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Advance Comparison
Model
Brand Name
Polk
Klipsch
Polk
GENERAL:
Speaker Type
Bookshelf Speaker
Bookshelf Speaker
Bookshelf Speaker
Number Of Channels
2.0 way speaker
2.0 way speaker
2.0 way speaker
Amplification Type
Passive Speaker (External Amp)
Passive Speaker (External Amp)
Passive Speaker (External Amp)
Power Source
AC Powered
AC Powered
AC Powered
Control
Handheld Remote
N/A
N/A
N/A
Control by app
N/A
N/A
N/A
Amazon Alexa
N/A
N/A
N/A
Google Assistant
N/A
N/A
N/A
Specs
Power Range
30—150W
Up to 85 watts
30—200Wpc
Sensitivity
86dB
93 dB
87dB
Impedance
4- and 8-ohm
8 ohms
4- and 8-ohm
Frequency Range
48-40,000 Hz
62-21k Hz
38Hz—40kHz
Crossover Frequencies
2200Hz
1660Hz
3200Hz
Build Material
Enclosure
Ported
Bass-Reflex
Ported
Finish
MDF
MDF/Wood-grain vinyl
MDF
Color
Black
Black
Black
Audio Quality ( Tested )
Bass Accuracy:
Deep bass without any distortion
Offer sufficient depth and impact without overpowering the other frequencies.
Effortless low ends
Dialogue & Vocal Accuracy:
Clear vocals
Voices are rendered with precision, resulting in an immersive and engaging listening experience
Loud and intelligible vocals.
Treble Accuracy
Detailed and accurate highs
They strike a balance between crispness and smoothness, ensuring a pleasant listening experience without harshness or sibilance.
Crisp and clear highs
Imaging & Soundstage:
Good imaging
Offer a commendable imaging capability, allowing sound sources to be well-defined and accurately placed.
Good imaging with broad and intense soundstage.
Dynamic Range:
Decent dynamic range
Speakers exhibit a wide dynamic range, effortlessly handling both soft and powerful audio passages.
Decent dynamic range
Power Handling:
Good power handling
They efficiently utilize power inputs, making them suitable for various listening environments.
Good power handling
Frequency Response:
It has wide frequency response.
From the low-end to the high-end, they maintain clarity and fidelity, ensuring a well-rounded audio performance across different genres.
Wide frequency response
Transient Response:
Good transient response
The Klipsch R-51M speakers exhibit excellent transient response, capturing the quick and precise changes in audio signals.
Decent transient response
CONNECTIVITY:
Speaker Wire Input:
Yes
Yes
Yes
Speaker Level Input
N/A
N/A
N/A
Line Level Input
N/A
N/A
N/A
Digital Input (Optical)
N/A
N/A
N/A
Digital Input (Coaxial)
N/A
N/A
N/A
RCA Input
N/A
N/A
N/A
3.5mm Stereo Analog Input
N/A
N/A
N/A
Aux Input
N/A
N/A
N/A
Bi-amp Input:
N/A
N/A
N/A
HDMI Input
N/A
N/A
N/A
USB Port
N/A
N/A
N/A
Subwoofer Output
N/A
N/A
N/A
DRIVERS
Drive Unit
2x2
2x2
2x2
Tweeter Type
Terylene dome
Tractrix Horn
Terylene dome
Tweeter Size (inches)
1
1-inch
1
Midrange Size (inches)
N/A
N/A
N/A
Midrange Type
N/A
N/A
N/A
Woofer Size (inches)
5.25
5.25-inch
6.5
Woofer Type
bi-laminate paper
Copper-spun IMG Surrounded by Rubber
bi-laminate paper
Other
Wireless Features
Bluetooth
N/A
N/A
N/A
Wi-Fi
N/A
N/A
N/A
Other
Size & Weight
Height (inches)
10.6
338.0mm ( 13.3-inch)
13
Width (inches)
6.5
178.0mm ( 7.0-inch)
7.5
Depth (inches)
7.18
215.0mm ( 8.4-inch)
10.99
Weight (pounds)
9lbs
5.00kg ( 11.00 lbs.)
12lbs
Recommended Stand Height (inches)
28-32
24-28 inch
24-28
IN THE BOX
Accessories:
1 pair of Bookshelf loudspeakers, 2 Grilles, 8 Self-adhesive rubber feet, Owner's Manual, Online Product Registration
Pair of speakers,2 Grilles (installed),8 Self-adhesive rubber feet, Setup Guide.
Pair of Bookshelf loudspeakers, 2 Grilles, 8 Self-adhesive rubber feet, Owner's Manual, Online Product Registration
User manual:
Yes
Yes
Yes
Connector:
Connector Type
5-way nickel-plated binding posts
Gold-plated binding posts
5-way nickel-plated binding posts
Compatible Connector Types
bare wire (up to 12AWG), pin-connectors, spade-lugs, and banana plugs (single or dual)
banana plugs
bare wire, pin-connectors, spade-lugs, and banana plugs (single or dual)
Speaker Wire Compatibility
12 or 14AWG
10AWG
12 or 14AWG
Where to Buy
Ebay
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Ali-Expess
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Wallmart
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