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Summary of Contents for Quest Engineering M120bt
- Page 1 Owner’s Manual M120bt...
- Page 2 WARNING TO PREVENT THE RISK OF SHOCK OR FIRE. DO NOT USE THIS CORD WITH AN EXTENSION, RECEPTACLE OR ANY OTHER OUTLET UNLESS THE BLADES CAN BE FULLY CUT. PLEASE MATCH THE WIDE BLADE WITH THE WIDE SOCKET OPENING. TO PREVENT THE RISK OF SHOCK OR FIRE. DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
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Page 3: Table Of Contents
M120bt Table of Contents Introduction .................................... 2 Features ....................................3 Controls ....................................4 Installation ....................................6 Wiring Guide ................................... 9 Operations .................................... 12 Music on Hold (MoH) ................................13 Media Module ..................................15 Block Diagram ..................................17 Specifications ..................................18 21000 Transcanadienne Baie d’Urfé, Québec, H9X 4B7... -
Page 4: Introduction
These models have a constant voltage power amplifier allowing use at 25/70V or at low impedance of 4 or 8 Ohms. The M120bt can deliver a power of 120 Watts. It offers three input... -
Page 5: Features
M120bt Features The M120bt mixer amplifiers are complete all-in-one mixer amplifier solutions for commercial and industrial applications. These low-cost units offer all the necessary features in a simple format. • Three (3) microphone inputs and two (2) line inputs ( , RCA and 3.5mm on the front panel). -
Page 6: Controls
5. POWER switch - This switch turns the device on/off. The POWER indicator lights up when the power is on. 6. Bluetooth/FM Receiver and MP3 Player – This module includes Bluetooth, an FM receiver with memories and an MP3 player on SD/SDHC card and USB port. The M120bt are delivered with an infrared remote control. - Page 7 M120bt M-Series – Back Panel Presentation [Figure 1.2 Rear panel diagram] 1. Power Cable. 2. Speaker output connector – This 5-contact terminal block connector allows the use of 25V or 70V constant voltage loudspeakers, as well as low impedance loudspeakers of 4 or 8 ohms.
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Page 8: Installation
Location: Take the unit out of its packaging (keep it for any return to the workshop). The M120bt mixing amplifier can be installed in a standard 19” equipment rack or on a shelf. To install the unit in a standard 19” equipment rack, the optional RK- M3565 Rack Bracket Kit must be ordered at time of purchase. - Page 9 A simple way to represent a constant voltage is to divide the power in Watts of the amplifier by the number of loudspeakers used. For example, to connect ten loudspeakers to the output of an M120bt amplifier, use a loudspeaker whose transformer provides a tap point of approximately 10 Watts.
- Page 10 M120bt Installation Connecting sound sources Then connect the sound source to the terminal block input connectors on the back. If your console has balanced outputs, use balanced three-conductor connections and connectors (you can use unbalanced connections, but you'll get better sound quality and less noise if you use balanced connections).
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Page 11: Wiring Guide
M120bt Wiring Guide Wiring plans Choose the input connector and the appropriate cable for each source. We recommend the use of pre-assembled or professionally assembled 22-to-24-gauge balanced cables. Figure 2.1 shows the connection diagrams for the different connectors. RCA input connectors can also be used as unbalanced inputs. - Page 12 M120bt Wiring Guide Wiring plans – Continued Choose the output connector and the appropriate cable for each source. For the amplifier output connectors, we recommend the use of pre-assembled or professionally assembled speaker cables of high quality and of sufficient gauge. You can use pluggable terminal blocks for your output connectors.
- Page 13 M120bt Wiring Guide Speaker connections are shown in Figure 2.2 [Figure 2.2 How to connect speakers] WARNING: Never use the low impedance (4Ω / 8Ω) and high impedance (25V, 70V) outputs simultaneously. [Figure 2.3 Wrong connection]...
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Page 14: Operations
M120bt Operations Power On Press the power switch on the front to turn on the device. The Power indicator lights up, as well as the Protection indicator. The Protection indicator turns off after approximately five seconds (a click is then heard). -
Page 15: Music On Hold (Moh)
M120bt Operations Input Signals Gain Control. The Quest Commercial Mixer Amplifier can accept wide range and variable input signals thanks to the gain adjustment potentiometers. Adjust the gain potentiometer within a range of 44dB to accommodate different external equipment. Figure 3.2 shows the detail of input sensitivity. - Page 16 M120bt Operations Using the Music on Hold (MoH) output to power a 2nd zone For use for 2 or more zones, the example below illustrates the installation that can be done when the unit is used in conjunction with a 2nd unit. The MOH connector of the first is used to power the second and so on.
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Page 17: Media Module
M120bt Media Module with Bluetoothoo 1- Display screen 2- USB Connector Insert a USB flash drive to play MP3 files automatically. 3- SD card slot Insert SD/SDHC card to play MP3 files automatically. 4- MODE key Short press to select the source: FM, USB, SD card, or Bluetooth. Press and hold to turn the Media module power on and off. - Page 18 M120bt Media Module with Bluetooth Using the Tuner 1. Press MODE key until the display shows Radio 2. Press PLAY / PAUSE key to select radio 3. Press and hold NEXT or PREVIOUS key to automatically seek the previous or next available FM station 4.
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Page 19: Block Diagram
M120bt Block Diagram... -
Page 20: Specifications
M120bt Specifications Performance M120bt Input Sensitivity for full output at maximum gain Balanced Microphone inputs -50dB ± 3dB Unbalanced & AUX inputs -30dB ± 3dB Telephone Paging -21dB ± 3dB Frequency Response at 1watt from speaker out tap, 80Hz ~18kHz +1.5/-3dB... - Page 21 M120bt Notes...