In this review, we will be comparing 4305P and LS50 Wireless II, two Powered Bookshelf speakers from JBL and KEF. Being Powered speakers, they both have built-in amplifiers so you don't need an external power amp or an integrated amp to power them.
Let's have a brief look at the main features
of JBL 4305P and KEF LS50 Wireless II first before getting into our more
detailed comparison.
JBL 4305P Key Specs
- 2-way Design
- 300-watt RMS Integrated Amplifier
- 1" Horn-Loaded Tweeter
- 5.25" Pulp Woofer
- 45-25k Hz Frequency Response
- 24-bit Max Depth / 192kHz Max Sample Rate
- Built-in 5.1 Bluetooth
- App Control Feature
- Weight:6.60kg
- Dimensions (H x W x D): 336.0" x 8.3125" x 11.3125"( 336mm x 210mm x 223.3mm )
KEF LS50 Wireless II Key Specs
- 2-way Design
- 380-watt RMS( 760-watt Peak) Integrated Amplifier
- 12th Generation Uni-Q Driver
- 1" Hard-Dome Tweeter
- 5.25" Aluminum Woofer
- 45-28k Hz Frequency Response
- 32-bit Max Depth / 384 kHz Max Sample Rate
- Built-in 4.2 Bluetooth
- App Control Feature
- Weight:10.00kg
- Dimensions (H x W x D): 277.8" x 7.875" x 12.6875"( 277.8 x 200.0 x 322.3mm )
In the following sections, we will get into more detail in order to better understand how the JBL 4305P and KEF LS50 Wireless II 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
Both 4305P and LS50 Wireless II are 2-way speakers.
| Driver |
JBL 4305P |
KEF LS50 Wireless II |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5.25-inch
|
1 x 5.25-inch
|
4305P features a 1" Teonex Horn-Loaded Tweeter and 1 x 5.25" Pulp Woofer with a Crossover frequency at 1750 Hz. On the other hand, the LS50 Wireless II features a 1" Aluminum Hard-Dome Tweeter and 1 x 5.25" Aluminum Woofer .
Frequency Response
4305P has a frequency range of 45-25k Hz whereas LS50 Wireless II has a frequency range of 45-28k Hz.
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.
Cabinet Type and Port Position
4305P has a front firing port whereas LS50 Wireless II has a rear firing ports. JBL 4305P's front-firing port gives more flexibility in placement in regards to proximity to walls compared to KEF LS50 Wireless II with its rear-firing 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 JBL 4305P's and KEF LS50 Wireless II's external dimensions. JBL 4305P has external dimensions of 336mm x 210mm x 223.3mm ( 13.3125inch x 8.3125inch x 11.3125inch ) whereas KEF LS50 Wireless II has external dimensions of 277.8 x 200.0 x 322.3mm ( 10.9375 x 7.875 x 12.6875inch) .
KEF LS50 Wireless II is 10mm narrower and 58.2mm shorter than JBL 4305P but it is also 99.3mm deeper.
Below you can see the front view size comparison of JBL 4305P and KEF LS50 Wireless II in scale.
Comparison image of JBL 4305P and KEF LS50 Wireless II 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 JBL 4305P is approximately 468.0cm2 / 72.5inch2 and base area of the KEF LS50 Wireless II is approximately 644.6cm2 / 99.9inch2. The 4305P requires 27% less surface area than the LS50 Wireless II which gives it a small advantage on placement in tight spaces.
Here is an another comparison that shows both speakers on a BDI Octave Media Cabinet, next to a standard size amplifier and turntable in scale:
Size Comparison image of JBL 4305P and KEF LS50 Wireless II on a Media Console
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 4305P weighs 6.60kg / 14.5lbs and the KEF LS50 Wireless II weighs 10.00kg / 22lbs. This makes the LS50 Wireless II 52% heavier than the 4305P.
Here is a comparison of how 4305P and LS50 Wireless II's weights compare with the average, max and min weights in Powered Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of JBL 4305P?
Here are the items that are included inside the box of 4305P:
2 Powered speakers2 GrillesTwo 69-inch AC power cords10-feet CAT5e cableRemote control2 AAA batteries8 Self-adhesive feetOwner-feets ManualImportant Safety Instructions
What's in the Box of KEF LS50 Wireless II?
Here are the items that come with the LS50 Wireless II:
2 Wireless powered speakersTwo 6.5-feet AC power cords10-feet Cat-6 interconnect speaker cableRemote control2 AAA batteries Quick Start Guide Important Safety Information Warranty Information
 Port Position |
Front
vs
Rear
|
Gives more flexibility placing close to walls |
 Base Surface Area |
468cm2
vs
644cm2
|
Takes less floor space |
 Price per pair* |
2200USD
vs
2499USD
|
costs less (*prices may change depending on the seller, location and time) |
 High Frequency Response |
28k Hz
vs
25k Hz
|
Generates higher frequency |
 Height |
277mm
vs
336mm
|
Easier to fit in smaller spaces |
 HDMI Input |
eARC
vs
No
|
Connect HDMI sources directly |
| General |
JBL 4305P |
KEF LS50 Wireless II |
| Brand |
JBL |
KEF |
| Speaker Type |
Powered Stereo Speakers |
Powered Stereo Speakers |
| Frequency Response |
45-25k Hz |
45-28k Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
300-watt RMS |
380-watt RMS |
| Watts Peak (Max) |
n/a |
760-watt RMS |
| Max Bit Depth |
24-bit |
32-bit |
| Max Sample Rate |
192kHz |
384 kHz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5.25" |
5.25" |
| Woofer Composition |
Pulp |
Aluminum |
| Woofer Surround Material |
n/a |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Horn-Loaded |
Hard-Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
1750 Hz |
n/a |
| Firing Direction |
front |
rear |
Physical Specs |
|
|
| Height |
336.0mm (13.2") |
277.8mm (10.9") |
| Width |
210.0mm (8.3") |
200.0mm (7.9") |
| Depth |
223.0mm (8.8") |
322.3mm (12.7") |
| Weight |
6.60kg (14.5lbs) |
10.00kg (22lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
3/4-inch MDF with real wood veneer |
n/a |
| Available Colors |
Satin Walnut, Black Walnut |
n/a |
| Mounting Bracket |
No |
No |
| Grille |
Yes |
n/a |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Aux Inputs |
3.5mm |
3.5mm |
| USB Port |
USB-B |
Service only |
| Phone Input |
No |
No |
| Subwoofer Output |
mono-RCA |
Wired |
| Digital Input |
Optical |
Optical, Coax |
| HDMI Input |
No |
eARC |
| Headphone Jack |
No |
No |
| Ethernet Port |
Yes |
Yes |
Other |
|
|
| Parts Warranty |
5yr drivers/2 yr amp |
1 Year |
| Labor Warranty |
5yr drivers/2 yr amp |
1 Year |