In this review, we will be comparing KC62 and SuperSub X, two Powered Subwoofer speakers from KEF and GoldenEar. 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 GoldenEar SuperSub X 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 GoldenEar SuperSub X 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.Both KEF KC62and GoldenEar SuperSub X have a double woofer setup however the KEF KC62's woofer is 6.5-inch whereas the GoldenEar SuperSub X features a 8-inch woofer.
Frequency Response
KC62 has a frequency range of 11-200 Hz whereas SuperSub X has a frequency range of 12-250 Hz. With a minimum frequency of 11Hz, the KC62 can go slightly deeper then the SuperSub X's min frequency of 12Hz.
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
The KEF KC62 has a Acoustic Suspension type cabinet. 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. On the other hand the GoldenEar SuperSub X have Passive Radiator type enclosure. Passive Radiator type subwoofers sports a non-powered cone that moves in response to the main woofer to move air out in order to generate stronger bass in a smaller body compared to ported or sealed 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 GoldenEar SuperSub X'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 GoldenEar SuperSub X has external dimensions of 324.0 x 356.0 x 388.0mm ( 12-3/4inch x 14inch x 15-1/4inch ) .
GoldenEar SuperSub X is clearly the larger of the two speakers. Its body is 98mm wider, 79mm taller and 107mm deeper than KEF KC62.
Below you can see the front view size comparison of KEF KC62 and GoldenEar SuperSub X in scale.
Comparison image of KEF KC62 and GoldenEar SuperSub X 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 GoldenEar SuperSub X is approximately 1381.3cm2 / 214.1inch2. The KC62 requires 48% less surface area than the SuperSub X 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 KEF KC62 weighs 14.05kg / 30.9lbs and the GoldenEar SuperSub X weighs 18.18kg / 40lbs. This makes the SuperSub X 29% heavier than the KC62.
Here is a comparison of how KC62 and SuperSub X'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 GoldenEar SuperSub X?
Here are the items that come with the SuperSub X:
Powered Subwoofer10-feet AC power cordOwners Manual
 Low Frequency Response |
11 Hz
vs
12 Hz
|
Generates deeper bass |
 Height |
245mm
vs
324mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
725cm2 (258x281mm)
vs
1381cm2 (356x388mm)
|
Takes less floor space |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
| Woofer Size |
8 inches
vs
6.5 inches
|
Larger woofer |
 High Frequency Response |
250k Hz
vs
200k Hz
|
Generates higher frequency |
 Passive Radiator |
two 10.5-inch x 9.5-inch
vs
None
|
Increases the bass performance |
 Price per pair* |
1499USD
vs
1500USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
KEF KC62 |
GoldenEar SuperSub X |
| Brand |
KEF |
GoldenEar |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
1000 watts |
1400 watts |
| Frequency Response |
11-200 Hz |
12-250 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
1000-watt RMS |
1400-watt RMS |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
6.5" |
8" |
| Woofer Composition |
|
Fiber |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
side |
side |
Physical Specs |
|
|
| Height |
245.0mm (9.6") |
324.0mm (12.8") |
| Width |
258.0mm (10.2") |
356.0mm (14") |
| Depth |
281.0mm (11.1") |
388.0mm (15.3") |
| Weight |
14.05kg (30.9lbs) |
18.18kg (40lbs) |
| Enclosure |
Acoustic Suspension |
Passive Radiator |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
3 Years |
| Labor Warranty |
2 Years |
3 Years |