技术特性

• Input multiplexer
  • QD1: quasi-differential stereo inputs
  • SE1: stereo single-ended input
  • SE2: stereo single-ended input
  • SE3: stereo single-ended input
  • FD1 / SE4+SE5: 1 full-differential input or 2 stereo single-ended inputs
• Loudness
  • 2nd order frequency response
  • Programmable center frequency (400 Hz / 800 Hz / 2400 Hz)
  • 15 dB with 1 dB steps
  • Selectable high frequency boost
  • Selectable flat-mode (constant attenuation)
• Volume
  • +23 dB to -31 dB with 1 dB step resolution
  • Soft-step control with programmable blend times
• Bass
  • 2nd order frequency response
  • Center frequency programmable in 4 steps (60 Hz / 80 Hz / 100 Hz / 200 Hz)
  • Q programmable 1.0/1.25/1.5/2.0
  • DC gain programmable
  • -15 dB to 15 dB range with 1 dB resolution
• Middle
  • 2nd order frequency response
  • Center frequency programmable in 4 steps (500 Hz / 1 kHz / 1.5 kHz / 2.5 kHz)
  • Q programmable 0.75/1.0/1.25
  • -15 dB to 15 dB range with 1 dB resolution
• Treble
  • 2nd order frequency response (10 kHz / 12.5 kHz / 15 kHz / 17.5 kHz)
  • Center frequency programmable in 4 steps (10 kHz / 12.5 kHz / 15 kHz / 17.5 kHz)
  • -15 dB to 15 dB with 1 dB resolution
• Speaker
  • 4 independent soft step speaker controls
  • +15 dB to -79 dB with 1 dB steps
  • Direct mute
• Subwoofer
  • 2nd order low pass filter with programmable cut off frequency (55 Hz / 85 Hz / 120 Hz / 160 Hz)
  • 2 independent soft step level control, +15 dB to –79 dB with 1 dB steps
• Mute functions
  • Direct mute
  • Digitally controlled SoftMute with 4 programmable mute-times (0.48 ms/0.96 ms/8 ms/16 ms)
• Offset detection
  • Offset voltage detection circuit for on-board power amplifier failure diagnosis

功能框图