Related Manuals for Lectrosonics FM-AV4
Summary of Contents for Lectrosonics FM-AV4
-
Page 1: Introduction
FM-AV4 PORTABLE WIRELESS SOUND SYSTEM OPERATING INSTRUCTIONS and trouble-shooting guide LECTROSONICS, INC. Rio Rancho, NM... -
Page 2: Table Of Contents
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 ruggedness. The built- in wireless receiver, the rechargeable power supply and the high quality of the audio output set this system apart from any other portable PA system on the market. -
Page 3: General Technical Description
"line in" and "line out" jacks for external tape recorders. This allows the FM-AV4 to interface with other sound systems, video taping equipment or any type of "house" sound system. This versatility lets you use the wireless microphone, a hard-wired microphone, a tape recorder and the house sound system all at the same time. -
Page 4: Controls And Functions
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. The wireless microphone will operate, but the sound from the built-in speaker will be muted. - Page 5 AUX MIC INPUT: This jack is a standard 1/4" phone jack and will accept a high impedance dynamic microphone. It is recommended that you use the LECTROSONICS RM-121S microphone with an MC-16C or MM-16 cord. HI LEVEL OUT: An RCA phono jack that provides a one Volt output signal to drive line level inputs of tape decks, cassette players and other P.A.
-
Page 6: M170 Series Transmitters
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 lavalier or headset microphones and an XLR connector for use with standard low impedance hand held microphones. - Page 7 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"...
-
Page 8: System Setup
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. - Page 9 See page 9 for more details on feedback. 8) The standard FM-AV4 system includes an M140 cardioid lavalier microphone. This directional microphone will minimize background noise and provide resistance to feedback when properly positioned on the user’s body.
-
Page 10: Operating Tips
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 so loud before feedback occurs. -
Page 11: Operating Instructions
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" sound system or external audio or recording equipment, make those connections before turning on the power. - Page 12 Set the AUX MIC/HI LEVEL at about "6" then adjust the volume control on your tape player to get the desired volume. Not all tape recorders will work with the FM-AV4. Low cost tape recorders may not have "line level" inputs and outputs required for quality recording and playback.
-
Page 13: Microphone Choices
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-directional model. The M140 has a "brighter"... -
Page 14: Troubleshooting
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 completely discharged 3) Battery connections loose... -
Page 15: Accessories And Replacement Parts
ACCESSORIES AND REPLACEMENT PARTS ITEM DESCRIPTION CH-40 Battery Charger Replacement HM142V Single headband With locking micro plug for M170 Headset Microphone series transmitters. HM152V Double headband With locking micro plug for M170 Headset Microphone series transmitters. M121S Dynamic Microphone For hand-held use plugged into the AUX MIC INPUT jack of the FM870 (cord not supplied). -
Page 16: Specifications
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"... -
Page 17: Service And Repair
There are no adjustments inside that will make a malfunctioning unit start working. LECTROSONICS service department is equipped and staffed to quickly repair your equipment. In-warranty repairs are made at no charge in accordance with the terms of the warranty. Out of warranty repairs are charged at a modest flat rate plus parts and shipping. -
Page 18: Warranty
This warranty gives you specific legal rights. You may have additional legal rights which vary from state to state. LECTROSONICS, INC. 581 LASER ROAD RIO RANCHO, NM 87124 USA August 17, 1996...
Need help?
Do you have a question about the FM-AV4 and is the answer not in the manual?
Questions and answers