i-XPS250 Speaker System for iPod

The is a one-piece 2.1 speaker system for iPod with 25 watts of total output power (2 x 5W + 15W) and 50 watts peak power. It comes with adapters to accommodate most iPod models: iPod Mini, iPod Nano (2GB, 4GB, 8GB), iPod (30GB, 60GB, 80GB), iPod Shuffle via line input), and auxiliary line input to connect any MP3 player or other external source. It has 3D stereo effect, a wireless remote to control on/off, previous/next track, increase/decrease volume, or enable 3D stereo effect. It has an external power supply. There are controls on the front face of the unit for power, volume, and 3D effect. It also features 2 x 7.1 cm magnetically shielded broadband drivers and a 10 cm subwoofer. If you love bass, you'll like what you hear--its bass drops heavy without distortion.

The technology includes:

2.1 speaker system
System for transmitting sound over three channels, with 2 channels reproducing medium and high range frequencies and 1 channel reproducing bass frequencies.

Subwoofer
The subwoofer is a speaker which reproduces bass frequencies, and is often larger than other types of speakers, as bass frequencies require larger membranes than is the case with high or medium frequencies. A single subwoofer is most often included in a speaker kit: as bass frequencies are transmitted all around the membrane (omnidirectionally) and not just in front of the membrane, a single subwoofer is sufficient to provide rich bass sound all across an area, as long as it is powerful enough. In a X.1 kit (2.1, 4.1, 5.1, 6.1 or 7.1), the digit after the period, i.e. the 1, signifies that 1 subwoofer is included.

Magnetic shielding
This shields against the magnetic field generated by speakers, for example. If a speaker is touching a CRT screen (television or computer), magnetic shielding is necessary to avoid disturbing the display.

3D stereo effect
The 3D stereo effect consists of acoustically simulating a gap between 2 speakers physically positioned relatively close to one another, as is the case when 2 speakers function together as part of a mini hi-fi system, television set, radio or single amplified unit. Also referred to as Spatial Stereo, Enhanced Stereo, or Extended Stereo.

Speaker
The unit reproduces an acoustic wave from an electrical signal, which vibrates one or more membranes, the movements creating a sound wave.

Line input
Analog audio input designed to receive an unamplified sound signal. There are 2 line levels: the general public line level, at -10dBv: this is the signal output level of a hi-fi component connected to an amplifier via a connector known as a line input. The professional line level, at +4dBu, is much more powerful, and is used to connect studio or public-address (PA) equipment.