In this review, we will be comparing Radius 390 and Minx X201, two Powered Subwoofer speakers from Monitor Audio 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 Monitor Audio Radius 390 and Cambridge Audio Minx X201 first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how the Monitor Audio Radius 390 and Cambridge Audio Minx X201 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 Monitor Audio Radius 390and Cambridge Audio Minx X201 have a single woofer setup however the Monitor Audio Radius 390's woofer is 10-inch whereas the Cambridge Audio Minx X201 features a 6.5-inch woofer.
Frequency Response
Radius 390 has a frequency range of 30-120 Hz whereas Minx X201 has a frequency range of 36-200 Hz. With a minimum frequency of 30Hz, the Radius 390 can go significantly deeper on the low side and provide stronger bass compared to the Minx X201's min frequency of 36Hz.
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
Cambridge Audio Minx X201
High Frequency
Subwoofer Speakers
Cambridge Audio Minx X201
Cabinet Type
Both Monitor Audio Radius 390 and Cambridge Audio Minx X201 have Passive Radiator type cabinets. 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.
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 Monitor Audio Radius 390's and Cambridge Audio Minx X201's external dimensions. Monitor Audio Radius 390 has external dimensions of 348.0 x 331.0 x 385.0mm ( 13-11/16 x 13 x 15-1/8inch) whereas Cambridge Audio Minx X201 has external dimensions of 220.0 x 210.0 x 256.0mm ( 8-5/8 x 8-1/4 x 10-1/16inch) .
Monitor Audio Radius 390 is clearly the larger of the two speakers. Its body is 121mm wider, 128mm taller and 129mm deeper than Cambridge Audio Minx X201.
Below you can see the front view size comparison of Monitor Audio Radius 390 and Cambridge Audio Minx X201 in scale.
Comparison image of Monitor Audio Radius 390 and Cambridge Audio Minx X201 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 Monitor Audio Radius 390 is approximately 1274.4cm2 / 197.5inch2 and base area of the Cambridge Audio Minx X201 is approximately 537.6cm2 / 83.3inch2. The Radius 390 requires 137% more surface area than the Minx X201 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 Monitor Audio Radius 390 weighs 13.77kg / 30.3lbs and the Cambridge Audio Minx X201 weighs 5.00kg / 11lbs. This makes the Radius 390 175% heavier than the Minx X201.
Here is a comparison of how Radius 390 and Minx X201's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
Cambridge Audio Minx X201
What's in the Box of Monitor Audio Radius 390?
Here are the items that are included inside the box of Radius 390:
Powered sub6-feet AC power cord10.75-feet Mono minijack cableOwners ManualImportant Safety Instructions
What's in the Box of Cambridge Audio Minx X201?
Here are the items that come with the Minx X201:
Powered subwooferGrille (installed)6-feet AC power cordInstallation GuideImportant Safety Instructions
 Woofer Size |
10 inches
vs
6.5 inches
|
Larger woofer |
| Low Frequency Response |
30 Hz
vs
36 Hz
|
Generates deeper bass |
 High Frequency Response |
200k Hz
vs
120k Hz
|
Generates higher frequency |
 Passive Radiator |
two 6.5-inch
vs
None
|
Increases the bass performance |
 Height |
220mm
vs
348mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
537cm2
vs
1274cm2
|
Takes less floor space |
 Price per pair* |
449USD
vs
1150USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Monitor Audio Radius 390 |
Cambridge Audio Minx X201 |
| Brand |
Monitor Audio |
Cambridge Audio |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
220 watts |
200 watts |
| Frequency Response |
30-120 Hz |
36-200 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
220-watt RMS |
200-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
6.5" |
| Woofer Composition |
C-CAM |
Aluminum |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
side |
front |
Physical Specs |
|
|
| Height |
348.0mm (13.7") |
220.0mm (8.7") |
| Width |
331.0mm (13") |
210.0mm (8.3") |
| Depth |
385.0mm (15.2") |
256.0mm (10.1") |
| Weight |
13.77kg (30.3lbs) |
5.00kg (11lbs) |
| Enclosure |
Passive Radiator |
Passive Radiator |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
3 Years |
| Labor Warranty |
2 Years |
3 Years |