In this review, we will be comparing Q SUB80 and KC62, two Powered Subwoofer speakers from Q Acoustics 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 Q Acoustics Q SUB80 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 Q Acoustics Q SUB80 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.Q Acoustics Q SUB80 and KEF KC62 have a totally different setup: the Q Acoustics Q SUB80 features 1 x 8-inch drivers whereas the KC62 features 2 x 6.5-inch drivers.
Frequency Response
Q SUB80 has a frequency range of 36-250 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 Q SUB80's min frequency of 36Hz.
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 Q Acoustics Q SUB80 has a Infinite Baffle type cabinet. On the other hand the KEF KC62 have Acoustic Suspension type enclosure. 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 Q Acoustics Q SUB80's and KEF KC62's external dimensions. Q Acoustics Q SUB80 has external dimensions of 315.0 x 315.0 x 347.0mm ( 12-3/8 x 12-3/8 x 13-11/16inch) 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 ) .
Q Acoustics Q SUB80 is clearly the larger of the two speakers. Its body is 57mm wider, 70mm taller and 66mm 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 Q Acoustics Q SUB80 is approximately 1093.1cm2 / 169.4inch2 and base area of the KEF KC62 is approximately 725.0cm2 / 112.4inch2. The Q SUB80 requires 51% 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 Q Acoustics Q SUB80 weighs 15.00kg / 33lbs and the KEF KC62 weighs 14.05kg / 30.9lbs. This makes the Q SUB80 7% heavier than the KC62.
Here is a comparison of how Q SUB80 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 |
 High Frequency Response |
250k Hz
vs
200k Hz
|
Generates higher frequency |
 Price per pair* |
599USD
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
36 Hz
|
Generates deeper bass |
 Height |
245mm
vs
315mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
725cm2
vs
1093cm2
|
Takes less floor space |
| General |
Q Acoustics Q SUB80 |
KEF KC62 |
| Brand |
Q Acoustics |
KEF |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
200 watts |
1000 watts |
| Frequency Response |
36-250 Hz |
11-200 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
200-watt RMS |
1000-watt RMS |
| Watts Peak (Max) |
400-watt RMS |
n/a |
Drivers |
|
|
| Woofer Quantity |
1 |
2 |
| Woofer Size |
8" |
6.5" |
| Woofer Composition |
Paper composite |
|
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
side |
Physical Specs |
|
|
| Height |
315.0mm (12.4") |
245.0mm (9.6") |
| Width |
315.0mm (12.4") |
258.0mm (10.2") |
| Depth |
347.0mm (13.7") |
281.0mm (11.1") |
| Weight |
15.00kg (33lbs) |
14.05kg (30.9lbs) |
| Enclosure |
Infinite Baffle |
Acoustic Suspension |
| Grille |
Yes |
n/a |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 Years |
2 Years |
| Labor Warranty |
5 Years |
2 Years |