System Components: The Polk
Audio RM6750 home theater speaker system is a 5.1-channel speaker system that
gives you an option for adding additional matching satellites for 6.1- or
7.1-channel surround. The system includes four identical satellites, a matching
center channel, and a powered subwoofer.
The satellites and center channel feature a non-resonant mineral-filled
polypropylene enclosure for great looks and natural sound. The integrated baffle
and grille design allows maximum sound dispersion with minimum diffraction for
superior imaging and room-filling sound.
Drivers: The drivers used in
the RM6750 speaker system are as follows:
- Satellite and Center Channel
Midranges: Each satellite features a 3-1/2" polymer composite cone,
which are lightweight and efficient, resulting in clear, distortion-free
midrange. The center channel uses two 3-1/2" drivers.
- Satellite and Center Channel
Tweeters: The center channel and each satellite features a 1/2"
silk/polymer composite semi-dome tweeter for sweet highs and more lifelike
- Subwoofer: The powered
subwoofer uses an 8" polymer composite woofer with a foam surround.
Power Port: Each satellite
features a Power Port Bass Vent on the back of the enclosure to extend and
strengthen the lower-midrange performance for a seamless blend with your
system's subwoofer output. The center channel uses two Power Port Bass Vents.
Mounting Options: The satellite speakers can be mounted in a number of ways:
Speakers: The RM6751 can be
placed on a shelf or table top without a stand due to its flat base (self
adhesive rubber feet are supplied). The satellite can be wall mounted using
an optional wall mount bracket, or the integrated keyhole on the back of the
- Center Speaker: The RM6752
can be placed on a shelf or table top without a stand due to its flat base
(self adhesive rubber feet are supplied). The center channel can be wall
mounted using an optional wall mount bracket, or the integrated keyholes on
the back of the enclosure.
Speaker Terminals: The
satellites and center channel each feature spring clip terminals that will
accept pin connectors and bare wire.
Video Shielded: The RM6750
satellite and center channel speakers are magnetically (or video) shielded for
safe placement near your TV or computer monitor without causing picture
Additional Speakers: If you
wish to use the RM6750 for a 6.1- or 7.1-channel surround sound system, you can
purchase RM6752 (107RM6752) single center channel speakers or RM6751 (107RM6751)
satellite speakers to fill out your speaker requirements.
Materials: The RM6750 subwoofer
is made of durable MDF with a black vinyl finish.
Recommended Hookup: The
subwoofer can be connected several different ways, utilizing the speaker level
inputs and outputs, or the Line input. The subwoofer features spring clip
terminals for the speaker level inputs and outputs, plus a stereo RCA line
input. The recommended hookup methods are as follows:
- Recommended Hookup A: Polk
Audio recommends connecting the amplifier's left and right front channels to
the speaker level inputs of the subwoofer and the front left and right
satellite speakers to the subwoofer's speaker level output. The center and
surround speakers are directly connected to the amplifier. The amplifier's
bass management/speaker setup should be configured with the front left and
right speakers set to "Large" and the Subwoofer set to "Off" or "None".
- Recommended Hookup B: An
alternate hookup method is for the subwoofer and front speakers to be
connected in parallel directly to the amplifier's front outputs. The center
and surround speakers are directly connected to the amplifier. The bass
management setup is the same as Recommended Hookup A.
- Line Input: This stereo
RCA input allows you to connect to an unfiltered subwoofer output on a
receiver. You will need a "Y" adapter to connect a mono subwoofer cable to
the stereo line input.
Phase Switch: Speaker
positioning can sometimes cause subwoofers to work against satellite speakers
instead of with them, creating frequency canceling and a dramatic loss of bass.
When this occurs, you can switch the "phase" of the subwoofer driver from Normal
(0°) to Reverse (180°), to enhance the bass "attack."
Volume: The subwoofer has a
separate volume level, allowing you to adjust the subwoofer relative to the
remainder of the sound system.
Slot-loaded Bass Vent: The
powered subwoofer features a slot-loaded bass vent on the front panel just
beneath the woofer. The slot, 9" x 1", dramatically lessens turbulence, noise
and distortion, enabling the subwoofer to play precise, thunderous bass.
Subwoofer Positioning: The
RM6750 subwoofer is not magnetically shielded and may cause picture interference
if it is placed in close proximity to a TV or computer monitor. For best
performance, the subwoofer should be placed at least six inches away from a