State-of-the-Art Design ... and Beyond!

Although servo control is not new, the Paradigm Reference Servo-15’s state-of-the-art design moves beyond the traditional use of servo to merely reduce distortion. It’s one thing to have a servo system, it’s quite another to have a servo system that plays loud! This requires far greater design sophistication. From the beginning, Paradigm’s Servo-15 challenged (and changed!) all the rules. It is accurate to an astonishing 12 Hz! In a typical listening room it can reproduce a visceral 120 dB without audible distortion. Even more important is the absolute accuracy of its deep bass. Its ability to retrieve fine bass detail and follow bass lines so precisely is simply extraordinary. Paradigm Reference Servo-15 not only plumbs the depths, it does so with a shocking sense of realism!

Patented State-of-the-Art Closed-Loop Servo System

When a bass note is reproduced the Servo-15’s accelerometer instantly reads the motion and position of the driver’s cone. The signal is then relayed to a circuit that compares it to the original input signal. Discrepancies are used to create a correction signal that modifies the amplifier’s output, which in turn corrects the driver’s output. The driver then starts and stops precisely in tandem with the input signal—audible distortion is eliminated! Since electrical current moves at the speed of light, all of this occurs instantaneously and transparently.

Control Facilities:

• Auto On/Off

• Trigger On/Off

• Subwoofer Level

• Subwoofer Cut-Off Frequency (continuously variable 35 Hz – 150 Hz)

• Subwoofer Level Control

• Sub/Sat Phase Alignment (0° to 180°)

• Bass Contour

Input Facilities:

• Line-level Inputs

Next-Generation Mineral-Filled Co-Polymer Polypropylene Cone with RCR™ Resonance Control Ribs. Engineered for very high power and very low levels of distortion. Free from unwanted resonances, with high stiffness and low mass for instantaneous start and stop response.

76-mm (3 in) 8-Layer High-Temperature Bifilar Aluminum Voice Coil. A rigid, lightweight design in an oversize multiple-layer configuration for greater stability and support during extended cone travel.

Ultra-Class-D™ Switching Amplifier. Over 90% efficiency in an optimized, high-current, discrete-output design with advanced servo controller. Provides output of
4500 watts Dynamic Peak / 1500 watts RMS sustained.

SPECIFICATIONS

Design                                      Single high-excursion driver, Closed-Loop Servo system, sealed enclosure, built-in
Ultra-Class-D™ amplifier.

Amplifier: High-Current,            4,500 watts Dynamic Peak / 1,500 watts RMS

Discrete Output

Amplifier Features                    Auto-On / Off, Trigger On / Off, soft clipping, electrical shorting protection, thermal protection

Bass Driver                              380-mm (15 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.

Low-Frequency Extension*      12 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 preamp, 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                        83.5 L / 2.95 cu ft

Height, Width, Depth                51.0 cm x 46.0 cm x 55.0 cm 20-2/16 in x 18-2/16 in x 21-1/2 in (Height includes feet)

Weight (unpacked) 51.7 kg / 114 lb each