| Enclosure Materials and Construction |
| 3/4-inch (19mm) thick MDF construction with 1-inch (25.4mm) thick MDF front panel with radiused edges to minimize diffraction. |
| Proprietary exponential wave guide for controlled, wide dispersion from high-frequency driver. |
| Internal "H" brace adds to cabinet stiffness. |
| Open cell adiabatic "foam fill" acoustic damping material absorbs internal reflections, preventing delayed sound coloration. |
| Flush-mount connector system allows monitor to be placed against a wall without need for connector clearance. |
| Transducers |
| Low-frequency driver |
8.75-inch (222mm) die-cast magnesium frame, mineral-filled polypropylene cone, oversized magnet structure, and over 16mm cone excursion.
|
| High-frequency driver |
1-inch (25.4mm) viscous edge-damped aluminum dome with ferrofluid-cooled voice coil.
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| Passive Radiator |
6-inch x 12-inch (152mm x 305mm) elliptical flat cone composed of aluminum honeycomb/phenolic with variable thickness filleted edge neoprene surround, mass-loaded, acoustic insulated.
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| Crossover Section |
| Crossover Type |
Modified Linkwitz-Riley, 24 dB/octave @ 1800Hz
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| Sensitivity |
0 dBu nominal
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| Input Impedance |
20k ohm, balanced bridging
|
| Compressor |
Independent high and low frequency overload detection
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| Equalization |
| Acoustic Space Equalization (at 40Hz) |
A = -4dB / B = -2dB / C = flat
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| Roll Off EQ |
-3 dB@37Hz, 2nd order transitional high-pass filter
-3 dB@47Hz, 4th order Chebyshev high-pass filter
-3 dB@80Hz, 4th order Butterworth high-pass filter
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| High Freq. EQ |
± 2 dB @ 10kHz, shelving
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| Acoustic Section |
| Free Field Frequency Response |
±1.5 dB, 39Hz to 20kHz
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| Lower cutoff frequency |
-3 dB @ 37Hz
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| Upper cutoff frequency |
-3 dB @ 22kHz
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| Sound Pressure Level at 1 meter, -7.5dBu into balanced input |
100dB SPL @ 1m
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| Maximum peak SPL per pair |
120dB SPL @ 1m
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| Maximum short term SPL on axis, half space 80Hz to 2.5kHz |
111 dB SPL @ 1m
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| Residual noise (maximum gain, 600 ohms source, 20Hz-20kHz bandwidth) |
< 8dB SPL @ 1m
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|
|
HR824 Specifications
| Amplifier Section |
| Low-frequency amplifier: |
| Rated power output |
150 watts, 4 ohm load
|
| Burst power output: |
350 watts
|
| Distortion |
THD
|
< 0.035%
|
|
SMPTE IMD
|
< 0.035%
|
|
DIM 100
|
< 0.035%
|
| Slew Rate |
> 35V/µs
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| Signal-to-Noise Ratio |
> 102 dB, referenced to 150 watts into 4 ohms
|
|
| High-frequency amplifier: |
| Rated power output |
100 watts, 6 ohm load
|
| Burst power output |
210 watts
|
| Distortion |
THD |
< 0.035%
|
| SMPTE IMD |
< 0.035%
|
| DIM 100 |
< 0.035%
|
| Slew Rate |
> 35V/µs
|
| Signal-to-Noise Ratio |
> 102 dB, referenced to 100 watts into 6 ohms
|
| General |
| Power Consumption |
135 watts with musical program, loud mix
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| 18 watts quiescent (idle) |
8 watts in Standby mode
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| AC Dropout Voltage |
120V AC versions
|
80V AC
|
|
240V AC versions
|
160V AC
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| Weight |
32.5 lb. (14.77 kg)
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Since we're always striving to make our stuff better by incorporating new and improved materials, components and manufacturing methods, we reserve the right to change these specifications at any time without notice.
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