In this review, we will be comparing Muro SUB2020 and DB4S, two Powered Subwoofer speakers from ELAC and Bowers Wilkins. 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 ELAC Muro SUB2020 and B&W DB4S 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.ELAC Muro SUB2020and B&W DB4S have the same driver set up: Both subwoofers have 1 x 10" drivers.
Frequency Response
Muro SUB2020 has a frequency range of 28-200 Hz whereas DB4S has a frequency range of 10-350 Hz. With a minimum frequency of 10Hz, the DB4S can go significantly deeper on the low side and provide stronger bass compared to the Muro SUB2020'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
High Frequency
Subwoofer Speakers
Cabinet Type
Both ELAC Muro SUB2020 and B&W DB4S 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 ELAC Muro SUB2020's and B&W DB4S's external dimensions. ELAC Muro SUB2020 has external dimensions of 399.0 x 185.0 x 515.0mm (15-11/16 x 7-1/4 x 20-1/4inch) whereas B&W DB4S has external dimensions of 375.0 x 362.0 x 434.0mm (14-3/4 x 14-1/4 x 17-1/16inch).
B&W DB4S is 24mm shorter and 81mm less deeper than ELAC Muro SUB2020 but it is also 177mm wider.
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 ELAC Muro SUB2020 is approximately 952.8cm2 / 147.7inch2 and base area of the B&W DB4S is approximately 1571.1cm2 / 243.5inch2. The Muro SUB2020 requires 39% less surface area than the DB4S 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 ELAC Muro SUB2020 weighs 12.73kg / 28lbs and the B&W DB4S weighs 26.05kg / 57.3lbs. This makes the DB4S 105% heavier than the Muro SUB2020.
Here is a comparison of how Muro SUB2020 and DB4S's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of ELAC Muro SUB2020?
Here are the items that are included inside the box of Muro SUB2020:
- Powered subwoofer
- 8-feet AC power cord
- 4 Cone feet
- 2 Brackets
- 2 Machine screws
- 2 Wood screws
- 2 Washers
- 2 Wall anchors
- Operating Instructions
What's in the Box of B&W DB4S?
Here are the items that come with the DB4S:
- Powered subwoofer
- Grille
- 6.5-feet AC power cord
- 4 Decoupling feet
- 4 Rubber feet
- 4 Spike feet
- 4 Lock-nuts
- Cleaning cloth
- Quickstart Guide
- Bowers & Wilkins brochure
- Warranty Information
- Cleaning cloth instructions
 Base Surface Area |
952cm2
vs
1571cm2
|
Takes less floor space |
 Price per pair* |
1000USD
vs
2199USD
|
costs less (*prices may change depending on the seller, location and time) |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
 Low Frequency Response |
10 Hz
vs
28 Hz
|
Generates deeper bass |
 High Frequency Response |
350 Hz
vs
200 Hz
|
Generates higher frequency |
 Height |
375mm
vs
399mm
|
Easier to fit in smaller spaces |
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.
B&W DB4S needs about 65% more floor area. ELAC Muro SUB2020 stands 81mm further into the room. ELAC Muro SUB2020 is 24mm taller.
| General |
ELAC Muro SUB2020 |
Bowers & Wilkins DB4S |
| Brand |
ELAC |
Bowers Wilkins |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
200 watts |
1000 watts |
| Frequency Response |
28-200 Hz |
10-350 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
200-watt RMS |
n/a |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
10" |
| Woofer Composition |
Woven Cellulose Fiber |
Aerofoil |
| Woofer Surround Material |
n/a |
Rubber |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
side or bottom |
front |
Physical Specs |
|
|
| Height |
399.0mm (15.7") |
375.0mm (14.8") |
| Width |
185.0mm (7.3") |
362.0mm (14.3") |
| Depth |
515.0mm (20.3") |
434.0mm (17.1") |
| Weight |
12.73kg (28lbs) |
26.05kg (57.3lbs) |
| Enclosure |
Acoustic Suspension |
Acoustic Suspension |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
1 Year |
2 Years |
| Labor Warranty |
1 Year |
2 Years |
Different price classes - B&W DB4S costs roughly 2.2x what ELAC Muro SUB2020 does. Before paying it, read the note below about two smaller subwoofers.
| Area | Better | Why |
|---|
| Bass depth | B | B&W DB4S goes deeper - 10Hz against 28Hz. Under 20Hz is felt more than heard - the bottom of a pipe organ and the bottom of a film mix. |
| Amplifier power | B | B&W DB4S has the bigger amplifier - 1000W against 200W RMS, about 7dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | evenly matched | Near-identical radiating area (10" against 10"). |
| Enclosure | evenly matched | Both are sealed designs, so they roll off in much the same way. |
| Setup and tuning | evenly matched | The same tuning tools on both (app control). |
| Wireless option | depends | Only ELAC Muro SUB2020 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. |
| Driver placement | depends | ELAC Muro SUB2020 fires side or down and B&W DB4S fires front. A down-firing driver is more forgiving of a grille-less look and of a hard floor; a front-firing one is the safer choice on a thick carpet or a suspended timber floor. |
| Cabinet size | depends | ELAC Muro SUB2020 is about 35% 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 | B&W DB4S carries 2 years on parts against 1 years. A subwoofer amplifier works harder than anything else in the system, so this is not a throwaway line. |
| Price | A | ELAC Muro SUB2020 costs less - $1,000 against $2,199, about 55% less. |
A ELAC Muro SUB2020 B B&W DB4S
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: B&W DB4S measures better, ELAC Muro SUB2020 costs about 55% less. In a normal room, placement will make a bigger difference than the gap between these two. Two small subwoofers beat one big one in most rooms - a pair evens out the room modes in a way no single box can, whatever its specs. At $1,000 each, two ELAC Muro SUB2020 cost about $2,000 against $2,199 for one of the other, which is worth a thought. If placement is the constraint - a corner, behind a sofa, under a desk - ELAC Muro SUB2020 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.