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Advance Comparison
Brand Name
Polk
Definitive Technology
KEF
GENERAL:
Speaker Type
Bookshelf Speaker
Bookshelf Speaker , Passive Speaker
Bookshelf Speaker
Number Of Channels
2.0 way speaker
2.0 way speaker
3.0 speaker system
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
30-200 watts
20 watts → 200 watts
15-180W
Sensitivity
85.5 dB SPL@2.83V
90dB
87 dB (2.83V, 1m)
Impedance
4 Ω(3.0Ω min.)
8 ohms
8 ohms
Frequency Range
46Hz-38kHz
44 Hz-24,000 Hz
58Hz - 28kHz
Crossover Frequencies
2.6kHz
Small (60 Hz)
400Hz, 2.9kHz
Build Material
Enclosure
Ported
Passive radiator
Bass Reflex
Finish
MDF
MDF
MDF
Color
Brown Walnut / Black Ash
Gloss black, white
Black Gloss / White Gloss / Walnut
Audio Quality ( Tested )
Bass Accuracy:
Good bass extension
Low ends are tighter and deeper.
Deeper and tighter bass with good accuracy
Dialogue & Vocal Accuracy:
clearer vocals
Voices are crystal clear.
Clear and loud vocals
Treble Accuracy
crisp and detailed highs
Highs are clear, detailed and precise.
Rich and accurate highs
Imaging & Soundstage:
impressive imaging and outstanding soundstage
It has great imaging and powerful soundfield.
Great imaging and powerful soundfield
Dynamic Range:
wide dynamic range
Dynamic range is decent.
It has decent dynamic range
Power Handling:
Good power handling
Power handling shows the speaker is easy to drive.
Good power handling
Frequency Response:
Wide frequency response that can get as low as 46Hz
Frequency response is good.
Broad frequency response
Transient Response:
Decent transient response that allows to produce music with accuracy
It has smooth transient response.
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:
Yes
Yes
Yes
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
3
Tweeter Type
Ring Radiator
Annealed Aluminum Dome and Laterally Offset
vented aluminum dome
Tweeter Size (inches)
1
1
1
Midrange Size (inches)
N/A
N/A
5
Midrange Type
N/A
N/A
aluminum cone
Woofer Size (inches)
6.5
6.5
6.5
Woofer Type
Turbine Cone
Polypropylene BDSS Bass
hybrid aluminum
Other
Wireless Features
Bluetooth
N/A
N/A
N/A
Wi-Fi
N/A
N/A
N/A
Other
Size & Weight
Height (inches)
15.66
13
16.6
Width (inches)
8.33
7.25
7.9
Depth (inches)
13.30
12.5
13.2
Weight (pounds)
22 lbs
19lbs
29.8lbs
Recommended Stand Height (inches)
22-26
24-32
18-24
IN THE BOX
Accessories:
Bookshelf loudspeakers, 2 Grilles, 4 Jumper-wires, Cleaning cloth, Owner's Manual, Online Registration
Pair of Bookshelf loudpseaker, 2 Grilles, 4 Jumper-straps, Cleaning cloth
A pair of KEF R3 speaker, User Manual, Information Sheet, Brochure, Microfibre Grille
User manual:
Yes
Yes
Yes
Connector:
Connector Type
Binding post
5-Way Binding Posts - Gold Plated
Binding post
Compatible Connector Types
bare wire, banana plugs (single only), pin-connectors, spade-lugs
bare-wire, pin-connectors, spade-connectors, and banana-plugs (dual or single)
standard speaker wire
Speaker Wire Compatibility
10-16AWG
10AWG
standard speaker wire
Where to Buy
Ebay
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Ali-Expess
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Wallmart
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