In this review, we will be comparing 5050 and Concord, two Passive Floor-standing speakers from Q Acoustics and KLH.
Let's have a brief look at the main features
of Q Acoustics 5050 and KLH Concord first before getting into our more
detailed comparison.
| Key Specs | Q Acoustics 5050 | KLH Concord |
|---|
| Brand | Q Acoustics
United Kingdom · founded 2006 | KLH
United States · founded 1957 |
|---|
| Design | 2-way | 2-way |
|---|
| Tweeter | 1" Soft-dome | 1" |
|---|
| Woofer | 2 x 6" Continuous Curved Cone | 2 x 6.5" Kevlar |
|---|
| Frequency response | 39-30k Hz | 28-23k Hz |
|---|
| Sensitivity | 91.5 dB | 94 dB |
|---|
| Impedance | 6 ohms | 8 ohms |
|---|
| Power range | 25-175 watts | up to 225 watts |
|---|
| Weight | 21.60kg / 47.5lbs | 20.45kg / 45lbs |
|---|
| Dimensions (H x W x D) | 43.3" x 12.6" x 17.3"
1100.0 x 320.0 x 439.0mm | 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.
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Drivers
Both 5050 and Concord are 2-way speakers.
Q Acoustics 5050KLH Concord
TweeterWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
Q Acoustics 5050 |
KLH Concord |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 6-inch
|
2 x 6.5-inch
|
5050 features a 1" Soft-dome Tweeter and 2 x 6" Continuous Curved Cone Woofer with a Crossover frequency at 2700 Hz. On the other hand, the Concord features a 1" anodized aluminum Tweeter and 2 x 6.5" Kevlar Woofer.
Frequency Response
5050 has a frequency range of 39-30k 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 5050's min frequency of 39Hz.
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
5050 is a 6 ohms speaker compared to the Concord which has a nominal impedance of 8 ohms.
These two speakers also have different sensitivity levels. 5050 sensitivity is rated at 91.5 dB and the Concord's is rated at 94 dB. This 2 dB difference makes the KLH Concord a more sensitive speaker compared to Q Acoustics 5050, 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 5050 has a max power handling value of 175 watts RMS, 50 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
5050 features 5-Way post type posts and Concord has a 5-Way post type posts. None of these speakers feature bi-amping/bi-wiring.
Q Acoustics 5050's Binding post terminals
KLH Concord's 5-Way post terminals
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 Q Acoustics 5050's and KLH Concord's external dimensions. Q Acoustics 5050 has external dimensions of 1100.0 x 320.0 x 439.0mm (40.0 x 15.2 x 13.2 in) 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).
Q Acoustics 5050 is clearly the larger of the two speakers. Its body is 108mm wider, 74mm taller and 59mm deeper than KLH Concord.
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 Q Acoustics 5050 is approximately 1404.8cm2 / 217.7inch2 and base area of the KLH Concord is approximately 805.6cm2 / 124.9inch2. The 5050 requires 74% more surface area than the Concord 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 Q Acoustics 5050 weighs 21.60kg / 47.5lbs and the KLH Concord weighs 20.45kg / 45lbs. This makes the 5050 6% heavier than the Concord.
Here is a comparison of how 5050 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 Q Acoustics 5050?
Here are the items that are included inside the box of 5050:
- 1x 5050 loudspeaker
- 1x Owners manual
- 2x Foam bung
- 4x Spike feet
- 4x Spike cover
- 4x M5 screw
- 2x Rear stabiliser
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
 High Frequency Response |
30k Hz
vs
23k Hz
|
Generates higher frequency |
 Max Input Power |
225 watts
vs
175 watts
|
Handle more power from your amplifier |
 Sensitivity |
94 dB
vs
92 dB
|
Play louder with same amount of amplification power |
 Nominal Impedance |
8 ohms
vs
6 ohms
|
Less selective with amplifiers |
 Woofer Size |
6.5 inches
vs
6 inches
|
Larger woofer |
|
Low Frequency Response |
28 Hz
vs
39 Hz
|
Generates deeper bass |
 Height |
1026mm
vs
1100mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
805cm2
vs
1404cm2
|
Takes less floor space |
 Price per pair* |
1000USD
vs
1999USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Q Acoustics 5050 |
KLH Concord |
| Brand |
Q Acoustics |
KLH |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
25-175 watts |
up to 225 watts |
| Sensitivity |
91.5 dB |
94 dB |
| Impedance |
6 ohms |
8 ohms |
| Impedance |
3.6 ohms |
n/a |
| Frequency Response |
39-30k Hz |
28-23k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
6" |
6.5" |
| Woofer Composition |
Continuous Curved Cone |
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 |
2700 Hz |
n/a |
| Firing Direction |
rear |
n/a |
Physical Specs |
|
|
| Height |
1100.0mm (43.3") |
1026.0mm (40.4") |
| Width |
320.0mm (12.6") |
212.0mm (8.3") |
| Depth |
439.0mm (17.3") |
380.0mm (15") |
| Weight |
21.60kg (47.5lbs) |
20.45kg (45lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF |
MDF/Wood-grain vinyl |
| Available Colors |
Holme Oak,Satin Black,Satin White,Santos Rosewood |
Black |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
No |
Other |
|
|
| Parts Warranty |
5 years |
10 Years |
| Labor Warranty |
5 years |
10 Years |
These sit in different price classes - Q Acoustics 5050 costs roughly 2x what KLH Concord does. Expect it to lead on paper; the question is whether the gap is audible enough in your room to be worth it.
| Area | Better | Why |
|---|
| Bass | B | KLH Concord digs deeper - 28Hz against 39Hz. |
| Amplifier needs | B | KLH Concord is more sensitive (94dB vs 92dB), so it goes louder on the same amplifier. |
| Amplifier match | B | KLH Concord is the easier load at 8 ohms. |
| Headroom | B | KLH Concord takes more power (225W vs 175W) - more in hand in a big room. |
| Size | depends | KLH Concord is easier to place; Q Acoustics 5050 is bigger, which usually goes with fuller bass. Your room decides. |
| Price | B | KLH Concord is cheaper - $1,000 against $1,999, about 50% less; arguably a different class. |
A Q Acoustics 5050 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 is the easier recommendation: it leads on most of the measured areas and costs less. Take Q Acoustics 5050 if its size, looks or fit in your room suit you better. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 39Hz anyway, so judge these on the other rows instead. In a large or open-plan room, Q Acoustics 5050 has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, KLH Concord is the easier speaker to get right.
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.