Meyer Sound HD-1 High Definition Monitor Speaker

The HD‑1 high definition audio monitor is a self-powered loudspeaker designed for ultra-precise near-field monitoring. Optimized to approximate a point source radiator, the HD‑1 yields exceptionally broad directivity with a generous “sweet spot.” Its patented circuitry minimizes time delays and deviations from linear phase. The HD‑1 incorporates a two-channel power amplifier and a sophisticated active crossover with optimized pole zero filters for acoustical transparency and a flat frequency response. The HD-1 : High Definition Audio Monitor DATASHEET power amplifier features complementary MOSFET output stages and operates at class A at low to moderate levels (less than 90 dB SPL) and class AB at high levels.

Features:

• Unprecedented accuracy for mixes that translate consistently
• Exceptional transparency for fine control of EQ and effects
• Consistent, smooth coverage pattern for a very wide “sweet spot”
• Individual alignment provides matched pairs with pinpoint imaging
• Flat low-frequency response to 32 Hz without subwoofers
• High peak power minimizes distortion and compression

Specifications:

• Acoustical:
  • Frequency Response: 32 Hz – 22 kHz
  • Free Field:
    • 32 Hz – 22 kHz at –3 dB
    • 40 Hz – 20 kHz ±1 dB2
  • Maximum SPL: 125 dB peak (120 dB at 1 meter)
  • Signal to Noise Ratio: >110 dB (noise floor 20 dBA @ 1 meter)
• Coverage: 60° horizontal by 60° vertical
• Crossover: Optimized pole-zero filter combinations to complement transducer response and to achieve acoustical transparency and flat phase
• Transducers:
  • Low Frequency:
    • 8" cone driver
    • Voice coil size: 2"
  • High Frequency:
    • 1" dome tweeter
    • Voice coil size: 1"
• Audio Input:
  • Type: 10 kΩ impedance, electronically balanced
  • Connector: XLR female
  • Nominal Input Level: +4 dBu or –10 dBV, switchable
• Amplifier:
  • Type: Two-channel complementary MOSFET output stages (class A at low to moderate levels; class AB at high levels)
  • Output Power: 225 W (low frequency, 150 W; high frequency, 75 W)
  • THD, IM, TIM: <.02%
• AC Power:
  • Connector: 3-pin IEC male receptacle
  • Voltage Selection: Selector switch for 100, 120, 220, and 240 V AC; 50/60 Hz
  • Operating Range: 90–260, 50/60 Hz
  • Current Draw:
    • Idle Current: 0.40 A rms (120 V AC); 0.23 A rms (220 V AC); 0.47 A rms (100 V AC)
    • Maximum Long-Term Continuous Current (>10 sec): 1.15 A rms (120 V AC); 0.62 A rms (220 V AC); 1.32 A rms (100 V AC)
    • Burst Current (<1 sec): 1.82 A rms (120 V AC); 0.99 A rms (220 V AC); 2.16 A rms (100 V AC)
    • Ultimate Short-Term Peak Current: 5.60 A peak (120 V AC); 3.20 A peak (220 V AC); 6.05 A peak (100 V AC)
• Dimensions: 12.00" w x 16.00" h x 16.39" d (+ 0.5" for HF dome clearance) (304 mm x 406 mm x 416 mm)
• Weight: 51 lbs. (23.13 kg)
• Finish: Oak veneer with smooth medium gloss black