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Drill a hole on the cabinet to feed the speaker wire into.  We suggest on either side of the subwoofer hole.
Carefully push the wire through the hole into the cabinet.  Chalk the hole with some kind of Silicone.  Make
sure to use a generous amount to ensure no air will escape.  

Make sure to secure the speaker cable to the inside of the MDF cabinet to prevent any rattle from vibration.  

When the drywall or wall board is installed in front and in back of the enclosure, we HIGHLY recommend that
it is glued to the MDF cabinet.  It should also be screwed to the front and back of the enclosure.

PLEASE NOTE AGAIN:  While installing this model you MUST make sure that EVERYTHING is
secured to prevent rattling or unwanted noise.  This model is very powerful and produces a
LOT of bass.  It will rattle anything and everything that is not secured or installed properly!

Once the drywall or wall board is completed, you are ready to cut the hole for the installation of the actual
subwoofer.  This can be done before or after paint.  

Use the supplied speaker cutout to get the recommended hole dimensions.  Position the cutout so it sits on top of
the hole in the MDF cabinet and then outline the speaker opening.  Proceed and cut out the outlined hole.
Once the hole is cut out, remove the drywall and clean out any debris that might be in the MDF cabinet.
REMEMBER to secure the speaker wire before installing the subwoofer into the cut out.

Caution, before installation of the subwoofer

Please read the following instructions:  

• Always turn off the power of your amplifier/receiver.  
• When turning your amplifier/receiver back on, make sure your volume is turned all the way down.  

Installing the Subwoofer

Remove the grill from the speaker frame.  If needed, carefully push one or two of the dog ear (mounting legs)
mounting screw to get the grill off.   Attach the speaker wire.  Caution:  Make sure to observe polarity (po
to po and negative – to negative -).  

When connecting the speaker wire to the amplifier, make sure to observe polarity (+, -).  

Now, turn all the dog ears in toward the speaker.  This will allow the speaker to easily fit into the cut hole.  Insert
the speaker into the hole making sure to keep the speaker is level.  Carefully tighten the mounting screws evenly
to secure the speaker.  

As you tighten the screws, the dog ear mounting feet will flip into position to grip into the drywall.  DO NOT
over tighten the mounting screws.  Once again, check to make sure the speaker is level.  Push on the grill into the
grooves in the speaker frame.

Controls

Your subwoofer provides of adjustments to optimize its performance in any listening room with any combination
of speaker systems.  

Front panel

Frequency knob:

This adjusts the bass response to match your main speakers. 

Phase switch:

Selects the polarity for the subwoofer.  The distinction of phase will be most noticed on low

frequency percussion instruments or music with a continuous bass line.  If in doubt, leave in the 0 deg position.

Painting the Speaker

If you are going to paint your speakers, we suggest painting them prior to the installation.  If you must paint
them while they are still in the wall, remove the grill and replace it with the provided paint guards.  Then you
may proceed and paint the frame of the speakers.  When painting the grills, paint them lightly and be careful not
to clog the holes.  Do not paint the grill while it’s still on the speaker, paint them separately.

Summary of Contents for Sub-88A

Page 1: ...le recommendation When choosing the wire gauge take in consideration of the output power of the amp for this in wall sub it should be at least 200 watts and the length of the cable between the amplifier and the subwoofer The longer the wire run the heavy wire gauge needed We strongly recommend that you use a high quality speaker wire between the amplifier and the subwoofer For this model use at le...

Page 2: ...plished when the subwoofer is located in the wall close to a corner This will create good reflective bass waves into the room It can however also create a boomy sound that can be too much bass This can be somewhat adjusted with the subwoofer frequency control and the level control on the amplifier Make sure to consider all this before deciding on the final location Some mounting location suggestio...

Page 3: ...on make sure your volume is turned all the way down Installing the Subwoofer Remove the grill from the speaker frame If needed carefully push one or two of the dog ear mounting legs mounting screw to get the grill off Attach the speaker wire Caution Make sure to observe polarity positive to positive and negative to negative When connecting the speaker wire to the amplifier make sure to observe pol...

Page 4: ...a TRUAUDIO Speaker Systems P R O D U C T W A R R A N T Y All in wall in ceiling outdoor speakers volume controls and freestanding loudspeakers have a lifetime limited warranty This warranty includes lifetime parts and repair labor on all components Powered subwoofers and active electronics have a one 1 year limited warranty This warranty includes one 1 year parts and repair labor on all components...

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