background image

16

TECHNICAL INFORMATION

Amplifier Section

Low-frequency power amplifier:

Rated Power (at 1kHz with 1% THD):

100 watts

In Japan (100 VAC):

67 watts

Rated Load Impedance:

4 ohms

Rated THD (1W to –1 dB of rated power):

0.1 %

Slew Rate:

15V/

µ

S

Distortion (THD, SMPTE IMD, DIM 100):

< 0.035%

Signal-to-Noise
(20Hz-20kHz, unweighted, referenced to 100W into 4

):

> 101 dB

Cooling:

Convection

Design:

Monolithic IC, Class AB,
Parametric Servo
Feedback

High-frequency power amplifier:

Rated Power(at 1kHz with 1% THD):

40 watts

In Japan (100 VAC):

28 watts

Rated Load Impedance:

8 ohms

Rated THD (1W to –1 dB of rated power):

0.1 %

Slew Rate:

15V/

µ

S

Distortion (THD, SMPTE IMD, DIM 100):

< 0.035%

Signal-to-Noise
(20Hz-20kHz, unweighted, referenced to 40W into 8

):

>   93 dB

Cooling:

Convection

Design:

Monolithic IC,
Conventional Class AB

System Specifications

Input Type:

Balanced Differential
(XLR & 1/4" TRS)
Unbalanced (RCA)

Input Impedance:

20k

 Balanced

10k

 Unbalanced

Input Protection:

RFI and Level Protected

Maximum Input Level:

+20 dBu

Low Cut Frequency:

80Hz, 2nd Order,
Butterworth

HF Equalization:

Shelving 

±

2 dB @ 10kHz

Acoustic Space:

A position:

–4 dB @ 50Hz, shelving

B position:

–2 dB @ 50Hz, shelving

C position:

flat

Compressor:

Independent high and low frequency overload detection

Enclosure Alignment:

6

th

 Order

Over Excursion Prevention:

2

nd

 Order High-Pass Filter

Low Line Voltage Shut Down:

60% of Nominal Line

Thermal Protection:

Amplifier Shut-Down,
Auto Reset

Specifications

Enclosure

Materials and Construction:

5

8

-inch (16mm) thick MDF construction with 1-inch

(25.4mm) thick MDF front panel with radiused edges to
minimize diffraction.

Proprietary die-cast zinc exponential wave guide for
controlled, wide dispersion from high-frequency driver.

Internal “H” brace adds to cabinet stiffness.

Open cell adiabatic “foam fill” acoustical damping mate-
rial absorbs internal reflections, preventing delayed
sound coloration.

Flush-mount connector system allows monitor to be
placed against a wall without need for connector clearance.

Transducers

Low-frequency driver:

Diameter:

6.7 inches (170mm)

Sensitivity (2.83V, 1 m):

89 dB SPL

Nominal Impedance:

Voice Coil Diameter:

1.25 inches (32mm)

Power Handling (Long Term/Program):

50/150 watts

Frequency Range:

47Hz to 6kHz

Frame:

Die Cast Magnesium

Magnet:

Ferrite

Fully shielded:

Ferrite magnet and steel
cover

High-frequency driver:

Sensitivity (2.83V, 1m):

91 dB SPL

Nominal Impedance:

Power Handling (Long Term/Program):

20/50 watts

Frequency Range:

1.6kHz to 22kHz

Diaphragm/Suspension:

Aluminum/Impregnated
Cloth

Voice Coil Diameter:

1.0 inch  (25.4mm)

Magnet:

Ferrite

Bucking Magnet:

Ferrite

Wave Guide:

Frequency Response:

2.5kHz to 20kHz,  

±

2 dB

Mouth Size:

4.3 inches diameter
(109mm)

Horizontal and Vertical Coverage:

120º, 

±

10º

3kHz to 20kHz

Passive Radiator:

6-inch x 9-inch (152mm x 228mm) mass-loaded
elliptical flat piston with variable thickness filleted edge
rubber surround.

Crossover Section

Crossover Type:

Modified Linkwitz-Riley, 24 dB/octave @ 3kHz

Summary of Contents for HR624

Page 1: ...HR624 HIGH RESOLUTION ACTIVE STUDIO MONITOR OWNER S MANUAL...

Page 2: ...ert 15 Grounding or Polarization Precautions should be taken so that the grounding or polarization means of this Mackie product is not defeated 16 Power Protection Unplug this Mackie product during li...

Page 3: ...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 What are they The Advantages TheHR624Stu...

Page 4: ...ntil you read about them later on in this manual so you really know what they do For now just leave them at the factory default set exponential waveguide which results in wide controlled dispersion of...

Page 5: ...0Hz LOW CUT 49Hz NORMAL B C RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING TOREDUCETHERISKOFFIREORELECTRICSHOCK DONOT EXPOSETHISEQUIPMENTTORAINORMOISTURE DONOTREMOVECOVER NOUSERSERVICEABLEPARTSINSIDE REFE...

Page 6: ...est bass response in a room that s optimized for bass reproduction A lot of factors can conspire to thwart the HR624s extended low frequency including room shape room volume and acoustical treatment T...

Page 7: ...channel material should have the option to use pm3 THX pm3 Certifi cation is ideal for DVD mastering sweetening and mixing and is also perfect for facilities do ing work in broadcast music or multi me...

Page 8: ...use the HR624s free standing away from walls and corners whole space set the ACOUSTIC SPACE switch to the C position NORMAL This is where you connect your signal to the monitor and make adjustments t...

Page 9: ...enhancing low frequency output use the 49Hz NORMAL position The LOW FREQ switch affects the low frequency content of your mix Remember how things work in reverse so removing the deep bass content on...

Page 10: ...r amplifiers are live and operate normally The front panel mute switch must also be OUT When it s in the AUTO ON position the amplifiers turn on and off depending on the presence or absence of an inpu...

Page 11: ...e OUT position applying AC power activates the muting circuit for about four seconds while the power supply and internal circuitry stabilize then the HR624 unmutes and is ready to go Passive Radiator...

Page 12: ...the POWER MODE switch is ON the front panel mute switch turns the HR624 on or returns it to STANDBY mode as indicated by the power LED the power LED goes off when muted If the POWER MODE switch is in...

Page 13: ...hould use high quality shielded cable to connect the signal source to the SIGNAL INPUT jack on the HR624 Foil shielded cables such as Belden 8451 8761 or 9501 are commonly used for studio wiring Micro...

Page 14: ...evice 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 SERVICE INFO Details concerning Warranty Service are spel...

Page 15: ...U S versions of our monitors is available only from our factory located in sunny Woodinville Washington Service for monitors living outside the United States can be obtained through local dealers or d...

Page 16: ...l Protection Amplifier Shut Down Auto Reset Specifications Enclosure Materials and Construction 5 8 inch 16mm thick MDF construction with 1 inch 25 4mm thick MDF front panel with radiused edges to min...

Page 17: ...e Input Voltage and Power Power consumption Standby mode 12 watts Quiescent idle 20 watts Musical Program Loud mix 105 watts Both channels driven into resistive loading to 1 clipping LF 86W 4 HF 38W 8...

Page 18: ...put was pro vided from various and sundry interested parties including ourcolorfullyconvolutedcommunica tions connoisseur and Master Geek Ron Koliha and Linn Compton proofreader extraordinaire Finally...

Page 19: ...50 100 200 500 1k 2k 5k 10k Hz HR624 High Frequency EQ Filter Response dBu 40 10 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 2 4 6 8 20 20k 50 100 200 500 1k 2k 5k 10k Hz HR624 Low Frequen...

Page 20: ...rope Asia Central South America 425 487 4333 Middle East Africa 31 20 654 4000 Fax 425 487 4337 www mackie com E mail sales mackie com Some of the people at our factory who helped design build sell an...

Reviews: