In this review, we will be comparing KC62 and SPL-120, two Powered Subwoofer speakers from KEF and Klipsch. 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 Klipsch SPL-120 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.KEF KC62 and Klipsch SPL-120 have a totally different setup: the KEF KC62 features 2 x 6.5-inch drivers whereas the SPL-120 features 1 x 12-inch drivers.
Frequency Response
KC62 has a frequency range of 11-200 Hz whereas SPL-120 has a frequency range of 24-125 Hz. With a minimum frequency of 11Hz, the KC62 can go significantly deeper on the low side and provide stronger bass compared to the SPL-120's min frequency of 24Hz.
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 Klipsch SPL-120 have Bass Reflex type enclosure. Bass Reflex type subwoofers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed 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 KEF KC62's and Klipsch SPL-120'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 Klipsch SPL-120 has external dimensions of 450.0 x 375.0 x 540.0mm (17-11/16 x 14-3/4 x 21-1/4inch).
Klipsch SPL-120 is clearly the larger of the two speakers. Its body is 117mm wider, 205mm taller and 259mm deeper than KEF KC62.
Below you can see the front view size comparison of KEF KC62 and Klipsch SPL-120 in scale.
Comparison image of KEF KC62 and Klipsch SPL-120 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 Klipsch SPL-120 is approximately 2025.0cm2 / 313.9inch2. The KC62 requires 64% less surface area than the SPL-120 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 Klipsch SPL-120 weighs 20.45kg / 45lbs. This makes the SPL-120 46% heavier than the KC62.
Here is a comparison of how KC62 and SPL-120'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 subwoofer
- 6.5-feet AC power cord
- Speaker-level input block
- User Manual
- Important Safety Information
- Warranty Information
What's in the Box of Klipsch SPL-120?
Here are the items that come with the SPL-120:
- Powered sub
- Grille
- 6.5-feet AC power cord
- User Manual
- Important Safety Instructions
- Warranty Information
 Number of Woofers |
2
vs
1
|
More woofers |
| Low Frequency Response |
11 Hz
vs
24 Hz
|
Generates deeper bass |
 High Frequency Response |
200k Hz
vs
125k Hz
|
Generates higher frequency |
 Height |
245mm
vs
450mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
725cm2
vs
2025cm2
|
Takes less floor space |
| Woofer Size |
12 inches
vs
6.5 inches
|
Larger woofer |
 Price per pair* |
499USD
vs
1500USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
KEF KC62 |
Klipsch SPL-120 |
| Brand |
KEF |
Klipsch |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
1000 watts |
300 watts |
| Frequency Response |
11-200 Hz |
24-125 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
1000-watt RMS |
300-watt RMS |
| Watts Peak (Max) |
n/a |
600-watt RMS |
Drivers |
|
|
| Woofer Quantity |
2 |
1 |
| Woofer Size |
6.5" |
12" |
| Woofer Composition |
|
Cerametallic |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
side |
front |
Physical Specs |
|
|
| Height |
245.0mm (9.6") |
450.0mm (17.7") |
| Width |
258.0mm (10.2") |
375.0mm (14.8") |
| Depth |
281.0mm (11.1") |
540.0mm (21.3") |
| Weight |
14.05kg (30.9lbs) |
20.45kg (45lbs) |
| Enclosure |
Acoustic Suspension |
Bass Reflex |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
2 Years |
| Labor Warranty |
2 Years |
2 Years |