The ACV STEIN subwoofer has been designed to provide the perfect combination of SQ / SPL performance in its power class. ACV STEIN S12D2 has a maximum 4500 W and RMS power of 1500 W, it is unmatched when it comes to overall performance and connectivity with other components. During the development of the woofer, German engineers paid special attention to the TS parameters and strict build quality to achieve the highest possible sound pressure. The STEIN subwoofer is versatile enough to sound great in a wide range of music.

BASV high temperature 3-inch 4-layer dual voice coil, wrapped in round copper on an aluminum frame, combined with a massive 140oz ferrite motor. This allows deep, rich bass to be reproduced at the highest SPL levels. The model integrates an ultra-wide, stitched foam surround, and in tandem with the competition-grade cone and triple CONNEX centering disc, it sets a new precedent in terms of sound quality and power.

THIELE - SMALL parameters

Model: ACV STEIN S12D2
Xmax, mm: 16
Re, Ohm: 1.8 + 1.8
Fs: Hz37
Le, mH @ 1kHz96,717
Vas, l: 13.173
Md, g: 262.240 kg Qts, total Q factor: 0.424 / Qes, electrical quality factor: 0.461 / Qms, mechanical quality factor: 5.243
SPL (1m / 1V), dB: 83
BL, Tm: 9.990
CMS, M / N: 49,312
Krm, M Ohm: 29.951
Erm: 0.728
Kxm, m H: 149.688 / Mms, g: 362.033
Mmd, m Kg: 356,839
Exm: 0.602
Sd, M M: 43,374

Specifications

FEATURES OF THE MODEL
Voice Coil: Dual high temperature four layer round copper wound voice coil
Total System Displacement: 3.115 L
Cone: Non-pressed paper cone with foam rubber surround
Suspension Material: Rubber
Magnet: Y40 grade double high density ferrite magnet
Frequency range: 25-300 Hz

PARAMETERS
RMS power: 1500 W
Peak Power: 4500 W
Sensitivity: 84 dB
Impedance: 2+2 Ω ohms

GENERAL DETAILS
Basket: Die-cast aluminum
Subwoofer size: 12" (30 cm)
Mounting hole diameter: 280 mm
Mounting depth: 195 mm
Overall depth: 205 mm
Outer Diameter: 312 mm
Speaker terminals: Spring-loaded terminals 8-10 AWG
Weight: 11.23 kg