Direct Out; High-Pass Out; Lcd Display; Speaker Control Knob - Mackie DRM18S Owner's Manual

DRM18S Subwoofer: Rear Panel Features continued...
To connect unbalanced lines to these inputs,
use a 1/4" mono (TS) phone plug, wired as follows:
1/4" TS Unbalanced Mono Wiring:
Sleeve = Shield
Tip = Hot (+)
NEVER connect the output of an amplifier
directly to a DRM's input jack. This could
damage the input circuitry!

4. Direct Out

This is a male XLR-type connector that produces
exactly the same signal that is connected to the input
jack located above it. Use it to daisy-chain several DRM
subwoofers together off the same signal source(s).
They are wired as follows, according to standards
specified by the AES (Audio Engineering Society):
Balanced XLR Output Connector
Pin 1 – Shield (ground)
Pin 2 – Positive (+ or hot)
Pin 3 – Negative (– or cold)
See page 9 to learn more about daisy-chaining
DRM18S subwoofers.
SLEEVE SLEEVE TIP
TIP
TIP
SLEEVE
1
SHIELD
3
2
COLD
HOT
SHIELD
1
3 COLD
2
HOT

5. High-Pass Out

Typically, full-range loudspeakers are connected
to the high pass outputs to "split" the work with
the DRM18S subwoofer. The subwoofer handles all
of the low frequencies and the loudspeakers handle
the rest. As a result, it is more efficient and a bit louder.
Balanced XLR male connectors are provided
for the line-level Ch. 1 and 2 high pass outputs.
The subwoofer's crossover splits the input signals
into two frequency bands. The low frequency range
below 90 Hz goes to the internal amplifier that powers
the subwoofer. The frequency range above 90 Hz
is sent to these line-level output jacks.
The level control and polarity setting have no effect
on the high pass outputs. The outputs are separate
and maintain the stereo separation of the input signals.
It is wired the same as the direct outputs as seen
to the left.

6. LCD Display

This modern, high-resolution, all-color TFT LCD
Display is one of the most vital features of the DRM18S
subwoofer. It displays subwoofer information including
(but not limited to) levels, subwoofer mode, crossover,
cardioid mode, delay setting, lock / unlock status and
other parameters.
The brightness is controllable, but
an overall screen brightness is required
for certain aspects of the set-up options.
SPEAKER CONTROL
1 2
Subwoofer Mode :
Non-Inverted
Crossover :
7
DRM Top
Cardioid Mode :
Front-Facing
Delay :
33 ms

7. Speaker Control Knob

This push-button rotary encoder allows you to access
functions such as master level control and metering,
polarity / inversion setting, crossover, setup functions,
product information and much more!
+3
6
PUSH FOR SETTINGS
Owner's Manual
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