In this review, we will be comparing MSX Sub 300 and SB-1000 Pro, two Powered Subwoofer speakers from Cambridge Audio and SVS. 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 Cambridge Audio MSX Sub 300 and SVS SB-1000 Pro 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 Cambridge Audio MSX Sub 300and SVS SB-1000 Pro have a single woofer setup however the Cambridge Audio MSX Sub 300's woofer is 8-inch whereas the SVS SB-1000 Pro features a 12-inch woofer.
Frequency Response
MSX Sub 300 has a frequency range of 31-200 Hz whereas SB-1000 Pro has a frequency range of 20-270 Hz. With a minimum frequency of 20Hz, the SB-1000 Pro can go significantly deeper on the low side and provide stronger bass compared to the MSX Sub 300's min frequency of 31Hz.
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 MSX Sub 300
High Frequency
Subwoofer Speakers
Cambridge Audio MSX Sub 300
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 Cambridge Audio MSX Sub 300's and SVS SB-1000 Pro's external dimensions. Cambridge Audio MSX Sub 300 has external dimensions of 312.7 x 266.7 x 311.2mm () whereas SVS SB-1000 Pro has external dimensions of 343.0 x 331.0 x 402.0mm (13-1/2inch x 13inch x 15-13/16inch).
SVS SB-1000 Pro is clearly the larger of the two speakers. Its body is 64.3mm wider, 30.3mm taller and 90.8mm deeper than Cambridge Audio MSX Sub 300.
Size, drawn to scale
Both speakers 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 surface and pushed back to the same wall, so the deeper one visibly sticks out further.
SVS SB-1000 Pro needs about 60% more floor or shelf area. SVS SB-1000 Pro is 91mm deeper, so it stands that much further out from the wall. SVS SB-1000 Pro is 30mm taller.
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 Cambridge Audio MSX Sub 300 is approximately 830.0cm2 / 128.7inch2 and base area of the SVS SB-1000 Pro is approximately 1330.6cm2 / 206.2inch2. The MSX Sub 300 requires 38% less surface area than the SB-1000 Pro which gives it a small advantage 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 Cambridge Audio MSX Sub 300 weighs 7.48kg / 16.5lbs and the SVS SB-1000 Pro weighs 11.82kg / 26lbs. This makes the SB-1000 Pro 58% heavier than the MSX Sub 300.
Here is a comparison of how MSX Sub 300 and SB-1000 Pro's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
Cambridge Audio MSX Sub 300
 Height |
312mm
vs
343mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
830cm2
vs
1330cm2
|
Takes less floor space |
 Price per pair* |
549USD
vs
600USD
|
costs less (*prices may change depending on the seller, location and time) |
 Woofer Size |
12 inches
vs
8 inches
|
Larger woofer |
| Low Frequency Response |
20 Hz
vs
31 Hz
|
Generates deeper bass |
 High Frequency Response |
270 Hz
vs
200 Hz
|
Generates higher frequency |
 App-Based Control |
iOS,Android
vs
None
|
Control the speaker via an app |
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.
SVS SB-1000 Pro needs about 60% more floor area. SVS SB-1000 Pro stands 91mm further into the room. SVS SB-1000 Pro is 30mm taller.
| General |
Cambridge Audio MSX Sub 300 |
SVS SB-1000 Pro |
| Brand |
Cambridge Audio |
SVS |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Frequency Response |
31-200 Hz |
20-270 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
300-watt RMS |
325-watt RMS |
| Watts Peak (Max) |
n/a |
820-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
8" |
12" |
| Woofer Composition |
|
Fiber-composite |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
312.7mm (12.3") |
343.0mm (13.5") |
| Width |
266.7mm (10.5") |
331.0mm (13") |
| Depth |
311.2mm (12.3") |
402.0mm (15.8") |
| Weight |
7.48kg (16.5lbs) |
11.82kg (26lbs) |
| Enclosure |
|
Acoustic Suspension |
| Available Colors |
n/a |
Black,White |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
5 Years |
| Labor Warranty |
2 Years |
5 Years |
A passive radiator 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 | SVS SB-1000 Pro goes deeper - 20Hz against 31Hz. Under 20Hz is felt more than heard - the bottom of a pipe organ and the bottom of a film mix. |
| Amplifier power | evenly matched | Much the same amplifier (300W vs 325W RMS) - under 1dB apart. |
| Driver area | B | SVS SB-1000 Pro moves more air: 12" against 8" is 2.25x the cone area, not the 1.5x the diameters suggest. More area means the same output with less excursion, and less distortion with it. |
| Enclosure | depends | Cambridge Audio MSX Sub 300 is passive radiator - a passive radiator behaves like a port without the pipe noise, and suits a slim cabinet; SVS SB-1000 Pro 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. |
| Cabinet size | depends | Cambridge Audio MSX Sub 300 is about 43% 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 | SVS SB-1000 Pro carries 5 years on parts against 2 years. A subwoofer amplifier works harder than anything else in the system, so this is not a throwaway line. |
| Price | A | Cambridge Audio MSX Sub 300 costs less - $549 against $600, about 9% less. |
A Cambridge Audio MSX Sub 300 B SVS SB-1000 Pro
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?
SVS SB-1000 Pro leads across most of the measured areas for a modest premium, so it is the easier pick if the budget stretches. Cambridge Audio MSX Sub 300 is the one to take if it does not. Films or music? If this is mainly a home cinema, Cambridge Audio MSX Sub 300 will hit harder for the money; if it is mainly for music in a normal-sized room, SVS SB-1000 Pro is usually the easier one to make sound right. If placement is the constraint - a corner, behind a sofa, under a desk - Cambridge Audio MSX Sub 300 is the one that will actually go there, and a well-placed small subwoofer beats a badly-placed big one every time.
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.