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* About Power Ratings
When making comparisons between product
specifications it helps to understand what they
mean, particularly with amplifier power ratings.
The Federal Trade Commission has recently issued
new regulations regarding the power ratings of all
amplifiers including self-powered speakers. Polk
Audio supports this effort to standardize power
testing methods in order to provide consumers with
a “level playing field” basis for comparison. Make
sure the basis for the power rating is clearly stated
before comparing it to another product’s specification.
The FTC rating is based on the continuous power output of the amplifier. However, music and movies are not
continuous but are mainly composed of short bursts of sound. For this reason we also supply a “Dynamic Power”
rating which measures the ability of the amplifier to produce power in short bursts similar to those found in music
and movies. In our experience an amplifier with higher Dynamic Power output will play louder under most condi-
tions regardless of the continuous power rating. Dynamic Power is typically greater than continuous average
power although it is not uncommon for two amplifiers with identical FTC “Continuous Average” ratings to have
very different Dynamic Power performance.
However, loudspeaker efficiency is by far the most important factor in determining how loud your system will
play. Loudspeaker efficiency is usually given as the amount of sound produced by 1 watt at a distance of 1 meter.
A medium efficiency loudspeaker rating would be around 87 dB from 1 watt at 1 meter. A highly efficient loud-
speaker might be 90 dB. Each 3dB increase in efficiency doubles the sound output for a given power input. So
a 100 watt, 90 dB self-powered speaker and a 200 watt 87 dB unit would produce the same sound output. For
this reason we also specify the loudspeaker efficiency and calculated maximum sound output.
Polk Audio and the Consumer Electronics Manufacturer‘s Association are currently engaged in an effort to set
standards for specifying the actual acoustic output of self-powered speakers. If we are successful, consumers
will be able to use these ratings to make more meaningful product comparisons and better purchasing decisions
in the future.
17
SPECIFICATIONS
16
RM7500
System
Overall Frequency Response:
25Hz - 25kHz
-3dB Limits:
28Hz - 23kHz
Nominal Impedance:
Compatible with 8 Ohm Outputs
Satellite-Center to Sub Crossover:
Variable (80-100 Hz Recommended)
Shipping Weight (box 1):
57 lbs • 25.9 kgs
Shipping Weight (box 2):
61 lbs • 27.7 kgs
RM75S
Front & Rear Satellites
(Magnetically Shielded)
Driver Complement:
Mid-Bass: 1 - 5 1/4" (13.3cm) Polypropylene
Composite with Rubber Surround,
Tweeter: 1 - 1" (25mm) Dome,
Overall Frequency Response:
60Hz-25kHz
-3dB limits:
90Hz-23kHz
Sensitivity:
89dB SPL @ 1m,
2.83 Vrms Drive Level
Crossover Topology:
Mid-Bass Driver:
1st Order High-Pass @ 80Hz
2nd Order Low-Pass Filters
Tweeter:
2nd Order High-Pass
(Mylar Film Capacitors in Signal Path)
Mid-Bass-to-Tweeter Acoustic Crossover
@ 2.5kHz
Impedance:
Compatible with 8 Ohm Outputs
Enclosure Type:
Vented, Power Port
Wall Mounting:
Power Port Bracket
on rear of Enclosure
Recommended Amplifier Power:
20-150 Watts/Channel
Dimensions:
11 1/2"H x 9 1/2"W x 5 1/2"D
29.2cmH x 24.1cmW x 14.0cmD
Shipping Weight (pair):
20 lbs • 9.1 kgs
RM75C
Center Channel
(Magnetically Shielded)
Driver Complement:
Mid-Bass: 2 - 5 1/4" (13.3cm) Polypropylene
Composite with Rubber Surround,
Tweeter: 1 - 1" (25mm) Dome,
Overall Frequency Response:
60Hz - 25kHz
-3dB limits:
90Hz - 23kHz
Sensitivity:
91dB SPL @ 1m,
2.83 Vrms Drive Level
Crossover Topology:
Mid-Bass Driver:
1st Order High-Pass @ 80Hz
2nd Order Low-Pass filters Cascaded,
-6dB re Midband Level @ 1.8 and 2.8kHz
Tweeter:
2nd Order High-Pass
(Mylar Film Capacitors in Signal Path)
Mid-Bass-to-Tweeter Acoustic Crossover
@ 2.3kHz
Impedance:
Compatible with 8 Ohm Outputs
Enclosure Type:
Vented, Dual Power Port
Wall Mounting:
Power PortBrackets
on rear of Enclosure
Recommended Amplifier Power:
20 - 150 Watts/Channel
Dimensions:
6 1/4"H x 21 1/2"W x 5 1/2"D
15.9cmH x 54.6cmW x 14.0cmD
Shipping Weight (each):
17 lbs • 7.7 kgs
PSW650
Subwoofer
Driver Complement:
2 - 10"(25cm) Woofers
Continuous Average Power*
165 watts into 4 Ohms @ 1% THD over
power bandwidth of 30 - 120Hz
Dynamic Power Rating*
250 watts into 4 Ohms
System Acoustic Efficiency
89 dB at 1 meter
Calculated Maximum Output (in-room)
114dB at 1 meter
Enclosure Type:
Direct Radiating, Vented
Port Type:
Dual, Power Port, Rear Firing
Overall Frequency Response:
25Hz - 180Hz
-3dB Limits:
28Hz - 125Hz
Variable Low-Pass:
40 - 120Hz, 4th Order
Fixed High-Pass:
Line Level: 80Hz, 2nd Order
Speaker Level: 80Hz, 1st Order
Bass Boost:
0 or +3dB
Phase Control:
Switch Normal and Reverse (0º or 180º)
Inputs:
Speaker and Line Level (Filtered)
LFE Line (Unfiltered)
Outputs:
Speaker Level, Pass-Through or 80Hz High-
Pass Filtered (Switchable)
Line Level, High-Pass Filtered at 80Hz
Dimensions:
18 3/4"H x 17 1/2"W x 18 3/4"D
47.6cmH x 44.5cmW x 45.7cmD
Shipping Weight (each):
61 lbs • 27.7 kgs
Note: Specifications are subject to change without notice.
POLK AUDIO LIMITED WARRANTY
Warranty for Satellites and
Center Channel Loudspeakers
Polk Audio, Inc. warrants to the original pur-
chaser only that this Polk Audio Loudspeaker
Product (the “Product”) will be free from defects
in materials and workmanship for a period of
five (5) years from the date of original retail
purchase from a Polk Audio Authorized Dealer.
However, this Warranty will automatically
terminate prior to the expiration of the five (5)
years if the original retail purchaser sells or
otherwise transfers the Product to any other
party. The original retail purchaser shall here-
inafter be referred to as “you.”
Warranty for PSW650 Subwoofer
Polk Audio, Inc., warrants to the original pur-
chaser only that the amplifier in this Polk Audio
Loud-speaker Product (the “Product”) will be
free from defects in material and workmanship
for a period of three (3) years from the date
of original retail purchase from a Polk Audio
Authorized Dealer. Polk Audio, Inc., further
warrants to the original purchaser only that
the Loudspeaker(s) in this Polk Audio Product
(the “Product”) will be free from defects in
material and workmanship for a period of five
(5) years from the date of original retail pur-
chase from a Polk Audio Authorized Dealer.
The original retail purchaser shall hereinafter
be referred to as “you.” However, this Warranty
will automatically terminate prior to the expira-
tion if you sell or otherwise transfer the Product
to any other party.
To allow Polk Audio to offer the best possible
warranty service, please fill out the Product
Registration Card(s) and send it to the Factory,
at the address provided on the Product Cards(s)
within ten (10) days of the date of purchase.
Defective Products must be shipped, together
with proof of purchase, prepaid insured to
the Polk Audio Authorized Dealer from whom
you purchased the Product, or to the Factory
at 2550 Britannia Boulevard, Suite D,
San Diego, California 92173. Products must
be shipped in the original shipping container
or its equivalent; in any case the risk of loss
or damage in transit is to be borne by you.
If upon examination at the Factory or Polk
Audio Authorized Dealer it is determined that
the unit was defective in materials or workman
ship at any time during this Warranty period,
Polk Audio or the Polk Audio Authorized Dealer
will, at its option, repair or replace this Product
at no additional charge, except as set forth
below. All replaced parts and Products become
the property of Polk Audio. Products replaced or
repaired under this warranty will be returned to
you, within a reasonable time, freight prepaid.
This warranty does not include service or parts
to repair damage caused by accident, disaster,
misuse, abuse, negligence, inadequate packing
or shipping procedures, commercial use, voltage
inputs in excess of the rated maximum of the
unit, cosmetic appearance of cabinetry not
directly attributable to defect in materials or
workmanship, or service, repair, or modification
of the Product which has not been authorized
or approved by Polk Audio. This warranty shall
terminate if the Serial number on the Product
has been removed, tampered with or defaced.
This warranty is in lieu of all other expressed
Warranties. If this Product is defective in mate-
rials or workmanship as warranted above, your
sole remedy shall be repair or replacement as
provided above. In no event will Polk Audio, Inc.
be liable to you for any incidental or consequen-
tial damages arising out of the use or inability
to use the Product, even if Polk Audio, Inc. or a
Polk Audio Authorized Dealer has been advised
of the possibility of such damages, or for any
claim by any other party. Some states do not
allow the exclusion or limitation of consequen-
tial damages, so the above limitation and exclu-
sion may not apply to you.
All implied warranties on this Product are
limited to the duration of this expressed
Warranty. Some states do not allow limitation
on how long an implied Warranty lasts, so the
above limitations may not apply to you. This
Warranty gives you specific legal rights, and
you also may have other rights which vary
from state to state.
This Warranty applies only to Products pur-
chased in the United States of America, its
possessions, and U.S. and NATO armed forces
exchanges and audio clubs. The Warranty terms
and conditions applicable to Products purchased
in other countries are available from the Polk
Audio Authorized Distributors in such countries.
“Polk Audio” and “The Speaker Specialists are trademarks of Britannia Investment Corporation
used under license by Polk Audio Incorporated.
Dolby, Pro Logic, and AC-3 are registered trademarks of Dolby Laboratories Licensing Corporation.