In this review, we will be comparing HTM71 S3 and Airmotiv C1+, two Passive Center Channel speakers from Bowers Wilkins and Emotiva.
Let's have a brief look at the main features
of B&W HTM71 S3 and Emotiva Airmotiv C1+ first before getting into our more
detailed comparison.
B&W HTM71 S3 Key Specs
- 3-way Design
- 1" Solid Body Soft-Dome Tweeter
- 4" Midrange
- 4 x 5" Aerofoil Profile Woofer
- 50-28k Hz Frequency Response
- 89 dB Sensitivity
- Impedance: 8ohms
- Power Range:30-200watts
- Weight:17.50kg
- Dimensions (H x W x D): 235.0" x 24-3/4" x 14"( 235.0 x 629.0 x 356.0mm )
Emotiva Airmotiv C1+ Key Specs
- 3-way Design
- 25×32 mm" folded ribbon Tweeter
- 3" Midrange
- 2 x 5.25" woven fiber cone Woofer
- 3" Midrange
- 50 Hz – 28 kHz Frequency Response
- 89 dB Sensitivity
- Impedance: 4ohms
- Power Range:Up to 120watts
- Weight:8.45kg
- Dimensions (H x W x D): 197.0" x 20-1/2" x 8-1/4"( 197.0 x 521.0 x 210.0mm )
What size room are the B&W HTM71 S3 and Emotiva Airmotiv C1+ 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:
| Listening Environment* |
B&W HTM71 S3 |
Emotiva Airmotiv C1+ |
| Near-field |
Poor |
Poor |
| Small Room |
Average |
Average |
| Mid-size Room |
Good |
Good |
| Large Room |
Average |
Average |
| Very Large Room |
Poor |
Poor |
(* Approximate Room sizes: Small < 100sq. ft / 9 m2,
Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: >
400 sq. ft / 36 m2.
Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual
listening experience changes depending on floor height, room shape, surface materials, listening
position, speaker locations, etc.)
In the following sections, we will get into more detail in order to better understand how the B&W HTM71 S3 and Emotiva Airmotiv C1+ compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
**This post contains affiliate links, and I will be compensated if you make a purchase after clicking
through my links. As an Amazon Associate I earn from qualifying purchases.
Drivers
Both HTM71 S3 and Airmotiv C1+ are 3-way speakers.
| Driver |
B&W HTM71 S3 |
Emotiva Airmotiv C1+ |
|
Driver Setup
|
3-way
|
3-way
|
|
Tweeter
|
1-inch
|
25×32 mm-inch
|
|
Midrange
|
1 x 4-inch |
1 x 3-inch |
|
Woofer
|
4 x 5-inch
|
2 x 5.25-inch
|
HTM71 S3 features a 1" Decoupled Carbon Solid Body Soft-Dome Tweeter , a 4" Midrange and 4 x 5" Aerofoil Profile Woofer . On the other hand, the Airmotiv C1+ features a 25×32 mm" folded ribbon Tweeter , a 3" Midrange and 2 x 5.25" woven fiber cone Woofer with a Crossover frequency at 550 Hz and 2600Hz.
Frequency Response
HTM71 S3 has a frequency range of 50-28k Hz whereas Airmotiv C1+ has a frequency range of 50 Hz – 28 kHz.
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
HTM71 S3 is a 8 ohms speaker compared to the Airmotiv C1+ which has a nominal impedance of 4 ohms. Lower impedance speakers, especially the ones that are rated at 4 ohms may put more pressure on the amplifier unit especially when played at high volume levels, so make sure the amp you pair with the Airmotiv C1+ can provide this impedance level.
On the other hand, they have the same sensitivity of 89 dBdB.
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.
HTM71 S3 can handle a max power of 200 watts RMS from the amp the whereas Airmotiv C1+ has a max power handling value of 120 watts RMS, 80 watts less than the HTM71 S3.
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 HTM71 S3 and Airmotiv C1+ features dual binding post speaker terminals for bi-amping or bi-wiring.
B&W HTM71 S3's Binding post terminals allows Bi-amping or bi-wiring
Emotiva Airmotiv C1+'s Binding post terminals allows Bi-amping or bi-wiring
Cabinet Type and Port Position
Both HTM71 S3 and Airmotiv C1+ 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 B&W HTM71 S3's and Emotiva Airmotiv C1+'s external dimensions. B&W HTM71 S3 has external dimensions of 235.0 x 629.0 x 356.0mm ( 9-1/4inch x 24-3/4inch x 14inch ) whereas Emotiva Airmotiv C1+ has external dimensions of 197.0 x 521.0 x 210.0mm ( 7-3/4 x 20-1/2 x 8-1/4inch) .
B&W HTM71 S3 is clearly the larger of the two speakers. Its body is 108mm wider, 38mm taller and 146mm deeper than Emotiva Airmotiv C1+.
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 B&W HTM71 S3 is approximately 2239.2cm2 / 347.1inch2 and base area of the Emotiva Airmotiv C1+ is approximately 1094.1cm2 / 169.6inch2. The HTM71 S3 requires 105% more surface area than the Airmotiv C1+ which gives it a small disadvantage on placement in tight spaces.