In this review, we will be comparing RP-1400CSW and Sub 3, two Powered Subwoofer speakers from Klipsch and Dynaudio. 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-1400CSW and Dynaudio Sub 3 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.
Drivers
The efficiency of a subwoofer is directly proportional to the total radiating are squared hence the woofer quantity and diameter.Both Klipsch RP-1400CSWand Dynaudio Sub 3 have a single woofer setup however the Klipsch RP-1400CSW's woofer is 14-inch whereas the Dynaudio Sub 3 features a 9.5-inch woofer.
Frequency Response
RP-1400CSW has a frequency range of 15-180 Hz whereas Sub 3 has a frequency range of 22-175 Hz. With a minimum frequency of 15Hz, the RP-1400CSW can go significantly deeper on the low side and provide stronger bass compared to the Sub 3's min frequency of 22Hz.
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-1400CSW and Dynaudio Sub 3 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 Klipsch RP-1400CSW's and Dynaudio Sub 3's external dimensions. Klipsch RP-1400CSW has external dimensions of 444.0 x 421.6 x 421.6mm (17.48inch x 16.6inch x 16.6inch) whereas Dynaudio Sub 3 has external dimensions of 277.0 x 269.0 x 366.0mm (10-7/8 x 10-9/16 x 14-3/8inch).
Klipsch RP-1400CSW is clearly the larger of the two speakers. Its body is 152.6mm wider, 167mm taller and 55.6mm deeper than Dynaudio Sub 3.
Size, drawn to scale
Both speakers and both views share one scale, so everything here is directly comparable. Hover a box for its dimensions.
One scale for both, standing on the same surface and pushed back to the same wall, so the deeper one visibly sticks out further.
Klipsch RP-1400CSW needs about 81% more floor or shelf area. Klipsch RP-1400CSW is 56mm deeper, so it stands that much further out from the wall. Klipsch RP-1400CSW is 167mm 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 Klipsch RP-1400CSW is approximately 1777.5cm2 / 275.5inch2 and base area of the Dynaudio Sub 3 is approximately 984.5cm2 / 152.6inch2. The RP-1400CSW requires 81% more surface area than the Sub 3 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-1400CSW weighs 27.08kg / 59.6lbs and the Dynaudio Sub 3 weighs 10.50kg / 23.1lbs. This makes the RP-1400CSW 158% heavier than the Sub 3.
Here is a comparison of how RP-1400CSW and Sub 3's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
 Woofer Size |
14 inches
vs
9.5 inches
|
Larger woofer |
| Low Frequency Response |
15 Hz
vs
22 Hz
|
Generates deeper bass |
 High Frequency Response |
180 Hz
vs
175 Hz
|
Generates higher frequency |
 Price per pair* |
1100USD
vs
1399USD
|
costs less (*prices may change depending on the seller, location and time) |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
 Height |
277mm
vs
444mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
984cm2
vs
1777cm2
|
Takes less floor space |
Size, drawn to scale
Both subwoofers and both views share one scale, so everything here is directly comparable. Hover a box for its dimensions.
One scale for both, standing on the same floor and pushed back to the same wall, so the bigger one visibly takes more of the room.
Klipsch RP-1400CSW needs about 81% more floor area. Klipsch RP-1400CSW stands 56mm further into the room. Klipsch RP-1400CSW is 167mm taller.
| General |
Klipsch Reference Premiere RP-1400CSW |
Dynaudio Sub 3 |
| Brand |
Klipsch |
Dynaudio |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
500 watts |
300 watts |
| Frequency Response |
15-180 Hz |
22-175 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
500-watt RMS |
300-watt RMS |
| Watts Peak (Max) |
1000-watt RMS |
n/a |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
14" |
9.5" |
| Woofer Composition |
Cerametallic |
Magnesium Silicate Polymer |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
n/a |
50-150Hz and 60Hz/80Hz/FlatHz |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
444.0mm (17.5") |
277.0mm (10.9") |
| Width |
421.6mm (16.6") |
269.0mm (10.6") |
| Depth |
421.6mm (16.6") |
366.0mm (14.4") |
| Weight |
27.08kg (59.6lbs) |
10.50kg (23.1lbs) |
| Enclosure |
Acoustic Suspension |
Acoustic Suspension |
| Finish |
MDF with Vinyl |
n/a |
| Available Colors |
Ebony |
n/a |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
|
3 Years |
| Labor Warranty |
|
3 Years |
Two quite different sizes of subwoofer. Room volume decides this more than anything else on the page: a big driver in a small room is wasted, and a small one in a large room is worked to death.
| Area | Better | Why |
|---|
| Bass depth | A | Klipsch RP-1400CSW goes deeper - 15Hz against 22Hz. Under 20Hz is felt more than heard - the bottom of a pipe organ and the bottom of a film mix. |
| Amplifier power | A | Klipsch RP-1400CSW has the bigger amplifier - 500W against 300W RMS, about 2.2dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | A | Klipsch RP-1400CSW moves more air: 14" against 9.5" is 2.17x the cone area, not the 1.47x the diameters suggest. More area means the same output with less excursion, and less distortion with it. |
| Enclosure | evenly matched | Both are sealed designs, so they roll off in much the same way. |
| Wireless option | depends | Only Klipsch RP-1400CSW offers a wireless link (as a paid option). It decides where the sub can go if you cannot run a cable, and is worth nothing if you can. |
| Cabinet size | depends | Dynaudio Sub 3 is about 65% smaller by volume. In a subwoofer that is a real trade rather than a preference: box volume is how you get output low down without a bigger amplifier. |
| Price | A | Klipsch RP-1400CSW costs less - $1,100 against $1,399, about 21% less. |
A Klipsch RP-1400CSW B Dynaudio Sub 3
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both subwoofers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
Klipsch RP-1400CSW is the easier recommendation: it leads on most of the measured areas and costs less. Take Dynaudio Sub 3 if one of the "depends" rows describes your room. If placement is the constraint - a corner, behind a sofa, under a desk - Dynaudio Sub 3 is the one that will actually go there, and a well-placed small subwoofer beats a badly-placed big one every time.
One thing outweighs everything above: where the subwoofer stands. Room modes can add or remove 10dB or more at a given seat, which is far larger than any difference on this page. Before spending more, try the sub in two or three positions - the crawl test, where you put it in the listening seat and crawl the room to find where the bass sounds best, costs nothing and usually beats an upgrade.