In this review, we will be comparing ForceField 4 and Sub Air, two Powered Subwoofer speakers from GoldenEar and Focal. 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 GoldenEar ForceField 4 and Focal Sub Air 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 GoldenEar ForceField 4and Focal Sub Air have a single woofer setup however the GoldenEar ForceField 4's woofer is 10-inch whereas the Focal Sub Air features a 8-inch woofer.
Frequency Response
ForceField 4 has a frequency range of 14-250 Hz whereas Sub Air has a frequency range of 40-200 Hz. With a minimum frequency of 14Hz, the ForceField 4 can go significantly deeper on the low side and provide stronger bass compared to the Sub Air's min frequency of 40Hz.
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 GoldenEar ForceField 4 has a Passive Radiator type cabinet. Passive Radiator type subwoofers sports a non-powered cone that moves in response to the main woofer to move air out in order to generate stronger bass in a smaller body compared to ported or sealed designs. On the other hand the Focal Sub Air 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.
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 GoldenEar ForceField 4's and Focal Sub Air's external dimensions. GoldenEar ForceField 4 has external dimensions of 331.0 x 340.0 x 482.0mm (13inch x 13-3/8inch x 18-15/16inch) whereas Focal Sub Air has external dimensions of 410.0 x 362.0 x 162.0mm (16-1/8 x 14-1/4 x 6-3/8inch).
GoldenEar ForceField 4 is 22mm narrower and 79mm shorter than Focal Sub Air but it is also 320mm deeper.
Below you can see the front view size comparison of GoldenEar ForceField 4 and Focal Sub Air in scale.
Comparison image of GoldenEar ForceField 4 and Focal Sub Air 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 GoldenEar ForceField 4 is approximately 1638.8cm2 / 254.0inch2 and base area of the Focal Sub Air is approximately 586.4cm2 / 90.9inch2. The ForceField 4 requires 179% more surface area than the Sub Air 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 GoldenEar ForceField 4 weighs 14.55kg / 32lbs and the Focal Sub Air weighs 7.73kg / 17lbs. This makes the ForceField 4 88% heavier than the Sub Air.
Here is a comparison of how ForceField 4 and Sub Air's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of GoldenEar ForceField 4?
Here are the items that are included inside the box of ForceField 4:
- Powered Subwoofer
- 10-feet AC power cord
- Owners Manual
What's in the Box of Focal Sub Air?
Here are the items that come with the Sub Air:
- Wireless powered subwoofer
- Wireless transmitter
- AC power adapter (attached 6-feet DC cord)
- AC power plug insert (2-prong)
- 8-feet AC power cord
- 4 Rubber feet
- 2 Brackets
- Four M4 x 10mm machine screws
- Four M4 x 17mm machine screws
- 4 Wood-screws
- 4 Wall-anchors
- User Manual
 Woofer Size |
10 inches
vs
8 inches
|
Larger woofer |
| Low Frequency Response |
14 Hz
vs
40 Hz
|
Generates deeper bass |
 High Frequency Response |
250 Hz
vs
200 Hz
|
Generates higher frequency |
 Height |
331mm
vs
410mm
|
Easier to fit in smaller spaces |
 Price per pair* |
799USD
vs
1299USD
|
costs less (*prices may change depending on the seller, location and time) |
 Base Surface Area |
586cm2
vs
1638cm2
|
Takes less floor space |
 Wireless Operation |
Yes
vs
No
|
Connect your subwoofer to your system wireless |
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.
GoldenEar ForceField 4 needs about 179% more floor area. GoldenEar ForceField 4 stands 320mm further into the room. Focal Sub Air is 79mm taller.
| General |
GoldenEar ForceField 4 |
Focal Sub Air |
| Brand |
GoldenEar |
Focal |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
1200 watts |
110 watts |
| Frequency Response |
14-250 Hz |
40-200 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
1200-watt RMS |
110-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
8" |
| Woofer Composition |
Polypropylene |
Cellulose Pulp |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
331.0mm (13") |
410.0mm (16.1") |
| Width |
340.0mm (13.4") |
362.0mm (14.3") |
| Depth |
482.0mm (19") |
162.0mm (6.4") |
| Weight |
14.55kg (32lbs) |
7.73kg (17lbs) |
| Enclosure |
Passive Radiator |
Bass Reflex |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
3 Years |
3 Years |
| Labor Warranty |
3 Years |
3 Years |
A passive radiator 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 | A | GoldenEar ForceField 4 goes deeper - 14Hz against 40Hz. Under 20Hz is felt more than heard - the bottom of a pipe organ and the bottom of a film mix. |
| Amplifier power | A | GoldenEar ForceField 4 has the bigger amplifier - 1200W against 110W RMS, about 10.4dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | A | GoldenEar ForceField 4 moves more air: 10" against 8" is 1.56x the cone area, not the 1.25x the diameters suggest. More area means the same output with less excursion, and less distortion with it. |
| Enclosure | depends | GoldenEar ForceField 4 is passive radiator - a passive radiator behaves like a port without the pipe noise, and suits a slim cabinet; Focal Sub Air 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. |
| Speaker-level inputs | A | GoldenEar ForceField 4 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. |
| Wireless option | depends | Only Focal Sub Air offers a wireless link. It decides where the sub can go if you cannot run a cable, and is worth nothing if you can. |
| Phase control | B | Focal Sub Air has a phase control. Without one, the only way to fix a cancellation at the crossover is to move the box. |
| Cabinet size | depends | Focal Sub Air is about 56% 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 | GoldenEar ForceField 4 costs less - $799 against $1,299, about 38% less. |
A GoldenEar ForceField 4 B Focal Sub Air
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?
GoldenEar ForceField 4 is the easier recommendation: it leads on most of the measured areas and costs less. Take Focal Sub Air if one of the "depends" rows describes your room. Check your amplifier first: if it has no subwoofer or preamp output, GoldenEar ForceField 4 is the only one of these two you can connect at all. 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 $799 each, two GoldenEar ForceField 4 cost about $1,598 against $1,299 for one of the other, which is worth a thought.
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.