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General| Type | Powered Subwoofer |
|---|---|
| Driver Size | 18 inches |
| Output Connectors | XLR |
| Phase Switch | 0°/180° |
| Input Connectors | XLR |
| Depth | 24.5 inches |
Essential safety guidelines for operating audio equipment safely and correctly, covering numbered instructions.
Critical warnings regarding electrical hazards, opening the unit, and exposure to moisture or loud noise.
Steps for initial setup of controls, connecting audio signals, and powering on the subwoofer.
Diagrams illustrating PA systems with one or two subwoofers and powered loudspeakers.
Guide for connecting multiple subwoofers in series for expanded low-frequency output and impedance considerations.
Instructions for securely stacking multiple subwoofers, including strap recommendations for stability.
Details on the power input socket, fuse location, and procedures for fuse replacement.
Explanation of the power switch operation, standby mode, and the function of the power LED.
Describes the balanced XLR input connectors for connecting audio signals from mixers or sources.
Details the XLR outputs for passing full-range stereo signals and high-pass frequencies to main speakers.
Describes the function of the polarity invert switch for phase alignment with loudspeakers.
Information on adjusting the level control and the function of the Signal and OL (Overload) LEDs.
Explanation of the Thermal and Power indicator LEDs and their meanings during operation.
Explanation of how the polarity invert switch affects sound and phase alignment with connected speakers.
Specific polarity settings for Mackie TH-15A and SRM450v2 loudspeakers for optimal bass response.
Details on built-in limiting, overexcursion, and thermal protection circuits safeguarding the amplifier.
Guidelines for positioning the subwoofer on the floor or stage and warnings against rigging or suspension.
Steps to troubleshoot and fix issues related to the unit not turning on or producing audio output.
Guidance for resolving distorted audio, bass issues, or other sound quality problems.
Tips for identifying and eliminating unwanted noise or hum in the audio signal, including ground loop prevention.
Information on obtaining warranty and non-warranty repair services for Mackie products.
Details on using balanced XLR input and output connectors, including wiring standards.
Guidelines for connecting multiple subwoofers and understanding impedance limits to avoid source loading.
Technical data for frequency range, response, SPL, and woofer components.
Details on power amplifier, crossover type, frequency, and protection features.
Information on input type, impedance, output ports, and AC power specifications.
Details on product warranty coverage, terms, conditions, and customer support contact information.
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