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.
| Key Specs | KEF R3 | JBL L82 Classic |
|---|
| Brand | KEF
United Kingdom · founded 1961 | JBL
United States · founded 1946 |
|---|
| Design | 3-way | 2-way |
|---|
| Uni-Q driver | 12th Generation Uni-Q | — |
|---|
| Tweeter | 1" Dome | 1" Dome |
|---|
| Midrange | 5" | — |
|---|
| Woofer | 6.5" Hybrid aluminum | 8" Pulp |
|---|
| Frequency response | 52-28k Hz | 44-40k Hz |
|---|
| Sensitivity | 87 dB | 88 dB |
|---|
| Impedance | 8 ohms | 8 ohms |
|---|
| Power range | 15-180 watts | 25-125 watts |
|---|
| Weight | 13.55kg / 29.8lbs | 12.80kg / 28.2lbs |
|---|
| Dimensions (H x W x D) | 16-5/8" x 7-13/16" x 13-1/4"
423.0 x 199.0 x 337.0mm | 18.6" 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.)
The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.
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.
KEF R3JBL L82 Classic
TweeterMidrangeWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| 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.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
Neither pair reaches down to 20Hz, the usual definition of full-range, which is normal for speakers of this size. If you want the bottom octave for movies or bass-heavy music, add a subwoofer to whichever you choose. 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. Staying
within that range gives nominal performance; driving the speaker beyond its maximum wattage can damage it.
R3 can handle a max power of 180 watts RMS, whereas L82 Classic has a max power handling value of 125 watts RMS, 55 watts less than the R3.
Note that higher power handling does not make a speaker louder: that depends mainly on
sensitivity and impedance. The calculator below shows how loud each of these actually plays
on a real amplifier.
Which plays louder on your amplifier?
Starting with a popular amplifier - change it to the one you own, or any you are
considering, and watch both numbers move.
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
The size of a speaker can sometimes be 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 loudspeakers
- 2 Grilles
- 2 Foam port plugs
- 8 Self-adhesive rubber feet
- User Manual
- Warranty 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
 Max Input Power |
180 watts
vs
125 watts
|
Handle more power from your amplifier |
 Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
 Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
 Height |
423mm
vs
472mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
670cm2
vs
886cm2
|
Takes less floor space |
 Price per pair* |
2200USD
vs
2750USD
|
costs less (*prices may change depending on the seller, location and time) |
 Sensitivity |
88 dB
vs
87 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
8 inches
vs
6.5 inches
|
Larger woofer |
|
Low Frequency Response |
44 Hz
vs
52 Hz
|
Generates deeper bass |
 High Frequency Response |
40k Hz
vs
28k Hz
|
Generates higher frequency |
 Port Position |
Front
vs
Rear
|
Gives more flexibility placing close to walls |
| General |
KEF R3 |
JBL L82 Classic |
| Brand |
KEF |
JBL |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
15-180 watts |
25-125 watts |
| Sensitivity |
87 dB |
88 dB |
| Impedance |
8 ohms |
8 ohms |
| Impedance |
3.2 ohms |
n/a |
| Frequency Response |
52-28k Hz |
44-40k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
6.5" |
8" |
| Woofer Composition |
Hybrid aluminum |
Pulp |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Dome |
Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
5" |
No |
| Crossover Frequency |
400Hz and 2900Hz |
1700Hz |
| Firing Direction |
rear |
front |
Physical Specs |
|
|
| Height |
423.0mm (16.7") |
472.8mm (18.6") |
| Width |
199.0mm (7.8") |
281.0mm (11.1") |
| Depth |
337.0mm (13.3") |
315.5mm (12.4") |
| Weight |
13.55kg (29.8lbs) |
12.80kg (28.2lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Lacquer |
MDF/Wood veneer |
| Available Colors |
Black Gloss, White Gloss, Walnut |
Walnut |
| Mounting Bracket |
No |
No |
| Recommended Stand Height |
n/a |
15.5" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
Yes |
No |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |
No single best speaker here - they are built to different priorities, and the right one depends on your room, your amplifier and what you listen to.
| Area | Better | Why |
|---|
| Bass | B | JBL L82 Classic digs deeper - 44Hz against 52Hz. A subwoofer would even that out. |
| Amplifier needs | evenly matched | Similar sensitivity (87dB vs 88dB) - both want much the same power. |
| Headroom | A | KEF R3 takes more power (180W vs 125W) - more in hand in a big room. |
| Size | depends | KEF R3 is easier to place; JBL L82 Classic is bigger, which usually goes with fuller bass. Your room decides. |
| Expandability | A | KEF R3: bi-amping. |
| Price | A | KEF R3 is cheaper - $2,200 against $2,750, about 20% less. |
A KEF R3 B JBL L82 Classic
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both speakers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
KEF R3 has the edge on paper, though the margin is not large. The rows marked "depends" may matter more to you than the score does. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 52Hz anyway, which makes the cheaper KEF R3 much easier to justify. In a large or open-plan room, JBL L82 Classic has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, KEF R3 is the easier speaker to get right.
And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.