Mackie HR-824

Released in 1996, the Mackie HR824 High Resolution Studio Monitor redefined what the marketplace looks for in a studio reference monitor. One of the most loved and trusted near-field monitors of all time, the HR824 is found in countless professional studios—thanks to its clarity, broad stereo imaging, ruler-flat response, and extended low-frequency range versus other studio monitors. With such astonishing sound quality, there is little wonder why the HR824 was approved for THX compliance on its initial trial.

Mackie Active technology makes the HR824 possible. Onboard FR (Fast Recovery) amplifiers provide 150 watts to the 8.75” German-engineered MF/LF driver (aka the “woofer”) and 100 watts to the waveguide-loaded HF driver (aka the “tweeter”). The result is a smooth, accurate transition from lows to highs, with an ample 100dB SPL@1 meter output. Frequency response is verifiably flat from 39Hz-20kHz, with a 3dB down point at 37Hz. With extremely even dispersion for a wide "sweet spot" and user-adjustable controls for a variety of acoustic spaces, the HR824 is not only the choice of hundreds of professional studios, they can also be found in the tour buses and home studios of many top recording artists

Features

Worldwide standard high-resolution professional studio monitor with true Active design 8.75" low-distortion LF transducer with onboard passive-radiator provide ample, tight bass response down to 37Hz 1" HF transducer loaded onto logarithmic waveguide for wider dispersion pattern more closely matching that of LF driver True Active design with FR Series amplifiers—150W for LF / 100W for HF with onboard time- and phase-correction crossover Low Profile design, ideal for left, right, center (LRC) applications Acoustic Space, LF roll-off and HF adjustment controls for use in matching the acoustic properties of any room Non-fatiguing through hours of use XLR, 1/4" and RCA inputs Low Profile design, ideal for left, right, center (LRC) applications THX pm3 approved for 5.1 and 7.1 surround mixing and playback

Technical Data

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.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.Crossover Section - Crossover Type Modified Linkwitz-Riley, 24 dB/octave @ 1800Hz
Sensitivity 0 dBu nominal- Input Impedance 20k ohm, balanced bridging
- Compressor Independent high and low frequency overload detection
Equalization - Acoustic Space Equalization (at 40Hz) A = -4dB / B = -2dB / C = flat
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
High Freq. EQ ± 2 dB @ 10kHz, shelvingAcoustic Section - Free Field Frequency Response ±1.5 dB, 39Hz to 20kHz
Lower cutoff frequency -3 dB @ 37Hz- Upper cutoff frequency -3 dB @ 22kHz
Sound Pressure Level at 1 meter, -7.5dBu into balanced input 100dB SPL @ 1m- Maximum peak SPL per pair 120dB SPL @ 1m
Maximum short term SPL on axis, half space 80Hz to 2.5kHz 111 dB SPL @ 1mResidual noise (maximum gain, 600 ohms source, 20Hz-20kHz bandwidth) < 8dB SPL @ 1m
Low-frequency amplifier: - Rated power output 150 watts, 4 ohm load
Burst power output: 350 wattsDistortion THD < 0.035%
SMPTE IMD < 0.035%
DIM 100 < 0.035%
Slew Rate > 35V/µsSignal-to-Noise Ratio > 102 dB, referenced to 150 watts into 4 ohmsHigh-frequency amplifier: Rated power output 100 watts, 6 ohm loadBurst power output 210 wattsDistortion THD < 0.035%
SMPTE IMD < 0.035%
DIM 100 < 0.035%
Slew Rate > 35V/µsSignal-to-Noise Ratio > 102 dB, referenced to 100 watts into 6 ohmsGeneral
Power Consumption 135 watts with musical program, loud mix, 18 watts quiescent (idle) 8 watts in Standby modeAC Dropout Voltage 120V AC versions: 80V AC, 240V AC versions, 160V ACWeight 32.5 lb. (14.77 kg)