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50 Watt Mixer Amplifier
AT-GAIN-M50-LZ
The Atlona AT-GAIN-M50-LZ is a two-input mixer amplifier designed for low impedance
education and commercial applications. The amplifier delivers either two channels of 25
watts each into 4 or 8 ohms, or a single channel of 50 watts. The GAIN-M50-LZ features two
unbalanced stereo audio inputs on RCA and 3.5 mm connections with independent level control
for each. An unbalanced 3.5 mm output allows the mixed signal to be passed to an assistive
listening system or separate amplifier.
The GAIN-M50-LZ includes unique capabilities intended for education applications. Ducking
automatically lowers the program audio level on input 1 when a teacher speaks into a
microphone system connected to the unbalanced input 2. PA sense mutes the output of the
amplifier whenever it detects activity on the school public address system. Both features ensure
important lesson material and announcements are heard clearly.
The compact, plenum rated enclosure allows the amplifier to be mounted in a variety of locations
such as under a desk or table, on the wall behind a display, or in the ceiling.
The amplifier includes an RS-232 port for automated operation from Velocity™ or third-party
control systems. It also supports remote volume control from the optional AT-GAIN-VOL
wallplate.
Package Contents
1 x AT-GAIN-M50-LZ
2 x 2-pin captive screw connectors
2 x 3-pin captive screw connectors
1 x 4-pin captive screw connector
4 x Machine screws
IMPORTANT: Visit https://www.atlona.com/product/at-gain-m50-lz for
the latest firmware updates and User Manual.
4 x Rubber feet
1 x 24 V / 3 A power supply
1 x AC power cord
1 x Insert w/ QR code
1
Installation Guide
AT-GAIN-M50-LZ
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Table of Contents
Related Manuals for Panduit ATLONA AT-GAIN-M50-LZ
Summary of Contents for Panduit ATLONA AT-GAIN-M50-LZ
- Page 1 50 Watt Mixer Amplifier AT-GAIN-M50-LZ The Atlona AT-GAIN-M50-LZ is a two-input mixer amplifier designed for low impedance education and commercial applications. The amplifier delivers either two channels of 25 watts each into 4 or 8 ohms, or a single channel of 50 watts. The GAIN-M50-LZ features two unbalanced stereo audio inputs on RCA and 3.5 mm connections with independent level control...
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Page 2: Front Panel Descriptions
Installation Guide AT-GAIN-M50-LZ Front Panel Descriptions AT-GAIN-M50-LZ IN 1 IN 2 GAIN PORT LEVEL MUTE DUCKING TRIGGER LOOP CLASS 2 WIRING MODE LEVEL 25V-100V Connect a USB-C cable to this port to Press these buttons to increase (+) or perform firmware updates. Refer to decrease (-) the audio output volume. - Page 3 Installation Guide AT-GAIN-M50-LZ AT-GAIN-M50-LZ Rear Panel Descriptions IN 1 IN 2 GAIN PORT LEVEL MUTE DUCKING TRIGGER LOOP CLASS 2 WIRING MODE 25V-100V SPEAKER RX TX INPUT CTRL / RS-232 OUTPUT PA SENSE DC 24V INPUT MODE Connect stereo RCA cables to INPUT 1 Set this toggle switch to either STEREO and/or connect a 3.5 mm stereo cable to or MONO, based on the speaker...
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Page 4: Installation
Installation Guide AT-GAIN-M50-LZ Installation Connect stereo RCA cables to INPUT 1 and/or connect a 3.5 mm stereo cable to INPUT 2. Connect the included 4-pin captive screw connector from the OUTPUT port to a pair of program / stereo speakers. This port supports 2 x 25 watts @ 4/8 ohms (stereo or dual mono) or 1 x 50 watts @ 4/8 ohms (bridged). -
Page 5: Front Panel Led Indicators
Installation Guide AT-GAIN-M50-LZ Front Panel LED Indicators The LED indicators on both the front and rear of the unit provide basic information on the current status of the unit. Description Solid green Unit is powered. Unit is not powered. IN 1, IN 2, OUT Description Solid green Identifies the currently selected port. -
Page 6: Amplifier Modes
Installation Guide AT-GAIN-M50-LZ Amplifier Modes Stereo Mode In stereo mode, the output delivers 25 watts per left and right channel. Stereo sources will pass AT-GAIN-M50-LZ AT-GAIN-M50-LZ through to the amplifier, unchanged. IN 1 IN 1 IN 2 IN 2 Locate the included 4-pin captive screw connector, for the OUTPUT port. PORT PORT LEVEL... - Page 7 Installation Guide AT-GAIN-M50-LZ PA Sense This section covers PA sense, which mutes the current audio program for the duration of a PA broadcast. The default setting of this port is Normally Open (NO). This can be changed to Normally Closed (NC) using the API. Connect the PA SENSE port to the PA system and/or connect the TRIGGER port to the paging sensor.
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Page 8: Volume Control
Installation Guide AT-GAIN-M50-LZ Control The CTRL / RS-232 port provides both volume control and external control. The top port is used to connect to the AT-GAIN-VOL (not included), and the bottom port is used to connect to a control system. Both ports can be used simultaneously. Volume Control AT-GAIN-M50-LZ AT-GAIN-M50-LZ... - Page 9 Installation Guide AT-GAIN-M50-LZ Ducking Overview Audio ducking is a technique where the volume of one sound (usually background music) is automatically reduced when another sound (often a voice or main audio) is present. Ducking tem- porarily “ducks”, or lowers, the volume level of one audio signal anytime a second audio signal is present.
- Page 10 Installation Guide AT-GAIN-M50-LZ Program Decrease The maximum volume reduction in decibels (dB) that occurs when ducking is triggered. This region lies between the attack and release phases. Program Decrease Trigger The audio trigger level, in decibels (dB). When this trigger level is exceeded, audio ducking is activated, reducing the background audio channel volume.
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Page 11: Performing A Factory Reset
Installation Guide AT-GAIN-M50-LZ Performing a Factory Reset Simultaneously press and hold both the PORT (1) and DUCKING (2) buttons for 10 seconds. AT-GAIN-M50-LZ IN 1 IN 2 GAIN PORT LEVEL MUTE DUCKING The LED indicators on the unit will flash to indicate the factory reset has occurred. TRIGGER LOOP CLASS 2 WIRING... -
Page 12: Updating The Firmware
Installation Guide AT-GAIN-M50-LZ Updating the Firmware Requirements: • AT-GAIN-M50-LZ • Firmware file • Computer running Windows • USB-C cable • USB Firmware Update Tool Download the firmware file from atlona.com and extract the contents of the .zip file to a folder on the computer desktop. - Page 13 Installation Guide AT-GAIN-M50-LZ Click the Browse button and select the firmware file. Once the firmware file is selected, it will appear in the Firmware File field. If the firmware file is not displayed in this field, click the Refresh button. Click the Update Firmware button.
- Page 14 Installation Guide AT-GAIN-M50-LZ 11. After the update process has completed, the Copy process completed message will be displayed in the message window. The PWR LED indicator, on the front panel, will flash green while the unit is being updated. Do not disconnect the USB cable during the update process. When the PWR LED stops flashing and is solid green, the update process will be complete.
- Page 15 Installation Guide AT-GAIN-M50-LZ Notes...
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Page 16: Warranty
Installation Guide AT-GAIN-M50-LZ Warranty To view the product warranty, use the following link or QR code: https://atlona.com/warranty/. English Declaration of Conformity The English version can be found under the resources tab at: https://atlona.com/product/at-gain-m50-lz/. Chinese Declaration of Conformity 中国RoHS合格声明 由SKU列出於: https://atlona.com/about-us/china-rohs/. International atlona.com 41.43.508.4321...
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