Summary of Contents for AVProAlliance AViMUX4
- Page 1 PROFESSIONAL MICROPHONE MULTIPLEXER Operation and Application Manual iMUX4 ICROPHONE ULTIPLEXER MIC 1 MIC 2 MIC 3 MIC 4 MICROPHONE SELECTION AVProAlliance.com PO Box 90703, Sioux Falls, SD 57109...
- Page 2 PROFESSIONAL MICROPHONE MULTIPLEXER Operation and Application Manual iMUX4 ICROPHONE ULTIPLEXER MIC 1 MIC 2 MIC 3 MIC 4 MICROPHONE SELECTION AVProAlliance.com PO Box 90703, Sioux Falls, SD 57109...
-
Page 3: Table Of Contents
TABLE OF CONTENTS SAFETY PRECAUTIONS ......................3 DESCRIPTION Introduction ..........................4 Features ..........................4 Specifications ........................5 Controls ..........................6 Supplied Accessories ......................7 Kit Accessories ........................8 OPERATION Introduction ..........................9 Power On/Off Switching......................9 Battery Installation/Replacement ..................9 Microphone Selection Switching… ...................10 Microphone Input Calibration Controls ................11 iAI2 Microphone Calibration .....................11 APPLICATIONS Introduction ........................12 Measurement Setup ......................12... -
Page 5: Safety Precautions
WARNING Please observe these Safety Precautions There is always a danger present when using electronic test equipment. Unexpected voltages can be present at unusual locations in defective equipment and distribution systems. Become familiar with the equipment with which you are working, and observe the following safety precautions. -
Page 6: Description
DESCRIPTION Introduction The iMUX4 Microphone Multiplexer is the perfect instrument to expedite the testing, adjustment, and documentation of the acoustically averaged frequency response of cinema theaters, home theaters, churches, halls, banquet rooms, meeting rooms, clubs, or any other venue in which great sound in the least amount of time is a requirement. The iMUX4 features common XLR input and output microphone connections. -
Page 7: Specifications
Specifications Frequency Response: 20Hz-20kHz +/- 2 dB Dynamic Range: 30 dB to + 120 dB (SPL) input Inputs Microphone Inputs: Four Type: Balanced Connector: XLR Female Input Impedance: 40 kohms nominal 20Hz – 20kHz +/-2 dB Freqeuncy Response: Dynamic Range: 25dB to = 120dB SPL Maximum Input Level: 135 dB SPL... -
Page 8: Controls
Controls Multiplex CAL 2 CAL 1 CAL 4 CAL 3 Rate MIC 4 IN MIC 3 IN MIC 2 IN MIC 1 IN OUTPUT iMUX4 MICROPHONE MULTIPLEXER MIC 1 MIC 2 MIC 3 MIC 4 MICROPHONE SELECTION Figure 1. iMUX4 Controls 1. -
Page 9: Supplied Accessories
6. LED(s) TEST CONDITION INDICATORS: A LED indicates the RTA is connected and turned on to activate the iMUX4. Constant LED illumination indicates that microphone input is selected and a microphone is connected and powered. Flashing LEDs indicate low batteries which can produce erroneous measurements. 7. -
Page 10: Kit Accessories
Kit Accessories (Kit Only) Figure 3. Studio Six Digital iAudioInterface2 (iAI2) (available from AVProAlliance.com) Figure 4. Reed SC-05 microphone calibrator (available from AVProAlliance.com) Figure 5. Microphone with 9/32” grommet sound seal used to seal microphone inlet while using Reed SC-05 calibrator Figure 6. -
Page 11: Operation
70 dB SPL for best results. Care should be taken to periodically calibrate your iMUX4 with your RTA. This includes alignment of microphone #1 with the RTA and then each remaining microphone with the first. AVProAlliance.com recommends the Reed SC-05 for this function. Power – On/Off Switching Battery Installation/Replacement The iMUX4 contains no on/off switch. -
Page 12: Microphone Selection Switching
Microphone Selection Switching The iMUX4 has four separate microphone inputs. These inputs are switched to the RTA or iAI2 ANALOG INPUT jack by the five-position MICROPHONE SELECTION switch on the iMUX4. The first four positions are labeled 1, 2, 3, and 4. These positions switch only the respective single microphone input to the RTA. -
Page 13: Microphone Input Calibration Controls
Microphone Input Calibration Controls The calibration control for each microphone input is located beside each of the MIC IN jacks. The CAL controls are multi-turn pots, adjustable with a miniature screw driver (not provided). yellow. Select the blue arrow on the right for the calibration menu. -
Page 14: Applications
APPLICATION Introduction The AVProAlliance.com iMUX4 allows an analyzer to average sound from multiple microphones in a room, providing a single RTA or FFT test display. When sound is time averaged from multiple microphones, measuring different positions in the room, the resulting test display is called “spatially averaged.”... -
Page 15: Microphone Room Placement
listeners' ear height. Point the microphones Microphone Room Placement straight up for the best omni-directional pickup. Use a staggered parallelogram or The microphones should be randomly diagonal microphone placement formation placed in the room in the listening area. with Mic 1 located at the central listening Avoid placing the microphones too close to location or sweet spot at ear height. -
Page 16: Service And Warranty Information
Save the original shipping carton and packing material for reuse should you ever need to ship your iMUX4, or return it to AVProAlliance.com for repair. If you are returning the unit to AVProAlliance.com for service open a Support ticket on the site and enclose the following information: owner's address, billing information, purchase order (if applicable), name and phone number of contact person, description of problem and reason for return. - Page 17 PO Box 90703 Sioux Falls, SD 57109 www.AVProAlliance.com Printed in U.S.A.
Need help?
Do you have a question about the AViMUX4 and is the answer not in the manual?
Questions and answers