In this review, we will be comparing Debut 3.0 DF53 and Concord, two Passive Floor-standing speakers from ELAC and KLH.
Let's have a brief look at the main features
of ELAC Debut 3.0 DF53 and KLH Concord first before getting into our more
detailed comparison.
| Key Specs | ELAC Debut 3.0 DF53 | KLH Concord |
|---|
| Brand | ELAC
Germany · founded 1926 | KLH
United States · founded 1957 |
|---|
| Design | 3-way | 2-way |
|---|
| Tweeter | 1" Hard-Dome | 1" |
|---|
| Midrange | 5.25" | — |
|---|
| Woofer | 2 x 5.25" Aramid fiber | 2 x 6.5" Kevlar |
|---|
| Frequency response | 38 to 38K Hz | 28-23k Hz |
|---|
| Sensitivity | 87.5 dB | 94 dB |
|---|
| Impedance | 4 ohms | 8 ohms |
|---|
| Power range | 30 - 150 watts | up to 225 watts |
|---|
| Weight | 15.73kg / 34.6lbs | 20.45kg / 45lbs |
|---|
| Dimensions (H x W x D) | 40-9/16" x 8-11/16" x 11-5/8"
1031.0 x 221.0 x 296.0mm | 40-3/8" x 8-5/16" x 14-15/16"
1026.0 x 212.0 x 380.0mm |
|---|
The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.
Drivers
One of the fundamental differences between these two speakers is that Debut 3.0 DF53 is a 3-way design whereas the Concord is a 2-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.
ELAC Debut 3.0 DF53KLH Concord
TweeterMidrangeWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
ELAC Debut 3.0 DF53 |
KLH Concord |
|
Driver Setup
|
3-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
1 x 5.25-inch |
- |
|
Woofer
|
2 x 5.25-inch
|
2 x 6.5-inch
|
Debut 3.0 DF53 features a 1" Hard-Dome Tweeter, a 5.25" Midrange and 2 x 5.25" Aramid fiber Woofer with a Crossover frequency at 500Hz and 2100Hz. On the other hand, the Concord features a 1" anodized aluminum Tweeter and 2 x 6.5" Kevlar Woofer.
Frequency Response
Debut 3.0 DF53 has a frequency range of 38 to 38K 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 Debut 3.0 DF53's min frequency of 38Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Floor-standing class in our database.
Low Frequency
Floor-standing Speakers
Neither pair reaches down to 20Hz, the usual definition of full-range, which is normal for speakers of this size. If you want the bottom octave for movies or bass-heavy music, add a subwoofer to whichever you choose. Visit our Powered Subwoofers section to find out more about the available options.
Impedance and Sensitivity
Debut 3.0 DF53 is a 4 ohms speaker compared to the Concord which has a nominal impedance of 8 ohms. Lower impedance speakers, especially the ones that are rated at 4 ohms may put more pressure on the amplifier unit especially when played at high volume levels, so make sure the amp you pair with the Debut 3.0 DF53 can provide this impedance level.
These two speakers also have different sensitivity levels. Debut 3.0 DF53 sensitivity is rated at 87.5 dB and the Concord's is rated at 94 dB. This 6 dB difference makes the KLH Concord a more sensitive speaker compared to ELAC Debut 3.0 DF53, 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. Staying
within that range gives nominal performance; driving the speaker beyond its maximum wattage can damage it.
Concord can handle a max power of 225 watts RMS, whereas Debut 3.0 DF53 has a max power handling value of 150 watts RMS, 75 watts less than the Concord.
Note that higher power handling does not make a speaker louder: that depends mainly on
sensitivity and impedance. The calculator below shows how loud each of these actually plays
on a real amplifier.
Which plays louder on your amplifier?
Starting with a popular amplifier - change it to the one you own, or any you are
considering, and watch both numbers move.
Input Type and Bi-Amping / Bi-Wiring
Debut 3.0 DF53 features 5-Way post type posts and Concord has a 5-Way post type posts. None of these speakers feature bi-amping/bi-wiring.
ELAC Debut 3.0 DF53's 5-Way post terminals
KLH Concord's 5-Way post terminals
ELAC Debut 3.0 DF53 Port
Physical Specs
The size of a speaker can sometimes be an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare ELAC Debut 3.0 DF53's and KLH Concord's external dimensions. ELAC Debut 3.0 DF53 has external dimensions of 1031.0 x 221.0 x 296.0mm (40-9/16-inch x 8-11/16-inch x 11-5/8-inch) 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 9mm narrower and 5mm shorter than ELAC Debut 3.0 DF53 but it is also 84mm deeper.
Below you can see the front view size comparison of ELAC Debut 3.0 DF53 and KLH Concord in scale.
Comparison image of ELAC Debut 3.0 DF53 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 ELAC Debut 3.0 DF53 is approximately 654.2cm2 / 101.4inch2 and base area of the KLH Concord is approximately 805.6cm2 / 124.9inch2. The Debut 3.0 DF53 requires 19% 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 ELAC Debut 3.0 DF53 weighs 15.73kg / 34.6lbs and the KLH Concord weighs 20.45kg / 45lbs. This makes the Concord 30% heavier than the Debut 3.0 DF53.
Here is a comparison of how Debut 3.0 DF53 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 KLH Concord?
Here are the items that come with the Concord:
- Floorstanding loudspeaker
- Grille
- 4 Spike feet (w/ locking nut attached)
- 4 Protective discs
- 4 Rubber feet
- Port plug
- Manual
- ATTENTION! note
 Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
 High Frequency Response |
38k Hz
vs
23k Hz
|
Generates higher frequency |
 Base Surface Area |
654cm2
vs
805cm2
|
Takes less floor space |
 Price per pair* |
899USD
vs
1000USD
|
costs less (*prices may change depending on the seller, location and time) |
 Max Input Power |
225 watts
vs
150 watts
|
Handle more power from your amplifier |
 Sensitivity |
94 dB
vs
88 dB
|
Play louder with same amount of amplification power |
 Nominal Impedance |
8 ohms
vs
4 ohms
|
Less selective with amplifiers |
 Woofer Size |
6.5 inches
vs
5.25 inches
|
Larger woofer |
|
Low Frequency Response |
28 Hz
vs
38 Hz
|
Generates deeper bass |
 Height |
1026mm
vs
1031mm
|
Easier to fit in smaller spaces |
| General |
ELAC Debut 3.0 DF53 |
KLH Concord |
| Brand |
ELAC |
KLH |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
30 - 150 watts |
up to 225 watts |
| Sensitivity |
87.5 dB |
94 dB |
| Impedance |
4 ohms |
8 ohms |
| Impedance |
4.2 ohms |
n/a |
| Frequency Response |
38 to 38K Hz |
28-23k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
5.25" |
6.5" |
| Woofer Composition |
Aramid fiber |
Kevlar |
| Woofer Surround Material |
Rubber |
Butyl Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Hard-Dome |
n/a |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
5.25" |
No |
| Crossover Frequency |
500Hz and 2100Hz |
n/a |
| Firing Direction |
rear |
n/a |
Physical Specs |
|
|
| Height |
1031.0mm (40.6") |
1026.0mm (40.4") |
| Width |
221.0mm (8.7") |
212.0mm (8.3") |
| Depth |
296.0mm (11.7") |
380.0mm (15") |
| Weight |
15.73kg (34.6lbs) |
20.45kg (45lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Wood-grain Vinyl |
MDF/Wood-grain vinyl |
| Available Colors |
Black,Walnut |
Black |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
No |
Other |
|
|
| Parts Warranty |
3 Years |
10 Years |
| Labor Warranty |
3 Years |
10 Years |
No single best speaker here - they are built to different priorities, and the right one depends on your room, your amplifier and what you listen to.
| Area | Better | Why |
|---|
| Bass | B | KLH Concord digs deeper - 28Hz against 38Hz. |
| Amplifier needs | B | KLH Concord is more sensitive (94dB vs 88dB), so it goes louder on the same amplifier. |
| Amplifier match | B | KLH Concord is the easier load at 8 ohms; the other is 4 ohms and wants an amplifier rated for it. |
| Headroom | B | KLH Concord takes more power (225W vs 150W) - more in hand in a big room. |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Price | A | ELAC Debut 3.0 DF53 is cheaper - $899 against $1,000, about 10% less. |
A ELAC Debut 3.0 DF53 B KLH Concord
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both speakers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
KLH Concord leads across most of the measured areas for a fairly modest premium, which makes it the easier pick if the budget stretches. ELAC Debut 3.0 DF53 is the one to take if it does not. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 38Hz anyway, which makes the cheaper ELAC Debut 3.0 DF53 much easier to justify. If your amplifier is modest, vintage or valve-based, KLH Concord is the safer partner - the other will want more current or more watts to sound its best.
And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.