In this review, we will be comparing HTM72 S2 and HTM71 S2, two Passive Center Channel speakers by Bowers Wilkins Let's have a brief look at the main features
of BW HTM72 S2 and BW HTM71 S2 first before getting into our more
detailed comparison.
HTM72 S2 and HTM71 S2 are members of Bowers Wilkins's 700 S2 Anniversary Edition series of speakers. Below you can find the loudspeakers from this series.
What size room are the BW HTM72 S2 and BW HTM71 S2 speakers good for?
The size of the room in which you are planning to use these loudspeakers is an important decision factor. Here we have compared their suitability to various sizes of environments considering their size and max power parameters:
In the following sections, we will get into more detail in order to better understand how the BW HTM72 S2 and BW HTM71 S2 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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through my links. As an Amazon Associate I earn from qualifying purchases.
Drivers
One of the fundamental differences between these two speakers is that HTM72 S2 is a 2-way design whereas the HTM71 S2 is a 3-way speaker. 3-way designs utilize a midrange driver in addition to the tweeter and woofer on 2-way designs. Designing a crossover for a 3-way speaker is a complicated process and generally increases the overall cost of the speaker.
| Driver |
BW HTM72 S2 |
BW HTM71 S2 |
|
Driver Setup
|
2-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
1 x 4-inch |
|
Woofer
|
2 x 5-inch
|
2 x 6.5-inch
|
HTM72 S2 features a 1" Decoupled Carbon Dome Tweeter and 2 x 5" Continuum Woofer . On the other hand, the HTM71 S2 features a 1" Decoupled Carbon Dome Tweeter , a 4" Midrange and 2 x 6.5" Aerofoil Profile Woofer .
Frequency Response
HTM72 S2 has a frequency range of 70-28k Hz whereas HTM71 S2 has a frequency range of 50-28k Hz. With a minimum frequency of 50Hz, the HTM71 S2 can go significantly deeper on the low side and provide stronger bass compared to the HTM72 S2's min frequency of 70Hz.
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
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
HTM72 S2 and HTM71 S2 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. HTM72 S2 sensitivity is rated at 87 dB and the HTM71 S2's is at 89 dB. This 2 dB difference makes the BW HTM71 S2 a more sensitive speaker compared to BW HTM72 S2, 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.
HTM72 S2 can handle a max power of 200 watts RMS from the amp the whereas HTM72 S2 has a max power handling value of 120 watts RMS , 80 watts less than the HTM71 S2.
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
Both HTM72 S2 and HTM71 S2 features dual binding post speaker terminals for bi-amping or bi-wiring.
Cabinet Type and Port Position
Both HTM72 S2 and HTM71 S2 have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.
If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.
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 BW HTM72 S2's and BW HTM71 S2's external dimensions. BW HTM72 S2 has external dimensions of 169.0 x 482.0 x 278.0mm ( 6-5/8 x 18-15/16 x 10-15/16inch) whereas BW HTM71 S2 has external dimensions of 228.0 x 591.0 x 302.0mm ( 8-15/16 x 23-1/4 x 11-7/8inch) .
BW HTM71 S2 is clearly the larger of the two speakers. Its body is 109mm wider, 59mm taller and 24mm deeper than BW HTM72 S2.
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 BW HTM72 S2 is approximately 1340.0cm2 / 207.7inch2 and base area of the BW HTM71 S2 is approximately 1784.8cm2 / 276.6inch2. The HTM72 S2 requires 25% less surface area than the HTM71 S2 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 BW HTM72 S2 weighs 9.14kg / 20.1lbs and the BW HTM71 S2 weighs 18.05kg / 39.7lbs. This makes the HTM71 S2 97% heavier than the HTM72 S2.
Here is a comparison of how HTM72 S2 and HTM71 S2's weights compare with the average, max and min weights in Passive Center Channel class.
Weight
All Center Channel Speakers
What's in the Box of BW HTM72 S2?
Here are the items that are included inside the box of HTM72 S2:
Center-channel loudspeakerGrilleTwo-piece foam port plug4 Self-adhesive rubber feet4 Jumper-straps (pre-installed)ManualBowers Wilkins brochureWarranty Information
What's in the Box of BW HTM71 S2?
Here are the items that come with the HTM71 S2:
Center-channel loudspeakerGrille2 Two-piece foam port plugs4 Self-adhesive rubber feet4 Jumper-straps (pre-installed)ManualBowers Wilkins brochureWarranty Information
 Minimum Impedance |
4.3 ohms
vs
3.0 ohms
|
Very low impedance levels puts more pressure on amplifier |
 Height |
169mm
vs
228mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1340cm2 (482x278mm)
vs
1784cm2 (591x302mm)
|
Takes less floor space |
 Price per pair* |
1199USD
vs
1999USD
|
costs less (*prices may change depending on the seller, location and time) |
 Max Input Power |
200 watts
vs
120 watts
|
Handle more power from your amplifier |
 Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
 Sensitivity |
89 dB
vs
87 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
6.5 inches
vs
5 inches
|
Larger woofer |
| Low Frequency Response |
50 Hz
vs
70 Hz
|
Generates deeper bass |
| General |
Bowers & Wilkins HTM72 S2 |
Bowers & Wilkins HTM71 S2 |
| Brand |
Bowers Wilkins |
Bowers Wilkins |
| Speaker Type |
Center channel speaker |
Center channel speaker |
| Power Range |
30-120 watts |
30-200 watts |
| Sensitivity |
87 dB |
89 dB |
| Impedance |
8 ohms |
8 ohms |
| Impedance |
4.3 ohms |
3.0 ohms |
| Frequency Response |
70-28k Hz |
50-28k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
5" |
6.5" |
| Woofer Composition |
Continuum |
Aerofoil Profile |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Decoupled Carbon Dome |
Decoupled Carbon Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
4" |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
169.0mm (6.7") |
228.0mm (9") |
| Width |
482.0mm (19") |
591.0mm (23.3") |
| Depth |
278.0mm (10.9") |
302.0mm (11.9") |
| Weight |
9.14kg (20.1lbs) |
18.05kg (39.7lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Available Colors |
Gloss Black, Satin White, Rosenut |
Gloss Black, Satin White, Rosenut |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
Yes |
Yes |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |