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                        HR624 MK2
High Resolution Active Studio Monitor
OWNER’S MANUAL                                                                                                                                                                                                                                                                                                                                                                                                                                                      
                    
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                        IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions.  13. Unplug this apparatus during lightning storms or when unused for long  periods of time. 2. Keep these instructions. 14. Refer all servicing to qualified service personnel. Servicing is required  3. Heed all warnings. when the apparatus has been damaged in any way, such as power- 4. Follow all instructions. supply cord or plug is damaged, liquid has been spilled or objects have  fallen into the apparatus, the apparatus has been expose
                    
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                        Owner’s Manual •  The amplifiers are designed to provide maximum  acoustic output from the speakers, yet minimize  INTRODUCTION the danger of speaker damage due to overdriving.  •  In addition, the amplifiers’ gain and frequency   Thank you for choosing the Mackie HR624 MK2 Studio  responses are individually hand-trimmed to   Monitors.  We began producing the original HR624  compensate for typical manufacturing tolerances  Studio Monitors in 2001, the baby brother to our flagship  between the dr
                    
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                        1. Connect the line-level monitor signal from your mixer,  The Cabinet... preamp, or other signal source to the SIGNAL INPUT  [1] jack on the HR624 MK2 Studio Monitor (1⁄4-inch  The cabinet is made of MDF with a high-gloss piano- PHONE, XLR, or RCA). black finish. Internal bracing increases the strength and  2. Connect the supplied AC power cord to the IEC socket  rigidity (stiffness) of the box. An open-cell adiabatic  [7] on the back of the monitor. Plug the other end into  foam material fills
                    
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                        Owner’s Manual 120 QUARTER SPACE HALF SPACE WHOLE SPACE CONSOLE CONSOLE CONSOLE SPEAKERS AWAY SPEAKERS IN CORNERS SPEAKERS AGAINST WALL FROM WALLS A B C ACOUSTIC SPACE APPLICATIONS 10kHz LOW CUT 0dB +2dB 0dB –2dB 3dB 0dB – 4dB – –2dB 49Hz 80Hz 20 100Hz LOW FREQ ACOUSTIC SPACE HIGH FREQ   WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT  EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. DO NOT REMOVE COVER.  RISK OF ELECTRIC SHOCK NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFI
                    
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                        Feel free to experiment. Placement In many respects, every room is unique in terms of its The HR624 MK2s were designed to be placed in a  acoustics. vertical position. If you find it necessary to place the  speakers in a horizontal position (on their sides), place  Even after you’ve read about how to set the HR624  them so that the woofers are toward the inside; that is,  MK2’s rear panel switches, try other settings to see if  so the woofers are closest to each other. This provides  your partic
                    
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                        Owner’s Manual A Few Words About THX™ pm3™   Contents Certification Nearly two decades ago, George Lucas turned a  IMPORTANT SAFETY INSTRUCTIONS ........... 2 passion for great sound into the world’s most accepted  INTRODUCTION.................................................. 3 and trusted solution for achieving it. The standard was  named THX (for Tomlinson Holman, who developed  QUICK START ........................................................................... 4 the THX Sound System when
                    
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                        REAR PANEL DESCRIPTION  This is where you connect your signal to the monitor,  2. INPUT SENSITIVITY and make adjustments to the frequency response of  –10dB QUARTER WHOLE (NORMAL) the speakers to match the monitor’s location and your  A C room’s environment. For THX applications, the rear panel  OFF NORMAL –2dB 0 +2dB 80Hz 49Hz STANDBY ON switches and controls should be set B LOW CUT (NORMAL) (NORMAL) AUTO HALF to the THX positions as indicated in  ON INPUT ACOUSTIC LOW HIGH POWER this section. 
                    
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                        Owner’s Manual Removing the low-frequency content also allows  4. LOW FREQ FILTER –10dB QUARTER WHOLE (NORMAL) you to raise the overall output level somewhat. Low- A C frequency information requires the largest amount of  an amplifier’s output, so restricting the low-frequency  OFF NORMAL 80Hz 49Hz –2dB 0 +2dB STANDBY content allows raising the mid-frequency level   ON B LOW CUT (NORMAL) (NORMAL) AUTO somewhat. If your client insists on mixing LOUD, this  HALF ON may be a workable strategy. INPU
                    
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                        Conversely, if your mixes are consistently too bright,  6. POWER MODE –10dB QUARTER WHOLE (NORMAL) then adding some additional high-frequency energy in  A C the monitors satisfies your ears, and the resultant mix  has less HF content. + OFF NORMAL 80Hz 49Hz –2dB 0 2dB STANDBY ON B The timbre of your monitors affects  LOW CUT (NORMAL) (NORMAL) AUTO HALF ON the way that your mixes play on other  INPUT ACOUSTIC LOW HIGH POWER equipment. Remember that the   SENSITIVITY SPACE FREQ FILTER FREQ FILTER 
                    
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                        Owner’s Manual • Simple ports or ducts must have sufficient surface  7. Mains Input area to prevent the velocity of the air within them from  exceeding 5% of the speed of sound, which keeps the  Connect the power cord to this IEC socket, and plug  vent from becoming audible (breathing and wheezing  the other end into your AC outlet.  sounds) at high signal levels. • When the POWER MODE [6] switch is in the ON  • This requirement for sufficient surface area creates a  p osition (and the front pan
                    
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                        FRONT PANEL DESCRIPTION 9. Power Switch –10dB QUARTER WHOLE (NORMAL) Use this switch to turn on or off the HR624 MK2 from  A C the front. It works with the POWER MODE [6] switch  on the rear panel in the following way: –2dB 0 +2dB OFF NORMAL 80Hz 49Hz STANDBY ON B • If the POWER MODE switch on the rear panel is set  LOW CUT (NORMAL) (NORMAL) AUTO HALF to STANDBY, the front panel power [9] switch has no ON INPUT ACOUSTIC LOW HIGH POWER effect. The power [10] ring remains off. SENSITIVITY SPACE FR
                    
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                        Owner’s Manual Thermal Protect CARE AND CLEANING All amplifiers produce heat. The HR624 MK2 is   Remove the protective plastic film that encases the  designed to be efficient both electrically and thermally.  cabinet. • If for some reason the heatsinks get too hot, a thermal  Note: You may leave the protective  switch activates, placing the HR624 MK2 into Standby  plastic film on the cabinet if you  mode (indicated when the power ring [10] turns off). wish, or you can remove all but the  • Shoul
                    
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                        Bad Sound SERVICE INFO • Is the input connector plugged completely into the  1 jack? If using a ⁄4" TS or TRS plug, make sure it is  If you think your Mackie product has a problem,  plugged all the way in. please check out the following troubleshooting tips and  • Is it loud and distorted? Reduce the signal level at the  do your best to confirm the problem. Visit the Support  mixer. section of our website (www.mackie.com/support)  where you will find lots of useful information such as  • If poss
                    
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                        Owner’s Manual Repair For warranty service, please refer to the warranty   information on page 19.  Non-warranty service for Mackie products is   available at a factory-authorized service center. To    locate your nearest service center, visit    www.mackie.com, click “Support” and select “Locate   a Service Center.”  If you do not have access to our website, please call  our Tech Support department at 1-800-898-3211 (normal  business hours, Pacific Time), to explain the problem.  They will tell
                    
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                        TECHNICAL INFORMATION HR624	MK2	Specifications Enclosure Amplifier Section Materials and Construction:  Low-frequency power amplifier  3 ⁄4-inch (19 mm) thick MDF cabinet construction with internal  Rated Power (at 1 kHz with 1% THD):     bracing to add to cabinet stiffness.    100 watts  Rated Load Impedance: 4 ohms  Piano-black gloss finish. Rated THD (1W to –1 dB of rated power):    Die-cast aluminum exponential wave guide for controlled, wide     0.1 %  dispersion from high-frequency driver 
                    
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                        Owner’s Manual Graphs Acoustic Section HR624 Acoustic Space Filter Response +10 Free-Field Frequency Response:  +9 +8    ±1.5 dB, 49 Hz to 20 kHz +7 +6 Lower cutoff frequency: –3 dB @ 45 Hz +5 +4 Upper cutoff frequency: –3 dB @ 22 kHz +3 +2 Sound Pressure Level at 1 meter,   +1 –7.5 dBu into balanced input: 100 dB SPL @ 1m dBu -0 -1 Maximum peak SPL per pair: 115 dB SPL @ 1m -2 -3 Maximum short term SPL on axis,  -4 half space 80 Hz to 2.5 kHz:  106 dB SPL @ 1m -5 -6 Residual noise (maximum gain
                    
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                        HR624 MK2 Block Diagram +15VDC POWER MODE SWITCH ON MUTE V AUTO ref ON/OFF MUTE STANDBY HIGH = MUTE OFF CONTROL LOW = MUTE ON SIGNAL THERMAL SENSE SWITCH LOW AC POWER RING VOLTS SENSE (POWER = WHITE OVERLOAD = RED) POWER SWITCH (FRONT PANEL) HF TRANSDUCER HI-FREQUENCY HF OUT UNBALANCED HI-FREQUENCY THERMAL MODELER DRIVER HF OUT LINE POWER AMPLIFIER HIGH FREQ. INPUT CROSSOVER +2 dB HI-FREQ 2 1 TWEET 0 COMPRESSOR LO-FREQ 3 –2 dB BALANCED SENSITIVITY LINE INPUTS SENSITIVE MUTE LF TRANSDUCER LF OUT 
                    
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                        Owner’s Manual Mackie	Limited	W arranty Please keep your sales receipt in a safe place. This Limited Product Warranty (“Product Warranty”) is provided by LOUD Technologies Inc. (“LOUD”)  and is applicable to products purchased in the United States or Canada through a LOUD-authorized  reseller or dealer. The Product Warranty will not extend to anyone other than the original purchaser of  the product (hereinafter, “Customer,” “you” or “your”). For products purchased outside the U.S. or Canada, ple
                    
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                        16220 Wood-Red Road NE • Woodinville, WA 98072 • USA United States 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.com