In this review, we will be comparing Concord and Demand D15, two Passive Floor-standing speakers from KLH and Definitive Technology. Let's have a brief look at the main features
of KLH Concord and Definitive Demand D15 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 KLH Concord and Definitive Demand D15 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
One of the fundamental differences between these two speakers is that Concord is a 2-way design whereas the Demand D15 is a 3-way speaker. 3-way designs utilize a midrange driver in addition to the tweeter and woofer on 2-way designs. Designing a crossover for a 3-way speaker is a complicated process and generally increases the overall cost of the speaker.
| Driver |
KLH Concord |
Definitive Demand D15 |
|
Driver Setup
|
2-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
1 x 5.25-inch |
|
Woofer
|
2 x 6.5-inch
|
2 x 5.25-inch
|
Concord features a 1" anodized aluminum Tweeter and 2 x 6.5" Kevlar Woofer . On the other hand, the Demand D15 features a 1" aluminum dome Tweeter , a 5.25" Midrange and 2 x 5.25" Carbon-fiber Woofer .
Frequency Response
Concord has a frequency range of 28-23k Hz whereas Demand D15 has a frequency range of 48-22k Hz. With a minimum frequency of 28Hz, the Concord can go significantly deeper on the low side and provide stronger bass compared to the Demand D15'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
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
Concord and Demand D15 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Concord sensitivity is rated at 94 dB and the Demand D15's is at 85.5 dB. This 8 dB difference makes the KLH Concord a more sensitive speaker compared to Definitive Demand D15, 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.
Concord can handle a max power of 300 watts RMS from the amp the whereas Concord has a max power handling value of watts RMS , 300 watts less than the Demand D15.
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
Demand D15 features 5-Way 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
Definitive Demand D15's 5-Way post terminals allows Bi-amping or bi-wiring
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 KLH Concord's and Definitive Demand D15's external dimensions. 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) whereas Definitive Demand D15 has external dimensions of 1023.0 x 231.0 x 324.0mm ( 40-1/4 x 9-1/16 x 12-3/4inch) .
Definitive Demand D15 is 3mm shorter and 56mm less deeper than KLH Concord but it is also 19mm wider.
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 KLH Concord is approximately 805.6cm2 / 124.9inch2 and base area of the Definitive Demand D15 is approximately 748.4cm2 / 116.0inch2. The Concord requires 8% more surface area than the Demand D15 which gives it a small disadvantage 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 KLH Concord weighs 20.45kg / 45lbs and the Definitive Demand D15 weighs 23.60kg / 51.9lbs. This makes the Demand D15 15% heavier than the Concord.
Here is a comparison of how Concord and Demand D15'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 KLH Concord?
Here are the items that are included inside the box of Concord:
Floorstanding loudspeakerGrille4 Spike feet (w/ locking nut attached)4 Protective discs4 Rubber feetPort plugManualATTENTION! note
What's in the Box of Definitive Demand D15?
Here are the items that come with the Demand D15:
Left floorstanding loudspeakerRight floorstanding loudspeaker2 Grilles4 Jumper-straps (pre-installed)2 Bases8 Spike feet8 Floor-glides8 Lock-rings8 ScrewsCleaning clothOwners Manual
 Sensitivity |
94 dB
vs
86 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
6.5 inches
vs
5.25 inches
|
Larger woofer |
| Low Frequency Response |
28 Hz
vs
48 Hz
|
Generates deeper bass |
 High Frequency Response |
23k Hz
vs
22k Hz
|
Generates higher frequency |
 Price per pair* |
1000USD
vs
2798USD
|
costs less (*prices may change depending on the seller, location and time) |
 Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
 Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
 Passive Radiator |
2 x 10-inch
vs
None
|
Increases the bass performance |
 Height |
1023mm
vs
1026mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
748cm2 (231x324mm)
vs
805cm2 (212x380mm)
|
Takes less floor space |
| General |
KLH Concord |
Definitive Technology Demand D15 |
| Brand |
KLH |
Definitive Technology |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
up to 225 watts |
30-300 watts |
| Sensitivity |
94 dB |
85.5 dB |
| Impedance |
8 ohms |
8 ohms |
| Frequency Response |
28-23k Hz |
48-22k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
6.5" |
5.25" |
| Woofer Composition |
Kevlar |
Carbon-fiber |
| Woofer Surround Material |
Butyl Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
n/a |
dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
5.25" |
Physical Specs |
|
|
| Height |
1026.0mm (40.4") |
1023.0mm (40.3") |
| Width |
212.0mm (8.3") |
231.0mm (9.1") |
| Depth |
380.0mm (15") |
324.0mm (12.8") |
| Weight |
20.45kg (45lbs) |
23.60kg (51.9lbs) |
| Enclosure |
Bass Reflex |
Passive Radiator |
| Finish |
MDF/Wood-grain vinyl |
MDF/Aluminum |
| Available Colors |
Black |
Gloss Black |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
Yes |
Other |
|
|
| Parts Warranty |
10 Years |
5 Years |
| Labor Warranty |
10 Years |
5 Years |