Polk Audio Speakers Owner Manual
Car Speakers
Coaxial speaker
Figure 1
BASIC COAXIAL CONNECTION
Automobile horsepower is a good analogy. Your car probably
has far more horsepower than it needs for your daily commute
and is likely capable of going well over 120mph (190km/hr).
Having that extra power is good for on-ramp acceleration
and danger avoidance (like getting away from brain-eating
zombies) but that doesn’t mean that it is advisable to operate
your car on North American highways at full power and maximum speed for an extended period of time. Just ask your local
state trooper if you are in doubt. Similarly, we recommend
using amplifiers and receivers with rated power above the
Power Handling limits of our speakers because having extra
power available for short term peaks is conducive to better
sound quality, maximum dynamic range and effortless high
volume output. But we strongly urge you not to use the
full power of your amplifier or receiver for daily listening.
Loudspeakers can be damaged when an amplifier, regardless
of its wattage, is made to play at higher listening levels than
its power can clearly produce. Operation at this level can result
in very high levels of audible distortion originating in the amplifier, which can add a harsh, gritty sound to your listening
material. If you hear distortion—turn the volume down
or risk damaging your speakers. You can damage just
about any speaker, regardless of power rating, if you drive
an amplifier to or beyond the point of distortion.
Bring On The Noize!
Please inspect each loudspeaker carefully. Notify your
Polk Audio dealer if you notice any damage or missing items.
Keep the carton and packing material. They will do the best
job of protecting your speakers if they need to be transported.
+
–
–
+
Amplifier
Crossover
Tweeter
Mid-Woofer
Figure 2
BASIC COMPONENT CONNECTION
INSTALLING MM5251& MM6501
–
–+ – + –+
Safe Limits of Operation
Polk Audio specifies the recommended amplification range
for each of its passive (non-amplified) loudspeakers. Typically
that specification will be expressed as a range of power such
as 20-200 W (per channel). It is important to understand
what those numbers mean when choosing a receiver or amplifier for your Polk loudspeakers. The lower number indicates
the lowest continuous rated power that will yield acceptable
performance in a typical listening environment. The higher
number indicates the highest per channel power that should
be used with your Polk speakers. That number should not be
confused with a “Power Handling” specification and it does
not imply that the speaker will safely handle that full amount
of power on a long-term basis. We specify a wide range of
power ratings because not all electronics manufacturers use
the same method for rating power. In fact, high quality lowerrated amplifiers sound better and play louder than low quality
units with a higher power rating.
Amplifier
Crossover
Figure 3
INSTALLING MM521, MM651,
MM5251, MM6501 ROUND MODELS
+
Figure 4
INSTALLING MM461p, MM571
OVAL MODELS
Figure 6
INSTALLING MM521, MM5251,
ROUND MODELS
MM571 Shown
Figure 5
INSTALLING MM691
OVAL MODEL WITH GRILLE
Remove bottom mount spacer
ring before installing grille.
Figure 7
INSTALLING MM651& MM6501
WITH GASKET
Figure 8
INSTALLING MM651/MM6501 WITH GRILLE
Some applications may require using the
additional spacer/adapter bracket.
Figure 9
CROSSOVER MOUNTING Allow
for ventilation clearance.
–+
SPACER/ADAPTER BRACKET
(for MM651/MM6501
driver installation only)
Figure 10
TWEETER ATTENUATION SWITCH
A 2-position switch (-3dB, 0dB) allows you
to adjust tweeter level for the tonal balance that's
right for your car and system.
– +
–+
MM6501 & MM5251
MM6501 & MM5251
Figure 12
Flush Mount
TWEETER MOUNTING
1. Check for proper clearance: The flush mount
kit is 7/8" (22.2mm) deep.
2. Mark the center of the hole you want to cut.
Then cut a 2" (50.8mm) diameter hole using
a hole saw, drill bit or razor knife.
Note: The cup and spring clamp come preassembled as a single unit.
3. Route wires through the cutout and then through
the round opening in the bottom of the cup.
4. Press the flush cup/spring clamp assembly into
the cutout until the spring clamp arm's snap
into place.
spring clip
5. Connect wires from the tweeter terminals for
the crossover to the tweeter itself using the
faston connectors. Connect the red wire from
the (+) positive terminal of the crossover tweeter
output to the red positive (+) wire from the tweeter.
Note: Use the included extension wires if the
tweeter leads aren't long enough.
6. Mount the tweeter by snapping it into the flush
mount cup.
Figure 13
Surface Mount
TWEETER MOUNTING
1. Using the base of the surface mount cup as
a template, mark the screw hole and drill them
using a 1/8" (3mm) drill bit. Drill a second hole
(for the speaker wire) using a 3/16" (5mm) drill bit.
2. Screw surface mount cup to the panel.
3. Push the tweeter wires through the open area at
the bottom of the cup and through the 3/16" (5mm)
hole in the panel.
4. Connect wires from the tweeter terminals of
the Crossover to the tweeter wires using faston
connectors. Be sure to connect the red wire
strand from the tweeter to the (+) terminal
of the crossover tweeter output.
5. Mount the tweeter by snapping it into the
mounting cup.
MM Series Full Range/Component Systems Specifications
MM Series Full Range/Component Systems Specifications
MM461p
MM521
MM571
MM651
Type
4" x 6"
plate
5 1/4"
coaxial
5" x 7"
coaxial
6 1/2"
coaxial
Driver complement
3 1/2"
(87.5mm)
mid/woofer
5 1/4"
(131.3mm)
mid/woofer
5" x 7"
(125mm x 175mm)
mid/woofer
6 1/2"
(162.5mm)
mid/woofer
3/4" (19mm)
soft dome tweeter
1" (25mm)
soft dome tweeter
1" (25mm)
soft dome tweeter
1" (25mm)
soft dome tweeter
3 7/8" x 5 15/16"
(115.6mm x
179.7mm)
4 5/8"
(117mm)
4 5/8" x 7 3/16"
(115.6mm x
213mm)
5"
(127mm)
Mounting depth
(top)
1 11/16"
(43mm)
2 3/8"
(60mm)
2 5/8"
(67mm)
2 5/8"
(67mm)
Mounting depth
(bottom)
n/a
2 13/16"
(71mm)
3"
(76mm)
2 7/8"
(73mm)
Peak Power handling
150W
200W
200W
200W
Continuous Power
handling
50W
90W
90W
100W
Nominal Impedance
2.7 Ω
2.7 Ω
2.7 Ω
2.7 Ω
Frequency response
70-25kHz
50-25kHz
38-25kHz
40-25kHz
Grille height
n/a
13/16"
(20mm)
n/a
13/16"
(20mm)
92dB
92dB
Tweeter complement
Cutout dimensions
Sensitivity
90dB
MM5251
MM6501
Type
6" x 9"
three-way
5 1/4"
component
system
6 1/2"
component
system
Driver complement
6" x 9"
(150mm x 225mm)
mid/woofer
5 1/4"
(131.3mm)
mid/woofer
6 1/2"
(162.5mm)
mid/woofer
Tweeter complement
(1) 3/4" (19mm)
(1) 1" (25mm)
soft dome tweeter
1" (25mm)
soft dome tweeter
1" (25mm)
soft dome tweeter
Cutout dimensions
5 1/2" x 8 3/8"
(140mm x 213mm)
4 5/8"
(117mm)
5"
(127mm)
Mounting depth
(top)
3 3/16"
(81mm)
2 3/8"
(60mm)
2 5/8"
(67mm)
Mounting depth
(bottom)
3 1/2"
(89mm)
2 13/16"
(71mm)
2 7/8"
(73mm)
Peak Power handling
300W
200W
250W
Continuous Power
handling
125W
90W
125W
Nominal Impedance
2.7 Ω
2.7 Ω
2.7 Ω
Frequency response
30Hz-25kHz
50Hz-25kHz
40Hz-25kHz
Grille height
1 1/8"
(29mm)
1 1/16"
(27mm)
1 1/16"
(27mm)
Sensitivity
94dB
92dB
94dB
94dB
WARNING: LISTEN CAREFULLY
Polk Audio loudspeakers and subwoofers are capable of playing at extremely high volume levels, which
could cause serious or permanent hearing damage. Polk Audio, Inc. accepts no liability for hearing loss,
bodily injury or property damage resulting from the misuse of its products.
Keep these guidelines in mind and always use your own good judgment when controlling volume:
• You should limit prolonged exposure to volumes that exceed 85 decibels(dB).
• High volume in an automobile can hinder your ability to safely operate a vehicle.
MM691
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