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The Bose AMM108 Multipurpose Loudspeaker is a compact and lightweight audio device designed for a variety of sound reinforcement and monitoring applications. It integrates a coaxially mounted 1.7-inch compression driver with an 8-inch low-frequency transducer, allowing it to operate across a frequency range of 75 Hz to 20 kHz. This design makes it suitable for short-throw applications in both installed and portable setups.
The primary function of the AMM108 is to deliver high-quality audio output for professional sound environments. Its multipurpose design allows it to serve various roles, including main loudspeaker, fill speaker, or stage monitor. The integrated passive crossover network is crucial for optimizing the audio signal, ensuring that the high and low frequencies are appropriately distributed to their respective drivers. This internal processing, combined with Bose loudspeaker presets, contributes to the speaker's overall performance and sonic accuracy. The coaxial driver configuration ensures a consistent and coherent sound field, which is particularly beneficial in applications where precise sound imaging is required. The speaker is designed to be robust, making it suitable for demanding live sound and installation environments. Its compact form factor facilitates easy placement and integration into existing audio systems.
The AMM108 is engineered for versatility and ease of integration into various audio setups. Its lightweight enclosure makes it highly portable, allowing for quick deployment and repositioning in temporary installations or touring applications. For permanent installations, the speaker's design allows for discreet placement without compromising acoustic performance. The inclusion of an internal passive crossover network simplifies system setup, as it reduces the need for external processing for basic operation. Users can further optimize the speaker's performance by utilizing Bose loudspeaker presets, which are designed to tailor the sound for specific applications and environments. These presets ensure that the speaker delivers its best possible performance, whether used as a main PA, a delay fill, or a stage monitor. The speaker's robust construction is intended to withstand the rigors of professional use, ensuring reliability over time. Its compatibility with various mounting options (though not explicitly detailed, implied by "multipurpose" and "installed applications") further enhances its adaptability. The design focuses on delivering clear and impactful sound, making it a reliable choice for speech, music, and other audio content.
The Bose AMM108 Multipurpose Loudspeaker is designed with a focus on professional servicing rather than user-level maintenance. The manufacturer explicitly states that the device contains no user-serviceable parts, emphasizing that any servicing should be referred to authorized warranty service stations or factory service to prevent warranty infractions. This approach ensures that repairs and maintenance are performed by trained professionals using appropriate tools and genuine parts, thereby preserving the speaker's performance and longevity.
However, the service manual provides detailed disassembly procedures for authorized technicians, indicating that internal components can be accessed for repair or replacement when necessary. Key disassembly steps include:
The manual also highlights the presence of Electrostatic Discharge Sensitive (ESDS) devices within the unit. For authorized technicians, specific precautions are outlined for handling ESDS devices during repair, replacement, or transport. These include working at an electrically grounded workstation, wearing wrist and heel straps, avoiding direct contact with leads or contacts, handling boards by their edges, and storing ESDS devices in protective bags or bins.
Functional test procedures are provided for technicians to verify the speaker's performance after servicing. These include:
The service manual also includes detailed part lists for packaging, main assembly, crossover PCB, and I/O assembly, providing material numbers for replacement parts. Critical safety parts are identified with a special symbol, emphasizing the importance of using recommended replacement parts to prevent hazards. The warranty information specifies a limited 5-year transferable warranty, with units failing within 90 days of sale being eligible for replacement. This comprehensive approach to maintenance and servicing ensures that the AMM108 maintains its operational integrity and performance standards throughout its lifespan, albeit through professional intervention.
General| Power Rating | 300 W |
|---|---|
| Sensitivity (SPL / 1W @ 1 m) | 90 dB |
| Nominal Impedance | 8 ohms |
| Low Frequency Transducer | 1 x 8-inch woofer |
| High Frequency Transducer | 1 x compression driver |
| Enclosure Material | Plywood |
| Finish | Black |
| Suspension / Mounting | M8 threaded inserts |
| Type | 2-way passive loudspeaker |
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