The Grommes~Precision BX15 is a compact 15-watt, 3-channel mixer amplifier designed for commercial sound, paging, background music, and small sound reinforcement systems. It combines audio mixing and amplification in a single rugged unit, making it a practical solution when a compact amplifier is needed for a commercial or telephone paging system.
The BX15 can mix up to three audio sources, including microphone/telephone paging, auxiliary audio, and program-level inputs. Each unit provides 4-ohm and 8-ohm direct speaker outputs, along with transformer-isolated 25V and 70.7V distributed audio outputs.
Three-Channel Commercial Mixer Amplifier
The BX15 provides three flexible mixing channels for common commercial audio applications. The amplifier can be configured for microphone/telephone paging, auxiliary audio, program input, or multiple auxiliary sources depending on the installation.
Each auxiliary channel can accept a stereo source through dual RCA inputs, with the stereo signal converted to mono for the amplifier. The program input is electrically balanced and can accommodate balanced or unbalanced equipment.
15 Watts of Continuous RMS Power
With 15 watts of continuous RMS output, the BX15 is designed for smaller sound systems where dependable amplification is more important than high output power. Its compact design makes it well suited for background music, paging, and small commercial audio installations.
The amplifier provides transformer-isolated outputs for 25V and 70.7V speaker systems, as well as direct 4-ohm and 8-ohm speaker connections.
Paging and Voice-Activated Muting
The BX15 supports microphone and telephone paging applications. Voice- or signal-activated muting allows the priority input to override the other audio sources when paging is required. The muting function can also be defeated when an installation requires all channels to remain active.
Bass and Treble Controls
Separate bass and treble controls provide adjustment of the program and auxiliary audio for the installation. The wide-range tone controls allow the system to be adjusted for different speakers, room acoustics, and listening environments.
Music-on-Hold Output
A dedicated MOH (Music on Hold) output provides a 1-watt output at 8 ohms for feeding a telephone system's music-on-hold input or another compatible audio device. This makes the BX15 useful in installations where paging, background music, and telephone audio need to be handled from one compact amplifier.
Commercial Audio Applications
The Grommes~Precision BX15 is well suited for:
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Commercial paging systems
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Telephone paging applications
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Background music systems
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Small public address systems
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Retail stores
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Offices
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Restaurants
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Schools and small facilities
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Small sound reinforcement systems
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25V and 70V distributed audio installations
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4-ohm and 8-ohm speaker systems
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Music-on-hold applications
Key Features
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15 watts of continuous RMS power
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3-channel mixer amplifier
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Microphone/telephone paging input
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Auxiliary audio inputs
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Balanced program input
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Stereo-to-mono conversion on auxiliary RCA inputs
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Voice/signal-activated muting
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Defeatable muting function
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Separate bass and treble controls
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4-ohm and 8-ohm direct speaker outputs
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Transformer-isolated 25V and 70.7V outputs
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1W at 8-ohm Music-on-Hold output
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Output level LED meter
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Convection-cooled design
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Optional rack and wall mounting
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7-year warranty
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30-day money-back guarantee
Specifications
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Specification
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Grommes~Precision BX15
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Amplifier Power
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15W continuous RMS
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Mixing Channels
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3
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Outputs
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4Ω, 8Ω, 25V, 70.7V
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Music-on-Hold Output
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1W at 8Ω
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Microphone Input
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1mV / 600Ω balanced
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Auxiliary Input
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150mV / 10kΩ unbalanced
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Program / Telephone Input
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100mV
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Frequency Response
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50Hz–20kHz ±3dB
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Distortion
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<0.5% at rated power
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Bass Control
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±10dB at 100Hz
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Treble Control
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±10dB at 10kHz
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Dimensions
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3.5" W x 8.4" H x 11" D
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Weight
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Approximately 8 lbs
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Specifications are based on Grommes~Precision's BX Series documentation.
Why Choose the Grommes~Precision BX15?
The BX15 combines a 3-channel mixer, 15-watt amplifier, paging functionality, and 25V/70V distributed audio capability in one compact chassis. This eliminates the need for separate mixing and amplification equipment in many small commercial sound systems.
Its flexible input configuration, transformer-isolated speaker outputs, Music-on-Hold output, and rugged construction make the BX15 a practical choice for commercial paging, background music, and small distributed audio systems.
