In this review, we will be comparing Airmotiv B1+ and YU Passive 4-inch, two Passive Bookshelf speakers from Emotiva and Kanto.
Let's have a brief look at the main features
of Emotiva Airmotiv B1+ and Kanto YU Passive 4-inch first before getting into our more
detailed comparison.
Emotiva Airmotiv B1+ Key Specs
- 2-way Design
- 25×32 mm" folded ribbon Tweeter
- 5.25" woven fiber cone Woofer
- 48 Hz – 28 kHz Frequency Response
- 86 dB Sensitivity
- Impedance: 8ohms
- Power Range:Up to 70watts
- Weight:4.00kg
- Dimensions (H x W x D): 274.0" x 7-1/8" x 8-1/4"( 274.0 x 181.0 x 210.0mm )
Kanto YU Passive 4-inch Key Specs
- 2-way Design
- 1" Soft-Dome Tweeter
- 4" Kevlar Woofer
- 60-20k Hz Frequency Response
- 86 dB Sensitivity
- Impedance: 4ohms
- Weight:2.50kg
- Dimensions (H x W x D): 220.0" x 5.5" x 7.5"( 220.0 x 140.0 x 190.0mm )
What size room are the Emotiva Airmotiv B1+ and Kanto YU Passive 4-inch 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* |
Emotiva Airmotiv B1+ |
Kanto YU Passive 4-inch |
| Near-field |
Good |
Good |
| Small Room |
Good |
Good |
| Mid-size Room |
Average |
Average |
| Large Room |
Poor |
Poor |
| Very Large Room |
No way |
No way |
(* 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 Emotiva Airmotiv B1+ and Kanto YU Passive 4-inch 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 Airmotiv B1+ and YU Passive 4-inch are 2-way speakers.
| Driver |
Emotiva Airmotiv B1+ |
Kanto YU Passive 4-inch |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
25×32 mm-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5.25-inch
|
1 x 4-inch
|
Airmotiv B1+ features a 25×32 mm" folded ribbon Tweeter and 1 x 5.25" woven fiber cone Woofer with a Crossover frequency at 2000Hz. On the other hand, the YU Passive 4-inch features a 1" Silk Soft-Dome Tweeter and 1 x 4" Kevlar Woofer .
Frequency Response
Airmotiv B1+ has a frequency range of 48 Hz – 28 kHz whereas YU Passive 4-inch has a frequency range of 60-20k Hz. With a minimum frequency of 48Hz, the Airmotiv B1+ can go significantly deeper on the low side and provide stronger bass compared to the YU Passive 4-inch's min frequency of 60Hz.
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 Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf 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 B1+ is a 8 ohms speaker compared to the YU Passive 4-inch 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 YU Passive 4-inch can provide this impedance level.
On the other hand, they have the same sensitivity of 86 dBdB.
Sensitivity
Bookshelf Speakers
Cabinet Type and Port Position
Both Airmotiv B1+ and YU Passive 4-inch 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.
Emotiva Airmotiv B1+ 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 B1+'s and Kanto YU Passive 4-inch's external dimensions. Emotiva Airmotiv B1+ has external dimensions of 274.0 x 181.0 x 210.0mm ( 10-3/4 x 7-1/8 x 8-1/4inch) whereas Kanto YU Passive 4-inch has external dimensions of 220.0 x 140.0 x 190.0mm ( 8.7 x 5.5 x 7.5inch) .
Emotiva Airmotiv B1+ is clearly the larger of the two speakers. Its body is 41mm wider, 54mm taller and 20mm deeper than Kanto YU Passive 4-inch.
Below you can see the front view size comparison of Emotiva Airmotiv B1+ and Kanto YU Passive 4-inch in scale.
Comparison image of Emotiva Airmotiv B1+ and Kanto YU Passive 4-inch Size and External Dimensions
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 B1+ is approximately 380.1cm2 / 58.9inch2 and base area of the Kanto YU Passive 4-inch is approximately 266.0cm2 / 41.2inch2. The Airmotiv B1+ requires 43% more surface area than the YU Passive 4-inch which gives it a small disadvantage on placement in tight spaces.
Here is an another comparison that shows both speakers on a BDI Octave Media Cabinet, next to a standard size amplifier and turntable in scale:
Size Comparison image of Emotiva Airmotiv B1+ and Kanto YU Passive 4-inch on a Media Console