Paradigm Sub 25 Signature Series Active Subwoofer

SUB 25 is Big! Big in an Elegant Way.

Like a Basso Profundo on stage at The Met. And just like a night at The Met, when SUB 25 starts to sing you know you’re going to get every note, every nuance, every deep bass thrill you paid to hear. The bottomless rumble in a movie soundtrack. Explosive special effects. That note of menace. The portent of disaster. Recreated with such vivid realism! Such pinpoint accuracy. You’re captivated. Floored. Speechless. Bass like you’ve never heard it before. Deeper and more refined. Smoother and oh, so rich. With perfect pace. Subtle texturing. Impact and weight. 3,000 watts of CONTINUOUS power! That’s a full 4 horsepower! An insane amount of current.

And then there’s the accuracy. SUB 25 is accurate down to a gruelling 9 Hz! In the average listening room it can reproduce an unbelievable 125 dB without audible distortion. And even at the highest output levels, the transition between SUB 25 and the other speakers in the system is deliciously seamless. The source of the bass, the SUB 25, simply disappears. There was a time when Paradigm’s Servos ruled the lower octaves. Now there’s a new voice on the big bass block … and it’s destined for greatness.

Control Facilities:

• Auto On/Off

• Trigger On/Off

• Subwoofer Level

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

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

• USB Port / PBK Interface

Input Facilities:

• Line-level Inputs

Mineral-Filled Co-Polymer Polypropylene Cone with RCR™ Resonance Control Ribs. Engineered for very high power, this high-stiffness design is intrinsically low in distortion allowing the bass cone to respond instantly to the starts and stops of even the leading edge of the lowest bass notes.

Advanced Multi-Layer Polyurethane-Composite Elliptical Surround and Dual Oversize Spiders. Optimized using Finite Element Analysis (FEA), a highly advanced tool for component design, the surround’s multi-layer composite matrix with its high-tech surface treatment encourages extended cone excursion. A staggering 3 (76 mm) peak-to-peak excursion, while maintaining exceptional linearity and cone control.

3 (76 mm) 8-Layer Bifilar High-Temperature Aluminum Voice Coil. Wound on a high-temperature composite former in an oversize bifilar configuration, the aluminum coil provides exceptional stability and support for the extended cone excursion.

Comprehensive Heat Dissipation System! Our robust 1/8 (3.2 mm) thick aluminum circuit board (see inset) is overlaid with insulated-metal substrates. Using an aluminum base as opposed to the more typical fiberglass base, while more expensive, encourages exceptionally efficient cooling. Even more mechanically robust than copper or ceramic, the metal substrates increase power density, minimize thermal impedance and conduct heat more efficiently while offering greater mechanical durability. FR-4-rated circuit board designs, widely used because of their exceptional efficiency, typically require larger heatsinks. In the SUB 25 however, the combination of aluminum and overlaid metal substrates allows for a heatsink much reduced in size.

Power Factor Correction (PFC). PFC shapes the current so it is sinusoidal and continuous in time, allowing maximum power (95%) to be drawn and with far less noise on the line. To compare: A unit without PFC draws only 60 to 70% of the available power since the line current is switched on and off by the input rectifier (a noise-inducing process in itself!) at twice the frequency. Current flows at the peak of the line voltage only, effectively choking the line. PFC prevents over-heating/tripping of the circuit breakers. Add to this the highly efficient Ultra-Class-D™ design ensuring maximum output and the SUB 25’s amplifier becomes an input / output powerhouse that is simply unbeatable.