MICROMIX
MICROMIX
BUILT IIN 9
9 B
BAND G
GRAPHIC E
EQUALIZER
General
This, like any graphic equalizer, represents a set of limited-range (+/-12dB) gain controls. In
this case there are nine sliders, each one operating over a one-octave portion of the overall
band of sound frequencies. Please note that equalizers can have an effect on the gain of the
main system as well as its frequency response. Once adjusted, you may need to turn down the
MAIN MASTER level if the CLIP LED beside it becomes very active.
There Are 3 Main Functions for the Graphic EQ
i. To adjust the system for feedback reduction, the nor-
mal technique is to turn the main system up to the
point of feedback and move the
EQ
sliders, one at a
time, to determine which frequency band is causing
the feedback. (Remember to push them back up to
center position if they don’t stop the feedback).
When isolated, the offending band is then pushed
down about
3
to
6 dB
. Usually only 2 or 3 bands
can be reduced before the feedback elimination
process begins to affect the sound quality.
ii. To adjust for deficiencies in the speaker system’s bass response, the most common adjust-
ment is to
boost
the
63 Hz
about
6 dB
and the
100 Hz
about
3 dB
. However, use of the
graphic
EQ
to extend the deep bass frequency response of a speaker cabinet
does
use up a
lot of the available system power, so this technique should be used with
caution
to avoid
distortion and possible speaker damage. On the other hand, in applications where it is
appropriate to sacrifice deep bass for higher overall sound output, the
63 Hz
slider should be
taken
down 6 dB
below centre. You may now increase the
MAIN
level for added volume.
iii. The third use of the graphic equalizer is to adjust the sound character for artistic reasons.
Each frequency is adjusted until the sound is what the musicians feel sounds best. The best
sound system operators, however, usually strive to use a minimum of equalization for this
purpose, or for
boosting
the bass. Instead, they use very minimal sound-shaping adjust-
ments to ensure that the threat of feedback and distortion will also be minimal.
MP10DS R
REAR P
PANEL
1. A
A &
& B
B S
SPEAKER O
OUTPUTS &
& H
HEATSINKS
Each of the
MP10DS
, dual power amplifiers has two 1/4” jacks for speaker connections. You
may connect one
8-
Ohm speaker cabinet to
each
jack. Connecting two
8-
Ohm speakers (i.e. a
4
-ohm load), to either
AMP A
or
AMP B
, will
not
harm the
MP10DS
, but the output power will
be
thermally limited
. If the amp overheats, perhaps into a 2 Ohm load, the built-in thermal pro-
tection will cycle the amplifier on and off until it cools down, usually in a few minutes.
Do not obstruct the flow of air around the heatsink fins on the rear of the MP10DS as
this too may cause the power amplifier to overheat and shut off. After the MP10DS
cools down, operation will be restored automatically. This should never happen if ade-
quate ventilation is provided at the back of the unit.
2. A
AC P
POWER S
SWITCH &
& F
FUSE
The power switch and fuse are located on the back panel. If you must replace
the fuse,
always
replace it with the same type - a
6A slo-blo
(
T3A slo-blo
in
220-240V
export models).
Do Not
replace the fuse with the wrong type or
wrap foil around the old one, as this may cause
serious damage
. If
replaced fuses keep blowing, take the unit to your
Yorkville
dealer for service.
6
PHANTOM
POWER
PARALLEL OUTPUTS
MIN LOAD 4 OHM
MIN LOAD 4 OHM
B
A
PARALLEL OUTPUTS
160 WATTS INTO
8 OHM LOAD*
160 WATTS INTO
8 OHM LOAD*
ON
OFF
POWER
ON
OFF
6A
SLO BLO
FUSE
FUSE
FUSE T3A
MANUFACTURED BY:
YORKVILLE SOUND • TORONTO, CANADA
CAUTION AVIS
RISK OF ELECTRIC SHOCK
DO NOT OPEN • RISQUE DE CHOC
ELECTRIQUE NE PAS OUVRIR
*
USER NOTE: This unit is designed to produce it's
maximum power in to 8-Ohm load. Use of loads less
than 8-Ohms will produce less than the maximum rated
power output. See Owner's Manual for details.
120 VAC
60Hz
260 VA
Average
230V
50Hz
260 VA
Average
S
S
