JBL Xtreme: 25 facts and highlights

The driver unit is the component that produces sound in the device. Bigger drivers are more powerful and can produce better bass.

There is a control panel on the device body, so you can easily access the volume control or remote without having to interact with a cable or another device it's connected to.

Devices with stereo speakers deliver sound that surrounds the user from left and right side, creating a richer sound and a better experience.

With a detachable cable you can use alternative cables, and if the cable is pulled it will pop out instead of breaking.

The lowest frequency at which the device produces audio. The lower the low-frequency response, the stronger and juicier the bass.

A speaker driver is an individual transducer that converts electrical energy to sound waves. More drivers may result in better sound quality.

An amplifier is integrated into the device. An audio amplifier takes a small signal and makes it bigger without making any other changes in it which results in better sound, so any sound source can be connected to speakers.

An auxiliary input allows you to play other audio sources by connecting them through a simple audio connection like a 3.5mm jack, i.e for MP3 or portable DVD/CD player.

A passive radiator looks like a normal driver (speaker) from the front, but on the backside all of its 'guts' are removed. Passive radiators allow woofers to produce deep tones that otherwise may not have been possible. They can have the same sonic output as larger speaker cabinets, but in a much smaller size.

The battery can be recharged and used over again.

An indicator shows you when the device has low battery.

Wireless devices allow users more freedom of movement.

The highest frequency at which device produces audio. The higher the high-frequency response, the clearer and crispier the treble.

With more USB ports, you are able to connect more devices.

More microphones result in better sound quality and enable the device to filter out background noise.

Signal-to-noise ratio is a measure that compares the level of a desired signal (meaningful information) to the level of background noise (unwanted signal), the bigger the less perceived noise.

When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction.

Multipoint allows you to link to more Bluetooth devices and switch between them. For example you can easily switch calls from one device to another without having to manually disconnect and reconnect.

Impedance is the device’s electrical resistance to the current being pushed through it. The lower the impedance, the easier it is to get higher volume and requires less power.