A subwoofer, or sub for short, is nothing more than a loudspeaker that reproduces the bass sound of the frequency. They have a limited frequency range but contrast nicely with the higher pitched sounds from an audio unit with built-in speakers. Musicians and music enthusiasts often prefer the deep tones that subwoofers produce above the typical bass sound.

When you take a look at the Polk Audio PSW505 Subwoofer it has a frequency range of 23 Hz to 160 Hz. The point is; it will bring out the best of any musical performance. Over the years the engineers at Polk have tweaked the voice coil alignment. They’ve also added suspension in 12″ long throw driver. This is called the Klippel Optimized Woofer. The end result is the extreme volume doesn’t distort the sound. Most subwoofers you find out there have this problem all the time.

The 1960s were a time for experimental music and the louder the better. But screechy was not entertaining and Ken Kreisel decided to approach the problem. For the next ten years, Kreisel worked to perfect his electrostatic speaker system that was accompanied by a woofer to provide a lower frequency range. The first subwoofer was tested professionally in 1973 in a recording studio when Steely Dan was cutting the album, Pretzel Logic. The seventies continued to try different scenarios with the subwoofer and by 1976 there were around 300 Sensurround systems in many select theaters. Movies also used subs in shows where creating sound affects were crucial.

Before long, concert and movie houses were setting up Sensurround with subwoofers located in each corner of the room. This type of sound was not set up to blast the audience from their seats but to work together with the main speakers to provide a much more realistic sound. The 1987 Bose Acoustimass was considered a great achievement back in the day with a six-inch driver per channel. Technology continues to improve and today the Polk Audio PSW505 is considered top in its league with a 12-inch Bass driver, integrated 300-watt amplifier, adjustable crossover and magnetic shielding.

High volumes can often drag a subwoofer across the floor from the shear vibration of frequency so always check the bottom feet for sturdiness and steadfast material. The PSW505 Subwoofer comes with this feature because you will need it in testing the highs and lows of its capability to create just the right balance for your movies, music shows and games.

Over the last two decades the subwoofer has evolved into a very unique approach to optimal sound. Their controlled bass tones mesh well with any home system, which means you will never be disappointment. You can spread your speakers around however you wish, but the small main or satellite speakers should be close to the stereo, and then the other 4 or 5 can be spread out around the room. When it’s all said and done you will truly enjoy your subwoofers every time they are used.