In this review, we will be comparing RP-1400SW and SuperCube 4000, two Powered Subwoofer speakers from Klipsch and Definitive Technology. 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 Klipsch RP-1400SW and DT SuperCube 4000 first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how the Klipsch RP-1400SW and DT SuperCube 4000 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 Klipsch RP-1400SWand DT SuperCube 4000 have a single woofer setup however the Klipsch RP-1400SW's woofer is 14-inch whereas the DT SuperCube 4000 features a 8-inch woofer.
Frequency Response
RP-1400SW has a frequency range of 16-141 Hz whereas SuperCube 4000 has a frequency range of 16-200 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
The Klipsch RP-1400SW has a Bass Reflex type cabinet. 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. On the other hand the DT SuperCube 4000 have Passive Radiator type enclosure. Passive Radiator type subwoofers sports a non-powered cone that moves in response to the main woofer to move air out in order to generate stronger bass in a smaller body compared to ported or sealed 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 Klipsch RP-1400SW's and DT SuperCube 4000's external dimensions. Klipsch RP-1400SW has external dimensions of 542.0 x 508.0 x 653.0mm ( 21-5/16inch x 20inch x 25-11/16inch ) whereas DT SuperCube 4000 has external dimensions of 302.0 x 281.0 x 318.0mm ( 11-7/8 x 11-1/16 x 12-1/2inch) .
Klipsch RP-1400SW is clearly the larger of the two speakers. Its body is 227mm wider, 240mm taller and 335mm deeper than DT SuperCube 4000.
Below you can see the front view size comparison of Klipsch RP-1400SW and DT SuperCube 4000 in scale.
Comparison image of Klipsch RP-1400SW and DT SuperCube 4000 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 Klipsch RP-1400SW is approximately 3317.2cm2 / 514.2inch2 and base area of the DT SuperCube 4000 is approximately 893.6cm2 / 138.5inch2. The RP-1400SW requires 271% more surface area than the SuperCube 4000 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 Klipsch RP-1400SW weighs 38.05kg / 83.7lbs and the DT SuperCube 4000 weighs 11.36kg / 25lbs. This makes the RP-1400SW 235% heavier than the SuperCube 4000.
Here is a comparison of how RP-1400SW and SuperCube 4000's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
 Woofer Size |
14 inches
vs
8 inches
|
Larger woofer |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
 High Frequency Response |
200k Hz
vs
141k Hz
|
Generates higher frequency |
 Height |
302mm
vs
542mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
893cm2 (281x318mm)
vs
3317cm2 (508x653mm)
|
Takes less floor space |
| General |
Klipsch Reference Premiere RP-1400SW |
Definitive Technology SuperCube 4000 |
| Brand |
Klipsch |
Definitive Technology |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
500 watts |
1200 watts |
| Frequency Response |
16-141 Hz |
16-200 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
500-watt RMS |
1200-watt RMS |
| Watts Peak (Max) |
1000-watt RMS |
n/a |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
14" |
8" |
| Woofer Composition |
Cerametallic |
Not given |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
n/a |
40-150 Hz and 40-150 Hz |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
542.0mm (21.3") |
302.0mm (11.9") |
| Width |
508.0mm (20") |
281.0mm (11.1") |
| Depth |
653.0mm (25.7") |
318.0mm (12.5") |
| Weight |
38.05kg (83.7lbs) |
11.36kg (25lbs) |
| Enclosure |
Bass Reflex |
Passive Radiator |
| Finish |
MDF with Vinyl |
n/a |
| Available Colors |
Ebony |
n/a |
| Grille |
Yes |
n/a |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 years |
3 Years |
| Labor Warranty |
5 years |
3 Years |