High Resolution Active Studio Monitor HR824 MK2 OW N ER' S M A N UA L HR824 MK2 IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with dry cloth. Use a non-scratch cloth to protect the finish. 7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. 10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus. 11. Only use attachments/accessories specified by the manufacturer. 12. Use only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over. PORTABLE CART WARNING 13. Unplug this apparatus during lightning storms or when unused for long periods of time. 14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as powersupply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. 15. This apparatus shall not be exposed to dripping or splashing, and no object filled with liquids, such as vases, shall be placed on the apparatus. 16. Note that this apparatus is not completely disconnected from the AC mains service when the power switch is in the OFF position. 17. The MAINS plug or an appliance coupler is used as the disconnect device, so the disconnect device shall remain readily operable. 18. Exposure to extremely high noise levels may cause permanent hearing loss. Individuals vary considerably in susceptibility to noise-induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time. The U.S. Government's Occupational Safety and Health Administration (OSHA) has specified the permissible noise level exposures shown in the following chart. According to OSHA, any exposure in excess of these permissible limits could result in some hearing loss. To ensure against potentially dangerous exposure to high sound pressure levels, it is recommended that all persons exposed to equipment capable of producing high sound pressure levels use hearing protectors while the equipment is in operation. Ear plugs or protectors in the ear canals or over the ears must be worn when operating the equipment in order to prevent permanent hearing loss if exposure is in excess of the limits set forth here. CAUTION AVIS RISK OF ELECTRIC SHOCK. DO NOT OPEN RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL ATTENTION: POUR EVITER LES RISQUES DE CHOC ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. AUCUN ENTRETIEN DE PIECES INTERIEURES PAR L'USAGER. CONFIER L'ENTRETIEN AU PERSONNEL QUALIFIE. AVIS: POUR EVITER LES RISQUES D'INCENDIE OU D'ELECTROCUTION, N'EXPOSEZ PAS CET ARTICLE A LA PLUIE OU A L'HUMIDITE The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure, that may be of sufficient magnitude to constitute a risk of electric shock to persons. Le symbole éclair avec point de flèche à l'intérieur d'un triangle équilatéral est utilisé pour alerter l'utilisateur de la présence à l'intérieur du coffret de "voltage dangereux" non isolé d'ampleur suffisante pour constituer un risque d'éléctrocution. The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. Le point d'exclamation à l'intérieur d'un triangle équilatéral est employé pour alerter les utilisateurs de la présence d'instructions importantes pour le fonctionnement et l'entretien (service) dans le livret d'instruction accompagnant l'appareil. Duration, per day in hours 8 6 4 3 2 1.5 1 Sound Level dBA, Slow Response 90 92 95 97 100 102 105 Typical Example Duo in small club Subway Train Very loud classical music Dave screaming at Steve about deadlines Loudest parts at a rock concert 0.5 110 0.25 or less 115 WARNING -- To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. Correct disposal of this product. This symbol indicates that this product should not be disposed of with your household waste, according to the WEEE Directive (2002/96/EC) and your national law. This product should be handed over to an authorized collection site for recycling waste electrical and electronic equipment (EEE). Improper handling of this type of waste could have a possible negative impact on the environment and human health due to potentially hazardous substances that are generally associated with EEE. At the same time, your cooperation in the correct disposal of this product will contribute to the effective usage of natural resources. For more information about where you can drop off your waste equipment for recycling, please contact your local city office, waste authority, or your household waste disposal service. 2 HR824 MK2 INTRODUCTION Thank you for choosing the Mackie HR824 MK2 Studio Monitors. We began producing the original HR824 Studio Monitors in 1997, and they quickly became the standard by which near-field studio reference monitors were compared for extremely flat frequency response at a reasonable price. The HR824 MK2s have been redesigned with modern components for improved accuracy and an extended low-frequency response. · The amplifiers are designed to provide maximum acoustic output from the speakers, yet minimize the danger of speaker damage due to overdriving. In addition, the amplifiers' gain and frequency responses are individually hand-trimmed to compensate for typical manufacturing tolerances between the drivers and produce a smooth frequency response from 35 Hz to 20 kHz. The connecting wires between the amplifier outputs and the drivers are kept to an absolute minimum, so the damping factor of the amplifier isn't compromised by the resistance of long speaker cables. The acoustic sum of the outputs from the two drivers are optimized electronically, as well as physically, so the amplitude response is unity and the phase difference is minimal. · Owner's Manual Investments in Excellence... When we decided it was time to update the HR824s, we turned to our expert loudspeaker and transducer design engineering team at EAW to determine how to make an already excellent studio monitor even better. The first thing they noticed was that the front baffle could be redesigned with a rounder aluminum construction to further reduce edge diffraction for improved imaging. The volume of the cabinet was increased slightly to improve the low-frequency response. The amplifiers have been adjusted with all new `voicing' to match the new cabinets. However, the amplifiers' design is fundamentally the same and has a very similar characteristic to the original model. If you are upgrading from the original HR824s, you won't have to relearn the sound. The MK2s still deliver the clarity, ultra-linear frequency response, and broad stereo imaging of the originals. An elegant piano-black gloss finish emphasizes that these studio monitors are in a class by themselves, pleasing to the most discerning eye as well as the most discerning ear. The result? The HR824 MK2 Studio Monitors are extremely accurate and versatile, loaded with unique controls that allow you to fine-tune the sound to match your individual environment precisely. You're gonna love these! · · In short, all the complex interconnected components in the system are designed to work in harmony with each other to produce the best possible sound. The Transducers... The monitors feature an 8.75-inch high-precision, lowdistortion woofer and a 1-inch ferrofluid cooled titanium dome tweeter on the front, and a 6-inch x 12-inch elliptical flat piston passive radiator in the back. The high-frequency driver is mounted on a massive, acoustically non-resonant die-cast aluminum exponential waveguide, which results in wide, controlled dispersion of high-frequency sounds. The unique passive radiator design provides tight, articulate bass response down to 35 Hz -- an astounding accomplishment for a cabinet of this size! And since the radiator is producing most of the sound at the lowest frequencies, there is very little distortion from the woofer because its cone movement is minimal at those frequencies. What are they? The Advantages... The HR824 MK2 Studio Monitors are highresolution, two-way, bi-amplified, active monitors employing a 6th-order Butterworth system with a built-in rear-firing mass-loaded passive radiator. Whew! There are many benefits to integrating an active crossover, power amplifiers, and drivers into a single cabinet, and we've taken full advantage of these benefits in the design of the HR824 MK2. · The crossover point is designed so that the high- and low-frequency drivers are fed only the frequencies they are best able to reproduce. Tweeter Passive Radiator Power Amplifier/ Crossover Assembly Woofer Figure 1. HR824 MK2 Cutaway side view Owner's Manual 3 HR824 MK2 The Cabinet... The cabinet is made of MDF with a high-gloss pianoblack finish. Internal bracing increases the strength and rigidity (stiffness) of the box. An open-cell adiabatic foam material fills the inside of the box to absorb internal reflections and dampen standing waves. Mounting hardware is installed on the bottom of the cabinet that fits the 60.0 WB OmniMount wall-mount bracket (see "Placement" on page 6 for more info). FR Series Power Amplifiers... What better way to power the loudspeakers than with our acclaimed FR Series "Fast Recovery" power amplifiers. Our Fast Recovery design uses low negative feedback, yet allows the amplifiers to maintain low distortion and stability even when driven into clipping. The low-frequency amplifier produces up to 150 watts continuous (350 watts peak) before clipping, while the high-frequency amplifier produces up to 100 watts continuous (210 watts peak). 1. Connect the line-level monitor signal from your mixer, preamp, or other signal source to the SIGNAL INPUT [1] jack on the HR824 MK2 Studio Monitor (1/4-inch PHONE, XLR, or RCA). 2. Connect the supplied AC power cord to the IEC socket [7] on the back of the monitor. Plug the other end into an AC outlet properly configured with the correct voltage for your particular model. 3. Set the POWER MODE [6] switch on the rear panel to the ON position. With the front panel power switch [9] out, the power amplifier is in Standby mode. 4. Start your signal source (tape deck, CD, DAW, or whatever), but leave the master volume control on your mixer or preamp down. 5. Push in the power switch [9] on the front of the HR824 MK2. The power ring [10] around the switch will illuminate. 6. Slowly turn up the INPUT SENSITIVITY [2] control on the back of the monitor to its fully clockwise position (NORMAL). 7. Adjust the master volume on your mixer to a comfortably loud listening level. Enjoy the silky smooth highs and authoritative, commanding lows of the HR824 MK2. Then read the rest of this manual. QUICK START We realize that you can't wait to hook up your new Mackie HR824 MK2 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 MK2 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. You should turn the INPUT SENSITIVITY [2] control on the back of the cabinet down (fully counterclockwise) before turning on the Studio Monitors for the first time. Also be sure to set the power switch [9] on the front panel to its standby position (out). This will prevent you from accidentally connecting a hot signal source to the monitors and getting a rude surprise. There are a number of other settings you can make on the back ...