PSB Subseries 500 Black Subwoofer - Excellent Condition

Great condition. Only used as a demo in our showroom when a customer came in specifically to listen to the sub

Years of experience, sophisticated design.

PSB subwoofers are designed to provide the flattest possible frequency response, full bass extension, low distortion and high output. These are characteristics that most manufacturers would strive for. Our years of experience and our sophisticated design and measurement tools allow us to achieve ideal subwoofer performance.

There are a few other parameters that we feel are very important in the design of a subwoofer. The most important of these is that a PSB subwoofer be musical. In an era of home theatre this might at first seem out of step, but we believe that a musical subwoofer will also sound the most natural when playing movie soundtracks. An ideal subwoofer should have the ability to play musically even under conditions of overload or stress. Whatever the size no subwoofer is immune from being overloaded, especially with modern movie soundtracks. For this reason, PSB subwoofers incorporate very intelligently applied proprietary limiting circuitry to prevent audible overload.

We go to great lengths to reduce any mechanical noises our subwoofers may make. Woofers are designed never to bottom harshly. Ports have large radius end flares to reduce noise from turbulence. Cabinets and amplifiers are designed so that no air leaks are possible. This attention to quality means better sound.

As in all PSB SubSeries models, this subwoofer utilizes a high efficiency high power Class H power amp. Class H is a special high efficiency amplifier design. Briefly, audio amplifiers are inherently inefficient because they are designed to have the capability of delivering great output power yet spend most of their life delivering fairly low power. Their output devices must deliver current while withstanding the high power supply “rail” voltages needed for peak outputs. With a Class H design the rail voltages are not constant. They swing high when the music demands it and stay low during quiet passages. This is achieved by a sophisticated high frequency switching power supply. Power dissipated as heat is greatly reduced and more power is available. A second benefit is that they tend to have high peak power relative to their steady state power. The SubSeries 500, for example, has 500 watts continuous power and is capable of over 1500 watt peaks. The result is a subwoofer capable of the great transients required by dynamic music and explosive sound effects. The SubSeries 500 offers the latest most efficient implementation of this special Class H technology.

The SubSeries 500 is constructed from thick MDF and aluminum extrusions forming an extremely rigid cabinet free of any audible resonances due to panel or brace movement. Large elliptical ports with large radius flanges drastically reduce port noise to inaudible levels while minimizing acoustic compression common to smaller diameter port designs. Air will create noise whenever it comes into contact with a hard surface. Minimizing the area of the surface that the air actually comes in contact with reduces this noise. A severe duty aluminum cast basket, very large magnet structure and high powered voice coil allow the SubSeries 500 to effortlessly churn out low frequencies at foundation shaking levels.

Most PSB speakers produce substantial bass on their own. Why do you need a subwoofer, too? Recreating the bottom octaves of sound is a task largely incompatible with that of the higher frequencies. By putting the deepbass system into its own enclosure we can specialize the necessary elements, package them efficiently and attractively, and locate them for best performance. Matching the capabilities of the subwoofer to the needs of the system, room, and listeners is key, so PSB offers subwoofers for freestanding placement, for in-cabinet, custom-install use, and even for almost-invisible in-wall installation.