In this review, we will be comparing Q150 and Diamond 11.0, two Passive Bookshelf speakers from KEF and Wharfedale.
Let's have a brief look at the main features
of KEF Q150 and Wharfedale 11.0 first before getting into our more
detailed comparison.
KEF Q150 Key Specs
- 2-way Design
- 11th Generation Uni-Q Driver
- 1" Dome Tweeter
- 5.25" Aluminum Woofer
- 51-28k Hz Frequency Response
- 86 dB Sensitivity
- Impedance: 8ohms
- Power Range:10-100watts
- Weight:5.60kg
- Dimensions (H x W x D): 303.0" x 7.0" x 10.9"( 303.0 x 180.0 x 278.0mm )
Wharfedale 11.0 Key Specs
- 2-way Design
- 1" Soft-Dome Tweeter
- 4" Woven Kevlar Woofer
- 75-20k Hz Frequency Response
- 85 dB Sensitivity
- Impedance: 8ohms
- Power Range:15-75watts
- Weight:3.09kg
- Dimensions (H x W x D): 256.0" x 6-3/16" x 7-1/8"( 256.0 x 158.0 x 181.0mm )
What size room are the KEF Q150 and Wharfedale 11.0 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 Q150 |
Wharfedale 11.0 |
| Near-field |
Average |
Good |
| Small Room |
Good |
Good |
| Mid-size Room |
Average |
Average |
| Large Room |
Poor |
Poor |
| Very Large Room |
Bad |
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 KEF Q150 and Wharfedale 11.0 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 Q150 and Diamond 11.0 are 2-way speakers.
| Driver |
KEF Q150 |
Wharfedale 11.0 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5.25-inch
|
1 x 4-inch
|
Q150 features a 1" vented aluminum Dome Tweeter and 1 x 5.25" Aluminum Woofer with a Crossover frequency at 2500Hz. On the other hand, the Diamond 11.0 features a 1" Soft-Dome Tweeter and 1 x 4" Woven Kevlar Woofer .
Frequency Response
Q150 has a frequency range of 51-28k Hz whereas Diamond 11.0 has a frequency range of 75-20k Hz. With a minimum frequency of 51Hz, the Q150 can go significantly deeper on the low side and provide stronger bass compared to the Diamond 11.0's min frequency of 75Hz.
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
Q150 and Diamond 11.0 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Q150 sensitivity is rated at 86 dB and the Diamond 11.0's is at 85 dB. This 1 dB difference makes the KEF Q150 a more sensitive speaker compared to Wharfedale 11.0, hence will play louder with the same amount of watts.
Sensitivity
Bookshelf 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.
Q150 can handle a max power of 100 watts RMS from the amp the whereas Diamond 11.0 has a max power handling value of 75 watts RMS, 25 watts less than the Q150.
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
Q150 features 5-way post type posts and Diamond 11.0 has a 5-way post type posts. None of these speakers feature bi-amping/bi-wiring.
KEF Q150's Post terminals
Cabinet Type and Port Position
Q150 has a rear firing port whereas Diamond 11.0 has a bottom firing ports. Wharfedale 11.0's bottom-firing port gives more flexibility in placement in regards to proximity to walls compared to KEF Q150 with its rear-firing port.
KEF Q150 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 KEF Q150's and Wharfedale 11.0's external dimensions. KEF Q150 has external dimensions of 303.0 x 180.0 x 278.0mm ( 11.9 x 7.0 x 10.9inch) whereas Wharfedale 11.0 has external dimensions of 256.0 x 158.0 x 181.0mm ( 10-1/16 x 6-3/16 x 7-1/8inch) .
KEF Q150 is clearly the larger of the two speakers. Its body is 22mm wider, 47mm taller and 97mm deeper than Wharfedale 11.0.
Below you can see the front view size comparison of KEF Q150 and Wharfedale 11.0 in scale.
Comparison image of KEF Q150 and Wharfedale 11.0 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 KEF Q150 is approximately 500.4cm2 / 77.6inch2 and base area of the Wharfedale 11.0 is approximately 286.0cm2 / 44.3inch2. The Q150 requires 75% more surface area than the Diamond 11.0 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 KEF Q150 and Wharfedale 11.0 on a Media Console
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 KEF Q150 weighs 5.60kg / 12.3lbs and the Wharfedale 11.0 weighs 3.09kg / 6.8lbs. This makes the Q150 81% heavier than the Diamond 11.0.
Here is a comparison of how Q150 and Diamond 11.0's weights compare with the average, max and min weights in Passive Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of KEF Q150?
Here are the items that are included inside the box of Q150:
2 Bookshelf loudspeakers 2 Foam port plugs 8 Self-adhesive rubber feet Owner's Manual Warranty Registration Card
What's in the Box of Wharfedale 11.0?
Here are the items that come with the Diamond 11.0:
2 Bookshelf loudspeakers2 Grilles (pre-installed)User-feets ManualInstallation Guide
 Max Input Power |
100 watts
vs
75 watts
|
Handle more power from your amplifier |
 Sensitivity |
86 dB
vs
85 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
5.25 inches
vs
4 inches
|
Larger woofer |
|
Low Frequency Response |
51 Hz
vs
75 Hz
|
Generates deeper bass |
 High Frequency Response |
28k Hz
vs
20k Hz
|
Generates higher frequency |
 Height |
256mm
vs
303mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
286cm2
vs
500cm2
|
Takes less floor space |
| General |
KEF Q150 |
Wharfedale Diamond 11.0 |
| Brand |
KEF |
Wharfedale |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
10-100 watts |
15-75 watts |
| Sensitivity |
86 dB |
85 dB |
| Impedance |
8 ohms |
8 ohms |
| Impedance |
3.7 ohms |
n/a |
| Frequency Response |
51-28k Hz |
75-20k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5.25" |
4" |
| Woofer Composition |
Aluminum |
Woven Kevlar |
| Woofer Surround Material |
Rubber |
Foam |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Dome |
Soft-Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
2500Hz |
n/a |
| Firing Direction |
rear |
bottom |
Physical Specs |
|
|
| Height |
303.0mm (11.9") |
256.0mm (10.1") |
| Width |
180.0mm (7.1") |
158.0mm (6.2") |
| Depth |
278.0mm (10.9") |
181.0mm (7.1") |
| Weight |
5.60kg (12.3lbs) |
3.09kg (6.8lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Vinyl-wrapped |
MDF/Wood veneer |
| Available Colors |
Black, Walnut, White |
Rosewood |
| Mounting Bracket |
No |
No |
| Recommended Stand Height |
18-24" |
24-28" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
No |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |