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AIRMOTIV SUBWOOFERS
Subwoofer Placement and Configuration
The best location for your subwoofer will depend on a lot of things - including the acoustics of
your room, the characteristics of your main speakers, and practical considerations like where you
have room for it. (Whole books have been written about the subject - and even experts often
disagree.) The important thing is to find a location that delivers the sound you want, and fits with
your room decor.
Some frequently chosen locations include: in the front between your main front speakers,
in a front or rear corner, or in the center of a side wall or rear wall. Each has advantages and
disadvantages, and each may or may not work well in your particular system.
One way of choosing a good location is sometimes humorously referred to as the "subwoofer
crawl". To use this method, you connect your subwoofer temporarily to your audio system, place
the sub in your normal listening position, where you would normally sit, and play music through
it with plenty of bass. You then crawl around on the floor, stopping and listening at each location
where you're considering putting your sub. Once you find the spot where the bass sounds the
best and cleanest, you switch places with the subwoofer, placing it in the location where the bass
sounded the best. This often turns out to be a good location for your sub.
How you configure your Airmotiv subwoofer will depend on the type of system you have.
Note: Your Airmotiv subwoofer contains a powerful Class A/B amplifier. The heat sinks for this
amplifier are attached to the back of the Airmotiv sub, in the center of the amp plate.
IT IS NORMAL FOR THE HEAT SINKS TO GET QUITE WARM when your Airmotiv subwoofer is
played loudly for extended periods of time.
WARNING: YOU MUST ALLOW SEVERAL INCHES OF CLEARANCE BETWEEN THE REAR PLATE
OF YOUR AIRMOTIV SUBWOOFER AND THE NEAREST WALL OR OTHER SURFACE TO ALLOW
AIR FLOW AROUND THE HEAT SINK FINS TO ENSURE ADEQUATE COOLING! DO NOT PUSH THE
REAR PANEL OF YOUR AIRMOTIV SUB TIGHT AGAINST A WALL! DO NOT PUSH THE REAR OF
THE UNIT AGAINST DRAPES OR SOFT FURNITURE THAT WILL BLOCK AIR FLOW TO THE REAR
HEAT SINK FINS! (Your Airmotiv sub includes internal safety protection against overheating,
but operating it for excessive periods of time without adequate cooling will impair proper
operation and shorten component life.)
Configuring your Airmotiv Sub to Work with an AVR or Surround Sound Pre/Pro
Setting your Airmotiv sub to work with an AVR or pre/pro that has its own bass management is
quite simple (this will work for most systems that have a subwoofer output).
- Connect the subwoofer or LFE output on your pre/pro or receiver to the one of the inputs on
your Airmotiv sub.
- Set the Crossover Control on the Airmotiv sub fully clockwise (to 150 Hz).
- Set the Volume Control on the Airmotiv sub to a setting where the level of the low bass seems
about right by ear.
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