In this review, we will be comparing Concord and Borea BR09, two Passive Floor-standing speakers from KLH and Triangle.
Let's have a brief look at the main features
of KLH Concord and Triangle Borea BR09 first before getting into our more
detailed comparison.
| Key Specs | KLH Concord | Triangle Borea BR09 |
|---|
| Brand | KLH
United States · founded 1957 | Triangle
France · founded 1980 |
|---|
| Design | 2-way | 3-way |
|---|
| Tweeter | 1" | 1" dome |
|---|
| Midrange | — | 6" |
|---|
| Woofer | 2 x 6.5" Kevlar | 3 x 6" fiberglass |
|---|
| Frequency response | 28-23k Hz | 35 - 22k Hz |
|---|
| Sensitivity | 94 dB | 92.5 dB |
|---|
| Impedance | 8 ohms | 8 ohms |
|---|
| Power range | up to 225 watts | up to 170 watts |
|---|
| Weight | 20.45kg / 45lbs | 21.80kg / 48lbs |
|---|
| Dimensions (H x W x D) | 40-3/8" x 8-5/16" x 14-15/16"
1026.0 x 212.0 x 380.0mm | 43.1" x 8.1" x 12.3"
1095.0 x 206.0 x 314.0mm |
|---|
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 Concord is a 2-way design whereas the Borea BR09 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.
KLH ConcordTriangle Borea BR09
TweeterMidrangeWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
KLH Concord |
Triangle Borea BR09 |
|
Driver Setup
|
2-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
1 x 6-inch |
|
Woofer
|
2 x 6.5-inch
|
3 x 6-inch
|
Concord features a 1" anodized aluminum Tweeter and 2 x 6.5" Kevlar Woofer. On the other hand, the Borea BR09 features a 1" silk dome Tweeter, a 6" Midrange and 3 x 6" fiberglass Woofer with a Crossover frequency at 310Hz and 3900Hz.
Frequency Response
Concord has a frequency range of 28-23k Hz whereas Borea BR09 has a frequency range of 35 - 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 Borea BR09's min frequency of 35Hz.
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
Concord and Borea BR09 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Concord sensitivity is rated at 94 dB and the Borea BR09's is at 92.5 dB. This 1 dB difference makes the KLH Concord a more sensitive speaker compared to Triangle Borea BR09, 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 Borea BR09 has a max power handling value of 170 watts RMS, 55 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
Concord features Binding post type posts and Borea BR09 has a Binding post type posts. None of these speakers feature bi-amping/bi-wiring.
KLH Concord's 5-Way post terminals
Triangle Borea BR09's Binding 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 KLH Concord's and Triangle Borea BR09'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 Triangle Borea BR09 has external dimensions of 1095.0 x 206.0 x 314.0mm (43.1 x 8.1 x 12.3inch).
Triangle Borea BR09 is 6mm narrower and 66mm less deeper than KLH Concord but it is also 69mm taller.
Below you can see the front view size comparison of KLH Concord and Triangle Borea BR09 in scale.
Comparison image of KLH Concord and Triangle Borea BR09 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 KLH Concord is approximately 805.6cm2 / 124.9inch2 and base area of the Triangle Borea BR09 is approximately 646.8cm2 / 100.3inch2. The Concord requires 25% more surface area than the Borea BR09 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 Triangle Borea BR09 weighs 21.80kg / 48lbs. This makes the Borea BR09 7% heavier than the Concord.
Here is a comparison of how Concord and Borea BR09'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 loudspeaker
- Grille
- 4 Spike feet (w/ locking nut attached)
- 4 Protective discs
- 4 Rubber feet
- Port plug
- Manual
- ATTENTION! note
What's in the Box of Triangle Borea BR09?
Here are the items that come with the Borea BR09:
- 2 x Borea speakers
- 2 x protections grids
- 2 x pedestals
- 8 x screws
- 8 x adhesive rubber plots
- 8 x decoupling spikes
- 1 x user manual
 Max Input Power |
225 watts
vs
170 watts
|
Handle more power from your amplifier |
 Sensitivity |
94 dB
vs
93 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
6.5 inches
vs
6 inches
|
Larger woofer |
|
Low Frequency Response |
28 Hz
vs
35 Hz
|
Generates deeper bass |
 High Frequency Response |
23k Hz
vs
22k Hz
|
Generates higher frequency |
 Height |
1026mm
vs
1095mm
|
Easier to fit in smaller spaces |
 Price per pair* |
1000USD
vs
1850USD
|
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 |
|
Number of Woofers |
3
vs
2
|
More woofers |
 Base Surface Area |
646cm2
vs
805cm2
|
Takes less floor space |
| General |
KLH Concord |
Triangle Borea BR09 |
| Brand |
KLH |
Triangle |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
up to 225 watts |
up to 170 watts |
| Sensitivity |
94 dB |
92.5 dB |
| Impedance |
8 ohms |
8 ohms |
| Impedance |
n/a |
3.3 ohms |
| Frequency Response |
28-23k Hz |
35 - 22k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
3 |
| Woofer Size |
6.5" |
6" |
| Woofer Composition |
Kevlar |
fiberglass |
| Woofer Surround Material |
Butyl Rubber |
n/a |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
n/a |
dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
6" |
| Crossover Frequency |
n/a |
310Hz and 3900Hz |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
1026.0mm (40.4") |
1095.0mm (43.1") |
| Width |
212.0mm (8.3") |
206.0mm (8.1") |
| Depth |
380.0mm (15") |
314.0mm (12.4") |
| Weight |
20.45kg (45lbs) |
21.80kg (48lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Wood-grain vinyl |
n/a |
| Available Colors |
Black |
Light Oak, Walnut, Black, White |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
No |
Other |
|
|
| Parts Warranty |
10 Years |
5 Years |
| Labor Warranty |
10 Years |
5 Years |
These sit in different price classes - Triangle Borea BR09 costs roughly 1.9x 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 | A | KLH Concord digs deeper - 28Hz against 35Hz. A subwoofer would even that out. |
| Amplifier needs | evenly matched | Similar sensitivity (94dB vs 93dB) - both want much the same power. |
| Headroom | A | KLH Concord takes more power (225W vs 170W) - more in hand in a big room. |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Price | A | KLH Concord is cheaper - $1,000 against $1,850, about 46% less; arguably a different class. |
A KLH Concord B Triangle Borea BR09
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 Triangle Borea BR09 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 35Hz anyway, so judge these on the other rows instead. Think about the whole system, not just the speakers: the roughly $850 saved by taking the cheaper pair would buy a subwoofer or a better amplifier, and either usually does more for the sound than the difference between these two.
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.