Proficient’s IWS105 Inwall Subwoofer is designed to maximize the
listening experience in a home theater or distributed audio system.
Reading this manual will help you understand the importance of
placement and crossover calibration, that the optimal balance of
volume, frequency response and dispersion can be achieved.
Placing the IWS105 within 3 feet of a corner in the room will result
in increased bass output at frequencies that may be desirable
for home theater use. Placement beyond that point will result in
smoother, more even bass performance, which is more suitable for
music. Ultimately, the best placement of the IWS105 subwoofer is
one that allows it to produce a neutral, uncolored sound.
The IWS105 has 250 watt power handling, with a frequency
response of 36Hz to 150Hz. We recommend using the IWS105
with the Proficient M3 180 watt high-current mono amp with
built-in crossover network.
It’s important that a quality amplifier-crossover combination be
used for precise detail and a smooth transition from the low fre-
quencies of the other speakers down into the sub-bass range. As
a Proficient installer, you’ll be able to preset the crossover for just
the right pass point.
When using the IWS105 with an A/V receiver with an LFE output
that connects to the M3 or equivalent amplifier, follow the receiver
manufacturer’s instructions for crossover adjustment. The size
of the woofers in the system’s front left and right speakers will
dictate the choice of the best crossover point in the receiver. The
larger the woofers, the lower the adjustment. When making the
adjustment, it’s best to listen either to music you’re familiar with
or the test tones from the receiver. However, in some receivers the
selection of certain surround modes automatically switches the
crossover to a default point.
INSTALLATION CONSIDERATIONS
2
Installation of the IWS105 into New Construction applications requires the use of Proficient’s BB-IWS10 MDF Back Box. Please refer to
the instructions included with the BB-IWS10 for further details.
INSTALLATION – NEW CONSTRUCTION / UNFINISHED WALLS
Please refer to Diagram 1 for a quick installation overview, which will be described below:
1. CUTTING THE DRYWALL
Find the studs in the wall using a good stud finder. Locate the exact center between the studs by drilling a small hole as close to center
as can be determined. Using a stiff wire (a coat hanger works well) bent to 90˚ feel for both studs through the hole. By turning the wire
around you should be able to determine the middle location between the studs.
Once the center has been determined, use the cut-out template supplied with the IWS105 to mark and cut out the hole in the drywall.
If the area in the wall is not already insulated, add an adequate amount of insulation material to loosely cover the back of the sub. If
the insulation material used is faced with foil or paper, position the foil or paper away from the subwoofer.
CAUTION: Speaker components can get hot while playing music at moderate to high volume levels. There
should be nothing at all touching the speaker. Material in proximity to the back of the speaker must have at a
minimum 1" or 26mm clearance for non-flammable materials and more for flammable materials like plastic
vapor barriers.
INSTALLATION – FINISHED WALLS
STEP 1:
Cut opening in drywall
per template provided
STEP 2:
Connect speaker
wire to IWS105
STEP 3:
Position IWS105 into drywall
cut out and tighten screws
Diagram 1
2. WIRING
Connect the speaker wire to the IWS105, be sure to connect the positive wire to the terminal marked (+) and the negative wire to
the terminal marked (–). Note:
Make sure the binding posts (wire connectors) are tightened firmly or they may rattle.
The other end of the
wire should be connected in the same manner to your amplifier’s inputs marked “SUBWOOFER OUT”. Make sure that the amplifier is
unplugged when connecting any wires or cables to it.
