User manual MACKIE HR824 MK2

[. . . ] High Resolution Active Studio Monitor HR824 MK2 OW N ER' S M A N UA L HR824 MK2 IMPORTANT SAFETY INSTRUCTIONS 1. Use a non-scratch cloth to protect the finish. Install in accordance with the manufacturer's instructions. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. [. . . ] Set the ACOUSTIC SPACE switch to the "A" position to reduce the low-frequency output by 4 dB to compensate for the quarter-space placement. · If you use the HR824 MK2s free-standing, away from walls and corners (whole space [3C]), set the ACOUSTIC SPACE switch to the "C" position (NORMAL). · The HR824 MK2s can be used with a home receiver even if the receiver lacks a preamp output by using a speaker-level to line-level signal attenuator. (See page 13 for more information. ) 8 HR824 MK2 ­10dB 4. LOW FREQ FILTER NORMAL PUT SITIVITY QUARTER HALF ACOUSTIC SPACE WHOLE (NORMAL) 80Hz LOW CUT 47Hz 37Hz (NORMAL) ­2dB +2dB 0 (NORMAL) LOW FREQ QUARTER SPACE HIGH FREQ. Removing the low-frequency content also allows you to raise the overall output level somewhat. Lowfrequency information requires the largest amount of an amplifier's output, so restricting the low-frequency content allows raising the mid-frequency level someSTANDBY ON what. AUTO If your client insists on mixing LOUD, this may be ON a workable strategy. POWER MODE HALF SPACE CONSOLE Owner's Manual THX = 80Hz ­10dB CONSOLE 5. HIGH FREQ FILTER CONSOLE SPEAKERS AWAY FROM WALLS WHOLE SPACE The LOW FREQ FILTER switch inserts a low-frequency rolloff into the response curve. SPEAKERS IN CORNERS SPEAKERS AGAINST WALL OFF 37Hz 0 ­2dB STANDBY ON · For some applications, the low-frequency output of the (NORMAL) (NORMAL) AUTO QUARTER HALF WHOLE ON ACOUSTIC SPACE (NORMAL HR824 MK2 may impair INPUT your ability to make mix judge- ) APPLICATIONS ACOUSTIC SPACE LOW FREQ HIGH FREQ. LOW CUT LOW CUT 10kHz 24dB/oct BUTTERWORTH 0dB +2dB · For THX applications, use the 80Hz setting. 0dB ­2dB THX = 0 dB 0dB ­3dB ­4dB · For non-THX applications where a sub-woofer isn't en­2dB The HIGH FREQ FILTER switch tailors the overall hancing low-frequency output use the 80Hz (NORMAL) 37Hz 37Hz 47Hz 20 100Hz high-frequency response by ±2 dB beginning at 10kHz. LOW FREQ ACOUSTIC SPACE HIGH FREQ Leave this switch in the 0 (NORMAL) position unless: · The LOW FREQ switch affects the low-frequency content of your mix. Remember how things work in reverse, · You want to subtly brighten or darken the sound of the so removing the deep bass content on playback may BI·AMPLIFICATION INTERNAL 150W. · Perhaps you have hearing loss caused by too many · You can use the LOW FREQ switch's 80Hz position to nights in front of a double Marshall stack. simulate a smaller loudspeaker, especially one with · You just like to mix on the bright side or dull side. limited low-frequency capability (like a certain popular If your mixes consistently sound dull or dark when 2-way nearfield monitor). You may need to do this if a you listen elsewhere, this usually indicates that your small speaker is the eventual destination of your mix, monitors are too bright, relative to your normal hearing. or perhaps just to see how your mix sounds on a clock A bit less high-frequency energy usually fixes this, and radio. you can force the mix in this direction by reducing the high-frequency output of the monitors by using the ­2 dB position of the switch. 80Hz LOW CUT 47Hz +2dB TM A NORMAL B C ­10dB OFF NORMAL QUARTER HALF WHOLE (NORMAL) 80Hz LOW CUT 47Hz 37Hz (NORMAL) ­2dB +2dB 0 (NORMAL) STANDBY AUTO ON ON INPUT SENSITIVITY ACOUSTIC SPACE LOW FREQ HIGH FREQ. POWER MODE SIGNAL INPUTS BAL/UNBAL PHONE XLR RCA PATENT NO: DES. 387, 351 MAINS INPUT Owner's Manual 9 HR824 MK2 Conversely, if your mixes are consistently too bright, ­10dB then adding some additional high-frequency energy in the monitors satisfies your ears, and the resultant mix has less HF content. OFF NORMAL 6. POWER MODE +2dB 80Hz 37Hz 47Hz 0 ­2dB STANDBY ON The timbre of your monitors affects (NORMAL) (NORMAL) LOW CUT AUTO QUARTER HALF WHOLE ON (NORMAL) INPUT the way that your mixes play on other ACOUSTIC SPACE LOW FREQ HIGH FREQ. Remember that the monitors have a mirroring effect on the This 3-position switch turns the amplifiers on or off, or mix; if the monitors make something sets them to automatic mode. Use this switch to set the too loud in the mix it usually results in not enough of HR824 MK2s to your preferred mode of operation, and that thing on tape. [. . . ] Owner's Manual 15 HR824 MK2 TECHNICAL INFORMATION HR824MK2Specifications Enclosure Materials and Construction: 3/4-inch (19 mm) thick MDF cabinet construction with internal bracing to add to cabinet stiffness. Die-cast aluminum exponential wave guide for controlled, wide dispersion from high-frequency driver and Zero Edge BaffleTM to minimize diffraction around the cabinet edges. Open cell adiabatic "foam fill" acoustical 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. Amplifier Section Low-frequency power amplifier Rated Power (at 1 kHz with 1% THD): 150 watts Rated Load Impedance: 4 ohms Burst Power Output: 350 watts Rated THD (1W to ­1 dB of rated power): 0. 1 % Slew Rate: 35V/µS Distortion (THD, SMPTE IMD, DIM 100): < 0. 035% Signal-to-Noise (20Hz-20kHz, unweighted, referenced to 150W into 4): > 102 dB Cooling: Convection Design: Class AB, Parametric Servo Feedback High-frequency power amplifier Rated Power(at 1 kHz with 1% THD): 100 watts Rated Load Impedance: 6 ohms 210 watts Burst Power Output: Rated THD (1W to ­1 dB of rated power): 0. 1 % Slew Rate: 35V/µS Distortion (THD, SMPTE IMD, DIM 100): < 0. 035% Signal-to-Noise (20 Hz-20 kHz, unweighted, referenced to 100 W into 6 ohms): > 102 dB Convection Cooling: Design: Conventional Class AB Transducers Low-frequency driver: Diameter: Sensitivity (2. 83V, 1 m): Nominal Impedance: Voice Coil Diameter: Frame: Magnet: Fully shielded: High-frequency driver: Sensitivity (2. 83V, 1m): 8. 75 inches (222mm) 91 dB SPL 4 ohms 1. 6 inches (40 mm) Die-cast magnesium Ferrite Ferrite opposing magnet 91 dB SPL Nominal Impedance: 6 Power Handling (Long Term/Program): 20/50 watts 1. 6 kHz to 22 kHz Frequency Range: Diaphragm/Suspension: Titanium with polymer suspension Voice Coil Diameter: 1. 0 inch (25. 4 mm) Neodymium Magnet: Bucking Magnet: Ferrite opposing magnet Passive Radiator: 6-inch x 12-inch (152mm x 305mm) mass-loaded elliptical flat piston with variable thickness filleted edge rubber surround. System Specifications Input Type: Balanced Differential (XLR and 1/4" TRS) Unbalanced (RCA) 20 k Balanced 10 k Unbalanced RFI and Level Protected +20 dBu Input Impedance: Crossover Section Crossover Type: Modified Linkwitz-Riley, 24 dB/octave @ 1900 Hz Input Protection: Maximum Input Level: Low Frequency Filter: ­3 dB @ 37 Hz, 2nd-order transitional high-pass filter ­3 dB @ 47 Hz, 4th-order Chebyshev high-pass filter ­3 dB @ 80 Hz, 4th-order Butterworth high-pass filter HF Equalization: ±2 dB @ 10 kHz, shelving Acoustic Space: A position: ­4 dB @ 50 Hz, shelving B position: ­2 dB @ 50 Hz, shelving C position: Flat Compressor: Independent high and low frequency overload detection Low Line Voltage Shut Down: 60% of Nominal Line Thermal Protection: Amplifier Shut-Down, Auto Reset Muting: 5 seconds at turn-on Driver Protection: Independent LF and HF Detection Overall Compression 16 HR824 MK2 Acoustic Section Free-Field Frequency Response: ±1. 5 dB, 37 Hz to 20 kHz Lower cutoff frequency: Upper cutoff frequency: ­3 dB @ 35 Hz ­3 dB @ 22 kHz 100 dB SPL @ 1m 120 dB SPL @ 1m 111 dB SPL @ 1m Graphs HR824 Acoustic Space Filter Response +5 +4 +3 +2 +1 -0 ® Owner's Manual Sound Pressure Level at 1 meter, ­7. 5 dBu into balanced input: Maximum peak SPL per pair: Maximum short term SPL on axis, half space 80 Hz to 2. 5 kHz: -1 -2 -3 d B u -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 10 20 50 100 200 500 Hz 1k 2k 5k 10k 20k Residual noise (maximum gain, 600 source, 20 Hz-20 kHz bandwidth): < 8 dB SPL @ 1m Rated Line Input Voltage and Power: Power consumption Standby mode: 8 watts Quiescent (idle): 18 watts Musical Program, Loud mix: 135 watts Rated Power (For UL-6500, CSA-E65-94, EN-60065): 150 watts US: Europe: Korea: Japan: 120 VAC, 60 Hz 240 VAC, 50 Hz 220 VAC, 60 Hz 100 V, 50-60 Hz d B u HR824 High Frequency EQ Filter Response +5 +4 +3 +2 +1 -0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 10 20 50 100 200 500 Hz 1k 2k 5k 10k 20k ® Note: The HR824 MK2 does not support multiple voltage configurations. [. . . ]