In this review, we will be comparing Diamond 225 and Q350, two Passive Bookshelf speakers from Wharfedale and KEF. Let's have a brief look at the main features
of Wharfedale 225 and KEF Q350 first before getting into our more
detailed comparison.
Wharfedale 225 Key Specs
- 2-way Design
- 1" Dome Tweeter
- 6.5" Woven Kevlar Woofer
- 45-20k Hz Frequency Response
- 87 dB Sensitivity
- Impedance: 8ohms
- Power Range:25-120watts
- Weight:6.55kg
- Dimensions (H x W x D): 355.0" x 7.7" x 11.4"( 355.0 x 196.0 x 290.0mm )
KEF Q350 Key Specs
- 2-way Design
- 11th Generation Uni-Q Driver
- 1" Dome Tweeter
- 6.5" Aluminum Woofer
- 63-28k Hz Frequency Response
- 87 dB Sensitivity
- Impedance: 8ohms
- Power Range:10-120watts
- Weight:7.60kg
- Dimensions (H x W x D): 358.0" x 8.2" x 12.0"( 358.0 x 210.0 x 306.0mm )
What size room are the Wharfedale 225 and KEF Q350 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* |
Wharfedale 225 |
KEF Q350 |
| 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 Wharfedale 225 and KEF Q350 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
Both Diamond 225 and Q350 are 2-way speakers.
| Driver |
Wharfedale 225 |
KEF Q350 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 6.5-inch
|
1 x 6.5-inch
|
Diamond 225 features a 1" Dome Tweeter and 1 x 6.5" Woven Kevlar Woofer with a Crossover frequency at 2300Hz. On the other hand, the Q350 features a 1" vented aluminum Dome Tweeter and 1 x 6.5" Aluminum Woofer with a Crossover frequency at 2500Hz.
Frequency Response
Diamond 225 has a frequency range of 45-20k Hz whereas Q350 has a frequency range of 63-28k Hz. With a minimum frequency of 45Hz, the Diamond 225 can go significantly deeper on the low side and provide stronger bass compared to the Q350's min frequency of 63Hz.
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
Diamond 225 and Q350 have the same Impedance of 8 ohms and their sensitivity is also same at 87 dB.
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.
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
Diamond 225 features Post posts which make bi-amping or bi-wiring possible. Q350 has a Post which doesn't feature bi-amping/bi-wiring.
Wharfedale 225's Post terminals allows Bi-amping or bi-wiring
KEF Q350's Post terminals
Cabinet Type and Port Position
Diamond 225 has a bottom firing port whereas Q350 has a rear firing ports. Wharfedale 225's bottom-firing port gives more flexibility in placement in regards to proximity to walls compared to KEF Q350 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 Wharfedale 225's and KEF Q350's external dimensions. Wharfedale 225 has external dimensions of 355.0 x 196.0 x 290.0mm ( 13.9 x 7.7 x 11.4inch) whereas KEF Q350 has external dimensions of 358.0 x 210.0 x 306.0mm ( 14.0 x 8.2 x 12.0inch) .
KEF Q350 is clearly the larger of the two speakers. Its body is 14mm wider, 3mm taller and 16mm deeper than Wharfedale 225.
Below you can see the front view size comparison of Wharfedale 225 and KEF Q350 in scale.
Comparison image of Wharfedale 225 and KEF Q350 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 Wharfedale 225 is approximately 568.4cm2 / 88.1inch2 and base area of the KEF Q350 is approximately 642.6cm2 / 99.6inch2. The Diamond 225 requires 12% less surface area than the Q350 which gives it a small advantage 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 Wharfedale 225 and KEF Q350 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 Wharfedale 225 weighs 6.55kg / 14.4lbs and the KEF Q350 weighs 7.60kg / 16.7lbs. This makes the Q350 16% heavier than the Diamond 225.
Here is a comparison of how Diamond 225 and Q350's weights compare with the average, max and min weights in Passive Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of Wharfedale 225?
Here are the items that are included inside the box of Diamond 225:
2 Bookshelf loudspeakers 2 Grilles (pre-installed) 8 Self-adhesive rubber feet User's Manual Installation Guide
What's in the Box of KEF Q350?
Here are the items that come with the Q350:
2 Bookshelf loudspeakers 2 Foam port plugs 8 Self-adhesive rubber feet Owner's Manual Warranty Registration Card