SRM1850 • SRM2850 P
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SRM1850 • SRM2850 Powered Subwoofers
SRM Subwoofer: Rear Panel Features continued...
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 7 to learn more about daisy-chaining SRM
loudspeakers.
For more information on these connectors, see
Appendix B on page 14.
8. Stereo/Mono Switch [Full Range]
This switch allows you to choose whether the
A and B inputs are sent out separately [switch out] or
as a mono sum of both inputs [switch in].
For example, if a mixer’s L/R outputs are connected
to the A and B inputs of an SRM subwoofer and the full
range outputs are connected to strategically placed
SRM loudspeakers, engage the switch so the signal is
mono-summed. Otherwise, you’ll get just the left or
right signal from the mixer’s output sent from the A
and B full range outputs to the SRM loudspeakers.
9. High Pass Mode
The high pass mode allows you to choose from a list
of presets for SRM loudspeakers, as noted below.
This optimizes the subwoofer and loudspeakers
connected to the SRM high pass outputs. If not using
SRM loudspeakers, a variable mode allows you to select
the best high pass mode suited for your PA system from
60 Hz to 120 Hz.
2
1
SHIELD
COLD
HOT
3
SHIELD
COLD
HOT
3
2
1
Balanced XLR Output Connector
Frequencies below the crossover frequency are sent
to the subwoofer. Additionally, the SRM loudspeaker
presets apply alignment delay to the subwoofer creating
an optimally aligned 3-way system. Frequencies above
the selected crossover frequency are sent to the high
pass outputs [6]. The high pass mode should be set
to the lowest frequency response rating of the main
loudspeakers. Press the high pass mode button
repeatedly until the desired high pass mode setting
LED illuminates. If “variable” is selected, turn the high
pass mode knob to the frequency you desire.
SRM550
– 115 Hz plus alignment delay
SRM650
– 115 Hz plus alignment delay
SRM750
– 115 Hz plus alignment delay
VAR
– 60 Hz – 120 Hz
10. Main Logo Switch
The Running Man logo on the front of the subwoofer
illuminates when this switch is disengaged and AC
power is available at the mains input [1]. Engage
the switch if you do not want the Running Man logo
to illuminate.
11. Extra Knobs, Buttons and LEDs
What’s cooler than extra bells and whistles on a new
toy? Well, a lot of things, I suppose, but that didn’t stop
us! The rear panel of each SRM subwoofer is stacked
with a variety of extra knobs, buttons and LEDs. We ran
out of time, so we’re not really sure what any of them
does. Go ahead and experiment with each knob and
button. Once you have an idea of what each feature is
used for, be sure to drop us a line to let us know. We can
revise the manual with this newfound knowledge, all
thanks to you!
12. Rock ‘n Roll
Congratulations, you have reached the end of
the features section! At this point, you should have
a pretty good understanding of how the SRM subwoofer
functions. If this is true, the next step is to rock ‘n roll!
If this is not true, head back to page 8 and read
it all over again. The following pages discuss SRM
placement, an in-depth look at polarity and Smart
Protect, technical information and more. Check it out!
SRM
550
SRM
650
VAR
POWER CONSUMPTION 200W
11
SRM
550
SRM
650
VAR
POWER CONSUMPTION 200W
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