Signal Outputs; Sub/Hpf Bypass Footswitch Jack; Auto Power Switch; Polarity Switch - Mackie MR S10 Owner's Manual

5. Signal Outputs

Connect these output jacks to the input jacks
of studio monitors. Balanced XLR and 1/4" female
connectors are provided for the left and right outputs.
The frequency range depends on where the crossover
level is set.
These output jacks are wired the same as the input
jacks as seen on the previous page.
6. Sub Bypass Footswitch Jack
This unbalanced 1/4" TRS connector is where
to connect the included footswitch. This allows
you to easily enable or disable the subwoofer at
will.
When the footswitch is disengaged [default],
the subwoofer is on with the studio monitors during
playback. When engaged, however, the subwoofer
"turns off", so playback only occurs through the studio
monitors.
The front panel LED will pulse when the footswitch is
engaged, indicating that the subwoofer is off. That said,
we're quite confident that you will know if the subwoofer
is on or off!
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7. Auto Power Switch

This switch sets the amplifiers to automatic [on/off]
mode or leaves them on full-time. Use this switch to set
the MRS10 to your preferred mode of operation.
• When this switch is in the ON position, the amplifiers
turn on and off depending on the prescence or absence
of an input signal. An input signal of at least –55 dBu
activates the auto-on function. A silent period greater
than 13 minutes activates the auto-off function.
• In the OFF position, though, the power amplifiers (and
thus the monitors) remain powered ON at all times,
even if no signal is present.
NOTE: If your MRS10 is powered on, but the front panel
LED is not illuminated, you could (1) position this
switch to the left [OFF] and the LED will illuminate
or (2) position this switch to the right [ON], add signal
and then the LED will illuminate. One other thing to
check is the position of the Sub Bypass footswitch. If en-
gaged, the LED will slowly pulse – i.e. "breathe" – green.
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MRS10
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8. Polarity Switch

This switch – when left – sends a normal (0˚)
polarity of the signal into the subwoofer amplifier.
It has no effect on the signal at the outputs.
This switch – when right – reverses the polarity of
the signal going into the subwoofer amplifier by 180˚.
It has no effect on the signal at the outputs.
There is no right or wrong setting for this switch.
Listen to the overall blend of the subwoofer with the
rest of the system and select the switch position that
gives you the best sound for your audience. In fact,
your system may vary when positioned differently and
in alternate venues. Don't be afraid to experiment with
the position of the polarity switch. See page 10 for more
information.

9. Crossover Level

The MRS10 crossover allows you to choose
a crossover frequency for studio monitors ranging
from 40 Hz to 180 Hz.
Refer to the frequency ranges listed in the monitors
owner's manual as a starting point for setting the
crossover level, then adjust from there to what sounds
best to your ears.

10. Input Level

MRS10 studio subwoofers expect a line-level
signal at its input. Use this control to adjust
the sensitivity of the input section (from –30 dB
to +6 dB) according to the signal strength at its input.
• Balance the subwoofer to your desired low-frequency
output level and adjust the crossover to your
desired setting.

11. Custom-Tuned Rear Shelf Port

Located above all of the power components, input /
output jacks, switches and knobs is an oval-ish-shaped
port. This custom-tuned rear shelf port uses the radia-
tion from the rear of the woofer cone to extend the low-
frequency response of the speaker. The size of the port
is carefully designed with respect to the volume of the
cabinet and the characteristics of the woofer to produce
low-frequency extension.