In this review, we will be comparing A120P and ASW610XP, two Powered Subwoofer speakers from JBL 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 JBL Stage A120P and B&W ASW610XP 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 JBL Stage A120Pand B&W ASW610XP have a single woofer setup however the JBL Stage A120P's woofer is 12-inch whereas the B&W ASW610XP features a 10-inch woofer.
Frequency Response
A120P has a frequency range of 32-150 Hz whereas ASW610XP has a frequency range of 25-140 Hz. With a minimum frequency of 25Hz, the ASW610XP can go significantly deeper on the low side and provide stronger bass compared to the A120P's min frequency of 32Hz.
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
The JBL Stage A120P has a Bass reflex type cabinet. On the other hand the B&W ASW610XP have Acoustic Suspension type enclosure. 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 JBL Stage A120P's and B&W ASW610XP's external dimensions. JBL Stage A120P has external dimensions of 415.0 x 393.0 x 475.0mm (16-5/16 x 15-7/16 x 18-11/16inch) whereas B&W ASW610XP has external dimensions of 337.0 x 328.0 x 410.0mm (13-1/4 x 12-7/8 x 16-1/8inch).
JBL Stage A120P is clearly the larger of the two speakers. Its body is 65mm wider, 78mm taller and 65mm deeper than B&W ASW610XP.
Below you can see the front view size comparison of JBL Stage A120P and B&W ASW610XP in scale.
Comparison image of JBL Stage A120P and B&W ASW610XP 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 JBL Stage A120P is approximately 1866.8cm2 / 289.4inch2 and base area of the B&W ASW610XP is approximately 1344.8cm2 / 208.4inch2. The A120P requires 39% more surface area than the ASW610XP 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 JBL Stage A120P weighs 18.68kg / 41.1lbs and the B&W ASW610XP weighs 18.69kg / 41.1lbs. This makes the ASW610XP 0% heavier than the A120P.
Here is a comparison of how A120P and ASW610XP's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of JBL Stage A120P?
Here are the items that are included inside the box of A120P:
- Powered subwoofer
- Grille
- 6-feet AC power cord
- 4 Spike feet
- Owners Manual
- Warranty Card
- Important Safety Instructions
What's in the Box of B&W ASW610XP?
Here are the items that come with the ASW610XP:
- Powered subwoofer
- Grille
- 6.5-feet AC power cord
- 4 Rubber feet
- 4 Spike feet
- 4 Lock-nuts
- Manual
- Bowers & Wilkins brochure
- Warranty Information
 Woofer Size |
12 inches
vs
10 inches
|
Larger woofer |
 High Frequency Response |
150 Hz
vs
140 Hz
|
Generates higher frequency |
 Price per pair* |
300USD
vs
1799USD
|
costs less (*prices may change depending on the seller, location and time) |
| Low Frequency Response |
25 Hz
vs
32 Hz
|
Generates deeper bass |
 Height |
337mm
vs
415mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1344cm2
vs
1866cm2
|
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.
JBL Stage A120P needs about 39% more floor area. JBL Stage A120P stands 65mm further into the room. JBL Stage A120P is 78mm taller.
| General |
JBL Stage A120P |
Bowers & Wilkins ASW610XP |
| Brand |
JBL |
Bowers Wilkins |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
250 watts |
500 watts |
| Frequency Response |
32-150 Hz |
25-140 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
250-watt RMS |
500-watt RMS |
| Watts Peak (Max) |
500-watt RMS |
n/a |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
12" |
10" |
| Woofer Composition |
Polycellulose |
Paper/Aramid Fiber/Resin |
| Woofer Surround Material |
n/a |
Rubber |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
415.0mm (16.3") |
337.0mm (13.3") |
| Width |
393.0mm (15.5") |
328.0mm (12.9") |
| Depth |
475.0mm (18.7") |
410.0mm (16.1") |
| Weight |
18.68kg (41.1lbs) |
18.69kg (41.1lbs) |
| Enclosure |
Bass reflex |
Acoustic Suspension |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
1 Year |
2 Years |
| Labor Warranty |
1 Year |
2 Years |
A ported subwoofer against a sealed 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 | B&W ASW610XP goes deeper - 25Hz against 32Hz. That gap covers the lowest notes of a five-string bass and a concert bass drum. |
| Amplifier power | B | B&W ASW610XP has the bigger amplifier - 500W against 250W RMS, about 3dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | A | JBL Stage A120P moves more air: 12" against 10" is 1.44x the cone area, not the 1.2x the diameters suggest. More area means the same output with less excursion, and less distortion with it. |
| Enclosure | depends | JBL Stage A120P is ported - a ported box gives more output low down for its size, at the cost of a steeper roll-off below tuning; B&W ASW610XP is sealed - a sealed box rolls off gently and is usually the easier one to integrate in a small or awkward room. Neither is better in the abstract; ported tends to suit films and sealed tends to suit music, and both generalisations have exceptions. |
| Speaker-level inputs | B | B&W ASW610XP takes a speaker-level connection as well as line level. That is what lets it work with an integrated amplifier or a vintage receiver that has no subwoofer output at all. |
| Cabinet size | depends | B&W ASW610XP is about 42% 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 ASW610XP 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 | JBL Stage A120P costs less - $300 against $1,799, about 83% less. |
A JBL Stage A120P B B&W ASW610XP
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 ASW610XP measures better, JBL Stage A120P costs about 83% 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, JBL Stage A120P will hit harder for the money; if it is mainly for music in a normal-sized room, B&W ASW610XP is usually the easier one to make sound right. Check your amplifier first: if it has no subwoofer or preamp output, B&W ASW610XP is the only one of these two you can connect at all.
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.