In this review, we will be comparing Dynamo Foundation 12 and RP-1200SW, two Powered Subwoofer speakers from MartinLogan 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 MartinLogan Dynamo Foundation 12 and Klipsch RP-1200SW 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.MartinLogan Dynamo Foundation 12and Klipsch RP-1200SW have the same driver set up: Both subwoofers have 1 x 12" drivers.
Frequency Response
Dynamo Foundation 12 has a frequency range of 24-200 Hz whereas RP-1200SW has a frequency range of 16.5-138 Hz. With a minimum frequency of 17Hz, the RP-1200SW can go significantly deeper on the low side and provide stronger bass compared to the Dynamo Foundation 12'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
MartinLogan Dynamo Foundation 12
High Frequency
Subwoofer Speakers
MartinLogan Dynamo Foundation 12
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 MartinLogan Dynamo Foundation 12's and Klipsch RP-1200SW's external dimensions. MartinLogan Dynamo Foundation 12 has external dimensions of 404.8 x 357.2 x 408.0mm () whereas Klipsch RP-1200SW has external dimensions of 482.0 x 432.0 x 659.0mm (18-15/16inch x 17inch x 25-15/16inch).
Klipsch RP-1200SW is clearly the larger of the two speakers. Its body is 74.8mm wider, 77.2mm taller and 251mm deeper than MartinLogan Dynamo Foundation 12.
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-1200SW needs about 95% more floor or shelf area. Klipsch RP-1200SW is 251mm deeper, so it stands that much further out from the wall. Klipsch RP-1200SW is 77mm 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 MartinLogan Dynamo Foundation 12 is approximately 1457.4cm2 / 225.9inch2 and base area of the Klipsch RP-1200SW is approximately 2846.9cm2 / 441.3inch2. The Dynamo Foundation 12 requires 49% less surface area than the RP-1200SW 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 MartinLogan Dynamo Foundation 12 weighs 13.20kg / 29lbs and the Klipsch RP-1200SW weighs 31.18kg / 68.6lbs. This makes the RP-1200SW 136% heavier than the Dynamo Foundation 12.
Here is a comparison of how Dynamo Foundation 12 and RP-1200SW's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
MartinLogan Dynamo Foundation 12
 High Frequency Response |
200 Hz
vs
138 Hz
|
Generates higher frequency |
 Height |
404mm
vs
482mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1457cm2
vs
2846cm2
|
Takes less floor space |
 Price per pair* |
800USD
vs
1100USD
|
costs less (*prices may change depending on the seller, location and time) |
 Low Frequency Response |
17 Hz
vs
24 Hz
|
Generates deeper bass |
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-1200SW needs about 95% more floor area. Klipsch RP-1200SW stands 251mm further into the room. Klipsch RP-1200SW is 77mm taller.
| General |
MartinLogan Dynamo Foundation 12 |
Klipsch Reference Premiere RP-1200SW |
| Brand |
MartinLogan |
Klipsch |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Frequency Response |
24-200 Hz |
16.5-138 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
350-watt RMS |
400-watt RMS |
| Watts Peak (Max) |
700-watt RMS |
800-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
12" |
12" |
| Woofer Composition |
|
Cerametallic |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
404.8mm (15.9") |
482.0mm (19") |
| Width |
357.2mm (14.1") |
432.0mm (17") |
| Depth |
408.0mm (16.1") |
659.0mm (25.9") |
| Weight |
13.20kg (29lbs) |
31.18kg (68.6lbs) |
| Enclosure |
|
Bass Reflex |
| Finish |
n/a |
MDF with Vinyl |
| Available Colors |
n/a |
Ebony |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
3 Yrs w/ Registration |
5 years |
| Labor Warranty |
3 Yrs w/ Registration |
5 years |
A sealed subwoofer against a ported one. That is the most consequential line on this page: it decides how the bass rolls off, how it behaves in a small room, and how much output you get for the size of the box.
| Area | Better | Why |
|---|
| Bass depth | B | Klipsch RP-1200SW goes deeper - 17Hz against 24Hz. Under 20Hz is felt more than heard - the bottom of a pipe organ and the bottom of a film mix. |
| Amplifier power | evenly matched | Much the same amplifier (350W vs 400W RMS) - under 1dB apart. |
| Driver area | evenly matched | Near-identical radiating area (12" against 12"). |
| Enclosure | depends | MartinLogan Dynamo Foundation 12 is sealed - a sealed box rolls off gently and is usually the easier one to integrate in a small or awkward room; Klipsch RP-1200SW is ported - a ported box gives more output low down for its size, at the cost of a steeper roll-off below tuning. Neither is better in the abstract; ported tends to suit films and sealed tends to suit music, and both generalisations have exceptions. |
| Cabinet size | depends | MartinLogan Dynamo Foundation 12 is about 57% 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. |
| Warranty | B | Klipsch RP-1200SW carries 5 years on parts against 3 years. A subwoofer amplifier works harder than anything else in the system, so this is not a throwaway line. |
| Price | A | MartinLogan Dynamo Foundation 12 costs less - $800 against $1,100, about 27% less. |
A MartinLogan Dynamo Foundation 12 B Klipsch RP-1200SW
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?
The usual trade-off: Klipsch RP-1200SW measures better, MartinLogan Dynamo Foundation 12 costs about 27% less. In a normal room, placement will make a bigger difference than the gap between these two. Films or music? If this is mainly a home cinema, Klipsch RP-1200SW will hit harder for the money; if it is mainly for music in a normal-sized room, MartinLogan Dynamo Foundation 12 is usually the easier one to make sound right. If placement is the constraint - a corner, behind a sofa, under a desk - MartinLogan Dynamo Foundation 12 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.