In this review, we will be comparing Diamond 12.4 and Concord, two Passive Floor-standing speakers from Wharfedale and KLH. Let's have a brief look at the main features
of Wharfedale Diamond 12.4 and KLH Concord first before getting into our more
detailed comparison.
In the following sections, we will get into more detail in order to better understand how the Wharfedale Diamond 12.4 and KLH Concord 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 12.4 and Concord are 2-way speakers.
| Driver |
Wharfedale Diamond 12.4 |
KLH Concord |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 6.5-inch
|
2 x 6.5-inch
|
Diamond 12.4 features a 1" Textile Soft-Dome Tweeter and 2 x 6.5" Mica-infused polypropylene Woofer with a Crossover frequency at 2100Hz. On the other hand, the Concord features a 1" anodized aluminum Tweeter and 2 x 6.5" Kevlar Woofer .
Frequency Response
Diamond 12.4 has a frequency range of 40-20k Hz whereas Concord has a frequency range of 28-23k Hz. With a minimum frequency of 28Hz, the Concord can go significantly deeper on the low side and provide stronger bass compared to the Diamond 12.4's min frequency of 40Hz.
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
Diamond 12.4 and Concord have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Diamond 12.4 sensitivity is rated at 89 dB and the Concord's is at 94 dB. This 5 dB difference makes the KLH Concord a more sensitive speaker compared to Wharfedale Diamond 12.4, 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.
Diamond 12.4 can handle a max power of 200 watts RMS from the amp the whereas Concord has a max power handling value of watts RMS, 200 watts less than the Diamond 12.4.
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 12.4 features Binding post posts which make bi-amping or bi-wiring possible. Concord has a 5-Way post which doesn't feature bi-amping/bi-wiring.
KLH Concord's 5-Way post 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 Wharfedale Diamond 12.4's and KLH Concord's external dimensions. Wharfedale Diamond 12.4 has external dimensions of 1156.0 x 200.0 x 388.0mm ( 45-1/2 x 8 x 15-1/4inch) whereas KLH Concord has external dimensions of 1026.0 x 212.0 x 380.0mm ( 40-3/8 x 8-5/16 x 14-15/16inch) .
KLH Concord is 130mm shorter and 8mm less deeper than Wharfedale Diamond 12.4 but it is also 12mm wider.
Below you can see the front view size comparison of Wharfedale Diamond 12.4 and KLH Concord in scale.
Comparison image of Wharfedale Diamond 12.4 and KLH Concord 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 Diamond 12.4 is approximately 776.0cm2 / 120.3inch2 and base area of the KLH Concord is approximately 805.6cm2 / 124.9inch2. The Diamond 12.4 requires 4% less surface area than the Concord 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 Wharfedale Diamond 12.4 weighs 22.40kg / 49.3lbs and the KLH Concord weighs 20.45kg / 45lbs. This makes the Diamond 12.4 10% heavier than the Concord.
Here is a comparison of how Diamond 12.4 and Concord'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 Wharfedale Diamond 12.4?
Here are the items that are included inside the box of Diamond 12.4:
Floorstanding loudspeakerGrille4 Spike feet (w/ locking collars)2 Jumper-bars (pre-installed)4 Isolation pucksUsers Manual
What's in the Box of KLH Concord?
Here are the items that come with the Concord:
Floorstanding loudspeakerGrille4 Spike feet (w/ locking nut attached)4 Protective discs4 Rubber feetPort plugManualATTENTION! note
 Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
 Base Surface Area |
776cm2 (200x388mm)
vs
805cm2 (212x380mm)
|
Takes less floor space |
 Sensitivity |
94 dB
vs
89 dB
|
Play louder with same amount of amplification power |
 Low Frequency Response |
28 Hz
vs
40 Hz
|
Generates deeper bass |
 High Frequency Response |
23k Hz
vs
20k Hz
|
Generates higher frequency |
 Height |
1026mm
vs
1156mm
|
Easier to fit in smaller spaces |
 Price per pair* |
1000USD
vs
1298USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Wharfedale Diamond 12.4 |
KLH Concord |
| Brand |
Wharfedale |
KLH |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
30-200 watts |
up to 225 watts |
| Sensitivity |
89 dB |
94 dB |
| Impedance |
8 ohms |
8 ohms |
| Impedance |
5 ohms |
n/a |
| Frequency Response |
40-20k Hz |
28-23k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
6.5" |
6.5" |
| Woofer Composition |
Mica-infused polypropylene |
Kevlar |
| Woofer Surround Material |
Rubber |
Butyl Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Soft-Dome |
n/a |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
2100Hz |
n/a |
| Firing Direction |
rear |
n/a |
Physical Specs |
|
|
| Height |
1156.0mm (45.5") |
1026.0mm (40.4") |
| Width |
200.0mm (7.9") |
212.0mm (8.3") |
| Depth |
388.0mm (15.3") |
380.0mm (15") |
| Weight |
22.40kg (49.3lbs) |
20.45kg (45lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Wood-grain vinyl |
MDF/Wood-grain vinyl |
| Available Colors |
Black |
Black |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
Yes |
No |
Other |
|
|
| Parts Warranty |
5 Years |
10 Years |
| Labor Warranty |
5 Years |
10 Years |