In this review, we will be comparing Prime Wireless Pro and LS50 Wireless II, two Powered Bookshelf speakers from SVS 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 SVS Prime Wireless Pro and KEF LS50 Wireless II first before getting into our more
detailed comparison.
SVS Prime Wireless Pro Key Specs
- 2-way Design
- 200-watt RMS Integrated Amplifier
- 1" Dome Tweeter
- 5.25" Polypropylen cone Woofer
- 42-25k Hz Frequency Response
- 24-bit Max Depth / 192 kHz Max Sample Rate
- Built-in 5.0 Bluetooth
- App Control Feature
- Weight:5.30kg
- Dimensions (H x W x D): 295.0" x 7.09" x 8.96"( 295 x 180 x 228mm )
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 SVS Prime Wireless Pro 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 Prime Wireless Pro and LS50 Wireless II are 2-way speakers.
| Driver |
SVS Prime Wireless Pro |
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
|
Prime Wireless Pro features a 1" aluminum Dome Tweeter and 1 x 5.25" Polypropylen cone Woofer with a Crossover frequency at 2000Hz. On the other hand, the LS50 Wireless II features a 1" Aluminum Hard-Dome Tweeter and 1 x 5.25" Aluminum Woofer .
Frequency Response
Prime Wireless Pro has a frequency range of 42-25k Hz whereas LS50 Wireless II has a frequency range of 45-28k Hz. With a minimum frequency of 42Hz, the Prime Wireless Pro can go slightly deeper then the LS50 Wireless II's min frequency of 45Hz.
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
Both Prime Wireless Pro and LS50 Wireless II have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.
If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.
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 SVS Prime Wireless Pro's and KEF LS50 Wireless II's external dimensions. SVS Prime Wireless Pro has external dimensions of 295 x 180 x 228mm ( 11.61 x 7.09 x 8.96 inch) 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) .
SVS Prime Wireless Pro is 20mm narrower and 94.3mm less deeper than KEF LS50 Wireless II but it is also 17.2mm 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 SVS Prime Wireless Pro is approximately 414.0cm2 / 64.2inch2 and base area of the KEF LS50 Wireless II is approximately 644.6cm2 / 99.9inch2. The Prime Wireless Pro requires 36% less surface area than the LS50 Wireless II 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 SVS Prime Wireless Pro weighs 5.30kg / 11.7lbs and the KEF LS50 Wireless II weighs 10.00kg / 22lbs. This makes the LS50 Wireless II 89% heavier than the Prime Wireless Pro.
Here is a comparison of how Prime Wireless Pro 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 SVS Prime Wireless Pro?
Here are the items that are included inside the box of Prime Wireless Pro:
Active wireless speaker6-feet AC power cordGrille (pre-installed)8 Self-adhesive feetActive-Passive Speaker Interconnect Cable: 3m / 10ftQuick Start GuideWarranty/Registration CardSVS brochureRemote
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
 Low Frequency Response |
42 Hz
vs
45 Hz
|
Generates deeper bass |
 Base Surface Area |
414cm2
vs
644cm2
|
Takes less floor space |
 Price per pair* |
899USD
vs
2499USD
|
costs less (*prices may change depending on the seller, location and time) |
 RCA Connection |
Yes
vs
No
|
Connection via RCA input |
 High Frequency Response |
28k Hz
vs
25k Hz
|
Generates higher frequency |
 Height |
277mm
vs
295mm
|
Easier to fit in smaller spaces |
| General |
SVS Prime Wireless Pro |
KEF LS50 Wireless II |
| Brand |
SVS |
KEF |
| Speaker Type |
Powered Stereo Speakers |
Powered Stereo Speakers |
| Frequency Response |
42-25k Hz |
45-28k Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
200-watt RMS |
380-watt RMS |
| Watts Peak (Max) |
n/a |
760-watt RMS |
| Max Bit Depth |
24-bit |
32-bit |
| Max Sample Rate |
192 kHz |
384 kHz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5.25" |
5.25" |
| Woofer Composition |
Polypropylen cone |
Aluminum |
| Woofer Surround Material |
n/a |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Dome |
Hard-Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
2000Hz |
n/a |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
295.0mm (11.6") |
277.8mm (10.9") |
| Width |
180.0mm (7.1") |
200.0mm (7.9") |
| Depth |
228.0mm (9") |
322.3mm (12.7") |
| Weight |
5.30kg (11.7lbs) |
10.00kg (22lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Available Colors |
Piano Gloss Black,Piano Gloss White |
n/a |
| Mounting Bracket |
No |
No |
| Grille |
Yes |
n/a |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Aux Inputs |
3.5mm, RCA |
3.5mm |
| USB Port |
Service and Powering only |
Service only |
| Phone Input |
No |
No |
| Subwoofer Output |
Wired |
Wired |
| Digital Input |
Optical |
Optical, Coax |
| HDMI Input |
ARC,eARC |
eARC |
| Headphone Jack |
No |
No |
| Ethernet Port |
Yes |
Yes |
Other |
|
|
| Parts Warranty |
2 Years |
1 Year |
| Labor Warranty |
2 Years |
1 Year |