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Method C. Connecting to controllers with PRE-OUTs.
This method is for stereo systems with low level pre-outs.
Wireless Connection
Connect the low level pre-outs to the two inputs on the wireless transmitter. Set the wireless channel on the transmitter so that it is the
same as that on the subwoofer. Set the wired/wireless switch on the subwoofer to ‘Wireless’. Place the transmitter as high as practical,
and away from metal surfaces if possible.
Wired Connection
Connect the low level pre-outs to the two RCA low level inputs on the subwoofer. If your controller has balanced outputs, connect to
the two XLR balanced inputs on the subwoofer.
This approach will also be in augmentation mode unless you purchase our high pass filter to keep bass from your main speakers (unbalanced
systems only). Refer to the high pass filter instructions on how to do that.
Step 4: Volume Level
To start, set the volume level on the subwoofer at around 11 o’clock. Setting the volume
level much higher than that will make the auto-on function not work properly. Auto-on
level sensing is before the volume control. Hence setting the volume level too high on the
subwoofer will lead to very low input levels for the auto- on circuit, and will make it hard-
er for the sub to turn on.
To set the subwoofer level subjectively, set the subwoofer to the highest level where it
sounds nice and bass and kick drums still sound tight and non-boomy. For home theater
applications, most people like the bass to be a bit higher than for music. 3 dB higher is a
good choice, if your receiver allows you to set levels for each source.
Step 5: Crossover
If your controller has bass management and has a steep crossover slope, set the crossover switch on the subwoofer to ‘Out’. If your controller
has a gentle crossover slope ( 12 dB/Oct or less), set the crossover switch on the subwoofer to ‘In’, and set the crossover frequency knob
on the subwoofer to the same frequency that was selected on your controller.
For bass augmentation mode (method B or C), set the crossover switch on the subwoofer to ‘In’ and crossover frequency knob set to
where your main speakers start to fade out. Adjust the level for best blend.
Step 6: Fine Tuning
ULF Trim
When the room is small, you get room gain effect that boosts deep bass. In a small space like a car, bass below 80 Hz would start to rise.
We have added a ULF Trim control on the subwoofer in order toto compensate for this room gain effect. For very large rooms or very
open floor plans, set the trim control to 16 Hz. For very small rooms that are enclosed, set the trim control to 50 Hz, or somewhere in-
between for moderately sized rooms.
Setting the Phase
Depending on the absolute phase of your main speakers and amplifier, and the distances of the subwoofer and main speakers from the
listening position, the bass in the crossover region may be smoother if you reverse the phase of the subwoofer. The phase switch position
that give a fuller bass in the crossover range is the correct one.
If your controller allows you to set the distance of the subwoofer and main speakers, set these correctly first. This will also time align
the subwoofer to give you the most seamless and tight bass.