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- Operating Instructions Manual
Lectrosonics FM-AV4 Operating Instructions Manual
Summary of FM-AV4
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Fm-av4 portable wireless sound system operating instructions and trouble-shooting guide lectrosonics, inc. Rio rancho, nm.
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Introduction thank you for selecting the fm-av4 portable wireless sound system. This system represents over 80 years of combined experience in the design of rf transmitters, receivers and public address systems. The fm-av4 sets new standards for operational convenience, flexibility and mechanical ru...
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General technical description the fm-av4 portable wireless sound system consists of an fm870 combination wireless receiver/amplifier/speaker with a rechargeable battery pack, an m170 belt-pack transmitter and a microphone. Optional microphones, transmitters and accessories are available. These items...
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Controls and functions power/function: a rotary switch which turns the power off and on and selects the operating mode. Operate: set in this position for normal use when the built-in speaker is to be used. Speaker off: set in this position for use with the fm870 plugged into the house sound system. ...
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Controls and functions cont’d wireless mic volume: this control adjusts the volume of the built-in wireless microphone system. This knob does not affect the modulation leds located near it. Aux mic/hi level volume: this control adjusts the volume of the aux mic input and the hi level in inputs. Aux ...
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M170 series transmitters standard fm-av4 systems include an m170 belt-pack transmitter which is designed to be used with a lavalier or headset microphone. The optional m170-xlr transmitter (see page 6) is similar to the m170 but is equipped with two microphone connectors - a locking micro jack for l...
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M170 series transmitters cont’d the battery used in the transmitter should be a 9 volt alkaline battery which will provide up to 15 hours or more of operation. These are available almost anywhere. Carbon zinc batteries, even if marked "heavy duty" or "super heavy duty", will only operate up to 4 hou...
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System setup this section includes some basic steps that will ensure trouble-free operation of your fm-av4 system: 1) make sure the transmitter battery is good, or better yet, new. 2) charge up the battery pack in the fm870 fully before you use the system. 3) extend the antenna fully. Position the f...
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System setup cont’d 4) if you have more than one transmitter on the same frequency, turn on only one transmitter at a time. You cannot use the two transmitters at the same time with a single fm870. You will need to "alternate" back and forth between the transmitters. Failure to do so will result in ...
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Operating tips what are the causes of feedback? Feedback (squealing) occurs when the sound from the speaker re-enters the microphone, comes back out of the speaker again and re-enters the microphone, and so on. At a given distance between the microphone and speaker, the sound can only be turned up s...
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Operating instructions this section covers the initial adjustments to the fm870 and the companion transmitter that must be made before the system is placed into operation: 1) make sure the antenna is extended fully. 2) connect the audio output cable as required. If you are connecting into a "house" ...
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Operating instructions cont’d using hard-wired microphones any low inpedence, unbalanced, dynamic microphone can be plugged into the aux mic input. 1) make sure the volume knobs are set at "0." 2) plug an auxiliary cord (a mm-16 or mc-16c will work) into your microphone and into the aux mic input. 3...
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Microphone choices m140 - this is the microphone supplied with the standard fm-av4 system. It is a cardioid (directional) microphone for lavalier ("lapel") use. Due to the directional pickup pattern, this model will generally provide more gain (loudness) before feedback than the m130 omni-directiona...
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Troubleshooting before going through the following chart, be sure that you have a good battery in the transmitter. It is important that you follow these steps in the sequence listed. Symptom possible cause fm870 power lamp not on or dim 1) power/function switch in off position 2) batteries completel...
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Accessories and replacement parts item description ch-40 battery charger hm142v single headband headset microphone hm152v double headband headset microphone m121s dynamic microphone mc-16c microphone cord mm-16 microphone cord mm-36 audio patch cord rk-51 wind screen rk-119 wind screen rk-142 wind s...
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Specifications overall fm-av4 system operating frequency: 150 to 216 mhz wireless operating range: up to 750 feet fm deviation: + or - 15 khz distortion: less than 1% amplifier audio power output: 6 watts, rms amplifier freq. Response: 50 hz - 20 khz; +0, -3 db speaker: 6" x 9" full range cone audio...
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Service and repair if your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equipment needs repair. Make sure you have followed the setup procedure and operating instructions. Check out the inter-connecting cords and then go through the trouble sho...
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Limited one year warranty the equipment is warranted for one year from date of purchase against defects in materials or workmanship provided it was purchased from an authorized dealer. This warranty does not cover equipment which has been abused or damaged by careless handling or shipping. This warr...