Paradigm® Reference
Click image to enlargeSeismic™ 12
Single high-excursion driver, dual 254-mm (10 in) balanced-plane, high-velocity passive radiators, built-in Ultra-Class-D™ amplifier.
Seismic™ Subwoofers are Radical Designs The result of an intensive four-year research and development program, Seismic™ subwoofers are radical designs that showcase groundbreaking proprietary technology that dramatically redefines the concept of high-end performance in subwoofers of this size. Breathtaking, articulate deep bass with incredible detail, definition and massive output … all contained in an implausibly compact, refined design. Control Facilities: • Auto On/Off • Trigger On/Off • Subwoofer Level • Subwoofer Cut-Off Frequency (continuously variable 35 Hz – 150 Hz) • Bass Contour Input Facilities: • Line-level Input High-Pressure Die-Cast Aluminum Chassis. Controls flexing and ringing and since aluminum is non-magnetic, stray magnetic losses are eliminated. AVS™ Airflow Ventilation System Cooling and Huge Heatsink Fins. Provide forced air cooling during extended cone excursion and convection cooling at all other times. Mineral-Filled Co-Polymer Polypropylene Cones with RCR™ Resonance Control Ribs. Both sides of the cone are ribbed, providing superior stiffness with low mass and excellent internal damping. Super-Efficient Switching Amplifier. Over 90% efficiency, provides output of 4500 watts Dynamic Peak / 1500 watts RMS. Novel Adaptive PWM (Pulse Width Modulation) Power Processor. Minimizes distortion and optimizes efficiency. Conventional Class-D designs have very low power supply rejection. Our Ultra-Class-D™ design inherently rejects power supply variations. No Power Transformer. The output stage is Direct-Connected™ to the power line to provide maximum power. * DIN 45 500. Indicates -3 dB in a typical listening room. Overview

Specifications
SPECIFICATIONS
Design
Single high-excursion driver, dual passive radiators,
built-in Ultra-Class-D™ amplifier
Amplifier: High-Current,
Discrete Output4,500 watts Dynamic Peak /
1,500 watts RMS
Amplifier Features
Auto-On / Off, Trigger On / Off, soft clipping,
electrical shorting protection, thermal protection
Bass Driver
305-mm (12 in) RCR™ mineral-filled co-polymer
polypropylene cone, oversize surround, 76-mm
(3 in) bifilar 8-layer voice-coil, high-temperature
Apical™ former, dual spiders, AVS™ die-cast
heatsink chassis, 13-kg (29 lb) magnet structure
Passive Radiators
Dual 254-mm (10 in) balanced-plane, high-velocity
passive radiators
Low-Frequency Extension*
17 Hz (DIN)
Subwoofer Cut-Off Frequency
Variable 35 Hz - 150 Hz
Subwoofer Contour
Variable 0 to +6 dB at 60 Hz
Sub / Sat Phase Alignment
Variable 0° - 180°
Line-Level Input
RCA (S/E) or Balanced XLR. From Sub-Out /
LFE-Out of receiver, processor or other
line-level source
Line-Level Input Sensitivity
100 mV mono
Line-Level Input Impedance
RCA: 25k ohms; XLR: 20k ohms
Internal Volume
31.3 L / 1.1 cu ft
Height, Width, Depth
37.5 cm x 36.2 cm x 36.2 cm
14-3/4 in x 14-1/4 in x 14-1/4 in
(Height includes feet)
Weight (unpacked)
30.4 kg / 67 lb each
Finish
Black Ash
Reviews



Seismic™ 10

