• RMS Power = 500-watts
• Stitched-On “Mini-XL” Tinsel Leads to prevent fatigue and failure
• Dual-Magnet Design for appropriate motor force factor and mid QTS
• Custom tooled cone shape for reduced mechanical noise over high excursion
• Package Dimensions: 15" x 15" x 9"

This Listing Includes:

• (1) Sundown Audio SML 12" 500W RMS Dual 2 Ohm Subwoofer SML-12-D2

The Sundown Audio SML 12" Subwoofer is designed to deliver impressive performance in a compact and durable package. With a 500W RMS power rating, this subwoofer provides deep, responsive bass while maintaining efficiency and control. Its bolt-through motor design ensures maximum longevity, eliminating visible bolts on the back for a sleek look. The black aluminum 2.5" voice coil former enhances heat dissipation, while the high-temperature 4-layer copper voice coil ensures reliable performance under heavy loads. Engineered with a dual-magnet design, vented pole-piece, and multi-vented magnetic gap, the SML-12-D2 is built for optimal airflow and cooling. Whether you're upgrading your daily driver or building a high-performance audio system, this subwoofer offers exceptional sound quality, durability, and low-distortion bass reproduction.

** This motor is bolted through the top so the bolts are not visible from the back like several other models.

Key Features

• Black Aluminum 2.5" voice coil former for superior heat dissipation


• High Temperature 4-Layer copper voice coil wire


• Stitched-On "Mini-XL" Tinsel Leads to prevent fatigue and failure


• Vented Pole-Piece and Multi-Vented Magnetic Gap


• Dual-Magnet Design for appropriate motor force factor and mid QTS


• Custom tooled cone shape for reduced mechanical noise over high excursion


• Magnet ID shorting ring


• Bolt-through motor design to ensure maximum longevity and ruggedness against mechanical failures

Subwoofer Specifications:

• Xmax = 11mm one-way by 70% BL


• Xmech is a hard limit of 25mm one-way for 12s and 20mm one-way for 10s


• RMS Power = 500-watts


• RE (Ohms) - 3.650


• FS (Hz) - 34.932


• VAS (L) - 39.012


• Qes - 0.456


• Qms - 2.862


• Qts - 0.394


• BL (NA) - 17.879


• Mms (Grams) - 182.067


• Cms (uM/N) - 114.018


• Sens (dB @ 1w/1m) - 87.5dB