In this review, we will be comparing Sub 6 and SX-120, two Powered Subwoofer speakers from Dynaudio and Cambridge Audio. 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 Dynaudio Sub 6 and Cambridge Audio SX-120 first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how the Dynaudio Sub 6 and Cambridge Audio SX-120 compare and hopefully end up with enough arguments to decide which one of these subwoofers is the better choice for you.
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Drivers
The efficiency of a subwoofer is directly proportional to the total radiating are squared hence the woofer quantity and diameter.Both Dynaudio Sub 6and Cambridge Audio SX-120 have a single woofer setup however the Dynaudio Sub 6's woofer is 9.5-inch whereas the Cambridge Audio SX-120 features a 8-inch woofer.
Frequency Response
Sub 6 has a frequency range of 16-230 Hz whereas SX-120 has a frequency range of 34-150 Hz. With a minimum frequency of 16Hz, the Sub 6 can go significantly deeper on the low side and provide stronger bass compared to the SX-120's min frequency of 34Hz.
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 Dynaudio Sub 6 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 Cambridge Audio SX-120 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
Size of a speaker can sometimes become an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare Dynaudio Sub 6's and Cambridge Audio SX-120's external dimensions. Dynaudio Sub 6 has external dimensions of 334.0 x 477.0 x 312.0mm ( 13-1/8 x 18-3/4 x 12-1/4inch) whereas Cambridge Audio SX-120 has external dimensions of 296.0 x 297.0 x 350.0mm ( 11-5/8 x 11-11/16 x 13-3/4inch) .
Cambridge Audio SX-120 is 180mm narrower and 38mm shorter than Dynaudio Sub 6 but it is also 38mm deeper.
Below you can see the front view size comparison of Dynaudio Sub 6 and Cambridge Audio SX-120 in scale.
Comparison image of Dynaudio Sub 6 and Cambridge Audio SX-120 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 Dynaudio Sub 6 is approximately 1488.2cm2 / 230.7inch2 and base area of the Cambridge Audio SX-120 is approximately 1039.5cm2 / 161.1inch2. The Sub 6 requires 43% more surface area than the SX-120 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 Dynaudio Sub 6 weighs 20.55kg / 45.2lbs and the Cambridge Audio SX-120 weighs 7.73kg / 17lbs. This makes the Sub 6 166% heavier than the SX-120.
Here is a comparison of how Sub 6 and SX-120's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of Dynaudio Sub 6?
Here are the items that are included inside the box of Sub 6:
Powered subwoofer2 Grilles6-feet AC power cord4 Rubber feet (pre-installed)4 Spike feet4 Hex-nuts4 Protective discsWrenchOwners ManualQuick Start GuideWarranty Extension CardWarning note
What's in the Box of Cambridge Audio SX-120?
Here are the items that come with the SX-120:
Powered subwoofer6-feet AC power cordGrille4 Spiked feetInstallation GuideImportant Safety Instructions
 Woofer Size |
9.5 inches
vs
8 inches
|
Larger woofer |
| Low Frequency Response |
16 Hz
vs
34 Hz
|
Generates deeper bass |
 High Frequency Response |
230k Hz
vs
150k Hz
|
Generates higher frequency |
 Height |
296mm
vs
334mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1039cm2
vs
1488cm2
|
Takes less floor space |
| General |
Dynaudio Sub 6 |
Cambridge Audio SX-120 |
| Brand |
Dynaudio |
Cambridge Audio |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
500 watts |
70 watts |
| Frequency Response |
16-230 Hz |
34-150 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
500-watt RMS |
70-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
9.5" |
8" |
| Woofer Composition |
Magnesium Silicate Polymer |
Treated Paper |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
side |
front |
Physical Specs |
|
|
| Height |
334.0mm (13.1") |
296.0mm (11.7") |
| Width |
477.0mm (18.8") |
297.0mm (11.7") |
| Depth |
312.0mm (12.3") |
350.0mm (13.8") |
| Weight |
20.55kg (45.2lbs) |
7.73kg (17lbs) |
| Enclosure |
Acoustic Suspension |
Bass Reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
3 Years |
3 Years |
| Labor Warranty |
3 Years |
3 Years |