1、Product Training Introduction to IAG LoudspeakersBaffle 障板, enclosure (cabinet) 箱体 Sealed box / Infinite baffle 密闭式/无限障板式Bass reflex 低音反射式Tune port / reflex port 调谐器管Auxiliary Bass Radiator (ABR) 辅助低音辐射器（俗称假低音）Transmission line 传输线式（俗称迷宫式）Drive units 驱动单元（喇叭）-Dynamic (Moving-coil) Loudspeakers 电动（动圈
2、）式扬声器Electrostatic Loudspeakers 静电式扬声器Treble unit / tweeter 高音单元Midrange driver 中音单元Midbass driver 中低音单元Bass driver / woofer 低音单元 subwooferCrossover 分频器Crossover network 分频网路Components in a crossover network inductor 电感器, capacitor 电容器, resistor 电阻, choke 扼流圈Crossover frequency 分频点 / 交越点Full range 全
3、音域 or Multi-way 多路 2/3/N/.5：“N.5-way“ usually indicates the addition of a second woofer that plays the same bass range as the main woofer but rolls off far before the main woofer does.Filter slopes 衰减斜度 of crossover networks 1st order 一阶分频 (6dB/octave)2nd order 二阶分频 (12dB/octave)3rd order 三阶分频 (18dB
4、/octave)4th order 四阶分频 (24dB/octave)Frequency 频率 expressed in Hz (Hertz) 周, kHz (kilo Hertz) 千周, MHz (Mega Hertz) 兆周, etc.Frequency spectrum 频谱Audio frequency 音频 covers range from 20Hz 20kHzSound pressure level (SPL) 声压电平Efficiency 效率 and Sensitivity 灵敏度Sensitivity is expressed in decibels (dB) 分贝.I
5、s one filter slope superior to another?Theoretically a steeper filter slope results in a more uniform frequency response, which is vital in the reproduction of classic music. Nevertheless, this can be achieved by adopting the much gentler (1st order) filter slope with appropriate correcting circuit
6、(equalization).Current IAG loudspeakersCastle Knight Series Classic Series Lincoln HCP Richmond AnniversaryTwin-Pipe Technology (TPT) bass loading A meld of quarter wave length 四分之一波长 and reflex loadingsMission EX-800 Series - MX Series 79 Series Active subwoofers - M-iSphere Quad Electrostatic loud
7、speakers (ESL) Models ESL 2905, ESL 2805Dynamic loudspeakers - L Series, L2 SeriesStudio monitors 11 L ClassicWharfedale Airedale Classic Heritage - Neo Opus Series Evo Series -Diamond 10 Diamond 9 Obsidian HCP Active subwoofers SPC Series SPC 8, SPC 10, SPC 12Multi-channel versus Stereo (2-channel)何谓 2.1，3.1，5.1，7.1 声道? “.1”代表超低音声道（Low Frequency Effect）。Front speaker (main speaker) 前置扬声器Centre speaker 中置扬声器Surround speakers 环绕扬声器 Rear speaker 后置扬声器Side speaker 旁置扬声器Subwoofer 超低音箱 for low frequency effect (LFE)What does a subwoofer do? Why active subwoofers? .1/.2 一个或两个超低音何者较优？
