JBL Xtreme review: specs and price

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

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

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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.

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The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes.

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

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Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.

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.

A passive radiator is a type of driver (speaker) that doesn't have a voice coil and a magnet. The sound vibrations produced by a passive radiator depend on its mass and the size of its enclosure. It is usually used in combination with a woofer to produce deep bass tones.

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.

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

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The battery can be recharged and used over again.

An indicator shows you when the device has low battery.

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.

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

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A standard 3.5mm male connector is suitable for use with all MP3 players and computer sound cards.

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.

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Wireless devices allow users more freedom of movement.