18
+2 dB
0
2
3
1
–2 dB
HIGH FREQ.
OVERLOAD
LED
HF TRANSDUCER
THERMAL MODELER
BALANCED
LINE
INPUTS
UNBALANCED
LINE
INPUT
SENSITIVITY
COMPRESSOR
CROSSOVER
HI-FREQ
WHOLE
HALF
QUARTER
ACOUSTIC
SPACE
LO-FREQ
SENSITIVE
CALLOUS
HF OUT
LF TRANSDUCER
THERMAL MODELER
LF OUT
HI-FREQUENCY
POWER AMPLIFIER
HI-FREQUENCY
DRIVER
LO-FREQUENCY
DRIVER
TWEET
HF OUT
LF OUT
MUTE
49Hz (NORMAL)
80Hz
LOW FREQ
LO-FREQUENCY
POWER AMPLIFIER
MUTE
SENSE
RESISTOR
BASS CONTROL SERVO LOOP
MOTION DETECTOR
WOOF
+
–
HI VDC
+
–
LO VDC
TOROIDAL POWER
TRANSFORMER
FUSE
Vref
ON
AUTO
STANDBY
+15VDC
SIGNAL
SENSE
MUTE
ON/OFF
CONTROL
MUTE
THERMAL
SWITCH
LOW AC
VOLTS SENSE
POWER SWITCH
(FRONT PANEL)
POWER
MODE
SWITCH
POWER
LED
HIGH = MUTE OFF
LOW = MUTE ON
MACKIE DESIGNS
HR624 THX
BLOCK DIAGRAM
(#110801DF)
OUTER SPACE
120V
↔
240V
FUSE
Colophon
The text is a compilation based on input
from a number of sources, including design engi-
neer Cam Jones, acoustic engineers Terry
Wetherbee, Mackie’s celebrated cerebral tech-
nical support staff, and several species of small
furry animals gathered together in a cave
grooving with a pict. Extensive input was pro-
vided from various and sundry interested parties
including our colorfully convoluted communica-
tions connoisseur and Master Geek Ron
Koliha, and Linn Compton (proofreader
extraordinaire). Finally, Jayney Wallick and
Dave Franzwa patiently patched the pieces
into perpetual prose with passionate precision.
Initially written in Microsoft
®
Word, the text
was imported into Adobe PageMaker
®
. Illus-
trations were produced in Adobe Illustrator
®
.
Most of the work was done on a Power Macintosh
®
G4 with Mac OS 9.1 installed and an external
hamster-driven power-supply which consumed
6.7 pounds of hamster food during the produc-
tion of this manual. This machine has a
PowerPC G4 processor, 384MB of RAM, a 28.62
GB internal hard drive, and an internal Sony
CD-ROM drive. This entire manual was written
and produced while sitting in a comfy chair.
The following are trademarks or registered
trademarks of Mackie Designs Inc.: The Mackie
logo, HR Series, and the Running Man.
THX pm3 and Lucasfilm are trademarks of
Lucasfilm Ltd. Used by permission.
This manual also contains names and
marks of other companies which belong to
those respective companies, and are hereby
acknowledged.
HR624 design protected under the following
patent: DES. 387,351
HR624 Block Diagram
©2002 Mackie Designs Inc. All Rights Reserved.
