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 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.The HD-1 delivers a high peak SPL with a dynamic range of over 100 dB, with extremely low distortion.Its free field frequency response is flat (within +/-1 dB) from 40 Hz to 20 kHz, with each unit being individually calibrated at Meyer Sound's Berkeley, California factory.The HD-1 has an active, balanced input that is switchable between a +4 dBu and -10 dBV nominal operating level.The HD-1's transducers include a low-frequency 8-inch cone driver and a high-frequency 1-inch soft dome tweeter.The low-frequency driver's ample magnet and 2-inch voice coil yield high efficiency with rapid heat dissipation.The tweeter employs a silk-infused dome that affords smooth frequency responses while minimizing breakup and coloration.Both proprietary drivers are housed in a vented cabinet and individually tested for maximum linearity and low distortion.
Unprecedented accuracy for mixes that translate consistently
Exceptional transparency for fine control of EQ and effects
Consistent, smooth coverage pattern for 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 or compression
Applications
Near-field tracking and mixing studio monitor
High-end stereo and surround sound playback systems
Mastering studio reference monitor
Surround mixing for post production
Spec Sheet available - Yes
Free Field:
-3 dB at 32 Hz and 22 kHz, ±1 dB from 40 Hz to 20 kHz One-third octave resolution
Phase Response:
± 43 degree from 100 Hz to 18 kHz (1/24 Oct)
Signal to Noise:
> 100 dB (noise floor 20 dBA at 1 meter)
Horizontal and Vertical Coverage Angle:
60 degree
Transducers - Low Frequency:
8 inch diameter cone (2 inch voice coil)
Transducers - High Frequency:
1 inch dome tweeter (1 inch voice coil)
Crossover:
Optimized pole-zero filter combinations to complement transducer response and to achieve acoustical transparency and flat phase
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