In this review, we will be comparing KC62 and SubSeries 150, two Powered Subwoofer speakers from KEF and PSB. Being Powered subwoofers, 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 KEF KC62 and PSB SubSeries 150 first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how the KEF KC62 and PSB SubSeries 150 compare and hopefully end up with enough arguments to decide which one of these subwoofers is the better choice for you.
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Drivers
The efficiency of a subwoofer is directly proportional to the total radiating are squared hence the woofer quantity and diameter.KEF KC62 and PSB SubSeries 150 have a totally different setup: the KEF KC62 features 2 x 6.5-inch drivers whereas the SubSeries 150 features 1 x 6.5-inch drivers.
Frequency Response
KC62 has a frequency range of 11-200 Hz whereas SubSeries 150 has a frequency range of 26-150 Hz. With a minimum frequency of 11Hz, the KC62 can go significantly deeper on the low side and provide stronger bass compared to the SubSeries 150's min frequency of 26Hz.
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 Subwoofer class in our database.
Low Frequency
Subwoofer Speakers
High Frequency
Subwoofer Speakers
Cabinet Type
Both KEF KC62 and PSB SubSeries 150 have Acoustic Suspension type cabinets. Acoustic Suspension aka Sealed type subwoofers have enclosures that are sealed hence no ports or holes exists on the cabinet. Sealed designs helps to provide more accurate and tight bass responses compared to ported designs.
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 KC62's and PSB SubSeries 150's external dimensions. KEF KC62 has external dimensions of 245.0 x 258.0 x 281.0mm ( 9-5/8inch x 10-1/8inch x 11-1/16inch ) whereas PSB SubSeries 150 has external dimensions of 280.0 x 447.0 x 143.0mm ( 11 x 17-9/16 x 5-5/8inch) .
KEF KC62 is 189mm narrower and 35mm shorter than PSB SubSeries 150 but it is also 138mm deeper.
Below you can see the front view size comparison of KEF KC62 and PSB SubSeries 150 in scale.
Comparison image of KEF KC62 and PSB SubSeries 150 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 KC62 is approximately 725.0cm2 / 112.4inch2 and base area of the PSB SubSeries 150 is approximately 639.2cm2 / 99.1inch2. The KC62 requires 13% more surface area than the SubSeries 150 which gives it a small disadvantage on placement in tight spaces.
Weight Comparison The weight of a subwoofer may become an important factor if you need to move and reposition the unit often to find the optimal positioning, also known as 'Subwoofer Crawling'. The KEF KC62 weighs 14.05kg / 30.9lbs and the PSB SubSeries 150 weighs 6.05kg / 13.3lbs. This makes the KC62 132% heavier than the SubSeries 150.
Here is a comparison of how KC62 and SubSeries 150's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of KEF KC62?
Here are the items that are included inside the box of KC62:
Powered subwoofer6.5-feet AC power cordSpeaker-level input blockUser ManualImportant Safety InformationWarranty Information
What's in the Box of PSB SubSeries 150?
Here are the items that come with the SubSeries 150:
Powered subwoofer6-feet AC power cord2 Mounting feetWall-mount bracketQuick Start Subwoofer GuideLimited Warranty sheetImportant Safety Instructions
 Number of Woofers |
2
vs
1
|
More woofers |
| Low Frequency Response |
11 Hz
vs
26 Hz
|
Generates deeper bass |
 High Frequency Response |
200k Hz
vs
150k Hz
|
Generates higher frequency |
 Height |
245mm
vs
280mm
|
Easier to fit in smaller spaces |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
 Base Surface Area |
639cm2 (447x143mm)
vs
725cm2 (258x281mm)
|
Takes less floor space |
| General |
KEF KC62 |
PSB SubSeries 150 |
| Brand |
KEF |
PSB |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
1000 watts |
100 watts |
| Frequency Response |
11-200 Hz |
26-150 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
1000-watt RMS |
100-watt RMS |
Drivers |
|
|
| Woofer Quantity |
2 |
1 |
| Woofer Size |
6.5" |
6.5" |
| Woofer Composition |
|
Polypropylene |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
side |
front |
Physical Specs |
|
|
| Height |
245.0mm (9.6") |
280.0mm (11") |
| Width |
258.0mm (10.2") |
447.0mm (17.6") |
| Depth |
281.0mm (11.1") |
143.0mm (5.6") |
| Weight |
14.05kg (30.9lbs) |
6.05kg (13.3lbs) |
| Enclosure |
Acoustic Suspension |
Acoustic Suspension |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
1 Year |
| Labor Warranty |
2 Years |
1 Year |