FM-AV4 PORTABLE WIRELESS SOUND SYSTEM OPERATING INSTRUCTIONS and trouble-shooting guide LECTROSONICS, INC. Rio Rancho, NM
OPERATING INSTRUCTIONS This section covers the initial adjustments to the FM875 and the companion transmitter that must be made before the system is
–IOPERATING INSTRUCTIONS cont’d USING HARD-WIRED MICROPHONES Any unbalanced, dynamic microphone can be plugged into the AUX MIC INPUT. 1) Make sur
MICROPHONE CHOICES M140 - This is the microphone supplied with the standard FM-AV4 system. It is a cardioid (directional) microphone for lavalier (&
TROUBLESHOOTING Before going through the following chart, be sure that you have a good battery in the transmitter. It is important that you f
ACCESSORIES AND REPLACEMENT PARTS ITEM DESCRIPTION CH-40 Battery Charger HM142V Single headband Headset Microphone HM152V Double headband Headset
SPECIFICATIONS OVERALL FM-AV4 SYSTEM Operating frequency: 169 to 186 MHz Wireless operating range: Up to 750 feet FM deviation: ±15 KHz Distortion
SERVICE AND REPAIR If your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equipment needs repai
LIMITED ONE YEAR WARRANTY The equipment is warranted for one year from date of purchase against defects in materials or workmanship provided it was pu
INTRODUCTION Thank you for selecting the FM-AV4 Portable Wireless Sound System. This system represents over 80 years of combined experience in the d
GENERAL TECHNICAL DESCRIPTION The FM-AV4 Portable Wireless Sound System consists of an FM875 combination wireless receiver/amplifier/speak
– –CONTROLS AND FUNCTIONS 100 2 4 6 8 MODULATION RF –20 LIMIT WIRELESS MIC VOLUME OUT IN POWER CHARGE MIC LEVEL OUTPUT LECTROSONICS LO-Z BAL IN/OUT O
MIC LEVEL OUTPUT: LINE OUT: A 3-pin XLR audio connector which provides a balanced, low impedance (200 Ohm), 10 millivolt, microphone le
––TRANSMITTERS Standard FM-AV4 systems include an M175 belt-pack transmitter which is designed to be used with a lavalier or headset mic
TRANSMITTERS cont’d The battery you use in the M175 Series transmitter should be a 9 Volt alkaline, available almost everywhere. An
SYSTEM SETUP This section includes some basic steps that will ensure trouble-free operation of your FM-AV4 system: 1) Make sure the transmitter bat
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
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