Motion Sound SW-15 - Manual (Page 3)

3
-XLR Input:
Standard balanced input wiring with a phase switch and volume control.
Pin 1-ground Pin 2-hot Pin 3=neutral
-EQ-
The SW-15 has three EQ adjustments to help tame resonance and “dips” in smaller rooms. These
can also be used to set your preferred “bass response” sound.
-High Cut-
This variable 12Db/oct filter removes highs from the SW-15 at the point of
adjustment. In most cases 150 Hz is a good place to start. It may be desirable
to raise this point up to 300 Hz if your total sound benefits by taking the bass
“load” from your amplifier or PA. If a room is “boomy” you may want to lower
the high cut to 100 Hz.
-60 Hz-
Many typical clubroom walls and ceiling heights have resonance around 60 Hz
this can help tame a “boomy” room. Be sure to have someone listen at an
important location while adjusting this control.
-45 Hz-
This is the low area of the SW-15’s response and coincides with bass guitar,
organ pedals, kick drums and other deep bass instruments. You can eat up a
lot of power very quickly at 45 Hz so listen carefully, use boost in moderation.
-PHASE SWITCHES-
Phase switches operate relative to the equipment to which the SW-15 is connected.
Not all amplifiers have a + input = a + output phase relationship. The phase switches on the SW-
15 will allow you to independently match the phase of two different inputs. The SW-15 is “in
phase” when the loudest bass is produced. Play a few bass notes while changing the phase switch
to find the loudest (in phase) position. It is advisable to have someone listen at a distance when
doing this test.
-DIRECT KEYBOARD OUT-
In some cases you may want to connect the SW-15 directly to an output on your keyboard. This
allows separate volume control of a keyboard amplifier and the SW-15.
This can be useful on Motion Sound KBR-3D and KBR-M amplifiers to eliminate any
modulation of the bass signal by the internal low rotor simulator.