5-6
2.4.3 Built-in speakers
Type: Micro Speaker (8Ω, 1W + 1W) without box
Nominal Impedance: 8 Ohm
Maximum Input Power: 1 W/CH
Resonance Frequency: less than 450Hz
Speaker Size: 40 x 20 mm
When headphone connected to headphone jack, speaker outputs should be disabled.
2.4.4 Characteristic
Frequency band: 250Hz to 20kHz
Total harmonic distortion: 3% (condition: 1W, all black)
2% (condition: 50mW,all black)
Remaining behind hum: 5mVp-p (max)
(Any noise shall not be heard from the point of 30cm distance from the
monitor.)
Remaining behind buzz: 5mVp-p (max)
(Any noise shall not be heard from the point of 30cm distance from the
monitor.)
S/N ratio: 40dB (condition: all black)
S/buzz ratio: 40dB (condition: all white, contrast max)
Channel separation: 30dB
Right/left output deviation: ±1%
Sound noise by vibration of cabinet should not be heard at condition of 70% volume, 1kHz 500 mVrms input,
250Hz to 20kHz range.
2.4.5 Audio Control
Following functions must be controlled by OSM.
Volume Control
Mute function
Speaker Output Power at 1kHz, 500mVrms, volume max 1 + 0.05W.
Volume control characteristic is similar as gamma 2.2 curve.
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