In this review, we will be comparing RP-1400SW and SPL-150, two Powered Subwoofer speakers by 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 Klipsch RP-1400SW and Klipsch SPL-150 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 Klipsch SPL-150 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 Klipsch SPL-150 have a single woofer setup however the Klipsch RP-1400SW's woofer is 14-inch whereas the Klipsch SPL-150 features a 15-inch woofer.
Frequency Response
RP-1400SW has a frequency range of 16-141 Hz whereas SPL-150 has a frequency range of 18-125 Hz. With a minimum frequency of 16Hz, the RP-1400SW can go slightly deeper then the SPL-150'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
High Frequency
Subwoofer Speakers
Cabinet Type
Both Klipsch RP-1400SW and Klipsch SPL-150 have Bass Reflex type cabinets. 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
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 Klipsch SPL-150'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 Klipsch SPL-150 has external dimensions of 547.0 x 496.0 x 604.0mm ( 21-1/2 x 19-1/2 x 23-3/4inch) .
Klipsch SPL-150 is 12mm narrower and 49mm less deeper than Klipsch RP-1400SW but it is also 5mm taller.
Below you can see the front view size comparison of Klipsch RP-1400SW and Klipsch SPL-150 in scale.
Comparison image of Klipsch RP-1400SW and Klipsch SPL-150 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 Klipsch SPL-150 is approximately 2995.8cm2 / 464.3inch2. The RP-1400SW requires 11% more surface area than the SPL-150 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 Klipsch SPL-150 weighs 34.27kg / 75.4lbs. This makes the RP-1400SW 11% heavier than the SPL-150.
Here is a comparison of how RP-1400SW and SPL-150's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
 Low Frequency Response |
16 Hz
vs
18 Hz
|
Generates deeper bass |
 High Frequency Response |
141k Hz
vs
125k Hz
|
Generates higher frequency |
 Height |
542mm
vs
547mm
|
Easier to fit in smaller spaces |
| Woofer Size |
15 inches
vs
14 inches
|
Larger woofer |
 Base Surface Area |
2995cm2 (496x604mm)
vs
3317cm2 (508x653mm)
|
Takes less floor space |
| General |
Klipsch Reference Premiere RP-1400SW |
Klipsch SPL-150 |
| Brand |
Klipsch |
Klipsch |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
500 watts |
400 watts |
| Frequency Response |
16-141 Hz |
18-125 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
500-watt RMS |
400-watt RMS |
| Watts Peak (Max) |
1000-watt RMS |
n/a |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
14" |
15" |
| Woofer Composition |
Cerametallic |
Cerametallic |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
542.0mm (21.3") |
547.0mm (21.5") |
| Width |
508.0mm (20") |
496.0mm (19.5") |
| Depth |
653.0mm (25.7") |
604.0mm (23.8") |
| Weight |
38.05kg (83.7lbs) |
34.27kg (75.4lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF with Vinyl |
n/a |
| Available Colors |
Ebony |
n/a |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 years |
2 Years |
| Labor Warranty |
5 years |
2 Years |