In this review, we will be comparing SubSeries BP8 and KC62, two Powered Subwoofer speakers from PSB and KEF. 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 PSB SubSeries BP8 and KEF KC62 first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how the PSB SubSeries BP8 and KEF KC62 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.PSB SubSeries BP8 and KEF KC62 have a totally different setup: the PSB SubSeries BP8 features 1 x 8-inch drivers whereas the KC62 features 2 x 6.5-inch drivers.
Frequency Response
SubSeries BP8 has a frequency range of 25-150 Hz whereas KC62 has a frequency range of 11-200 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 BP8's min frequency of 25Hz.
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 PSB SubSeries BP8 and KEF KC62 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 PSB SubSeries BP8's and KEF KC62's external dimensions. PSB SubSeries BP8 has external dimensions of 355 x 330 x 330mm ( 14 x 13 x 13 inch) whereas 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 ) .
PSB SubSeries BP8 is clearly the larger of the two speakers. Its body is 72mm wider, 110mm taller and 49mm deeper than KEF KC62.
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 PSB SubSeries BP8 is approximately 1089.0cm2 / 168.8inch2 and base area of the KEF KC62 is approximately 725.0cm2 / 112.4inch2. The SubSeries BP8 requires 50% more surface area than the KC62 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 PSB SubSeries BP8 weighs 19.10kg / 42lbs and the KEF KC62 weighs 14.05kg / 30.9lbs. This makes the SubSeries BP8 36% heavier than the KC62.
Here is a comparison of how SubSeries BP8 and KC62's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of PSB SubSeries BP8?
Here are the items that are included inside the box of SubSeries BP8:
Powered subwooferDetachable grille8-feet Power cordOwners GuideSpecifications sheetWarranty Card
What's in the Box of KEF KC62?
Here are the items that come with the KC62:
Powered subwoofer6.5-feet AC power cordSpeaker-level input blockUser ManualImportant Safety InformationWarranty Information
 Woofer Size |
8 inches
vs
6.5 inches
|
Larger woofer |
 Price per pair* |
1499USD
vs
1500USD
|
costs less (*prices may change depending on the seller, location and time) |
| Number of Woofers |
2
vs
1
|
More woofers |
| Low Frequency Response |
11 Hz
vs
25 Hz
|
Generates deeper bass |
 High Frequency Response |
200k Hz
vs
150k Hz
|
Generates higher frequency |
 Height |
245mm
vs
355mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
725cm2 (258x281mm)
vs
1089cm2 (330x330mm)
|
Takes less floor space |
| General |
PSB SubSeries BP8 |
KEF KC62 |
| Brand |
PSB |
KEF |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
500 watts |
1000 watts |
| Frequency Response |
25-150 Hz |
11-200 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
500-watt RMS |
1000-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
2 |
| Woofer Size |
8" |
6.5" |
| Woofer Composition |
Carbon Fibre |
|
| Woofer Surround Material |
High Density Rubber |
n/a |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
side |
Physical Specs |
|
|
| Height |
355.0mm (14") |
245.0mm (9.6") |
| Width |
330.0mm (13") |
258.0mm (10.2") |
| Depth |
330.0mm (13") |
281.0mm (11.1") |
| Weight |
19.10kg (42lbs) |
14.05kg (30.9lbs) |
| Enclosure |
Acoustic Suspension |
Acoustic Suspension |
| Available Colors |
Satin Black, Satin White |
n/a |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
1 Year |
2 Years |
| Labor Warranty |
1 Year |
2 Years |