Home Theater Speakers and Subwoofers

J&R Music and Computer World

The new JBL SUB 550P 300-watt powered Subwoofer incorporates a 10" (250mm) forward-firing cone Transducer and a built-in high-performance-3 00-watt RMS amplifier that delivers the powerful, dynamic and accurate low-frequency performance that makes your film soundtracks and Music come alive. And with line-level and LFE inputs, adjustable crossover and phase controls and automatic turn on/off, the SUB 550P is also simple to connect and set up. -Performance so powerful and perfect you feel as if youre part of the movie youre watching: The JBL SUB550P delivers the full impact and excitement of todays blockbusters and resonates without unwanted distortion, thanks to the built-in 300W RMS amplifier. -Low-frequency transducer: 250mm (10") PolyPlas cone, cast frame-Amplifier power: 300 Watts RMS;... Less

Just like Matthew Polks Signature Reference Theater (SRT) system, the components used in the RT Series benefit from Dynamic Balance, a technology which came out of a joint research project between Polk Audio and Johns Hopkins University. This Laser imaging research enabled Polk to view on a microscopic level the entire vibrating surface of a Driver or tweeter. By this method Polk was able to observe the resonances, which develop on speaker cones as they move. These resonances are the root cause of Frequency response distortions. As an x-ray enables a physician to discover the root cause of a symptom and prescribe the right treatment for a cure, this laser imaging technique allowed Polk engineers to find the right combinations of high tech materials, geometry and construction techniques to... Less