Reiss RS-KM15.D4 15" Subwoofer 1750W RMS 2x4 Ohm

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Reiss RS-KM15.D4 is an uncompromising 15-inch subwoofer built for those who demand high power handling and deep bass response. With an impressive power rating of 1750W RMS (up to 3500W max) and dual 4 Ohm voice coils, it’s a flexible option for both ported and sealed enclosures—whether your goal is heavy SPL or tight musical bass.

The sub plays in the 30–500 Hz range with a resonance frequency (FS) of 33 Hz, delivering both punch and precision. Featuring a 76.5 x 55 mm voice coil and a moving mass of 320 grams, combined with a large cone area of 779 cm², this driver handles high power levels without losing control.

Its robust construction, with an outer diameter of Ø 408 mm, mounting depth of 206 mm, and weight of 14.5 kg, makes the RS-KM15.D4 a serious choice for installations where every part of the system must perform at the highest level. A balanced QTS of 0.48 and Vas of 43.5 liters make it adaptable to different enclosure volumes depending on the desired response.

Reiss RS-KM15.D4 is for those seeking heavy, precise, and uncompromising bass—whether you're building for competition or powerful musical experience.

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Technical Specifications

• Woofer size 15"
• Power handling RMS 1750W
• Power handling MAX 3500W
• Frequency range 30 - 500 Hz
• Impedance 2x4 Ohm
• FS 33 Hz
• RE 2 x 3.6 Ohm
• QES 0.55
• QMS 2.97
• QTS 0.48
• Vas 43.5 L
• Voice coil size 76.5 x 55 mm
• Magnet size Ø 226 mm
• Sensitivity 86 dB
• CMS 51.3
• MMS 320 g
• SD 779 cm2
• Outer diameter Ø 408 mm
• Installation depth 206 mm
• Mounting hole Ø 353 mm
• Weight 14.5 kg