TIPS TO GET THE MOST OUT OF YOUR XL WOOFER
Your PowerBass Xtreme subwoofer has been meticulous engineered and designed to handle high power
musical reproduction. Despite their rugged construction, it is possible to damage your speaker if they are
improperly used. In general, you will hear distortion as a so-called warning before any damage occurs.
If you hear distortion in your system, immediately reduce the musical level to the point where the sound
retains its clarity.
1. All PowerBass Xtreme subwoofers require an initial break-in period before it will reach optimum
performance. Like any new precision machinery, allow a minimum of several days to one week with
normal daily usage to ensure that the suspension has properly been broken-in.
2. Never use only one coil on a dual voice coil subwoofer. Doing so will significantly decrease the efficiency
and power handling of the speaker.
3. Be sure you supply the speakers with enough unclipped amplifier power to drive them properly.
(More damage can be done to a speaker by under-powering and clipping your amplifier than any
other way!)
4. Where possible, run your Speakers in mono instead of stereo. Most bass is reproduced in mono so
there is less chance of any cancellation if played in mono.
5. Where possible, wire your Speakers in parallel instead of series. Bass is reproduced either way but
again there is less chance of cancellation in parallel. NOTE: Be sure the amplifier you are using is
stable to the resulting impedance of the speaker load!
6. Where possible, a separate amplifier just for your subwoofers should be used with an electronic
crossover to set the frequency range.
7. Do not block the front of your speakers or ports. You want as much direct air coupling as possible.
Also be sure to round off the inside edges of the port to reduce any port noise.
8. For ported enclosures, keep in mind that you must leave at least twice the port diameter size between the
subwoofer and the port itself. Leave at least one time the port diameter between the port and any walls
of the enclosure.
9. Remember the Golden Rule “Measure twice…cut once.”
Note: The XL woofer basket is constructed of composite materials. Please use the enclosed
paper template if you are pre-drilling speaker mounting pilot holes-do not use the woofer as
a template.
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