In this review, we will be comparing KF92 and Sub 6, two Powered Subwoofer speakers from KEF and Dynaudio. 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 KF92 and Dynaudio Sub 6 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 KF92 and Dynaudio Sub 6 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 KF92 and Dynaudio Sub 6 have a totally different setup: the KEF KF92 features 2 x 9-inch drivers whereas the Sub 6 features 1 x 9.5-inch drivers.
Frequency Response
KF92 has a frequency range of 11-200 Hz whereas Sub 6 has a frequency range of 16-230 Hz. With a minimum frequency of 11Hz, the KF92 can go significantly deeper on the low side and provide stronger bass compared to the Sub 6's min frequency of 16Hz.
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 KF92 and Dynaudio Sub 6 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 KF92's and Dynaudio Sub 6's external dimensions. KEF KF92 has external dimensions of 353.0 x 331.0 x 362.0mm ( 13-7/8 x 13 x 14-1/4inch) whereas Dynaudio Sub 6 has external dimensions of 334.0 x 477.0 x 312.0mm ( 13-1/8 x 18-3/4 x 12-1/4inch) .
Dynaudio Sub 6 is 19mm shorter and 50mm less deeper than KEF KF92 but it is also 146mm wider.
Below you can see the front view size comparison of KEF KF92 and Dynaudio Sub 6 in scale.
Comparison image of KEF KF92 and Dynaudio Sub 6 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 KF92 is approximately 1198.2cm2 / 185.7inch2 and base area of the Dynaudio Sub 6 is approximately 1488.2cm2 / 230.7inch2. The KF92 requires 19% less surface area than the Sub 6 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 KF92 weighs 20.05kg / 44.1lbs and the Dynaudio Sub 6 weighs 20.55kg / 45.2lbs. This makes the Sub 6 2% heavier than the KF92.
Here is a comparison of how KF92 and Sub 6'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 KF92?
Here are the items that are included inside the box of KF92:
Powered subwoofer6.5-feet AC power cordSpeaker-level input blockUser ManualImportant Safety InformationWarranty Information
What's in the Box of Dynaudio Sub 6?
Here are the items that come with the Sub 6:
Powered subwoofer2 Grilles6-feet AC power cord4 Rubber feet (pre-installed)4 Spike feet4 Hex-nuts4 Protective discsWrenchOwners ManualQuick Start GuideWarranty Extension CardWarning note
 Number of Woofers |
2
vs
1
|
More woofers |
| Low Frequency Response |
11 Hz
vs
16 Hz
|
Generates deeper bass |
 Base Surface Area |
1198cm2
vs
1488cm2
|
Takes less floor space |
| Woofer Size |
9.5 inches
vs
9 inches
|
Larger woofer |
 High Frequency Response |
230k Hz
vs
200k Hz
|
Generates higher frequency |
 Height |
334mm
vs
353mm
|
Easier to fit in smaller spaces |
| General |
KEF KF92 |
Dynaudio Sub 6 |
| Brand |
KEF |
Dynaudio |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
1000 watts |
500 watts |
| Frequency Response |
11-200 Hz |
16-230 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
1000-watt RMS |
500-watt RMS |
Drivers |
|
|
| Woofer Quantity |
2 |
1 |
| Woofer Size |
9" |
9.5" |
| Woofer Composition |
Hybrid aluminum |
Magnesium Silicate Polymer |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
side |
Physical Specs |
|
|
| Height |
353.0mm (13.9") |
334.0mm (13.1") |
| Width |
331.0mm (13") |
477.0mm (18.8") |
| Depth |
362.0mm (14.3") |
312.0mm (12.3") |
| Weight |
20.05kg (44.1lbs) |
20.55kg (45.2lbs) |
| Enclosure |
Acoustic Suspension |
Acoustic Suspension |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
3 Years |
| Labor Warranty |
2 Years |
3 Years |