground Plane Remote Mount LA 122 Universal outdoor Antenna Kit LA 107 for 216MHz The single solution for all of your indoor remote antenna needs Includes 72 and 216MHz compo nents flexible and rigid dipoles and monopole radials hardware for mul tiple mounting configurations and 25 feet 7 6 m of RG58 coax cable LT 800 Rack Mount Options LA 326 Rack Mounting Kit LA 327 L Bracket Mount Kit Includes components for single and dual rack j f Use to mount on any flat surface configuration and a security cover Expansion Speaker LA 316 Expansion Speaker 10 Watt 2 channel speaker See www ListenTech com LR 100 cfm fro additional features 20 specifications and accessories www ListenTech com Listen Technologies Corporation 8535 South 700 West Suite A Sandy Utah 84070 2515 USA Telephone 1 801 233 8992 Toll Free North America 1 800 330 0891 Fax 1 801 233 8995 E mail info ListenTech com
16. hat audio is directed to the power amplifier With the switch in the OUTPUT position the OUTPUT audio same audio that is on the OUTPUT audio connectors is directed to the power amplifier With the switch in the AUX position only AUXILIARY input audio is directed to the power amp This allows you to use the power amp separate of the RECEIVER audio if desired NOTE When the speaker switch is in the OUTPUT position and the MUTE control is enabled indicated by the illumination of MUTE LED the speaker out put is also muted Connection to the speaker is achieved through pins 1 and 2 on the detachable terminal block Strip the speaker wires rotate the screws on the terminal block counter clockwise insert the wires and then tighten the screw clockwise until the wire is secure in the con nector block You may connect any parallel series combination of speakers that produces an impedance of 4 Ohms or greater EXAMPLE If you have two 8 Ohm speakers you can connect these in parallel to produce a 4 Ohm load to the power amp The SPEAKER level control on the front panel adjusts the level of the speaker The front panel headphone jack is in parallel with the speaker level Connect any mono or stereo headphone to this 3 5mm jack Adjust level with the SPEAKER volume knob LR 100 Antenna Installation Installation Antenna A properly installed antenna is critical to the opera tion of the LR 100 Without a strong and consistent
17. he channel will NOT be displayed to the user To reverse the lock out process press the SEEK button on locked out channels When you have completed programming the unit don t press any key for 10 seconds and the unit will exit the programming mode y O Q Q 3 3 gt Q Squelch Adjustment j c 0 E EZ El o 9 o O o Squelch unit will be unsquelched by interference However The squelch adjustment is important to ensure the you are also increasing the chances that the signal receiver audio is muted when no signal is present You coming from the transmitter will be squelched want to set the squelch adjustment for the highest set Thus if the RF signal from the transmitter dips just ting without squelching the incoming signal slightly someone walks in front of the antenna To set the squelch control you will experience momentary squelching of the audio a Turn the transmitter OFF b Listen to the receiver audio on the speaker or head CAUTION Ensure proper setting of the squelch phone Turn the audio level down in the begin di M adjustment to prevent user ear damage and unwanted ning radio noise Users will find unsquelched receiver noise c Adjust the squelch adjustment clockwise until the Mp E very objectionable squelch LED goes off not illuminated You will hear radio noise now This is the audio you want to squelch mute when the transmitter is off d Now adjust the squelch set
18. ing antennas Move transmitting and receiving antennas away from metal objects Place the transmitting antenna as high as possible Orient both transmitting and receiving antennas vertically For 216MHz unit only consider using a gain antenna such as a Yagi type antenna mmo ao CAUTION When installing antennas ensure the antenna is clear of power lines NOTE If the RF signal to the 216MHz models is too high the audio will be dis torted This may happen if you are within 40 feet of the LT 800 216 transmitter Coaxial cable connectors and optional antenna mounting kits are available from Listen Visit www ListenTech com or ask your dealer for details Resetting After an Overload Condition In an overload condition the LR 100 will go into a protective state to protect the unit and power supply from excessive current and heat This condition will occur if the speaker terminals are shorted to each other or if they are shorted to the chassis for over 15 seconds In this condition the LR 100 will no longer function normally If the LR 100 stops functioning normally do the following 1 Turn the unit off and unplug it from power If you are operating the LR 100 with an external 12VDC source such as a battery disconnect the power source from the unit 2 Remove the short to the speaker terminals 3 Wait 30 seconds or longer 4 Plug the unit back in and turn the power on The LR 100 should now function normally If the unit i
19. l ANTENNA connection attach supplied 90 degree hare helical antenna or optional remote antenna here Uses standard 50 Ohm BNC connector greater loudspeaker All functions are momentary closures to Unbalanced AUXILIARY common input phono 10dBu output phono 10dBu nominal nominal N f Audio Output Line G O O 2A Fuses Internal Aux Power Two internal 2 amp fast blow fuses Connect provided power supply ere SPEAKER selection switch this selects the audio being routed to the speaker amplifier to either the OUTPUT or AUXILIARY audio MIC LINE level switch reduces the balanced OUTPUT audio gain by 40dB in Mic mode ee Female ake Ya in connector 0dBu nominal AUDIO OUTPUT selection For RECEIVE audio only select RX ONLY For RECEIVE audio mixed with AUXILIARY audio select RX AUX For RECEIVE audio when not squelched and AUXILIARY audio when squelched select RX or AUX LR 100 Block Diagram O O 2 J Q Q 3 External Battery Remote Control Speaker 12 VDC 3 4 5
20. least 150 feet away Notes in regard to using 72MHz and 216MHz systems i 72MHz in a secondary frequency band This means that other transmitters are licensed to use these frequencies Thus you may experience interference from paging transmitters and other type transmissions You will need to find a clear channel by listening to all the wide band channels ii 216MHz is a primary frequency band and no other types of transmissions are authorized to use it Thus you will find the highest probability of clear channels in this band However you may experience intermodulation of the TV Channel 13 aural carrier if there is a channel 13 transmitter in your area and you are close to the transmitter If you cannot find a clear channel in 216MHz band due to channel 13 it is recommended that you switch to a 72MHz system 13 0 Q N Q a N e 9 o Q o Q a LL oz RF Reception Maximization Strategies For proper and dependable operation Listen receivers should receive a strong and consistent signal from the originating transmitter The following strategies should be used maximize this signal a When designing and installing your system keep in mind that the location of both the transmitting and receiving antennas is critical to maximizing signal strength b Eliminate or minimize obstructions between the transmitting antenna and the receiving antenna Minimize the distance between the transmitting and receiv
21. m the trans mitter LR 100 Programming To make setup adjustments remove the two hex screws that secure the front panel security cover Setup VU Meter The front panel VU meter indicates the audio level of the OUTPUT signal When making input audio level adjustments ensure that the red LED does not illumi nate Input Audio Levels Proper adjustment of input levels is critical to the proper operation of the LR 100 a Receiver Audio Level Adjustment Under normal audio conditions adjust the receive audio level to meet the output level needs of your installation Make sure that the red LED on the VU meter does not illuminate b Auxiliary Input Level Adjustment Under normal audio conditions adjust the receive audio level to meet the output level needs of your installation Make sure that the red LED on the VU meter does not illuminate Selecting SQ ON or OFF See Listen SQ on page 12 If the transmitter that is broadcasting to the LR 100 is SQ capable make sure the SQ switch for the transmitter and the LR 100 is turned ON If not the SQ switch should be turned OFF Channel Selection Select the most appropriate channel by pressing the UP or DOWN button see Channel Selection on page 13 You can also press the SEEK button and the unit will SEEK for the strongest RF signal The unit may stop on a channel that is close to the actual broadcast channel in which case the channel will sound noisy or distorted Simply pre
22. n part number LA 326 Temperature Operation 10 to 40 C 14 to 104 F Environmental Temperature Storage 20 to 50 4 to 122 F Humidity 0 95 relative humidity non condensing Set up Controls Back Panel Physical Rack Mounting Quick Reference LR 100 Front Panel VU METER Set Receive and Auxiliary levels so that the red LED at right does not MUTE when lit the OUTPUT audio is muted MUTE is activated and deactivated by a momentary closure to ground on the rear detach able terminal block see next page H when adjusted properly this LED is lit when transmit audio is not SEEK press to find the next strong signal Also used to lock and unlock channel selec tion press and hold for 5 sec onds A padlock will appear on the display when locked illuminate being received Press and hold again to unlock LR 100 O Output Level 0009 O Power a RF Power Speaker Q Channel Seek gt Headphone POWER switch if operated on battery switch is inoperative ACCESS PANEL Remove to make set up adjustments buttons LR 100 Behind Front Access Panel SQUELCH adjustment adjust so that when your transmit audio is off the Squelch LED is illuminated When squelched audio is muted this keeps you from hearing hiss in your speakers RECEIVE audio
23. nless you are interfacing with an existing narrowband transmission system always use a wide band channel If you are using multiple channels follow this process O 3 Q 5 o e O 9 d a Same Space If you are using transmitters in the same space the most num ber of channels that will work simultaneously is six at 72 MHz and three at 216MHz With all of the transmitters off listen for interference on all the wide band channels via the headphone jack on a Listen receiver Using the frequen cy compatibility tables on pages 13 14 eliminate any channels that have notice able interference Now choose the channels with the widest channel spacing It is recommended that adjacent channels be spaced at least 300KHz If there is no interference the following channels are recommended A C E I J and H for 72MHz and channels 2A 2K and 2V at 216MHz b 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 compatibility tables on pages 13 14 in this case as long as the adjacent channel transmitter is at least 50 fur ther away from the receiver as its transmitter Example The transmitter for the receiver on channel E is 100 feet from the receiver The adjacent channel trans mitter on channel D should be at
24. o The OUT PUT audio is reduced by 40dB to microphone level when this switch is selected to MIC Unbalanced Audio Output There are two unbalanced phono audio OUTPUT connectors The nominal OUTPUT audio level is 10dBu AUXILIARY Input The LR 100 has an AUXILIARY input that allows for greater functionality of the unit for a variety of appli cations The AUXILIARY input consists of a bal anced input combination connector female XLR and 14 in and two unbalanced phono connectors All of these inputs are actively mixed together Thus any combination of input sources can be used Input level is adjusted via the front panel trim pot labeled AUX LEVEL ADJUST Adjust this level to fit the needs of your installation ensuring the last red LED on the VU meter is not illuminated indicating peak audio AUXILIARY Balanced Audio Input The nominal input level for the balanced input is OdBu Female XLR 4 in combination connector pin outs Pin 2 tip Pin 3 ring Pin 1 sleeve Shield AUXILIARY Unbalanced Audio Input The nominal input level for the two unbalanced inputs is 10dBu Female XLR 4 in combination connector pin outs Pin 2 tip Pin 1 and 3 ring sleeve Q gt o 3 D o le 3 Po 7 e en e 2 Cc T o x O o Q o LT 100 Speaker Connection The LR 100 contains a 44 watt 31 watt RMS 4 Ohm power amplifier The Speaker Selection switch determines w
25. p Controls i Front Panel behind Security Cover Receive level auxiliary input level SQ on off squelch Audio output select RX Only RX AUX RX or AUX Speaker Output Aux switchable balanced output level Controls User Controls Volume channel UP DOWN SEEK all controls except volume are lockable Remote Controls Eight position detachable terminal block channel up channel down mute Unit can be programmed so that only desired channels are displayed to Programming the user chaannel selection can be locked by holding the SEEK button 5 seconds Power Green LED illuminates when the unit is powered up Indicators LCD Display Channel RF signal strength lock status programming Squelch Green LED illuminates when the unit is squelched Green LED illuminates when the output audio is muted Power Supply Type In line power supply Listen part number LA 201 Power Supply Input 120VAC 60 Hz 19 watts maximum continuous Power Supply Output 15VAC 1A Power Supply Connector 02 in OD x 01 in ID 5 0mm x 2 5mm ID barrel type Compliance UL Listed Optional Battery 12VDC connected via terminal block Optional Battery Charging Trickle charge of optional 12VDC battery through terminal block Dimensions 8 0 inx 8 0 in x 1 75 in WxDxH 20 3cm x 20 3cm x 4 45cm Unit Weight 2 8 lbs 1 3kg Unit Weight w LA 201 Power Supply 4 2 lbs 1 9kg Shipping Weight 5 6 lbs 2 5kg 1 2 rack unit RU optional rack mount not include order Liste
26. pt any interference received including interference that may cause undesirable operation FCC Statement This equipment has been tested and found to comply with the limits for a class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications H owever there is no guar antee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio T V technician for help This equipment has been certified to comply with the limits for a class B computing device pursuant to FCC and IC Rules In order to maintain compliance with FCC and IC regulations shielded cables must be used with this equip ment Operation with non approved equipment or unshielded cables is likel
27. rer for exact specifications 15 Q O Q X e Q Q ie D 72MHz Compatibility Chart Frequency Phonic MHz Listen Ear Comtek Phonak Wiliams Gentner Telex Drake E e Xt O gt O Q O O N I mn 72 0250 1 1 1 Al 1 1 72 0500 O 1 72 0750 2 2 2 A2 2 3 72 1000 A A A A Taaa 2 A 721 72 1250 3 3 3 AS 14 5 72 1500 6 3 72 1750 4 4 4 A4 15 7 72 2000 K K K K K 8 4 B 72 2 72 2250 5 5 5 K5 16 9 72 2500 a9 5 72 2750 6 6 6 K6 17 11 72 3000 B B B B B 18 12 6 e 72 3 72 3250 7 7 7 87 19 13 72 3500 aa 7 72 3750 8 8 8 B8 20 15 72 4000 N N N N N 16 8 D 724 72 4050 9 9 9 N OLID 72 4500 18 9 72 4750 0 0 0 NO 219 72 5000 e e e e C 23 20 0 E 72 5 72 5250 1 1 1 Ci 24 21 72 5500 Q2 1 72 5750 2 2 2 C2 Q533 72 6000 O e O 24 2 F 726 72 6050 3 3 3 O2 28 25 72 6500 26 3 72 6750 4 4 4 4 27 72 7000 D D D D D 28 4 G 72 7 72 7250 5 5 5 D5 29 72 7500 30 5 72 7750 6 6 6 D 50 31 72 8000 P E El El P 32 6 H 72 8 72 8250 7 7 7 P7 31 33 72 8500 34 7 72 8750 8 8 8 PS 32 35 72 9000 E E E E E 83 36 8 72 9 72 9250 9 9 9 E9 34 37 72 9500
28. s still not functioning nor mally contact Listen Support Coaxial Cable The antenna for the LR 100 can be mounted directly on the unit if desired However you may find that the unit will provide better performance when the antenna is located elsewhere If you plan to mount the antenna in a different loca tion than on the top of the unit you must use cable and connectors rated at 50 Ohms Although cable used for cable TV installations looks similar to this cable it won t work with your Listen system If you need to run cable over a greater length than 50 feet for 216MHz applications or greater than 100 feet for 72MHz applications we recommend that you use RG 8 cable rather than RG 58 It is a lower loss cable meaning that more of your signal will reach the antenna Long cable runs can result in signal degradation due to loss characteristics of the cable At 72MHz there is an average loss of 2dB per 100 feet of cable and at 216MHz an average loss of 5 dB per 100 feet of cable A 3dB loss means half of your power has been lost However it is better to suffer coaxial power loss than to try to shoot your signal through obstacles Obstacles especially metal can create drop outs or reflections of your signal that will result in poor listening conditions Note There are large varieties of 50 Ohm RG58 and RG8 cables You may pur chase a cable that is better or worse than this value Please check with the cable vendor or manufactu
29. ss SEEK again until you find the clearest operating channel To Lock Into Only One Channel press and hold the SEEK button for 5 seconds to lock a receiver into the currently tuned channel Press and hold the button again to unlock NOTE It is highly recommended to lock the channel after installation to prevent accidental channel selec tion Programming In some cases you may choose to give users the ability to select multiple channels For example let s say you are using the LR 100 for language interpretation In this example channels A E and l are three different languages You can use the LR 100 programming fea ture to lock out all but the three channels used in this example By pressing the UP or DOWN button the user can select between the three channels To Lock Out Channels in the LR 100 Simultaneously press and hold the UP and DOWN buttons You will notice the PGM indicator on the LCD indicating you are in the programming mode the unit will go out of the programming mode if you don t press a key for 10 seconds Use the UP and DOWN buttons to select the chan nels you want to lock out As channels are displayed on the unit those chan nels that are locked out from user access will be indicated by the L O symbol on the display When a channel is locked out the LR 100 will skip over that channel when a user is tuning the unit Press the SEEK button while in program mode to lock out a channel lock out means t
30. ting counter clockwise until it squelches mutes This is the minimum squelch setting e Now turn the transmitter on Adjust the squelch setting counter clockwise until the unit squelches This is the maxium squelch theshold Please note that if you are close to the transmitter you may not be able to find the maxium squelch threshold due to the high RF signal of the transmitter f Set the squelch adjustment between the maximum and minimum squelch thresholds keeping the fol lowing in mind Minimum squelch threshold By adjusting the unit near this threshold you will maximize the probabili ty the unit will NOT squelch when the transmitter is on However you also run the risk having the unit NOT squelched and resulting radio noise coming through the system when the transmitter is off You may experience unsquelching of the receiver by interference as well Maximum squelch threshold By adjusting the unit near this threshold you will greatly increase the chance the unit will squelch when the transmitter is off AND you will minimize the probability that the 10 LR 100 Troubleshooting The unit does not power up Ensure the power supply and or battery is connected properly Please note this product no longer utilizes internal fuses The fuses have been replaced with an automatic resetting devie that automatically protects the device in an overload condition See Appendix F Resetting After an Overload Condition for more details
31. udio selection switch a male XLR balanced audio OUTPUT connector and two phono unbalanced audio OUTPUT connectors OUTPUT Audio Selection Switch This switch selects what audio is routed to the OUT PUT audio connectors The switch has three posi tions 1 RX ONLY In this position only RECEIVE audio is routed to the OUTPUT When the transmitter is turned off the unit is squelched and the RECEIVE audio is muted 2 RX AUX In this position both the RECEIVE and AUXILIARY audio are mixed and routed to the OUTPUT 3 RX or AUX In this position the OUTPUT audio is either RECEIVE or AUXILIARY audio When the RECEIVE audio is squelched indicated by the illumination of the SQUELCH LED on the front panel AUXILIARY audio is routed to the OUT PUT When RECEIVE audio is not squelched RECEIVE audio is routed to the OUTPUT Balanced Audio Output When connecting to the XLR balanced OUTPUT use the pin out shown below If the output is unbalanced either use the unbalanced phono connectors or wire the balanced XLR output as shown below with pins 3 and 1 wired together The OUTPUT audio has a nominal output level of OdBu XLR pin out diagram for a balanced connection Pin2 Pin 3 Pin 1 Shield 3 XLR pin out diagram for a unbalanced connection Pin 2 Pin 1 and 3 LINE MIC Switch This switch reduces the OUTPUT level of the bal anced OUTPUT audio only It does not affect the OUTPUT level of the unbalanced audi
32. y to result in interference to radio and TV reception The user is cautioned that changes and modifications made to the equipment without the approval of manu facturer could void the user s authority to operate this equipment Warranty 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 govern
Download Pdf Manuals
Related Search