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Advance Comparison
Brand Name
KEF
Polk
KEF
GENERAL:
Speaker Type
Bookshelf Speaker
Bookshelf 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
40-100 W
30-200W
15-180W
Sensitivity
85dB
86dB
87 dB (2.83V, 1m)
Impedance
8 ohms
8Ω / 6Ω / 4Ω
8 ohms
Frequency Range
79 Hz - 28 kHz
51Hz - 38kHz
58Hz - 28kHz
Crossover Frequencies
2.1kHz
3000
400Hz, 2.9kHz
Build Material
Enclosure
Ported
Ported
Bass Reflex
Finish
MDF
MDF
MDF
Color
Carbon Black, Titanium grey, Mineral White, Royal Blue
Black / Walnut / White
Black Gloss / White Gloss / Walnut
Audio Quality ( Tested )
Bass Accuracy:
Even and tight bass that is enough for compact spaces
impressive and adequate bass
Deeper and tighter bass with good accuracy
Dialogue & Vocal Accuracy:
Loud vocals
clearer voices
Clear and loud vocals
Treble Accuracy
Natural and rich highs
High ends are clear and airy
Rich and accurate highs
Imaging & Soundstage:
powerful imaging and soundfield
imaging is excellent and it has immersive soundstage
Great imaging and powerful soundfield
Dynamic Range:
satisfying dynamic range
Good dynamic range
It has decent dynamic range
Power Handling:
Good power handling
Good power handling
Good power handling
Frequency Response:
Wide frequency response
Broad frequency response
Broad frequency response
Transient Response:
It has quick transient response.
Good 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:
N/A
N/A
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
vented aluminum dome
Pinnacle Ring Radiator
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)
5.25
6.5
6.5
Woofer Type
aluminum cone
Turbine Cone
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)
11.9
14.1
16.6
Width (inches)
7.9
7.5
7.9
Depth (inches)
11
13.9
13.2
Weight (pounds)
17.2lbs
43.4lbs
29.8lbs
Recommended Stand Height (inches)
25-30
24-28
18-24
IN THE BOX
Accessories:
1 pair of Bookshelf speakers, Foam port plugs, rubber feet, Manual, Warranty, Registration Card
2 Bookshelf loudspeakers, 2 Grilles, Owner's Manual, Online Registration
A pair of KEF R3 speaker, User Manual, Information Sheet, Brochure, Microfibre Grille
User manual:
Yes
Yes
Yes
Connector:
Connector Type
binding posts
Nickel-plated 5-Way
Binding post
Compatible Connector Types
bare wire, pin-connectors, spade-lugs, and banana plugs
bare wire, pin-connectors, spade-lugs, and banana-plugs (single only)
standard speaker wire
Speaker Wire Compatibility
standard speaker wire
16AWG
standard speaker wire
Where to Buy
Ebay
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Ali-Expess
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Wallmart
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