In this review, we will be comparing KC62 and KF92, two Powered Subwoofer speakers by 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 KEF KC62 and KEF KF92 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 KEF KF92 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 KEF KF92 have a double woofer setup however the KEF KC62's woofer is 6.5-inch whereas the KEF KF92 features a 9-inch woofer.
Frequency Response
KC62 and KF92 has exactly the same frequency range of 11-200 Hz.
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 KEF KF92 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 KEF KF92'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 KEF KF92 has external dimensions of 353.0 x 331.0 x 362.0mm ( 13-7/8 x 13 x 14-1/4inch) .
KEF KF92 is clearly the larger of the two speakers. Its body is 73mm wider, 108mm taller and 81mm deeper than KEF KC62.
Below you can see the front view size comparison of KEF KC62 and KEF KF92 in scale.
Comparison image of KEF KC62 and KEF KF92 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 KEF KF92 is approximately 1198.2cm2 / 185.7inch2. The KC62 requires 39% less surface area than the KF92 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 KEF KF92 weighs 20.05kg / 44.1lbs. This makes the KF92 43% heavier than the KC62.
Here is a comparison of how KC62 and KF92'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 KEF KF92?
Here are the items that come with the KF92:
Powered subwoofer6.5-feet AC power cordSpeaker-level input blockUser ManualImportant Safety InformationWarranty Information
 Height |
245mm
vs
353mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
725cm2 (258x281mm)
vs
1198cm2 (331x362mm)
|
Takes less floor space |
 Price per pair* |
1500USD
vs
2000USD
|
costs less (*prices may change depending on the seller, location and time) |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
 Woofer Size |
9 inches
vs
6.5 inches
|
Larger woofer |
| General |
KEF KC62 |
KEF KF92 |
| Brand |
KEF |
KEF |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
1000 watts |
1000 watts |
| Frequency Response |
11-200 Hz |
11-200 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
1000-watt RMS |
1000-watt RMS |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
6.5" |
9" |
| Woofer Composition |
|
Hybrid aluminum |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
side |
n/a |
Physical Specs |
|
|
| Height |
245.0mm (9.6") |
353.0mm (13.9") |
| Width |
258.0mm (10.2") |
331.0mm (13") |
| Depth |
281.0mm (11.1") |
362.0mm (14.3") |
| Weight |
14.05kg (30.9lbs) |
20.05kg (44.1lbs) |
| Enclosure |
Acoustic Suspension |
Acoustic Suspension |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
2 Years |
| Labor Warranty |
2 Years |
2 Years |