LightSpeed Technologies 820iR User's Manual
Contents
1. Light SPEED JAIR Classroom Amplification System User Manual S LightSPEED SAFETY INSTRUCTIONS h CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated danger ous voltage within the product s enclosure that may be sufficient magnitude to constitute a risk of electric shock The exclamation point within an equilateral triangle is intended to alert the user to the pres ence of important operating and maintenance servicing instructions in the literature accom panying the appliance Read Instructions All the safety and operation instructions should be read before this LightSPEED product is operated Retain Instructions The safety and operating instructions should be kept for future reference Heed Warning All warnings on this LightSPEED product and in these instructions should be followed Follow Instructions All operating and other instructions should be followed Water and Moisture This Light SPEED product should not be used near water Heat This LightSPEED product should be situated away from heat sources such as radiators etc Power Sources This LightSPEED product should be connec2. e 820iR Receiver Amplifier standard wall electrical outlet DA Powe eee e Wires will be routed back to the e LT 71 LightMic Transmitter amplifier so select a location that is free from obstructions that may make SR 70F Infrared Sensor routing wire difficult Example under and cable a whiteboard or bulletin board e Speaker s and speaker wire IR Sensor Placement Sensor location is very important for optimum performance of the 820iR Classroom Amplification System e BEST On the ceiling at or near the middle of the classroom e GOOD High and centered on the long wall e AVOID Locations in corners on walls at heights lower than 7 feet or in places where the line of sight is or could be obstructed GY Heal Cine 1 Fine tuning the Graphic Equalizer 1 Verify that the EQ is set to match the recommended setting for the specific speakers installed in the classroom settings included with the speaker install guide Walk around room near speakers and listen for squealing or feedback Lower the 2K5 and or 4K sliders if a high pitched squealing is present Lower the 400 or 700 sliders if a low pitched ring is present Reduce volume if feedback is still present 3 820iR Users Manual IR SENSOR INSTALLATION Wall Solid Ceiling Mount Suspended Ceiling Mount 1 Lift the ceiling tile nearest the grid rail in your desired sensor location Guide one side of the C clip
3. Safety Instructions Daily Use Instructions 820iR Classroom Amplification System System Components System Installation Unpacking Your System Location of the Receiver Amplifier IR Sensor Placement IR Sensor Installation Suspended Ceiling Mount Wall Solid Ceiling Mount Speaker Installation Front Panel Controls Rear Panel Controls LightMic Controls and Connections Initial Setup Finalizing Receiver Amplifier Final Check System Operation Turning the System On Charging the LightMic System Installation Diagram Input from External Audio Equipment Output to Personal FM Transmitter Operating the Optional HM 70 Handheld Mic Charging the HM 70 Tips on Classroom Amplification Warranty Statement Troubleshooting Guide System Specifications Individual Components and Optional Accessories User Notes User Notes 820iR CLASSROOM AMPLIFICATION SYSTEM 820iR Receiver Amplifier Optional HM 70 Handheld Microphone Congratulations on your purchase of the 820iR Classroom Amplifica tion System This simple yet power ful technology provides crystal clear sound throughout the classroom allowing every child to hear every word every time As the teacher speaks into the LightMic pendant style transmitter his or her voice is transmitted to the 820iR and then amplified through the loudspeaker s The standard system includes the 820iR infrared receiver amplifier LT 71 LightMic transmit ter SR 70 infrared sensor and speaker pac
4. Turn the 820iR switch to the ON LES 820iR Classroom Amplification System position The red LED on the switch y A VOLUME B VOLUME TW will glow gt gt tj IR IR 0 O OZ O O D ELESS MICROPHONE VOLUME 2 Slip the LT 71 LightMic with lanyard around the neck and position the top of the microphone just below the collarbone Note Positioning of the LightMic is critical lt lt for proper volume adjustment channel to A This microphone will be designated as the Teacher Mic gt gt n While speaking in a normal voice gt gt LES 820iR Classroom Amplification System increase the A VOLUME level until z N YOLUME BVOLUME TVNCR CDDV your voice is barely audible FE m m O F POWER e O Remem ber This equipment iS WIRELESS MICROPHONE VOLUME AUDIO INPUT VOLUME designed to supplement and distribute the end user s voice so they are able to speak at a conversational tone Having the volume set too high will result in feedback and listener fatigue lt lt 5 Once initial volume level is set walk around the room and listen for audio dropout and overall audio quality Fine tuning the audio is accomplished by making minor adjustments to the 8 Band Graphic Equalizer on the back panel of the See page 3 for hints on setting the EQ receiver amplifier 6 If a second student pass around microphone eee BD was purchased with system repeat steps TM XL 3 4 but set the oper
5. correctly The light goes out when fully charged Batteries will charge in 8 to 12 hours A fully charged battery will run for up to 8 hours of continuous operation 4 The HM 70 can remain charging for up to 10 days Overcharging will shorten battery life The HM 70 does not use a cradle for charging The charging cable must be plugged directly into the charging jack in the transmitter TIPS ON CLASSROOM AMPLIFICATION Speak in a natural voice A normal conversational speech level will provide an adequate signal It is not necessary to increase the intensity of your voice the amplification system provides adequate amplification approximately 5 10 dB above ambient room noises Avoid wearing jewelry that may rub or bump against the microphone Turn the LightMic off during private conversations with a student parent or other classroom visitor You can also cover the LED lens on top of the LightMic to block the signal Recharge batteries each night When recharged nightly operating time actual usage for the transmitters will last through a typical school day FINGaYGEF Linnie WATE LightSPEED Classroom Amplification Systems are guaranteed against malfunction due to defects in materials and workmanship for a period of FIVE 5 YEARS beginning at the date of the purchase invoice If such malfunction occurs the product will be repaired or replaced at LightSPEED s option without charge during the period and
6. over one edge of the grid rail Providing firm support to the back of the grid rail with one hand to prevent bending firmly and carefully snap the second side of the C clip over the edge of the rail Uncoil sensor wire Connect one end of the sensor cable to the plug on the sensor Loosely secure wire overhead and route it back to the 820iR Connect the other end of the sensor cable into one the sensor input on the back of the 820iR Speaker Installation 1 Locate the speaker installation instructions packed with your speaker s Follow instructions and mount Speaker s Return to this manual to complete the set up of your system wall mounting strip Ny dh N sensor jack Screw the plastic mounting strip to a place high on the wall or in the middle of the solid ceiling Mount the strip horizon tally as shown above Firmly snap the C clip on the back of the IR sensor onto the plastic mounting strip with the sensor plug hanging down if a wall mount or toward the receiver location if ceiling mount Uncoil the sensor wire Screw one end of the sensor cable to the plug on the sensor Route the wire back to the 820iR securing it along the way Connect the other end of the sensor cable to the sensor input on the back of the 820iR Speaker Install Instructions 820iR User Manual 4 POWER Switch POWER Indicator This switch is used to
7. red and stay on 2 The center position of the power switch is MUTE When in this mode the HM 70 is transmitting a signal but no audio can be heard through the system This is useful if you wish to temporarily turn audio off during a private conversation gt OWS OW 3 Grip the barrel of the HM 70 in the center section just below the power switch Avoid gripping the HM 70 around the bottom covering the infrared emitters circling the base This could interrupt signal trans mission from the microphone to the receiver Speak directly into the microphone at a normal level Slowly increase the B VOLUME until you can just hear your voice Slide the switch to the OFF position to turn off the HM 70 Make sure the power indicator light is off 820iR User Manual 14 CHARGING THE HM 70 HANDHELD MIC 1 Ensure the HM 70 handheld microphone is turned OFF ON OFF switch on the side of the unit The 820iR can be left on but must be connected to AC power in order to charge the microphone Connect the loose end of the charging cable into the jack labeled CHARGER on the side of the HM 70 Connect the larger end of the charging cable to one ofthe CHARGERS jacks on the back of the 820iR The HM 70 s rechargeable batteries are factory installed Hellipfu Y mt 15 820iR User Manual The power indicator light next to the power switch glows green when the cable is connected and charg ing
8. D on the front will glow red to indicate charging 1 Ensure the power switch is in the OFF position 2 Ensure speaker wire and all front panel volume controls are turned connections are secure fully counter clockwise NA and not frayed LES 820iR Classroom Amplification System A B CR CD DVD ASSISTIVE LISTENING LightSPEED C2822 A ELESS Ba VOLUME UDIO INPUT Q ALD VOLUME 3 Connect the charging cables to yellow charging jacks labeled CHARGERS The loose end will be connected to the charger input on the microphone AUDIO INPUT TVVCR CD DVD 2 06 2 54 DC SPEAKER OUTPUTS POWER 24V DC ER 4 Connect any auxiliary audio sources to corresponding labeled input gt gt 5 Ensure sensor cable is attached securely 6 Connect DC end of power supply to the black power jack labeled DC POWER 7 Connect the black AC power cable from the power supply to a wall outlet gt gt FINAL CHECK 1 Ensure all cables are appropriately routed out of walking paths and work areas to prevent safety hazards to individuals in the room 2 The amplifier packing material should be kept for warranty shipping purposes Dispose of remaining system packing material in the appropriate refuse containers Leave microphones charging so they are ready for use Microphones will need to be charged on a daily basis 820iR User Manual 8 SYSTEM OPERATION TURNING THE SYSTEM ON 1
9. ating channel to B gt gt ACHB OFF ON If a HM 70 was purchased see page 16 9 820iR User Manual CHARGING THE LIGHTMIC 1 Ensure that the LightMic is turned OFF 2 Connect one end of the charging cable to the LightMic and the other end to one of the charger jacks on the back of the 820iR The LED on the front of the LightMic will glow when fully charged 3 Leave the LightMic plugged in overnight 8 10 hrs to obtain a full charge AUDIO INPUT TV VCR CD DVD Y meil ming Do not attempt to charge alkaline batteries They can overheat and expand creating a significant hazard and damaging the LightMic This is not covered by the warranty 820iR User Manual 10 SYSTEM INTEGRATION DIAGRAM Video In IR Sensor Teacher s Microphone Speaker s Audio Out Video Out E EE Audio Out Video Out LightSPEED amplifier controls the volume of each source individually one volume control for each source 11 820iR User Manual INPUT FROM EXTERNAL AUDIO EQUIPMENT Below are instructions on how to connect an external audio device like a TV VCR CD DVD or computer HU 6 rt LNY 1 Turn the audio input volume controls on the front panel all the way down fully counterclockwise Connect a patch cable not included from the audio source in the corre sponding audio input jacks on the back of the 820IR 3 With both the 820iR and audio source power on adjust the correspo
10. e canceling headset microphone used MC TK250LTM A ST Wall charger 6 dual RCA audio cable 3 5 mm mono to 3 5 mm mono audio cable CA MMC2535 Audio patch cable 2 5 mm mono to 3 5 mm mono 19 820iR User Manual USER NOTES Record your system serial numbers and purchase information This is helpful when ordering additional components accessories and or warranty service Components Serial Number 820iR Microphones Sensors Speakers Purchase Information Your School Organization District e BS 820iR User Manual 20 USER NOTES 21 820iR User Manual LightSPEED Technologies Inc 11509 SW Herman Rd Tualatin OR 97062 800 732 8999 www lightspeed tek com S LightSPEED
11. g controls adjust the levels of the various audio frequencies This allows the installer to properly equalize the system to produce optimum sound quality CHARGERS These jacks charge the LightMic s and optional handheld microphone with the supplied charg ing cable s SENSOR INPUT The IR sensor cable connects to the sensor input Connect additional sensors to the 820iR to cover large or odd shaped classrooms SENSOR SHORT This LED glows when there is a short in one of the sensor cables 820iR User Manual 6 LIGHTMIC CONTROLS AND CONNECTIONS JUUUUU Ss LightSPEED ON OFF MUTE Switch This switch located on the side of the LightMic turns the unit on or off mute Channel Select Switch CH A B This switch allows for selection between Channel A or B If you are using a single microphone transmit ter for your system we recommend using Channel A Power Charge LED Indicator The light glows blue when the LightMic is powered ON red when plugged into the charging cable External Microphone Input MIC Use the 3 5 mm MIC jack for the optional TK 250 headset microphone part MC TK250LTM 7 820iR User Manual JUUUUU 5 Auxiliary AUX Plug a laptop MP3 player or other audio source into this jack to wirelessly transmit the audio signal to be played through the 820iR Charger Input CHARGER Plug the charging cable from the 820iR into this jack for daily charging The LE
12. kage 1 820iR User Manual SR 70F iR Sensor LT 71 LightMic Transmitter The 820iR is a two channel receiver amplifier that allows the use of up to two microphones simultaneously and up to two additional audio input sources such as TV VCR DVD CD MP3 etc In addition LightSPEED offers various speaker options that are included with your system to pro vide optimal sound in rooms of all shapes and sizes The LT 71 LightMic is a wireless pen dant style transmitter This two chan nel rechargeable unit is clipped to a lavaliere cord and worn around the neck for teacher use or it can be used like a standard handheld microphone for the students to pass around when speaking SYSTEM COMPONENTS SIE LightSPEED O ORM o 0 820iR Infrared Receiver Amplifier Sensor Cable JUUUUL SR 70F Infrared Sensor Power Supply LT 71 LightMic Transmitter Speakers and _ Spea ker Wire Optional HM 70 Handheld Microphone Ilx ho Keep ALL packaging materials If the system Q Helpful aeoe LT must be returned it will be quick convenient zy Hinu and undamaged 820iR User Manual 2 SYSTEM INSTALLATION Unpacking Your System Location of the Receiver Amplifier e Ensure that you have received Place the 820iR on a flat surface like a all of the components of bookcase countertop or optional Light your system SPEED wall shelf part AC 800WB e Select a location that is close to a
13. l attain a full charge Full charge will last eight hours Make sure the charge cord is connected to the cradle charger Inspect the battery contacts Clean and adjust if necessary Hearing Static e Ensure sensor is in optimum location refer to sensor placement in manual A single sensor will cover a 1600 sq ft enclosed classroom Ensure that no other LT 71 HM70 is operating on the same channel If an external microphone is in use try another LightMic that is known to be working if available to isolate the problem If static persists with known good microphone the LT 71 input jack has damage and will need service Low Volume or Feedback e Ensure microphone is positioned appropriately just below the collar bone If a headset microphone is in use the end of the mic boom should be positioned at the corner of the mouth Check volume level on the ampli fier If the volume is too high feed back WILL occur Adjust accordingly No Sound From Speaker Turn the 820iR on Confirm that the POWER light located on the front panel switch is on Confirm signal is being received at the amplifier The IR signal light will be lit red indicating a Signal is being received Confirm microphone is function ing Next to the IR signal light is the AF signal light This light will flicker green as audio is picked up by the microphone indicating activity Confirm that the speaker wires are connected correct
14. ly to the back of the 820iR refer to speaker install guide If you review these instructions and still have questions write down the serial number and model number of your system and call LightSPEED Technical Services at 800 732 8999 6 30 a m 5 p m PST 17 820iR User Manual SYSTEM SPECIFICATIONS Power Output 12 W per channel 24 W total Amplifier Frequency Response 40 Hz to 20 kHz 3 dB Carrier Frequencies IR Signal to Noise Ratio Dynamic Range Maximum DEVIATION ai AEG CAREER 50 dB Receiver Type Receiver Sensitivity Image and Spurious Rejection Dimensions W x D x H Audio Distortion Built in Microphone Uni directional Electret Battery Power 1 year warranty 2 AA NiMH Rechargeable Mic Level 3 5 mm Line Level 3 5 mm Up to 1600 square feet per sensor 50 ft Plenum rated Mounting Ceiling clip Wall bracket Dimensions W x D x H 4 25 Diam x 2 0 H 820iR User Manual 18 INDIVIDUAL COMPONENTS amp OPTIONAL ACCESSORIES Part Number Description RX 820 Infrared receiver amplifier mixer w built in charger LightMic rechargeable microphone transmitter w lavaliere cord batteries and charging cable Rechargeable AA battery Nickel Metal Hydride Charging cable for LT 71 and HM 70 microphones Infrared sensor with cable and wall or ceiling mounting bracket AC 71CC Cradle charger Contact LightSPEED at 800 732 8999 for loudspeaker information Optional Accessories Nois
15. nding volume control on the front panel until the desired level is achieved NOTE Be careful to not overdrive the volume to the loudspeaker s as this can cause potential damage 820iR User Manual 12 OUTPUT TO PERSONAL FM TRANSMITTER 1 Turn the ALD Assistive Listening Device volume control on the front panel all the way down fully counterclockwise 5 ODS OWI WD 2 Determine the size and type of audio input jack on the device as many manufacturers products differ in connector size and shape The LightSPEED LES 370 Personal FM System requires a 3 5 mm to 3 5 mm patch cable part CA MMC3535 not included 3 Connect a patch cable from the ALD s zem microphone jack or AUX input to the 3 5 mm ASSISTIVE LISTENING jack on the front of the 820iR 4 Adjust the volume control on the ALD s receiver to maximum output NOTE This is to set the maximum allowable signal from the 820iR 5 With the 820iR and ALD turned on speak into the LightMic and slowly adjust the corresponding ALD VOLUME control until the appropriate audio level is attained in the ALD s receiver headphones 13 820iR User Manual OPERATING THE OPTIONAL HM 70 HANDHELD MIC LightSPEED MUTE Center Position The Channel A B switch is located inside the battery compartment The switch is set to Channel B at the factory 1 Slide the power switch on the side of the HM 70 all the way up The power indicator LED will glow
16. ted to a power supply only ofthe type described in these operation instructions or as marked on this LightSPEED product Power Cord Protection Power supply cords should be routed so that they are not likely to be walked upon or pinched by items placed upon or against them Object and Liquid Entry Care should be taken so that objects do not fall onto and liquids are not spilled into the inside of this LightSPEED product Damage Requiring Service This LightSPEED product should be serviced only by qualified service personnel The user should not attempt to service this LightSPEED product Prevent Electric Shock do not use this polarized plug with an extension cord receptacle or other outlet unless the blades can be fully inserted to prevent blade exposure 820iR User Manual i LES 820iR Classroom Amplification System A VOLUME B VOLUME TV VCR CD DVD ASSISTIVE LISTENING G O 0 O 9 e AUDIO INPUT VOLUME ALD VOLUME POSITION THE LIGHTMIC Unplug the LightMic from the charging cable and place it around your neck Adjust the neck strap so the top of the microphone rests just below your collarbone AUDIO INPUT TVVCR CD DVD TURN ON THE LIGHTMIC CHARGE BATTERIES Turn the microphone ON using the Plug the LightMic back into the ON OFF switch on the side of charging cable to recharge at the the LightMic and speak normally end of the day ii 820iR User Manual
17. turn the 820iR ON switch up or OFF switch down When the POWER switch is in the ON position the red POWER light will glow IR Indicators IR These lights will glow red when the corresponding microphone is turned on This light confirms the 820IR is receiving the infrared signal AF Indicators AF These lights flash green when audio voice from the microphone is detected 5 820iR User Manual FRONT PANEL CONTROLS 4 A VOLUME Controls the volume level of the teacher microphone that is switched to Channel A Rotating the knob clockwise increases output level 5 B VOLUME Controls the volume level of the optional second microphone that is switched to Channel B Rotating the knob clockwise increases output level 6 AUDIO INPUT VOLUME e TV VCR Controls the volume of a TV VCR connected to the TV VCR INPUT e CD DVD Controls the volume of a CD DVD player connected to the CD DVD INPUT 7 ASSISTIVE LISTENING VOLUME Controls the volume level of an assistive listening device REAR PANEL CONTROLS SPEAKER OUTPUTS 1 4 These 4 AUDIO INPUTS binding post connectors are used to connect the 820iR to the loudspeakers Depending on speaker all outputs may not be used e CD DVD Accepts stereo signal from CD DVD player via RCA cable e TV VCR Accepts stereo signal from TV VCR via RCA cable DC POWER Plug the 24 V power Supply into this jack 8 BAND GRAPHIC EQUALIZER The Slidin
18. under the limitations stipulated in the data sheet or the user s manual 1 Limited exclusions specifically apply to all microphone elements rechargeable batteries battery chargers and their assemblies as well as external cables and wires Warranty on microphones microphone elements is limited to original manufacturer s warranty usually ONE 1 YEAR 3 Warranty on LightSPEED NiMH AA rechargeable batteries is ONE 1 YEAR 3 Warranty on LightMic s internal microphone is FIVE 5 YEARS Prepaid shipping label provided by LightSPEED factory or an authorized warranty service center Warranty does not extend to finish appearance items or malfunctions due to abuse or operation other than specified conditions nor does it extend to incidental or consequential damages Repair by other than LightSPEED or its authorized service agencies will void this guarantee Information on authorized service agencies is available from LightSPEED Technologies Inc Our Service Department 800 732 8999 6 30 a m 5 p m PST will handle all your repair replacement needs 820iR Users Manual 16 TROUBLESHOOTING GUIDE Note Most problems are directly related to low battery power Please run through the Battery Check items first For remaining trouble shooting use known good fully charged batteries Battery Check e Confirm batteries are charged each night Make sure the LT 71 is turned off while charging so that it wil
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