In this review, we will be comparing Airmotiv T1+ and S55, two Passive Floor-standing speakers from Emotiva and Polk Audio. Let's have a brief look at the main features
of Emotiva Airmotiv T1+ and Polk S55 first before getting into our more
detailed comparison.
What size room are the Emotiva Airmotiv T1+ and Polk S55 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 Emotiva Airmotiv T1+ and Polk S55 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
One of the fundamental differences between these two speakers is that Airmotiv T1+ is a 3-way design whereas the S55 is a 2-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 |
Emotiva Airmotiv T1+ |
Polk S55 |
Driver Setup
|
3-way
|
2-way
|
Tweeter
|
25×32 mm-inch
|
1-inch
|
Midrange
|
1 x 5.25-inch |
- |
Woofer
|
2 x 6-inch
|
2 x 6.5-inch
|
Airmotiv T1+ features a 25×32 mm" folded ribbon Tweeter , a 5.25" Midrange and 2 x 6" woven fiber cone Woofer with a Crossover frequency at 275 Hz and 2700Hz. On the other hand, the S55 features a 1" Terylene Dome Tweeter and 2 x 6.5" Mica-reinforced polypropylene Woofer with a Crossover frequency at 2500Hz.
Frequency Response
Airmotiv T1+ has a frequency range of 37 Hz – 28 kHz whereas S55 has a frequency range of 32-40k Hz. With a minimum frequency of 32Hz, the S55 can go significantly deeper on the low side and provide stronger bass compared to the Airmotiv T1+'s min frequency of 37Hz.
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 Floor-standing class in our database.
Low Frequency
Floor-standing Speakers
High Frequency
Floor-standing 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
Airmotiv T1+ is a 4 ohms speaker compared to the S55 which has a nominal impedance of 8 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 T1+ can provide this impedance level.
These two speakers also have different sensitivity levels. Airmotiv T1+ sensitivity is rated at 88 dB and the S55's is rated at 90 dB. This 2 dB difference makes the Polk S55 a more sensitive speaker compared to Emotiva Airmotiv T1+, hence will play louder with the same amount of watts.
Sensitivity
Floor-standing 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.
Airmotiv T1+ can handle a max power of 200 watts RMS from the amp the whereas Airmotiv T1+ has a max power handling value of 150 watts RMS , 50 watts less than the S55.
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 Airmotiv T1+ and S55 features dual binding post speaker terminals for bi-amping or bi-wiring.
Cabinet Type and Port Position
Airmotiv T1+ has a rear firing port whereas S55 has a bottom firing ports. Polk S55's bottom-firing port gives more flexibility in placement in regards to proximity to walls compared to Emotiva Airmotiv T1+ with its rear-firing port.
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 Emotiva Airmotiv T1+'s and Polk S55's external dimensions. Emotiva Airmotiv T1+ has external dimensions of 1004.0 x 213.0 x 296.0mm ( 39-1/2 x 8-3/8 x 11-5/8inch) whereas Polk S55 has external dimensions of 1056.0 x 299.0 x 315.0mm ( 41-9/16 x 11-3/4 x 12-3/8inch) .
Polk S55 is clearly the larger of the two speakers. Its body is 86mm wider, 52mm taller and 19mm deeper than Emotiva Airmotiv T1+.
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 Emotiva Airmotiv T1+ is approximately 630.5cm2 / 97.7inch2 and base area of the Polk S55 is approximately 941.9cm2 / 146.0inch2. The Airmotiv T1+ requires 33% less surface area than the S55 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 Emotiva Airmotiv T1+ weighs 18.20kg / 40lbs and the Polk S55 weighs 20.00kg / 44lbs. This makes the S55 10% heavier than the Airmotiv T1+.
Here is a comparison of how Airmotiv T1+ and S55's weights compare with the average, max and min weights in Passive Floor-standing class.
Weight
All Floor-standing Speakers
What's in the Box of Polk S55?
Here are the items that come with the S55:
Floorstanding loudspeakerGrille (attached)4 Feet (pre-installed)Owners ManualOnline Product Registration
Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
Height |
1004mm
vs
1056mm
|
Easier to fit in smaller spaces |
Base Surface Area |
630cm2 (213x296mm)
vs
941cm2 (299x315mm)
|
Takes less floor space |
Max Input Power |
200 watts
vs
150 watts
|
Handle more power from your amplifier |
Sensitivity |
90 dB
vs
88 dB
|
Play louder with same amount of amplification power |
Nominal Impedance |
8 ohms
vs
4 ohms
|
Less selective with amplifiers |
Woofer Size |
6.5 inches
vs
6 inches
|
Larger woofer |
Low Frequency Response |
32 Hz
vs
37 Hz
|
Generates deeper bass |
High Frequency Response |
40k Hz
vs
28k Hz
|
Generates higher frequency |
Price per pair* |
658USD
vs
799USD
|
costs less (*prices may change depending on the seller, location and time) |
General |
Emotiva Airmotiv T1+ |
Polk Audio Signature S55 |
Brand |
Emotiva |
Polk Audio |
Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
Power Range |
Up to 150 watts |
20-200 watts |
Sensitivity |
88 dB |
90 dB |
Impedance |
4 ohms |
8 ohms |
Frequency Response |
37 Hz – 28 kHz |
32-40k Hz |
Drivers |
|
|
Woofer Quantity |
2 |
2 |
Woofer Size |
6" |
6.5" |
Woofer Composition |
woven fiber cone |
Mica-reinforced polypropylene |
Woofer Surround Material |
n/a |
Butyl rubber |
Tweeter Size |
25×32 mm" |
1" |
Tweeter Type |
folded ribbon |
Dome |
Aimable Tweeter |
No |
No |
Midrange Driver |
5.25" |
No |
Crossover Frequency |
275 Hz and 2700Hz |
2500Hz |
Firing Direction |
rear |
bottom |
Physical Specs |
|
|
Height |
1004.0mm (39.5") |
1056.0mm (41.6") |
Width |
213.0mm (8.4") |
299.0mm (11.8") |
Depth |
296.0mm (11.7") |
315.0mm (12.4") |
Weight |
18.20kg (40lbs) |
20.00kg (44lbs) |
Enclosure |
Bass reflex |
Bass Reflex |
Finish |
HDF |
Meddite MDF |
Available Colors |
Black |
Black |
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 |