HR824 HIGH RESOLUTION ACTIVE STUDIO MONITOR OWNER’S MANUAL OL PWR ON HIGH RESOLUTION STUDIO MONITOR
CAUTION 10. Power Cord Protection — Power supply cords should be routed so that they are not likely to be walked upon or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit this Mackie product.
INTRODUCTION To accomplish the task at hand, Greg and the New Product Development team realized that a commitment was required in terms of new resources and new equipment. So we recruited some of the best speaker and acoustic engineers in the industry to assist in the design of the HR824. And we invested in some advanced (and need we say expensive) measurement and analysis tools for the design team to use.
OL PWR ON HIGH RESOLUTION STUDIO MONITOR QUICK START. We realize that you can’t wait to hook up your new Mackie Designs HR824 High Resolution Studio Monitors and try them out. Nevertheless, please take the time to read this page NOW, and the rest can wait until you’re good and ready. Each of the HR824 cabinets has its own builtin power amplifiers. That’s right, two amplifiers per speaker cabinet; one for the high-frequency tweeter and one for the low-frequency woofer.
ACOUSTIC SPACE APPLICATIONS QUARTER SPACE HALF SPACE CONSOLE CONSOLE WHOLE SPACE CONSOLE SPEAKERS IN CORNERS SPEAKERS AGAINST WALL SPEAKERS AWAY FROM WALLS A B C LOW CUT LOW CUT 24dB/oct BUTTERWORTH 10kHz 0 dB +2dB – 2dB – 4dB 0 dB –3dB 37Hz 47Hz 0 dB –2dB 80Hz 20 100Hz LOW FREQ ACOUSTIC SPACE HIGH FREQ.
AN EXTREMELY IMPORTANT NOTE ON HR824 BASS RESPONSE AND YOUR CONTROL ROOM. Your new HR824s achieve their best bass response in a room that’s optimized for bass reproduction. A lot of factors can conspire to thwart the HR824s’ extended low frequency — including room shape, room volume and acoustical treatment. This is not a cop-out or an apology. It’s plain old physics in action.
A Few Words About THX® pm3™ Certification Nearly two decades ago, George Lucas turned a passion for great sound into the world’s most accepted and trusted solution for achieving it.
REAR PANEL DESCRIPTION This is where you connect your signal to the monitor, and make adjustments to the frequency response of the speakers to match the monitor’s location and your room’s environment. SIGNAL INPUTS The location of the signal input jacks makes the connectors exit down and not straight out the back of the enclosure. This flush-mount design allows you to place the monitor right up against the wall if desired. • XLR female, TRS female, and RCA female connectors, parallel connected.
LOW FREQ somewhat. Low-frequency information requires the largest amount of an amplifier’s output, so restricting the low-frequency content allows raising the mid-frequency level somewhat. If your client insists on mixing LOUD, this may be a workable strategy. 80Hz 47Hz 37Hz LOW CUT (NORMAL) LOW FREQ HIGH FREQ The LOW FREQ switch inserts a steep lowfrequency rolloff into the response curve. • For many applications, the low-frequency output of the HR824 may impair your ability to make mix judgements.
Conversely, if your mixes are consistently too bright, then adding some additional high frequency energy in the monitors satisfies your ears, and the resultant mix has less HF content. The timbre of your monitors affects the way that your mixes play on other equipment. Remember that the monitors have a mirroring effect on the mix; if the monitors make something too loud in the mix it usually results in not enough of that thing on tape.
Connect the power cord to this IEC socket, and plug the other end into your AC outlet. switch is in • When the POWER MODE switch the ON position, and the power is in the ON position, applying AC power activates the muting circuit for about four seconds while the power supply and internal circuitry stabilize.
FRONT PANEL DESCRIPTION Power Switch Use this switch to turn on or off the HR824 from the front. It works with the POWER MODE switch on the rear panel in the following way: • If the POWER MODE switch on the rear panel is set to STANDBY, the front panel switch has no effect. The PWR power LED remains off. • If the POWER MODE switch is ON, the front panel power switch turns the HR824 on or returns it to STANDBY mode, as indicated by the PWR LED.
Thermal Protect All amplifiers produce heat. The HR824 is designed to be efficient both electrically and thermally. • If for some reason the heatsinks get too hot, a thermal switch activates, placing the HR824 into Standby mode (indicated when turns off). the red PWR LED • Should this happen, make sure that airflow to the rear of the cabinet is not restricted. • When the heatsinks cool down to a safe temperature, the switch resets and normal operation resumes.
Service Info Details concerning Warranty Service are spelled out on the Warranty Card included with your monitor (if it’s missing, let us know and we’ll rush one to you). If you think your monitor has a problem, please do everything you can to confirm it before calling for service, including reading through the following Troubleshooting section. Doing so might save you from deprivation of your monitor and the associated suffering.
• Make sure the signal cable is not routed near AC cables, power transformers, or other EMI sources (including wall warts and line lumps!). These sources usually produce hum. • Is there a light dimmer or other triac-based (SCR) device on the same AC circuit as the monitor? Dimmers cause buzzing noises. Use an AC line filter or plug the monitor into a different AC circuit. • Excessive hiss is an indication of an incorrect gain setting somewhere before the speaker.
Technical Information HR824 Block Diagram +15VDC POWER MODE ON SWITCH AUTO STANDBY Vref SIGNAL SENSE HIGH = MUTE OFF LOW = MUTE ON MUTE ON/OFF CONTROL MUTE THERMAL SWITCH PWR LED LOW AC VOLTS SENSE POWER SWITCH (FRONT PANEL) OVERLOAD LED CLIP SENSE CIRCUIT CLIP SENSE UNBALANCED LINE INPUT 1 BALANCED LINE INPUTS HIGH FREQ.
Crossover Section Acoustic Section: Crossover Type: Modified Linkwitz-Riley, 24 dB/octave @ 1800Hz Free-Field Frequency Response: ±1.5 dB, 39Hz to 20kHz Input Impedance: 20kΩ, balanced bridging Lower cutoff frequency: –3 dB @ 37Hz Upper cutoff frequency: –3 dB @ 22kHz Compressor: Independent high and low frequency overload detection Sound Pressure Level at 1 meter, –7.
Graphs COLOPHON HR824 Acoustic Space Filter Response ® +5 +4 +3 +2 +1 -0 -1 -2 -3 d B u -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 10 20 50 100 200 500 1k 2k 5k 10k 20k Hz HR824 High Frequency EQ Filter Response ® +5 +4 +3 +2 +1 -0 -1 -2 -3 d B u -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 10 20 50 100 200 500 1k 2k 5k 10k 20k Hz HR824 Low Frequency Filter Response ® +5 +3 +1 -1 -3 The text is a compilation based on input from a number of sources, including distinguished design e
HR824 LIMITED WARRANTY Please keep your sales receipt in a safe place. A. Mackie warrants all materials, workmanship and proper operation of this product for a period of three years from the original date of purchase. If any defects are found in the materials or workmanship or if the product fails to function properly during the applicable warranty period, Mackie, at its option, will repair or replace the product. This warranty applies only to equipment sold and delivered within the U.S.
Mackie Designs Inc. 16220 Wood-Red Road NE • Woodinville, WA 98071 • USA US and Canada: 800.898.3211 Europe, Asia, Central and South America: 425.487.4333 Middle East and Africa: 31.20.654.4000 Fax: 425.487.4337 • www.mackie.com E-mail: sales@mackie.
