Logitech Z-540 Speaker System

Logitech Z-540 Speaker System

2 years old, excellent condition, very powerful with awesome bass.

A total of 40 Watts RMS is divided between the speakers, 20W for the subwoofer and 5W per satellite, with a system frequency response of 35Hz - 20kHz.  The subwoofer utilizes a unique “dual chamber” design that allows the speaker to generate up to twice the bass of conventional designs. 

Inside the sealed subwoofer box, we actually have two chambers.  The 4-inch driver creates the bass, and the sound is shot into the second chamber via the driver itself, and the small port at the bottom.  The bass is then reproduced by the Pressure Driver, which is reacting to the pressure created by 4-inch driver, effectively creating the same amount of bass as a true 8-inch driver.  The Pressure Driver is constructed much like an actual driver, only without the magnets and springs to move the cone.  The Pressure Driver also serves to filter out any distortion or high-frequency noises that may be present, allowing only clean bass to be heard by the listener.

The satellites are ported, each with a single driver.  The speaker wires are permanently attached to each speaker, with RCA-type plugs running to the rear of the subwoofer.  The front right satellite houses the power switch, volume control, fader, M3D controls, as well as the front and rear input wires.  A single mini-DIN connector from the front right satellite attaches to the subwoofer, completing the installation.  The sub’s power cable does not have the ugly wall-wart type plug, either, much to the relief of my overworked power strip.