In this review, we will be comparing Bluesound PULSE SUB+ and KC62, two Powered Subwoofer speakers from Bluesound 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 Bluesound PULSE SUB+ 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 Bluesound PULSE SUB+ 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.Bluesound PULSE SUB+ and KEF KC62 have a totally different setup: the Bluesound PULSE SUB+ features 1 x 8-inch drivers whereas the KC62 features 2 x 6.5-inch drivers.
Frequency Response
Bluesound PULSE SUB+ has a frequency range of 22-150 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 Bluesound PULSE SUB+'s min frequency of 22Hz.
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
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 Bluesound PULSE SUB+'s and KEF KC62's external dimensions. Bluesound PULSE SUB+ has external dimensions of 300 x 457 x 146 mm ( ) 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 ) .
KEF KC62 is 199mm narrower and 55mm shorter than Bluesound PULSE SUB+ but it is also 135mm deeper.
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 Bluesound PULSE SUB+ is approximately 667.2cm2 / 103.4inch2 and base area of the KEF KC62 is approximately 725.0cm2 / 112.4inch2. The Bluesound PULSE SUB+ requires 8% less surface area than the KC62 which gives it a small advantage 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 Bluesound PULSE SUB+ weighs 8.28kg / 18.2lbs and the KEF KC62 weighs 14.05kg / 30.9lbs. This makes the KC62 70% heavier than the Bluesound PULSE SUB+.
Here is a comparison of how Bluesound PULSE SUB+ and KC62's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
 Woofer Size |
8 inches
vs
6.5 inches
|
Larger woofer |
 App-Based Control |
BluOS Controller (iOS, Android)
vs
None
|
Control the speaker via an app |
 Base Surface Area |
667cm2
vs
725cm2
|
Takes less floor space |
 Price per pair* |
1149USD
vs
1500USD
|
costs less (*prices may change depending on the seller, location and time) |
 Ethernet Connection |
Yes
vs
No
|
High quality streaming over Ethernet |
| Number of Woofers |
2
vs
1
|
More woofers |
| Low Frequency Response |
11 Hz
vs
22 Hz
|
Generates deeper bass |
 High Frequency Response |
200k Hz
vs
150k Hz
|
Generates higher frequency |
 Height |
245mm
vs
300mm
|
Easier to fit in smaller spaces |
| General |
Bluesound PULSE SUB+ |
KEF KC62 |
| Brand |
Bluesound |
KEF |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Frequency Response |
22-150 Hz |
11-200 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
150-watt RMS |
1000-watt RMS |
| Watts Peak (Max) |
200-watt RMS |
n/a |
Drivers |
|
|
| Woofer Quantity |
1 |
2 |
| Woofer Size |
8" |
6.5" |
| Woofer Composition |
Polypropylene |
|
| Woofer Surround Material |
Rubber |
n/a |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
side |
Physical Specs |
|
|
| Height |
300.0mm (11.8") |
245.0mm (9.6") |
| Width |
457.0mm (18") |
258.0mm (10.2") |
| Depth |
146.0mm (5.7") |
281.0mm (11.1") |
| Weight |
8.28kg (18.2lbs) |
14.05kg (30.9lbs) |
| Enclosure |
|
Acoustic Suspension |
| Finish |
Matte |
n/a |
| Available Colors |
Black, White |
n/a |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| USB Port |
Type A (upgrade only), Type B mini (service) |
n/a |
| Ethernet Port |
Yes |
n/a |
Other |
|
|
| Parts Warranty |
|
2 Years |
| Labor Warranty |
|
2 Years |