The Grommes~Precision AX125G is a 125-watt commercial power amplifier designed for dependable background music, telephone paging, and distributed sound systems. Part of the AXIOM-G Series, this industrial-grade amplifier combines continuous RMS power, flexible speaker outputs, and automatic paging priority in a compact 2U rack-mount chassis.
With support for 4–8 ohm speakers and transformer-isolated 25V and 70.7V distributed speaker systems, the AX125G is well suited for offices, retail stores, warehouses, schools, and commercial facilities requiring reliable audio coverage.
125 Watts of Continuous RMS Power
The AX125G delivers 125 watts of continuous RMS output for commercial audio installations. Its heavy-duty power supply is designed for continuous operation, making it suitable for facilities where background music and paging systems operate throughout the business day.
Flexible 4–8 Ohm, 25V, and 70.7V Speaker Outputs
The amplifier supports conventional low-impedance loudspeakers as well as distributed audio systems using 25V or 70.7V speaker lines.
Its built-in output transformer allows installers to connect compatible commercial ceiling speakers, wall-mounted speakers, and paging horns without requiring a separate external transformer.
Telephone Paging with Automatic Music Muting
A dedicated balanced 600-ohm telephone paging input allows paging announcements to take priority over background music.
When a paging signal is detected, the AX125G can automatically mute the auxiliary music inputs so announcements can be heard clearly. This voice-activated muting feature can also be disabled when paging priority is not required.
Auxiliary Inputs for Background Music
Two parallel auxiliary inputs accommodate a background music source. The AX125G uses a 1.5-channel mixing arrangement that combines the auxiliary audio path with the independent telephone paging input.
This straightforward configuration is particularly useful for commercial systems that require background music and occasional paging without a complicated multichannel mixer.
Built-In Protection for Reliable Operation
The AX125G incorporates multiple protective features designed to help safeguard the amplifier during demanding installations.
These include short-circuit protection, current limiting, peak overload protection, thermal protection, an AC circuit breaker, and an output relay that helps prevent unwanted turn-on noises.
The AX125G is backed by Grommes~Precision's 7-year manufacturer's warranty, providing additional confidence for long-term commercial audio installations.
Compact 2U Rack-Mount Design
The AX125G occupies only two rack spaces in a standard 19-inch equipment rack. Its convection-cooled design operates without a cooling fan, eliminating fan noise and routine fan maintenance.
Designed and manufactured in the USA, the AXIOM-G Series is built for long-term commercial and industrial use.
Key Features
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125 watts continuous RMS output power
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Compatible with 4–8 ohm, 25V, and 70.7V speaker systems
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Built-in transformer for distributed speaker lines
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Independent balanced 600-ohm telephone paging input
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Automatic voice-activated auxiliary muting, defeatable
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Two parallel auxiliary inputs for background music
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Heavy-duty power supply for continuous operation
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Short-circuit, overload, current-limiting, and thermal protection
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Output relay helps prevent power-on speaker noise
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Fanless convection cooling
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Standard 19-inch, 2U rack-mount chassis
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Designed and manufactured in the USA
Technical Specifications
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Specification
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Details
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Manufacturer
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Grommes~Precision
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Model
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AX125G
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Product Series
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AXIOM-G
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Amplifier Type
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Commercial power / paging amplifier
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Output Power
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125W continuous RMS
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Mixing Channels
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1.5
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Speaker Outputs
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4–8 ohms, 25V, 70.7V
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Output Transformer
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Built-in for 25V and 70.7V
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Auxiliary Inputs
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2, connected in parallel
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Paging Input
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Balanced 600-ohm Tel-Page
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Paging Priority
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Automatic voice-activated auxiliary muting, defeatable
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Distortion at Rated Power
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Less than 0.1%
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Direct Output Frequency Response
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20 Hz–20 kHz, ±1 dB
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Distributed Line Frequency Response
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50 Hz–15 kHz, ±1 dB
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Cooling
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Convection
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Rack Height
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2U
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Dimensions (W × H × D)
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19 × 3.5 × 11 inches
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Weight
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16 lb
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Country of Manufacture
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USA
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Recommended Applications
The Grommes~Precision AX125G is an excellent choice for commercial installations requiring a single amplifier for music and paging, including:
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Retail stores and shopping facilities
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Offices and corporate buildings
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Warehouses and industrial facilities
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Schools and educational buildings
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Restaurants and hospitality spaces
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Commercial background music systems
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Telephone paging and announcement systems
Why Buy the Grommes~Precision AX125G from Audio Supply?
Audio Supply specializes in professional and commercial audio equipment for business, institutional, and installed sound applications. We can help you select compatible speakers and determine the appropriate amplifier capacity for your paging or background music system.
The Grommes~Precision AX125G offers a practical combination of continuous-duty performance, flexible speaker connections, and integrated paging priority for dependable commercial sound installations.
Need a Different Power Level?
The Grommes~Precision AXIOM-G Series offers additional amplifier options for commercial paging and background music systems.
Select the appropriate amplifier based on the total connected speaker load, transformer tap settings, and recommended system headroom.
