UE ROLL

Last updated
UE ROLL
UE-ROLL-black.JPG
Inception 2015
Manufacturer Ultimate Ears
Website Official website

The UE ROLL is an ultra-portable speaker manufactured by Ultimate Ears, supporting Bluetooth and wired connections.

Loudspeaker transducer that converts electrical energy into sound energy; electroacoustic transducer; converts an electrical audio signal into a corresponding sound

A loudspeaker is an electroacoustic transducer; a device which converts an electrical audio signal into a corresponding sound. The most widely used type of speaker in the 2010s is the dynamic speaker, invented in 1925 by Edward W. Kellogg and Chester W. Rice. The dynamic speaker operates on the same basic principle as a dynamic microphone, but in reverse, to produce sound from an electrical signal. When an alternating current electrical audio signal is applied to its voice coil, a coil of wire suspended in a circular gap between the poles of a permanent magnet, the coil is forced to move rapidly back and forth due to Faraday's law of induction, which causes a diaphragm attached to the coil to move back and forth, pushing on the air to create sound waves. Besides this most common method, there are several alternative technologies that can be used to convert an electrical signal into sound. The sound source must be amplified or strengthened with an audio power amplifier before the signal is sent to the speaker.

Ultimate Ears American headphone company

Ultimate Ears is an American custom in-ear monitor (IEM), speaker, and earphone manufacturer based in Irvine and Newark, California, United States.

Bluetooth is a wireless technology standard for exchanging data between fixed and mobile devices over short distances using short-wavelength UHF radio waves in the industrial, scientific and medical radio bands, from 2.400 to 2.485 GHz, and building personal area networks (PANs). It was originally conceived as a wireless alternative to RS-232 data cables.

Contents

Announced on June 16, 2015, [1] the UE Roll replaces Ultimate Ears's UE MINI BOOM as the company's lower-end model. [2]

Design and features

The speaker is of a discus-like shape, 13.5 cm (5.3 in) in diameter, 4.4 cm (1.7 in) maximum thickness, and weighing 330 grams (12 ounces). [3] It is coated in a water-, dirt-, and stain-proof material and partly covered with rubber. [3] Ultimate Ear's claims that the speaker is IPX7-rated waterproof, meaning that it can be fully submerged in water up to 1 m (3 ft 3 in) depth for up to 30 minutes. [3]

The speaker comes in several colour schemes, and includes a "snap & go" bungee cord loop attached to the back of the device, which can be detached on one end. It is suggested that this allows the speaker to be hung up, or attached to, fixtures, as well as clothing, shower heads, bicycles, or even a person's hand. [2]

UE ROLL consists of a 51-millimetre (2 in) driver coupled with two 19-millimetre (3⁄4 in) tweeters which are in stereo, so there is a small amount of stereo separation. In terms of sound output, it supports a maximum of 85 dBA in a range of 108 Hz–20 kHz. In addition to supporting Bluetooth, the speaker can be connected via a standard 3.5mm audio input. It also supports Bluetooth 4.0, allowing it to be remotely switched on by a connected mobile device running Ultimate Ear's app, and giving the speaker a wireless range of up to 20-metre (66 ft). [3]

A rechargeable lithium-ion battery is built into the UE ROLL, providing up to 9 hours of playback. Charging is done using a provided micro-usb to usb cable, and is estimated to take 5.5 hours for a full charge. [3]

Lithium-ion battery rechargeable battery type

A lithium-ion battery or Li-ion battery is a type of rechargeable battery in which lithium ions move from the negative electrode to the positive electrode during discharge and back when charging. Li-ion batteries use an intercalated lithium compound as one electrode material, compared to the metallic lithium used in a non-rechargeable lithium battery.

Critical reception

While generally well received as a rugged, weather-proof speaker, the UE ROLL has been criticised for a lack of deep bass. [4]

TechRadar described the UE ROLL's greatest flaw being "that it replaces the Mini Boom". [2]

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References

  1. ↑ "ULTIMATE EARS INTRODUCES NEW MOBILE SPEAKER DESIGNED FOR WHATEVER, WHEREVER, WHENEVER". Ultimate Ears. Retrieved 28 October 2015.
  2. 1 2 3 Faulkner, Cameron. "UE Roll review". TechRadar. Retrieved 28 October 2015.
  3. 1 2 3 4 5 "UE ROLL product page". Ultimate Ears. Retrieved 28 October 2015.
  4. ↑ Greenwald, Will. "Ultimate Ears UE Roll". PCMag. Retrieved 28 October 2015.
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