In this review, we will be comparing SX-70 and Bronze C150, two Center Channel speakers from Cambridge Audio and Monitor Audio . Let's have a brief look at the main features
of Cambridge Audio SX-70 and Monitor Audio Bronze C150 first before getting into our more
detailed comparison.
In the following sections, we will get into more detail in order to better understand how the Cambridge Audio SX-70 and Monitor Audio Bronze C150 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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Drivers
Both SX-70 and Bronze C150 are 2-way speakers.
| Driver |
Cambridge Audio SX-70 |
Monitor Audio Bronze C150 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 4-inch
|
1 x 5.25-inch
|
SX-70 features a 1" Silk dome Tweeter and 2 x 4" treated-paper Woofer . On the other hand, the Bronze C150 features a 1" aluminum vented dome with waveguide Tweeter and 1 x 5.25" aluminum Woofer .
Frequency Response
SX-70 has a frequency range of 65-22k Hz whereas Bronze C150 has a frequency range of 66-30k Hz. With a minimum frequency of 65Hz, the SX-70 can go slightly deeper then the Bronze C150's min frequency of 66Hz.
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 Center Channel class in our database.
Low Frequency
Center Channel Speakers
High Frequency
Center Channel Speakers
Monitor Audio Bronze C150
None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.
Impedance and Sensitivity
SX-70 and Bronze C150 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. SX-70 sensitivity is rated at 85 dB and the Bronze C150's is at 88 dB. This 3 dB difference makes the Monitor Audio Bronze C150 a more sensitive speaker compared to Cambridge Audio SX-70, hence will play louder with the same amount of watts.
Sensitivity
Center Channel Speakers
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. While using an amplifier within this range ensures the nominal performance , inputting a power that is higher than the max wattage can result in a damaged speaker.
SX-70 can handle a max power of 120 watts RMS from the amp the whereas SX-70 has a max power handling value of 100 watts RMS , 20 watts less than the Bronze C150.
Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker
compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters
such as Impedance, sensitivity and system efficiencies.
Input Type and Bi-Amping / Bi-Wiring
SX-70 features Binding post type posts and Bronze C150 has a Binding post type posts. None of these speakers feature bi-amping/bi-wiring.
Monitor Audio Bronze C150's Binding post terminals
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 Cambridge Audio SX-70's and Monitor Audio Bronze C150's external dimensions. Cambridge Audio SX-70 has external dimensions of 139.0 x 362.0 x 248.0mm ( 5-7/16 x 14-1/4 x 9-3/4inch) whereas Monitor Audio Bronze C150 has external dimensions of 167.0 x 453.0 x 228.0mm ( 6-9/16 x 17-13/16 x 8-15/16inch) .
Cambridge Audio SX-70 is 91mm narrower and 28mm shorter than Monitor Audio Bronze C150 but it is also 20mm deeper.
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 SX-70 is approximately 897.8cm2 / 139.2inch2 and base area of the Monitor Audio Bronze C150 is approximately 1032.8cm2 / 160.1inch2. The SX-70 requires 13% less surface area than the Bronze C150 which gives it a small advantage on placement in tight spaces.
Weight Comparison The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The Cambridge Audio SX-70 weighs 4.00kg / 8.8lbs and the Monitor Audio Bronze C150 weighs 7.01kg / 15.4lbs. This makes the Bronze C150 75% heavier than the SX-70.
Here is a comparison of how SX-70 and Bronze C150's weights compare with the average, max and min weights in Passive Center Channel class.
Weight
All Center Channel Speakers
Monitor Audio Bronze C150
What's in the Box of Cambridge Audio SX-70?
Here are the items that are included inside the box of SX-70:
Center-channel loudspeakerGrille4 Self-adhesive rubber feetInstallation Guide
What's in the Box of Monitor Audio Bronze C150?
Here are the items that come with the Bronze C150:
Center-channel loudspeakerGrille2 Terminal-jumpers (pre-installed)4 Self-adhesive rubber feetHex-keyQuick Start GuideImportant Safety Instructions
 Number of Woofers |
2
vs
1
|
More woofers |
| Low Frequency Response |
65 Hz
vs
66 Hz
|
Generates deeper bass |
 Height |
139mm
vs
167mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
897cm2 (362x248mm)
vs
1032cm2 (453x228mm)
|
Takes less floor space |
 Price per pair* |
189USD
vs
395USD
|
costs less (*prices may change depending on the seller, location and time) |
 Max Input Power |
120 watts
vs
100 watts
|
Handle more power from your amplifier |
 Sensitivity |
88 dB
vs
85 dB
|
Play louder with same amount of amplification power |
| Woofer Size |
5.25 inches
vs
4 inches
|
Larger woofer |
 High Frequency Response |
30k Hz
vs
22k Hz
|
Generates higher frequency |
| General |
Cambridge Audio SX-70 |
Monitor Audio Bronze C150 |
| Brand |
Cambridge Audio |
Monitor Audio |
| Speaker Type |
Center channel speaker (Matte Black) |
Center channel speaker |
| Power Range |
10-100 watts |
30-120 watts |
| Sensitivity |
85 dB |
88 dB |
| Impedance |
8 ohms |
8 ohms |
| Frequency Response |
65-22k Hz |
66-30k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
1 |
| Woofer Size |
4" |
5.25" |
| Woofer Composition |
treated-paper |
aluminum |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
dome |
vented dome with waveguide |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
N/A" |
No |
Physical Specs |
|
|
| Height |
139.0mm (5.5") |
167.0mm (6.6") |
| Width |
362.0mm (14.3") |
453.0mm (17.8") |
| Depth |
248.0mm (9.8") |
228.0mm (9") |
| Weight |
4.00kg (8.8lbs) |
7.01kg (15.4lbs) |
| Enclosure |
Acoustic Suspension |
Acoustic Suspension |
| Available Colors |
Black |
Walnut |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |