In this review, we will be comparing 4312G and L52 Classic, two Passive Bookshelf speakers by JBL.
Let's have a brief look at the main features
of JBL 4312G and JBL L52 Classic first before getting into our more
detailed comparison.
| Key Specs | JBL 4312G | JBL L52 Classic |
|---|
| Brand | JBL
United States · founded 1946 | JBL
United States · founded 1946 |
|---|
| Design | 3-way | 2-way |
|---|
| Tweeter | 1" Dome | 0.75" Dome |
|---|
| Midrange | 5" | — |
|---|
| Woofer | 12" Pure Pulp | 5.25" Pulp |
|---|
| Frequency response | 44-40k Hz | 47-24k Hz |
|---|
| Sensitivity | 90 dB | 85 dB |
|---|
| Impedance | 6 ohms | 4 ohms |
|---|
| Power range | 10-200 watts | 10-75 watts |
|---|
| Weight | 23.80kg / 52.4lbs | 5.00kg / 11lbs |
|---|
| Dimensions (H x W x D) | 23-1/2" x 14-1/4" x 12"
597.0 x 362.0 x 305.0mm | 13-1/16" x 7-13/16" x 8-11/16"
332.0 x 199.0 x 221.0mm |
|---|
What size room are the JBL 4312G and JBL L52 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* |
JBL 4312G |
JBL L52 Classic |
| Near-field |
Good |
Good |
| Small Room |
Good |
Good |
| Mid-size Room |
Average |
Average |
| Large Room |
Poor |
Poor |
| Very Large Room |
No way |
No way |
(* 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 4312G is a 3-way design whereas the L52 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.
JBL 4312GJBL L52 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 |
JBL 4312G |
JBL L52 Classic |
|
Driver Setup
|
3-way
|
2-way
|
|
Tweeter
|
1-inch
|
0.75-inch
|
|
Midrange
|
1 x 5-inch |
- |
|
Woofer
|
1 x 12-inch
|
1 x 5.25-inch
|
4312G features a 1" Magnesium/Aluminium Dome Tweeter, a 5" Midrange and 1 x 12" Pure Pulp Woofer with a Crossover frequency at 640Hz and 5000Hz. On the other hand, the L52 Classic features a 0.75" Titanium Dome Tweeter and 1 x 5.25" Pulp Woofer with a Crossover frequency at 2800Hz.
Frequency Response
4312G has a frequency range of 44-40k Hz whereas L52 Classic has a frequency range of 47-24k Hz. With a minimum frequency of 44Hz, the 4312G can go slightly deeper then the L52 Classic's min frequency of 47Hz.
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
4312G is a 6 ohms speaker compared to the L52 Classic which has a nominal impedance of 4 ohms. Lower impedance speakers, especially the ones that are rated at 4 ohms may put more pressure on the amplifier unit especially when played at high volume levels, so make sure the amp you pair with the L52 Classic can provide this impedance level.
These two speakers also have different sensitivity levels. 4312G sensitivity is rated at 90 dB and the L52 Classic's is rated at 85 dB. This 5 dB difference makes the JBL 4312G a more sensitive speaker compared to JBL L52 Classic, 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.
4312G can handle a max power of 200 watts RMS, whereas L52 Classic has a max power handling value of 75 watts RMS, 125 watts less than the 4312G.
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
4312G features Binding post posts which make bi-amping or bi-wiring possible. L52 Classic has a Five-way gold-plated binding posts which doesn't feature bi-amping/bi-wiring.
JBL L52 Classic's Five-way gold-plated binding posts terminals
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 JBL 4312G's and JBL L52 Classic's external dimensions. JBL 4312G has external dimensions of 597.0 x 362.0 x 305.0mm (23-1/2 x 14-1/4 x 12inch) whereas JBL L52 Classic has external dimensions of 332.0 x 199.0 x 221.0mm (13-1/16 x 7-13/16 x 8-11/16inch).
JBL 4312G is clearly the larger of the two speakers. Its body is 163mm wider, 265mm taller and 84mm deeper than JBL L52 Classic.
Size, drawn to scale
Both speakers and both views share one scale, so everything here is directly comparable. Hover a box for its dimensions.
One scale for both, standing on the same surface and pushed back to the same wall, so the deeper one visibly sticks out further.
JBL 4312G needs about 151% more floor or shelf area. JBL 4312G is 84mm deeper, so it stands that much further out from the wall. JBL 4312G is 265mm taller.
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 JBL 4312G is approximately 1104.1cm2 / 171.1inch2 and base area of the JBL L52 Classic is approximately 439.8cm2 / 68.2inch2. The 4312G requires 151% more surface area than the L52 Classic which gives it a small disadvantage 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 JBL 4312G weighs 23.80kg / 52.4lbs and the JBL L52 Classic weighs 5.00kg / 11lbs. This makes the 4312G 376% heavier than the L52 Classic.
Here is a comparison of how 4312G and L52 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 JBL L52 Classic?
Here are the items that come with the L52 Classic:
- 2 Bookshelf loudspeakers
- 2 Grilles
- Owners Manual
 Max Input Power |
200 watts
vs
75 watts
|
Handle more power from your amplifier |
 Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
 Sensitivity |
90 dB
vs
85 dB
|
Play louder with same amount of amplification power |
 Nominal Impedance |
6 ohms
vs
4 ohms
|
Less selective with amplifiers |
 Woofer Size |
12 inches
vs
5.25 inches
|
Larger woofer |
|
Low Frequency Response |
44 Hz
vs
47 Hz
|
Generates deeper bass |
 High Frequency Response |
40k Hz
vs
24k Hz
|
Generates higher frequency |
 Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
 Height |
332mm
vs
597mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
439cm2
vs
1104cm2
|
Takes less floor space |
 Price per pair* |
1000USD
vs
2500USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
JBL 4312G |
JBL L52 Classic |
| Brand |
JBL |
JBL |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
10-200 watts |
10-75 watts |
| Sensitivity |
90 dB |
85 dB |
| Impedance |
6 ohms |
4 ohms |
| Frequency Response |
44-40k Hz |
47-24k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
12" |
5.25" |
| Woofer Composition |
Pure Pulp |
Pulp |
| Woofer Surround Material |
n/a |
Rubber |
| Tweeter Size |
1" |
0.75" |
| Tweeter Type |
Dome |
Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
5" |
No |
| Crossover Frequency |
640Hz and 5000Hz |
2800Hz |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
597.0mm (23.5") |
332.0mm (13.1") |
| Width |
362.0mm (14.3") |
199.0mm (7.8") |
| Depth |
305.0mm (12") |
221.0mm (8.7") |
| Weight |
23.80kg (52.4lbs) |
5.00kg (11lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
n/a |
MDF/Wood veneer |
| Available Colors |
n/a |
Walnut |
| Mounting Bracket |
|
No |
| Recommended Stand Height |
n/a |
22-26" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
Yes |
No |
Other |
|
|
| Parts Warranty |
|
5 Years |
| Labor Warranty |
|
5 Years |
These sit in different price classes - JBL 4312G costs roughly 2.5x what JBL L52 Classic does. Expect it to lead on paper; the question is whether the gap is audible enough in your room to be worth it.
| Area | Better | Why |
|---|
| Bass | A | JBL 4312G digs deeper - 44Hz against 47Hz. A subwoofer would even that out. |
| Amplifier needs | A | JBL 4312G is more sensitive (90dB vs 85dB), so it goes louder on the same amplifier. |
| Amplifier match | A | JBL 4312G is the easier load at 6 ohms; the other is 4 ohms and wants an amplifier rated for it. |
| Headroom | A | JBL 4312G takes more power (200W vs 75W) - more in hand in a big room. |
| Size | depends | JBL L52 Classic is easier to place; JBL 4312G is bigger, which usually goes with fuller bass. Your room decides. |
| Expandability | A | JBL 4312G: bi-amping. |
| Price | B | JBL L52 Classic is cheaper - $1,000 against $2,500, about 60% less; arguably a different class. |
A JBL 4312G B JBL L52 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?
The usual trade-off: JBL 4312G measures better, JBL L52 Classic costs about about 2.5x the price% less. Whether that gap is worth the money is the call only you can make - and in a normal room it is often smaller than the numbers suggest. In a large or open-plan room, JBL 4312G has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, JBL L52 Classic is the easier speaker to get right. If your amplifier is modest, vintage or valve-based, JBL 4312G is the safer partner - the other will want more current or more watts to sound its best.
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.