Srm1850 Subwoofer: Rear Panel Features; Power Connection; Power Switch; Xlr Inputs - Mackie SRM1850 Owner's Manual

SRM1850 Subwoofer: Rear Panel Features

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SRM 5
550
SRM
650
VAR
4
3 6
2
1
POWER CONSUMPTION 200W

1. Power Connection

This is a standard 3-prong IEC power connector.
Connect the detachable power cord (included in
the packaging with the subwoofer) to the power
receptacle, and plug the other end of the power
cord into an AC outlet.
Make sure that the AC power is matched to
the AC power indicated on the rear panel
(below the IEC receptacle).
Disconnecting the plug's ground pin is
dangerous. Don't do it!
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8
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11

2. Power Switch

Press the top of this rocker switch inwards to turn on
the subwoofer. The front panel Running Man logo will
glow with happiness...or at least it will if the subwoofer
is plugged into a suitable live AC mains supply and the
main logo switch [10] is disengaged.
Press the bottom of this rocker switch inwards to turn
off the subwoofer.
As a general guide, the mixer (or other signal
source) should be turned on first, SRM1850
subwoofers next, and loudspeakers last.
As such, the loudspeakers should also be turned off first,
followed by the subwoofers, then the mixer. This will
reduce the possibility of any turn-on or turn-off thumps
and other noises generated by any upstream equipment
from coming out of the speakers.

3. XLR Inputs

Balanced XLR female connectors are provided for the
left and right inputs. Connect the full-range line-level
signal from the mixer (or other signal source) to these
input jacks.
If you are connecting a single subwoofer output, or
LFE (low-frequency effects) output to the subwoofer,
you may use either the A or B input connector.
NEVER connect the output of an amplifier
directly to the input of the subwoofer.
This could damage the input circuitry of the
active subwoofer.
They are wired as follows, according to standards
specified by the AES (Audio Engineering Society):
Balanced XLR Input Connector
Pin 1 – Shield (ground)
Pin 2 – Positive (+ or hot)
Pin 3 – Negative (– or cold)
Balanced XLR Input Connector
For more information on these connectors, see
Appendix B on page 16.
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SHIELD
HOT
3 1
COLD
SHIELD
1
3 COLD
2
HOT
Owner's Manual
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