In this review, we will be comparing Bravus II 12D 650W 12" Powered Subwoofer and R-121SW, two Powered Subwoofer speakers from Aperion 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 Aperion Bravus II 12D 650W 12" Powered Subwoofer and Klipsch R-121SW 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 Bravus II 12D 650W 12" Powered Subwooferand Klipsch R-121SW have the same driver set up: Both subwoofers have 1 x 12" drivers.
Frequency Response
Bravus II 12D 650W 12" Powered Subwoofer has a frequency range of 22-350 Hz whereas R-121SW has a frequency range of 28-120 Hz. With a minimum frequency of 22Hz, the Bravus II 12D 650W 12" Powered Subwoofer can go significantly deeper on the low side and provide stronger bass compared to the R-121SW's min frequency of 28Hz.
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 Bravus II 12D 650W 12" Powered Subwoofer
High Frequency
Subwoofer Speakers
Aperion Bravus II 12D 650W 12" Powered Subwoofer
Cabinet Type
The Aperion Bravus II 12D 650W 12" Powered Subwoofer 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 R-121SW 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.
Klipsch R-121SW Port
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 Bravus II 12D 650W 12" Powered Subwoofer's and Klipsch R-121SW's external dimensions. Aperion Bravus II 12D 650W 12" Powered Subwoofer has external dimensions of 431.8 x 393.7 x 393.7mm (17 x 15.5 x 15.5inch) whereas Klipsch R-121SW has external dimensions of 423.0 x 407.0 x 532.0mm (16-5/8inch x 16inch x 20-15/16inch).
Aperion Bravus II 12D 650W 12" Powered Subwoofer is 13.3mm narrower and 138.3mm less deeper than Klipsch R-121SW but it is also 8.8mm taller.
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 Bravus II 12D 650W 12" Powered Subwoofer is approximately 1550.0cm2 / 240.3inch2 and base area of the Klipsch R-121SW is approximately 2165.2cm2 / 335.6inch2. The Bravus II 12D 650W 12" Powered Subwoofer requires 28% less surface area than the R-121SW 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 Aperion Bravus II 12D 650W 12" Powered Subwoofer weighs 23.13kg / 50.9lbs and the Klipsch R-121SW weighs 16.00kg / 35.2lbs. This makes the Bravus II 12D 650W 12" Powered Subwoofer 45% heavier than the R-121SW.
Here is a comparison of how Bravus II 12D 650W 12" Powered Subwoofer and R-121SW's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
Aperion Bravus II 12D 650W 12" Powered Subwoofer
 Low Frequency Response |
22 Hz
vs
28 Hz
|
Generates deeper bass |
 High Frequency Response |
350k Hz
vs
120k Hz
|
Generates higher frequency |
 Base Surface Area |
1550cm2
vs
2165cm2
|
Takes less floor space |
 Height |
423mm
vs
431mm
|
Easier to fit in smaller spaces |
 Price per pair* |
599USD
vs
1199USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Aperion Bravus II 12D 650W 12" Powered Subwoofer |
Klipsch Reference R-121SW |
| Brand |
Aperion |
Klipsch |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
650 watts |
200 watts |
| Impedance |
4 ohms |
n/a |
| Frequency Response |
22-350 Hz |
28-120 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
650-watt RMS |
200-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
12" |
12" |
| Woofer Composition |
|
Spun-Copper TCP |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
431.8mm (17") |
423.0mm (16.7") |
| Width |
393.7mm (15.5") |
407.0mm (16") |
| Depth |
393.7mm (15.5") |
532.0mm (20.9") |
| Weight |
23.13kg (50.9lbs) |
16.00kg (35.2lbs) |
| Enclosure |
Acoustic Suspension |
Bass Reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
|
2 Years |
| Labor Warranty |
|
2 Years |