In this review, we will be comparing R7 and BP-9080X, two Passive Floor-standing speakers from KEF and Definitive Technology.
Let's have a brief look at the main features
of KEF R7 and Definitive BP-9080X first before getting into our more
detailed comparison.
KEF R7 Key Specs
- 3-way Design
- 1" Dome Tweeter
- 5" Midrange
- 2 x 6.5" Hybrid Aluminum Woofer
- 48-28k Hz Frequency Response
- 88 dB Sensitivity
- Impedance: 8ohms
- Power Range:15-250watts
- Weight:31.40kg
- Dimensions (H x W x D): 1113.0" x 8" x 15-5/16"( 1113.0 x 200.0 x 389.0mm )
Definitive BP-9080X Key Specs
- 3-way Design
- 1" dome Tweeter
- 5.25" Midrange
- 12" Polypropelene Woofer
- 5.25" Midrange
- 16-40k Hz Frequency Response
- 92 dB Sensitivity
- Impedance: 8ohms
- Power Range:50-300watts
- Weight:28.18kg
- Dimensions (H x W x D): 1309.0" x 12-1/2" x 16-1/8"( 1309.0 x 318.0 x 410.0mm )
What size room are the KEF R7 and Definitive BP-9080X 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* |
KEF R7 |
Definitive BP-9080X |
| Near-field |
Bad |
Are you nuts? |
| Small Room |
Poor |
Poor |
| Mid-size Room |
Average |
Average |
| Large Room |
Good |
Good |
| Very Large Room |
Average |
Good |
(* 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 KEF R7 and Definitive BP-9080X 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 R7 and BP-9080X are 3-way speakers.
| Driver |
KEF R7 |
Definitive BP-9080X |
|
Driver Setup
|
3-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
1 x 5-inch |
4 x 5.25-inch |
|
Woofer
|
2 x 6.5-inch
|
1 x 12-inch
|
R7 features a 1" aluminum Dome Tweeter , a 5" Midrange and 2 x 6.5" Hybrid Aluminum Woofer with a Crossover frequency at 400Hz and 2900Hz. On the other hand, the BP-9080X features a 1" annealed aluminum dome Tweeter , a 5.25" Midrange and 1 x 12" Polypropelene Woofer .
Frequency Response
R7 has a frequency range of 48-28k Hz whereas BP-9080X has a frequency range of 16-40k Hz. With a minimum frequency of 16Hz, the BP-9080X can go significantly deeper on the low side and provide stronger bass compared to the R7's min frequency of 48Hz.
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
Impedance and Sensitivity
R7 and BP-9080X have the same Impedance of 8 ohms but where they differ is the sensitivity levels. R7 sensitivity is rated at 88 dB and the BP-9080X's is at 92 dB. This 4 dB difference makes the Definitive BP-9080X a more sensitive speaker compared to KEF R7, 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.
R7 can handle a max power of 300 watts RMS from the amp the whereas R7 has a max power handling value of 250 watts RMS , 50 watts less than the BP-9080X.
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
R7 features Binding post posts which make bi-amping or bi-wiring possible. BP-9080X has a 5-Way post, RCA which doesn't feature bi-amping/bi-wiring.
KEF R7's Binding post terminals allows Bi-amping or bi-wiring
Definitive BP-9080X's 5-Way post, RCA 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 KEF R7's and Definitive BP-9080X's external dimensions. KEF R7 has external dimensions of 1113.0 x 200.0 x 389.0mm ( 43-13/16 x 8 x 15-5/16inch) whereas Definitive BP-9080X has external dimensions of 1309.0 x 318.0 x 410.0mm ( 51-1/2 x 12-1/2 x 16-1/8inch) .
Definitive BP-9080X is clearly the larger of the two speakers. Its body is 118mm wider, 196mm taller and 21mm deeper than KEF R7.
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 KEF R7 is approximately 778.0cm2 / 120.6inch2 and base area of the Definitive BP-9080X is approximately 1303.8cm2 / 202.1inch2. The R7 requires 40% less surface area than the BP-9080X which gives it a small advantage on placement in tight spaces.