Meyer Sound LD-1A

Beschrijving

Physical | Dimensions: 16.75″ w x 3.45″ h (2 rack spaces) x 6.96″ d | Weight: 6.12 kg | Enclosure/Finish: Black 16-gauge steel chassis; 1/8″ rack ears | Architecture | MAIN (Channels 1,2) | Controls: -12 to +6 dB | Mid-Hi, Mid-Bass/Aux, Sub Gain Controls: -12 to +6 dB | Low-cut Filter for Mid-High output: 160 Hz high-pass, -12 dB/octave, Q = 0.8 | Array EQ Filter for Mid-Hi Output: 6 dB cut at 220 Hz, 0.6 octave bandwidth | Mute: Mute switches for Master, Mid-Hi, DS-2, and Sub outputs | Polarity: Toggles for Sub and DS-2 outputs | AUXILIARY (Channels 3-8) | Gain Control: -12 to +6 dB | Low-cut filter: 160 Hz high-pass, -12 dB/octave, Q = 0.8 | Array EQ Filter: 6 dB cut at 220 Hz, 0.6 octave bandwidth | Mute: Mutes the channel output | Audio Inputs | Connector: 1 female XLR per channel | Type: Differential balanced input circuit | Impedance: 10 kΩ differential (between pins 2 and 3) | Wiring: Pin 1: chassis/earth ground; Pin 2: signal; Pin 3: signal | RF Filter: Common Mode: 425 kHz low-pass; Differential Mode: 142 kHz low-pass | Common Mode Rejection Ratio: > 80 dB (typically 90 dB); measured in the range 50 Hz – 1 kHz | Signal Presence: LED (Variable intensity; monitored at the input for each channel) | Threshold: -26 dBV (50 mVrms) pink noise or sinewave | Full Intensity: -10 dBV (300 mVrms) pink noise or sinewave | Audio Outputs | Type: Balanced, cross-coupled simulated transformer topology | Impedance: 50 ohm balanced (between pins 2 and 3) | RF Filter: Pins 2 and 3 shunted to chassis via 500 pF capacitance | CONNECTORS | Main: 4 female XLR/channel (Mid-Hi, DS-2, Sub, Loop) | Wiring: Pin 1: chassis/earth ground; Pin 2: signal; Pin 3: signal | DRIVE CAPABILITY | Maximum Voltage: 600 ohm Load: ±22.5 Vpk (+24 dBV, +26.2 dBu sinewave) No Load: ±25.0 Vpk (+25 dBV, +27.2 dBu sinewave) | Maximum Current: ±70 mApk (10 Vrms into 200 ohm) | Cables and Load: > 100,000 pF (> 1000 ft cable) without instability or distortion | AC Power | Connector: IEC 320 (line, neutral/line, earth) | Operating Voltage: 90 – 125 VAC / 180 – 250 VAC (selectable with rear panel switch); 50/60 Hz | Maximum Power: 25 Watts; Fuse: 5 x 20 mm, T 250 mA, 250 V, time-lag | Audio Performance | Frequency Response: < ±0.2 dB 20 Hz - 20 kHz | Bandwidth: DC to 60 kHz (-3dB) | Phase Response: < ±3° from pure 3 micro-sec delay (DC - 20 kHz) | Dynamic Range (2): > 120 dB | Noise Floor (3): > -95 dBV A-weighted; > -90 dBV un-weighted | THD + N (4): < 0.005% (typically 0.002%) | Gain Accuracy: < ±0.15 dB at +6 dB gain; < ±0.25 dB at 0 dB gain | Mute Attenuation: > 100 dB | GAIN RANGE | Main Channels: -24 to +12 dB | Auxiliary Channels: -12 to +6 dB