The DSW PRO 440wi
uses an 8" Dynamic Balance composite polypropylene cone driver for deep, accurate
response with low
distortion. For a smoother response and improved durability, the woofer utilizes
a rubber surround.
Klippel Optimized Woofer: By
using a state-of-the-art Klippel Distortion Analyzer, Polk Audio is able to optimize
the woofer's motor structure, voice coil alignment and suspension for the best
possible performance even at extreme listening levels.
Class D Amplifier: The subwoofer is
powered by a high-current Class D amplifier producing 180 watts RMS power (300 watts Dynamic Power) that supplies clean power for loud bass and a wide dynamic range necessary
to recreate a life-like experience in your home. The efficiency of a Class D digital amplifier
translates into high-power, and cool, reliable operation with low distortion.
Feed Forward Distortion Suppression
Technology: This technology maximizes
acoustic output as it reduces audible distortion. Feed Forward is a zero latency
system that maximizes dynamic output of the subwoofer system without relying on
slow responding feedback techniques. What you'll hear is quick, precise bass
output with minimal audible distortion, even at loud volume levels.
The DSW PRO 440wi features a
bass-reflex enclosure with non-resonant MDF construction and internal bracing
for deep bass impact with superior detail and accuracy. The subwoofer's
enclosure's durable onyx black finish can be painted to match your room decor,
Downward Radiating Slot Port: The DSW PRO 440wi features a downward radiating slot
port which lessens turbulence, noise and distortion. The result is deep, clean
and accurate bass.
Video Shielded: The DSW PRO 440wi
is magnetically shielded for placement near video monitors. You should still
allow at least 18" of space between your subwoofer and any tube television. LCD, DLP and Plasma TVs are not affected by magnetism.
Response: The overall frequency response for the subwoofer is
25-160Hz, and the -3 dB frequency response is 30-125Hz.
The DSW PRO 440wi features repositionable rubber or
spike feet which allow you to orient the subwoofer on its "back" to turn it into
a front-firing woofer when you want to hide the subwoofer away in cabinets.
There is an optional woofer grille (item #
107DSW400G, sold separately)
available when the subwoofer is used in a front firing application.
Note: The remote control may not
operate when the subwoofer is placed in a cabinet with the driver facing into
the room. If this occurs, adding an IR repeater will enable the remote
control to communicate with the subwoofer.
IR Wireless Remote Control: The
DSW PRO 440wi comes supplied with a credit card sized IR wireless remote control
which operates the following subwoofer controls - Volume, Mute, Phase, Night
and Polk Room Optimizer. All commands are sent to the subwoofer via IR control.
The IR receiver is located on the front of the subwoofer when the subwoofer is
its downward firing configuration. There is a blue LED behind the woofer's logo
badge which blinks to confirm the subwoofer has received and responded to the
remote's instructions. The LED feature can be turned off.
Note: The subwoofers
crossover setting must be set using the controls located on the rear panel
of the woofer.
Polk Room Optimizer:
The DSW PRO 440wi's remote control incorporates the Polk
Room Optimizer (PRO) feature. The Polk Room Optimizer feature allows you to
place the subwoofer where you want it in your listening room. Based upon the
four most common room placements for subwoofers, the Polk Room Optimizer
maximizes sound quality for you, smoothing out the bass response that a
particular room placement creates. There are four push-button room equalization
presets on the remote that correct for room boundary effects for typical room
placements: "cabinet," "corner," "mid-wall," and "mid-room." The result
is great bass performance no matter where you place your DSW PRO 440wi subwoofer.
Night Mode: Night Mode compresses the
dynamic range of the woofer's output, so you hear low-level bass detail at lower
Control: The DSW PRO 440wi
has a push button volume control to adjust the volume of the subwoofer relative to the
other speakers in the system. The volume is adjustable from 0 to 40. The blue
LED on the front panel will indicate the volume level using a combination of
short and long blinks. The volume can also be adjusted using the supplied
The subwoofer's IR
wireless remote features a phase control which allows you to select 0-degrees (normal),
90-degrees, 180-degrees (reverse) or 270-degrees. This control enables the
subwoofer to blend more seamlessly with your main speakers. If the bass sounds muddy or
unclear, using the phase control can sometimes strengthen the bass "attack."
Filter: The DSW PRO 440wi offers a continuously variable low-pass
filter, adjustable from 60-160 Hz. The cut-off frequency must be manually set
from the subwoofer's control panel.
3-Way Power Switch:
The subwoofer has a 3-way power switch on the rear panel.
You can select "Auto", which turns the unit on automatically when an input
signal is received and off 15 minutes after the signal stops; "On", which
keeps the unit on and "Standby", which turns the unit
off. The LED power
indicator glows green when the unit is on, red when the unit is off and yellow
during standby mode.
Connections LFE (Unfiltered)
The DSW PRO 440wi
has a gold-plated mono RCA LFE (Low Frequency Effects) input. This input should
be used when connecting to a receiver with a filtered subwoofer output, such as
those found on most home theater receivers (check the receiver's owner's
manual). The LFE input bypasses the subwoofer's built-in low pass crossover.
receiver's subwoofer output is unfiltered, you should use either the
left or right Line Input of the subwoofer.
(Filtered) Inputs/Outputs: The subwoofer has
gold plated left and right RCA Line Level inputs.
The inputs are for use with electronics featuring unfiltered "Pre Out" jacks
(Example: a separate pre-amp processor with a separate amplifier). It may
require "Y adapters" to connect the left and right outputs of the pre-amp
processor to both the subwoofer and the power amplifier. The line outputs allow
you to send a filtered signal to a power amplifier to drive bookshelf speakers.
Speaker Level Input/Output:
The subwoofer has 5-way binding post connections for front
speaker level input and output. The subwoofer's low-pass filter takes the low
frequencies (based on the setting of the filter) and sends it to the subwoofer.
The speaker level outputs send a filtered signal to your connected speakers.