In this review, we will be comparing KUBE 10b and Debut 2.0 SUB3010, two Powered Subwoofer speakers from KEF and ELAC. 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 KEF KUBE 10b and ELAC Debut 2.0 SUB3010 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.
**This post contains affiliate links, and we will be compensated if you make a purchase after clicking through our links. As an Amazon Associate I earn from qualifying purchases.
Drivers
The efficiency of a subwoofer is directly proportional to the total radiating are squared hence the woofer quantity and diameter.KEF KUBE 10band ELAC Debut 2.0 SUB3010 have the same driver set up: Both subwoofers have 1 x 10" drivers.
Frequency Response
KUBE 10b has a frequency range of 24-140 Hz whereas Debut 2.0 SUB3010 has a frequency range of 28-150 Hz. With a minimum frequency of 24Hz, the KUBE 10b can go slightly deeper then the Debut 2.0 SUB3010'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
The KEF KUBE 10b has a Acoustic Suspension type cabinet. 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. On the other hand the ELAC Debut 2.0 SUB3010 have Passive radiator type enclosure.
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 KEF KUBE 10b's and ELAC Debut 2.0 SUB3010's external dimensions. KEF KUBE 10b has external dimensions of 372.0 x 356.0 x 397.0mm (14-5/8 x 14 x 15-5/8inch) whereas ELAC Debut 2.0 SUB3010 has external dimensions of 374.0 x 355.0 x 383.0mm (14-11/16 x 13-15/16 x 15-1/16inch).
ELAC Debut 2.0 SUB3010 is 1mm narrower and 14mm less deeper than KEF KUBE 10b but it is also 2mm taller.
Below you can see the front view size comparison of KEF KUBE 10b and ELAC Debut 2.0 SUB3010 in scale.
Comparison image of KEF KUBE 10b and ELAC Debut 2.0 SUB3010 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 KEF KUBE 10b is approximately 1413.3cm2 / 219.1inch2 and base area of the ELAC Debut 2.0 SUB3010 is approximately 1359.7cm2 / 210.8inch2. The KUBE 10b requires 4% more surface area than the Debut 2.0 SUB3010 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 KEF KUBE 10b weighs 17.50kg / 38.5lbs and the ELAC Debut 2.0 SUB3010 weighs 14.59kg / 32.1lbs. This makes the KUBE 10b 20% heavier than the Debut 2.0 SUB3010.
Here is a comparison of how KUBE 10b and Debut 2.0 SUB3010's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of KEF KUBE 10b?
Here are the items that are included inside the box of KUBE 10b:
- Powered subwoofer
- 6.5-feet AC power cord
- Speaker-level input block
- User Manual
- Important Safety Information
- Warranty Information
What's in the Box of ELAC Debut 2.0 SUB3010?
Here are the items that come with the Debut 2.0 SUB3010:
- Powered subwoofer
- 9-feet AC power cord
- 4 Spikes
- 4 Hex-nuts
- Operating Instructions
 Low Frequency Response |
24 Hz
vs
28 Hz
|
Generates deeper bass |
 Height |
372mm
vs
374mm
|
Easier to fit in smaller spaces |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
 High Frequency Response |
150 Hz
vs
140 Hz
|
Generates higher frequency |
 App-Based Control |
iOS,Android
vs
None
|
Control the speaker via an app |
 Base Surface Area |
1359cm2
vs
1413cm2
|
Takes less floor space |
 Price per pair* |
650USD
vs
750USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
KEF KUBE 10b |
ELAC Debut 2.0 SUB3010 |
| Brand |
KEF |
ELAC |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
300 watts |
200 watts |
| Frequency Response |
24-140 Hz |
28-150 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
300-watt RMS |
200-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
10" |
| Woofer Composition |
|
Doped Paper |
| Woofer Surround Material |
n/a |
Rubber |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
40-140 Hz |
n/a |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
372.0mm (14.6") |
374.0mm (14.7") |
| Width |
356.0mm (14") |
355.0mm (14") |
| Depth |
397.0mm (15.6") |
383.0mm (15.1") |
| Weight |
17.50kg (38.5lbs) |
14.59kg (32.1lbs) |
| Enclosure |
Acoustic Suspension |
Passive radiator |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
1 Year |
| Labor Warranty |
2 Years |
1 Year |
A sealed subwoofer against a passive radiator 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 | KEF KUBE 10b goes deeper - 24Hz against 28Hz. A real difference, though most music has little content below 28Hz. |
| Amplifier power | A | KEF KUBE 10b has the bigger amplifier - 300W against 200W RMS, about 1.8dB 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 | depends | KEF KUBE 10b is sealed - a sealed box rolls off gently and is usually the easier one to integrate in a small or awkward room; ELAC Debut 2.0 SUB3010 is passive radiator - a passive radiator behaves like a port without the pipe noise, and suits a slim cabinet. Neither is better in the abstract; ported tends to suit films and sealed tends to suit music, and both generalisations have exceptions. |
| Wireless option | depends | Only KEF KUBE 10b 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. |
| Warranty | A | KEF KUBE 10b 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 | B | ELAC Debut 2.0 SUB3010 costs less - $650 against $750, about 13% less. |
A KEF KUBE 10b B ELAC Debut 2.0 SUB3010
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?
KEF KUBE 10b leads across most of the measured areas for a modest premium, so it is the easier pick if the budget stretches. ELAC Debut 2.0 SUB3010 is the one to take if it does not. Films or music? If this is mainly a home cinema, ELAC Debut 2.0 SUB3010 will hit harder for the money; if it is mainly for music in a normal-sized room, KEF KUBE 10b is usually the easier one to make sound right.
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.