In this review, we will be comparing Theatrus TS15 Passive 15" Subwoofer and KC62, two Powered Subwoofer speakers from Aperion 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 Aperion Theatrus TS15 Passive 15" Subwoofer and KEF KC62 first before getting into our more detailed comparison.
The sections below take each area in turn: driver and amplifier, frequency response, physical size and connectivity.
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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.Aperion Theatrus TS15 Passive 15" Subwoofer and KEF KC62 have a totally different setup: the Aperion Theatrus TS15 Passive 15" Subwoofer features 1 x 15-inch drivers whereas the KC62 features 2 x 6.5-inch drivers.
Frequency Response
Theatrus TS15 Passive 15" Subwoofer has a frequency range of 18-400 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 Theatrus TS15 Passive 15" Subwoofer's min frequency of 18Hz.
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
Aperion Theatrus TS15 Passive 15" Subwoofer
High Frequency
Subwoofer Speakers
Aperion Theatrus TS15 Passive 15" Subwoofer
Cabinet Type
Both Aperion Theatrus TS15 Passive 15" Subwoofer and KEF KC62 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
The size of a speaker can sometimes be an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare Aperion Theatrus TS15 Passive 15" Subwoofer's and KEF KC62's external dimensions. Aperion Theatrus TS15 Passive 15" Subwoofer has external dimensions of 500.4 x 500.4 x 401.3mm (19.7 x 19.7 x 15.8inch) 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).
Aperion Theatrus TS15 Passive 15" Subwoofer is clearly the larger of the two speakers. Its body is 242.4mm wider, 255.4mm taller and 120.3mm 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 Aperion Theatrus TS15 Passive 15" Subwoofer is approximately 2008.1cm2 / 311.3inch2 and base area of the KEF KC62 is approximately 725.0cm2 / 112.4inch2. The Theatrus TS15 Passive 15" Subwoofer requires 177% 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 Aperion Theatrus TS15 Passive 15" Subwoofer weighs 35.02kg / 77lbs and the KEF KC62 weighs 14.05kg / 30.9lbs. This makes the Theatrus TS15 Passive 15" Subwoofer 149% heavier than the KC62.
Here is a comparison of how Theatrus TS15 Passive 15" Subwoofer and KC62's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
Aperion Theatrus TS15 Passive 15" Subwoofer
 Woofer Size |
15 inches
vs
6.5 inches
|
Larger woofer |
 High Frequency Response |
400k Hz
vs
200k Hz
|
Generates higher frequency |
 Price per pair* |
1449USD
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
18 Hz
|
Generates deeper bass |
 Height |
245mm
vs
500mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
725cm2
vs
2008cm2
|
Takes less floor space |
| General |
Aperion Theatrus TS15 Passive 15" Subwoofer |
KEF KC62 |
| Brand |
Aperion |
KEF |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Sensitivity |
88 dB |
n/a |
| Impedance |
4 ohms |
n/a |
| Frequency Response |
18-400 Hz |
11-200 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
n/a |
1000-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
2 |
| Woofer Size |
15" |
6.5" |
| Woofer Composition |
|
|
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
side |
Physical Specs |
|
|
| Height |
500.4mm (19.7") |
245.0mm (9.6") |
| Width |
500.4mm (19.7") |
258.0mm (10.2") |
| Depth |
401.3mm (15.8") |
281.0mm (11.1") |
| Weight |
35.02kg (77lbs) |
14.05kg (30.9lbs) |
| Enclosure |
Acoustic Suspension |
Acoustic Suspension |
| Grille |
Yes |
n/a |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
|
2 Years |
| Labor Warranty |
|
2 Years |