In this review, we will be comparing Concord and Forte IV, two Passive Floor-standing speakers from KLH and Klipsch.
Let's have a brief look at the main features
of KLH Concord and Klipsch Forte IV first before getting into our more
detailed comparison.
| Key Specs | KLH Concord | Klipsch Forte IV |
|---|
| Design | 2-way | 3-way |
|---|
| Tweeter | 1" | 1" horn-loaded |
|---|
| Midrange | — | 1.75" |
|---|
| Woofer | 2 x 6.5" Kevlar | 12" Fibercomposite |
|---|
| Frequency response | 28-23k Hz | 38-20k Hz |
|---|
| Sensitivity | 94 dB | 99 dB |
|---|
| Impedance | 8 ohms | 8 ohms |
|---|
| Power range | up to 225 watts | up to 100 watts |
|---|
| Weight | 20.45kg / 45lbs | 32.73kg / 72lbs |
|---|
| 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 | 35-3/4" x 16-5/8" x 13"
909.0 x 423.0 x 331.0mm |
|---|
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
One of the fundamental differences between these two speakers is that Concord is a 2-way design whereas the Forte IV 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 ConcordKlipsch Forte IV
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 |
Klipsch Forte IV |
|
Driver Setup
|
2-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
1 x 1.75-inch |
|
Woofer
|
2 x 6.5-inch
|
1 x 12-inch
|
Concord features a 1" anodized aluminum Tweeter and 2 x 6.5" Kevlar Woofer. On the other hand, the Forte IV features a 1" titanium-diaphragm compression horn-loaded Tweeter, a 1.75" Midrange and 1 x 12" Fibercomposite Woofer.
Frequency Response
Concord has a frequency range of 28-23k Hz whereas Forte IV has a frequency range of 38-20k Hz. With a minimum frequency of 28Hz, the Concord can go significantly deeper on the low side and provide stronger bass compared to the Forte IV'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
Concord and Forte IV have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Concord sensitivity is rated at 94 dB and the Forte IV's is at 99 dB. This 5 dB difference makes the Klipsch Forte IV a more sensitive speaker compared to KLH Concord, 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 Forte IV has a max power handling value of 100 watts RMS, 125 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
Forte IV features 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
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 Klipsch Forte IV'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 Klipsch Forte IV has external dimensions of 909.0 x 423.0 x 331.0mm (35-3/4 x 16-5/8 x 13inch).
Klipsch Forte IV is 117mm shorter and 49mm less deeper than KLH Concord but it is also 211mm wider.
Below you can see the front view size comparison of KLH Concord and Klipsch Forte IV in scale.
Comparison image of KLH Concord and Klipsch Forte IV 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 Klipsch Forte IV is approximately 1400.1cm2 / 217.0inch2. The Concord requires 42% less surface area than the Forte IV 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 KLH Concord weighs 20.45kg / 45lbs and the Klipsch Forte IV weighs 32.73kg / 72lbs. This makes the Forte IV 60% heavier than the Concord.
Here is a comparison of how Concord and Forte IV'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 Klipsch Forte IV?
Here are the items that come with the Forte IV:
- 2 Floorstanding loudspeakers
- 2 Grilles
- 8 Self-adhesive rubber feet
- Owners Manual
- Congratulations letter
- Klipsch brochure
 Max Input Power |
225 watts
vs
100 watts
|
Handle more power from your amplifier |
 Number of Woofers |
2
vs
1
|
More woofers |
|
Low Frequency Response |
28 Hz
vs
38 Hz
|
Generates deeper bass |
 High Frequency Response |
23k Hz
vs
20k Hz
|
Generates higher frequency |
 Base Surface Area |
805cm2
vs
1400cm2
|
Takes less floor space |
 Price per pair* |
1000USD
vs
4998USD
|
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 |
 Sensitivity |
99 dB
vs
94 dB
|
Play louder with same amount of amplification power |
|
Woofer Size |
12 inches
vs
6.5 inches
|
Larger woofer |
 Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
 Passive Radiator |
rear-firing 15-inch
vs
None
|
Increases the bass performance |
 Height |
909mm
vs
1026mm
|
Easier to fit in smaller spaces |
| General |
KLH Concord |
Klipsch Heritage Forte IV |
| Brand |
KLH |
Klipsch |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
up to 225 watts |
up to 100 watts |
| Sensitivity |
94 dB |
99 dB |
| Impedance |
8 ohms |
8 ohms |
| Frequency Response |
28-23k Hz |
38-20k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
1 |
| Woofer Size |
6.5" |
12" |
| Woofer Composition |
Kevlar |
Fibercomposite |
| Woofer Surround Material |
Butyl Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
n/a |
horn-loaded |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
1.75" |
| Firing Direction |
n/a |
rear |
Physical Specs |
|
|
| Height |
1026.0mm (40.4") |
909.0mm (35.8") |
| Width |
212.0mm (8.3") |
423.0mm (16.7") |
| Depth |
380.0mm (15") |
331.0mm (13") |
| Weight |
20.45kg (45lbs) |
32.73kg (72lbs) |
| Enclosure |
Bass Reflex |
Passive Radiator |
| Finish |
MDF/Wood-grain vinyl |
MDF/Wood veneer |
| Available Colors |
Black |
Black |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
Yes |
Other |
|
|
| Parts Warranty |
10 Years |
10 Years |
| Labor Warranty |
10 Years |
10 Years |
These sit in different price classes - Klipsch Forte IV costs roughly 5x 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 38Hz. |
| Amplifier needs |
B |
Klipsch Forte IV is more sensitive (99dB vs 94dB), so it goes louder on the same amplifier. |
| Headroom |
A |
KLH Concord takes more power (225W vs 100W) - more in hand in a big room. |
| Size |
depends |
KLH Concord is easier to place; Klipsch Forte IV is bigger, which usually goes with fuller bass. Your room decides. |
| Cabinet |
depends |
Ported vs Passive Radiator. |
| Expandability |
B |
Klipsch Forte IV: bi-amping. |
| Price |
A |
KLH Concord is cheaper - $1,000 against $4,998, about 80% less; arguably a different class. |
A KLH Concord
B Klipsch Forte IV
depends neither is better in the abstract - it turns on your room, placement 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?
Neither runs away with it - they trade advantages. Let the "depends" rows and your own room settle it. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 38Hz anyway, so judge these on the other rows instead. In a large or open-plan room, Klipsch Forte IV 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.