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FS: PSB Speakers Subsonic 5i Powered Subwoofer (Black) - RELIST


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Item: PSB Speakers Subsonic 5i Powered Subwoofer (Black)
Location: Sydney (North Shore)
Price: $250 Pick-up 
Item Condition: Very Good 
Reason for selling: NLR
Payment Method: Pickup - Cash, Paypal, COD Only
Extra Info:

 

The SubSonic 5i has more power and a larger bass unit than the SubZero i. It also has a very different Class H design for its power amplification. 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 per dollar of cost. A second benefit is that they tend to have high peak power relative to their steady state power. The SubSonic 5i, for example, has 150 watts continuous but is capable of 450 watt peaks. The result is a subwoofer capable of the great transients required by dynamic music and explosive sound effects.

 

More info can be found in http://www.psbspeakers.com/products/subwoofers/SubSeries-5i-Subwoofer#heading-downloads

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