M15d4 - 15.75IN - SUB

Handles up to 1200W RMS, delivering high-impact performance for sealed and infinite baffle enclosures.

Key Features

• Custom Tooled Cast Frame ensures durability and optimized thermal performance.

• 3″ (76.2 mm) Copper Voice Coil on Aluminum Former for superior power handling and thermal stability.

• Dual Gap Motor with Aluminum Shorting Rings enhances motor force and minimizes distortion.

• ±20mm Linear Excursion, with up to 65mm peak-to-peak mechanical excursion.

• Composite Fiber Cone for reduced distortion and enhanced rigidity.

• Rubber Surround for extended flexibility and longevity.

• Push Pin Terminals for secure and easy wiring.

• Available in Dual 4-Ohm (D4) and Dual 2-Ohm (D2) Configurations.

• Optimized for sealed and infinite baffle applications, offering flexibility in installation.

Optimized Performance

The M15 Subwoofer combines high-stroke design and low-distortion performance, delivering dynamic, impactful bass with exceptional transient response. The dual-gap motor structure ensures a consistent BL (motor force) over the full stroke for accurate sound reproduction.

Technical Specifications

• Nominal Diameter: 15.75 in (400 mm)

• Displacement: 3.3 liters

• Fs (Resonant Frequency): TBD

• Qts (Total Q Factor): TBD

• Vas (Compliance Equivalent Volume): TBD

• BL (Force Factor): TBD

• Re (DC Resistance): 4 ohms

• Power Handling: 1200W RMS

• Xmax (Maximum Linear Excursion): ±20mm

• Sensitivity (SPL): TBD

Crossover Recommendations

• Crossover Frequency: Below 80 Hz is ideal for maintaining imaging and balance.

• Adjust based on system capabilities for mid-bass and midrange frequencies.

Enclosure Guidelines

• Best Suited For:

  • Moderate Sealed Enclosures (~3.0 cu.ft.)

  • Infinite Baffle Applications (ensure rear protection from elements).

• Application Notes:

  • Larger airspace reduces thermal power handling but enhances low-frequency output below 40 Hz.

Power Handling Considerations

• Ensure amplifier power matches the subwoofer’s RMS rating.

• Avoid overpowering or exceeding mechanical and thermal limits.

• Properly consider enclosure and environment for optimal performance.

Summary

The Master Series M15 Subwoofer is a robust, precision-engineered driver designed for audiophiles seeking dynamic, distortion-free bass in sealed or infinite baffle setups. Its advanced motor design, high power handling, and versatile configurations make it an excellent choice for moderate to large audio systems. Enhance your system’s performance with the M15 today!