Low Freq Filter; High Freq Filter - Mackie HR624 MK2 Owner's Manual

4. LOW FREQ FILTER

– 10dB QUARTER WHOLE (NORMAL)
A C
NORMAL
B
HALF
ACOUSTIC
SPACE
The LOW FREQ FILTER switch inserts a
low-frequency rolloff into the response curve.
• For some applications, the low-frequency output of
the HR624 MK2 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 destination of your mix,
or perhaps just to see how your mix sounds on a clock
radio.
–
80Hz 49Hz 2dB 0
LOW CUT (NORMAL) (NORMAL)
LOW HIGH
FREQ FILTER FREQ FILTER
THX = 80Hz
– 10dB QUARTER
A
OFF NORMAL
INPUT
SENSITIVITY
QUARTER SPACE
CONSOLE
SPEAKERS IN CORNERS
A
LOW CUT
0
dB
–
3
dB
49Hz 80Hz
LOW FREQ
RISK OF ELECTRIC SHOCK
DO NOT OPEN
– 10dB QUARTER
A
OFF NORMAL
B
HALF
INPUT ACOUSTIC
SENSITIVITY SPACE
SIGNAL INPUTS BAL/UNBAL
PHONE
Removing the low-frequency content also allows
you to raise the overall output level somewhat. Low-
frequency information requires the largest amount of
an amplifier's output, so restricting the low-frequency
content allows raising the mid-frequency level
+
2dB STANDBY
ON
somewhat. If your client insists on mixing LOUD, this
AUTO
ON
may be a workable strategy.
POWER
MODE

5. HIGH FREQ FILTER

WHOLE (NORMAL)
C
80Hz
B
LOW CUT
HALF
ACOUSTIC LOW
SPACE FREQ FILTER
The HIGH FREQ FILTER switch tailors the overall
high-frequency response by ±2 dB beginning at 10kHz.
Leave this switch in the 0 (NORMAL) position unless:
• You want to subtly brighten or darken the sound of the
HALF SPACE
speakers.
CONSOLE
• Perhaps you have hearing loss caused by too many
nights in front of a double Marshall stack.
SPEAKERS AWAY
SPEAKERS AGAINST WALL
FROM WALLS
• You just like to mix on the bright side or dull side.
B
If your mixes consistently sound dull or dark when
ACOUSTIC SPACE APPLICATIONS
you listen elsewhere, this usually indicates that your
monitors are too bright, relative to your normal hearing.
0
dB
2
dB
+
–
2
dB
0
dB
– A bit less high-frequency energy usually fixes this, and
4
dB
–
2
dB
you can force the mix in this direction by reducing the
20 100Hz
ACOUSTIC SPACE high-frequency output of the monitors by using the –2 dB HIGH FREQ
position of the switch.
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.
AVIS:
RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR
WHOLE (NORMAL)
C
– +
80Hz 49Hz 2dB 0 2dB STANDBY
LOW CUT (NORMAL) (NORMAL)
LOW
HIGH
FREQ FILTER FREQ FILTER
XLR RCA
– +
49Hz 2dB 0 2dB STANDBY
(NORMAL) (NORMAL)
HIGH
FREQ FILTER
THX = 0 dB
WHOLE SPACE
CONSOLE
C
10kHz
ON
AUTO
ON
POWER
MODE
MAINS INPUT
Owner's Manual
ON
AUTO
ON
POWER
MODE
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