Index Page numbers in italics indicate figures, tables and footnotes 0-9, and Symbols 1.0 dB-Chebyshev crossover fourth-order 93, 94 second-order 73­75, 73­75 third-order 83­85, 84­85 1 dB-Chebyshev lowpass filter 158 3 dB-Chebyshev lowpass filter 158 3-kHz Linkwitz­Riley highpass filter, HF path 535, 538­542, 540 3-kHz Linkwitz­Riley lowpass filter, MID path 544­545 6 dB/oct dipole equalisation 306­307 ±15 V supply 522­525, 523 adding protection diodes 524 IC regulators 522, 523 peak-to-peak ripple amplitude reducing distortion by output biasing 389­394, 392­393, 396­398 with series feedback 386, 391, 393 with shunt-feedback 383, 384 in voltage-follower circuit 388 5534 opamp 381­383, 395­397 with series feedback 397 with shunt-feedback 396 A ABR, see Auxiliary bass radiator Absolute phase 46­47 Acoustic labyrinth loudspeaker 31 Active crossover 305 applications 4­5 design gain structure 534, 535 resistor value distributions 347­348 resistors 341­342 uniform distribution 348­350 system 12­13 monobloc power amplifiers 17, 18 multi-channel power amplifiers 20 multi-way cables 21­22, 21 six-channel power amplifier 21, 22 stereo power amplifiers 19­20, 19 two three-channel power amplifiers 20­21, 20 Active devices 369­370