■ 喇叭單體 ＆ 單音箱型式
超低音單體　尺寸規格：(？吋) （Super Woofer Driver）	12
超低音單體 單體數量：(？支)
單體設計材質：（例：鋁製夾心圓錐）	2 x 300 mm , AS 振膜(Push - Push / Pull - Pull)
主動式 or 被動式 系統	主動式
頻率響應　？Hz ~ ？kHz 數值範圍 ( Frequency Response )	17 - 180 Hz
設計型式 1：低音反射式 / 密閉 氣墊式	雙單體氣墊式
設計型式 2：低音單體~正面發聲 / 低音單體~向下發聲
設計型式 3：✔ 推挽式
■ 擴大機功率 ＆ 頻率範圍調整 ＆ 輸出入端子
擴大機 輸出功率 ( RMS / 峰值 ) ？瓦	1,200 W
頻率響應　？Hz ~ ？kHz 數值範圍 ( Frequency Response )
✔ 低通濾波 ( 連續可調 )	✔
✔ 低通濾波 ( 使用 無線介面 App 調整 )
✔ 相位選擇
輸入端子：RCA x ？組 ／ 高電位 x ？組	RCA/XLR x 1 , 高電位 x 3 , 無線介面 Free App BLE - Control for iOS 7 and Android 4
輸出端子：RCA x ？組 ／ 高電位 x ？組
✔ 自動電源啟閉  　( Auto Power )
■ 外觀型式
外觀顏色 ( 表面材質處理 )
外觀尺寸 ( 高 × 寬 × 深 mm） ( Dimensions ( H × W × D mm))	533 x 420 x 425 mm
淨重： 公斤　kg 數值 （ Net Weight / kg ）	40 kg

Subwoofers

超低音

憑藉多年設計揚聲器的經驗，原廠將一切先進科技運用到超低音去，使用「啞鈴狀」雙低音單體以反方向推挽運動（Push-Push/Pull-Pull），兩個單體所推動的空氣量有相乘的效果。這種設計能得到前所未有的豐富極低頻細節、敏捷的暫態反應與豐沛的量感。

在對應環繞擴大機 LFE 訊號輸出的一組輸入之外，還配備三組喇叭線輸入端子，讓多聲道系統裡前方左中右三聲道都可獲得超低音的火力支援。

SUB 211D其中正面搭載一支10吋主動式單體，底部另加一支12吋被動輻射器單體，降低一般低音反射孔氣流雜音，低音深沉、暫態敏捷。

Brains and brawn.

How smart can a subwoofer be? Thanks to the ELAC SubEQ app and the Advanced Bluetooth® control interface, listeners can simply pair an iPhone®, iPad® or Android® device with the new ELAC SUB 2090, 2070 and 2050 subwoofers and adjust the sound to their preferences. Intuitive, comprehensive and downloadable, free of charge, this clever app means there are no complicated network connections, as the subwoofer and mobile device communicate directly via BLE (Bluetooth® Low Energy).

Doing away with traditional analog controls means no fiddly adjustments at the rear of the subwoofer. Four preset modes can be selected at the touch of a finger: Normal, Music, Cinema, and Night. Those who want to explore the possibilities of the app-control system further will discover genuine pro-audio options such as a parametric equalizer, a low-pass filter, and individual settings for power-saving auto-on function. The the most exciting option is the calibration function, which uses the microphone on your smart-phone to listen to the volume, frequency response and sound reflections in the room before automatically optimizing the sound of your ELAC subwoofer.

The new ELAC subwoofers can be connected directly using loudspeaker cables (left, center, right) or stereo RCA cables. With the SUB 2090, symmetrical wiring can be also used. And if you prefer to dispense with wires altogether, the new high-performance subwoofers are equipped with an ELAC Wireless Interface for wireless music transmission.

PRODUCT DETAILS

The challenge for powered subwoofers and their amplifiers

Audio quality and power efficiency have long been at odds when it comes to amplifier design. Traditional Class AB amplifiers, which account for about 90 percent of all amplifiers made, are capable of producing prodigious power and excellent sound, but do so at the expense of efficiency. In fact, up to 50 percent of these amplifiers’ energy is wasted, dissipated as heat. Heat becomes an added liability when such amplifiers, in the case of powered subwoofers, are enclosed in a speaker cabinet. Class D switching amplifiers, on the other hand, run cool and occupy relatively little space. Compact, lightweight and efficient, they are a sensible choice for the latest applications, especially when used for powering subwoofers. Typically, however, the sound quality achieved by typical Class D designs has not been suitable for the best audio applications, but new technology has improved these designs to compete with the best of traditional amplifier topologies.

Enter BASH® amplification

BASH (Bridged Amplifier Switching Hybrid) amplifiers represent a “best of both worlds” solution for subwoofer amplification, combining the sound quality of Class AB with the efficiency of Class D amplifiers. While a Class AB amp uses fixed supply voltage regardless of input signal, BASH uses a modulated switched mode power supply that tracks the input signal, supplying only the necessary voltage to the Class AB amp as needed. The latest BASH technology has gone through three core evolutions and is further refined in these latest ELAC Debut subwoofers.

Push-push/Pull-pull configuration

The SUB 2090 and SUB 2070 deliver perfect, clean and distortion-free reproduction of low frequencies, employing a push-push/pull-pull arrangement of the two woofers that eliminates vibrations and mechanical resonances. Positioned opposite to one another but electrically driven in parallel, the acoustical output of both drivers is added up, but the mechanical forces cancel one other. Hence, no mechanical distortion remains to compromise the purity of the bass spectrum.

Down-firing driver

Allowing for more flexible speaker placement and to minimize ventilation noise, the bass reflex port of the SUB 2050 and SUB 2030 is directed out the bottom of the enclosure in a down-firing orientation.

Advanced Bluetooth® control

SUB 2090, SUB 2070 and SUB 2050 subwoofers incorporate an advanced, digital control system. Analog rotary potentiometers and switches have been replaced by a digital signal processor (DSP), which allows users to adjust the subwoofer conveniently and accurately. All parameters, such as volume, cutoff frequency, phase etc., as well as the automatic calibration function, can be conveniently adjusted with the help of the ELAC app.

Auto power On/Off

Debut subwoofers will detect when audio is being sent to the unit and power the unit on. Also, to conserve energy, the subwoofer will power off after a long period of inactivity.

The foundation.

The SUB 2090 offers earth-shaking bass performance combined with speed, clarity and unmatched impact. The push-push/pull-pull principle is applied to two 300 mm woofers, oppositely positioned, which are additionally joined by a massive tension rod that eliminates mechanical vibration. Driven by a state-of-the-art 1,200-Watt BASH amplifier, the performance is breathtaking, with an extended frequency range underscored by fantastic precision and unfettered dynamics. In comparison to the other models, the SUB 2090 offers symmetrical inputs and a special app that enables functionality matched by perfect acoustics in every environment.

*1,200 Watts Max Power

**A Bluetooth 4.0 low-energy Android or IOS device is required to set up and operate this subwoofer.

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