In this review, we will be comparing R3 and L82 Classic, two Passive Bookshelf speakers from KEF and JBL. Let's have a brief look at the main features
of KEF R3 and JBL L82 Classic first before getting into our more
detailed comparison.
KEF R3 Key Specs
- 3-way Design
- 1" Dome Tweeter
- 5" Midrange
- 6.5" Hybrid aluminum Woofer
- 52-28k Hz Frequency Response
- 87 dB Sensitivity
- Impedance: 8ohms
- Power Range:15-180watts
- Weight:13.55kg
- Dimensions (H x W x D): 423.0" x 7-13/16" x 13-1/4"( 423.0 x 199.0 x 337.0mm )
JBL L82 Classic Key Specs
- 2-way Design
- 1" Dome Tweeter
- 8" Pulp Woofer
- 44-40k Hz Frequency Response
- 88 dB Sensitivity
- Impedance: 8ohms
- Power Range:25-125watts
- Weight:12.80kg
- Dimensions (H x W x D): 472.8" x 11.0" x 12.4"( 472.8 x 281.0 x 315.5mm )
What size room are the KEF R3 and JBL L82 Classic speakers good for?
The size of the room in which you are planning to use these loudspeakers is an important decision factor. Here we have compared their suitability to various sizes of environments considering their size and max power parameters:
| Listening Environment* |
KEF R3 |
JBL L82 Classic |
| Near-field |
Poor |
Poor |
| Small Room |
Average |
Average |
| Mid-size Room |
Good |
Good |
| Large Room |
Average |
Average |
| Very Large Room |
Poor |
Poor |
(* Approximate Room sizes: Small < 100sq. ft / 9 m2, Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: > 400 sq. ft / 36 m2.
Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual listening experience changes depending on floor height, room shape, surface materials, listening position, speaker locations, etc.)
In the following sections, we will get into more detail in order to better understand how the KEF R3 and JBL L82 Classic compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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Drivers
One of the fundamental differences between these two speakers is that R3 is a 3-way design whereas the L82 Classic is a 2-way speaker. 3-way designs utilize a midrange driver in addition to the tweeter and woofer on 2-way designs. Designing a crossover for a 3-way speaker is a complicated process and generally increases the overall cost of the speaker.
| Driver |
KEF R3 |
JBL L82 Classic |
|
Driver Setup
|
3-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
1 x 5-inch |
- |
|
Woofer
|
1 x 6.5-inch
|
1 x 8-inch
|
R3 features a 1" aluminum Dome Tweeter , a 5" Midrange and 1 x 6.5" Hybrid aluminum Woofer with a Crossover frequency at 400Hz and 2900Hz. On the other hand, the L82 Classic features a 1" Titanium Dome Tweeter and 1 x 8" Pulp Woofer with a Crossover frequency at 1700Hz.
Frequency Response
R3 has a frequency range of 52-28k Hz whereas L82 Classic has a frequency range of 44-40k Hz. With a minimum frequency of 44Hz, the L82 Classic can go significantly deeper on the low side and provide stronger bass compared to the R3's min frequency of 52Hz.
Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers in the Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf Speakers
None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.
Impedance and Sensitivity
R3 and L82 Classic have the same Impedance of 8 ohms but where they differ is the sensitivity levels. R3 sensitivity is rated at 87 dB and the L82 Classic's is at 88 dB. This 1 dB difference makes the JBL L82 Classic a more sensitive speaker compared to KEF R3, hence will play louder with the same amount of watts.
Sensitivity
Bookshelf Speakers
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. While using an amplifier within this range ensures the nominal performance , inputting a power that is higher than the max wattage can result in a damaged speaker.
R3 can handle a max power of 180 watts RMS from the amp the whereas L82 Classic has a max power handling value of 125 watts RMS, 55 watts less than the R3.
Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker
compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters
such as Impedance, sensitivity and system efficiencies.
Input Type and Bi-Amping / Bi-Wiring
R3 features Binding post posts which make bi-amping or bi-wiring possible. L82 Classic has a Five-way gold-plated binding posts which doesn't feature bi-amping/bi-wiring.
JBL L82 Classic's Five-way gold-plated binding posts terminals
Cabinet Type and Port Position
R3 has a rear firing port whereas L82 Classic has a front firing ports. JBL L82 Classic's front-firing port gives more flexibility in placement in regards to proximity to walls compared to KEF R3 with its rear-firing port.
KEF R3 Port
Physical Specs
Size of a speaker can sometimes become an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare KEF R3's and JBL L82 Classic's external dimensions. KEF R3 has external dimensions of 423.0 x 199.0 x 337.0mm ( 16-5/8 x 7-13/16 x 13-1/4inch) whereas JBL L82 Classic has external dimensions of 472.8 x 281.0 x 315.5mm ( 18.6 x 11.0 x 12.4inch) .
KEF R3 is 82mm narrower and 49.8mm shorter than JBL L82 Classic but it is also 21.5mm deeper.
Below you can see the front view size comparison of KEF R3 and JBL L82 Classic in scale.
Comparison image of KEF R3 and JBL L82 Classic Size and External Dimensions
Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base surface area of the KEF R3 is approximately 670.6cm2 / 103.9inch2 and base area of the JBL L82 Classic is approximately 886.6cm2 / 137.4inch2. The R3 requires 24% less surface area than the L82 Classic which gives it a small advantage on placement in tight spaces.
Weight Comparison The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The KEF R3 weighs 13.55kg / 29.8lbs and the JBL L82 Classic weighs 12.80kg / 28.2lbs. This makes the R3 6% heavier than the L82 Classic.
Here is a comparison of how R3 and L82 Classic's weights compare with the average, max and min weights in Passive Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of KEF R3?
Here are the items that are included inside the box of R3:
2 Bookshelf loudspeakers2 Grilles2 Foam port plugs8 Self-adhesive rubber feetUser ManualWarranty Information
What's in the Box of JBL L82 Classic?
Here are the items that come with the L82 Classic:
Bookshelf loudspeaker
Grille
Owner's Manual