Audiovox PEQ-200 User Manual download pdf (Page 17)

ULTRA-Q PRO PEQ2200

7.2 Effects of equalization on music program

Center frequency (Hz)

1/3 octave

Effects on music

31 to 63

Fundamentals of bass drum, tuba, double bass and organ.

These frequencies give music a sense of power. If over-

emphasised they make the music "muddy". The 50 or

60 Hz band is also used to reject AC mains hum.

80 to 125

Fundamentals of lower tympani. Too much boost produces

excessive "boom". 100 or 125 Hz are also used for hum

rejection.

160 to 250

Drum and lower bass. Too much boost produces

excessive "boom". Also useful for 3rd harmonic mains hum

rejection.

315 to 500 Fundamentals of strings and percussion.

630 to 1k

Fundamentals and harmonics of strings, keyboards and

percussion. Boosting the 600 to 1 kHz range can make

instruments sound horn-like.

1.25k to 4k

Drums, guitar, accentuation of vocals, strings and bass.

Too much boost in the 1 to 2 kHz range can make

instuments sound tinny. Too much boost anywhere

between 1 to 4 kHz can produce "listening fatigue".

5k to 8k

Accentuation of percussion, cymbals and snare drum.

Reduction at 5 kHz makes overall sound more distant and

transparent. Reduction of tape hiss and system noise. The

1.25 to 8 kHz governs clarity and definition.

10k to 16k

Cymbals and overall brightness. Too much boost causes

sibilance. Reduction of tape hiss and system noise.

Tab. 7.2: Effects of equalization on music reproduction

7. EQUALIZERS AS CREATIVE AUDIO TOOLS

1 2 ... 12 13 14 15 16 17 18 19 20 21

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Audiovox PEQ-200 User Manual Page 17