9
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.
HIGH FREQ FILTER
0
(NORMAL)
–
2dB
+
2dB
HIGH
FREQ FILTER
THX = 0 dB
The
HIGH FREQ FILTER
switch tailors the
overall high-frequency response by
±
2 dB be-
ginning at 10kHz. Leave this switch in the
0
(NORMAL)
position unless:
• You want to subtly brighten or darken the
sound of the speakers.
• Perhaps you have hearing loss caused by
too many nights in front of a double
Marshall stack.
• You just like to mix on the bright side or
dull side.
If your mixes consistently sound dull or dark
when you listen elsewhere, this usually indicates
that your monitors are too bright, relative to
your normal hearing. A bit less high-frequency
energy usually fixes this, and you can force the
mix in this direction by reducing the high-
frequency output of the monitors by using
the –2 dB position of the switch.
LOW FREQ FILTER
LOW
FREQ FILTER
80Hz
LOW CUT
49Hz
(NORMAL)
THX = 80Hz
The
LOW FREQ FILTER
switch inserts a
low-frequency rolloff into the response curve.
• For some applications, the low-frequency
output of the HR624 may impair your ability
to make mix judgements.
• For THX applications, use the
80Hz
setting.
• For non-THX applications where a sub-
woofer isn’t 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 playback may actually
increase it in the final mix.
• You can use the
LOW FREQ
switch’s
80Hz
position to simulate a smaller loudspeaker,
especially one with limited low-frequency
capability (like a certain popular 2-way
nearfield monitor). You may need to do this
if a small speaker is the eventual destina-
tion of your mix, or perhaps just to see how
your mix sounds on a clock radio.
Removing the low-frequency content also
allows you to raise the overall output level
somewhat. Low-frequency information requires
INTERNAL BI•AMPLIFICATION
100W L.F. / 40W H.F.
™
22 kHz
49Hz
–
3dB
–
3dB
1.5dB 52Hz
–
20kHz
+
–
INPUT
SENSITIVITY
–10dB
NORMAL
OFF
"MACKIE", "FR SERIES", AND THE "RUNNING MAN" FIGURE ARE REGISTERED TRADEMARKS OF MACKIE DESIGN INC.
ACOUSTIC
SPACE
LOW
FREQ FILTER
POWER
MODE
0
(NORMAL)
AUTO
ON
–2dB
+2dB STANDBY
ON
HIGH
FREQ FILTER
HALF
WHOLE (NORMAL)
QUARTER
80Hz
LOW CUT
49Hz
(NORMAL)
B
C
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING:
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. DO NOT REMOVE COVER.
NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
CAUTION
AVIS:
RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR
CONCEIVED AND DESIGNED BY MACKIE DESIGNS INC • WOODINVILLE • WA • USA
© 2001 MACKIE DESIGNS INC. • ALL RIGHTS RESERVED
SERIAL NUMBER
MAINS INPUT
~120VAC/
~220-240VAC
50-60 Hz 130W
SIGNAL INPUTS BAL /UNBAL
XLR
PHONE
RCA
A
