In this review, we will be comparing Imagine X1T and Concord, two Passive Floor-standing speakers from PSB and KLH.
Let's have a brief look at the main features
of PSB Imagine X1T and KLH Concord first before getting into our more
detailed comparison.
| Key Specs | PSB Imagine X1T | KLH Concord |
|---|
| Brand | PSB
Canada · founded 1972 | KLH
United States · founded 1957 |
|---|
| Design | 2-way | 2-way |
|---|
| Tweeter | 1" Dome | 1" |
|---|
| Woofer | 2 x 5.25" Clay/Ceramic/Poly | 2 x 6.5" Kevlar |
|---|
| Frequency response | 35-23k Hz | 28-23k Hz |
|---|
| Sensitivity | 90 dB | 94 dB |
|---|
| Impedance | 8 ohms | 8 ohms |
|---|
| Power range | 20-200 watts | up to 225 watts |
|---|
| Weight | 17.30kg / 38.1lbs | 20.45kg / 45lbs |
|---|
| Dimensions (H x W x D) | 34-1/2" x 8-1/4" x 14-7/8"
877.0 x 210.0 x 378.0mm | 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
Both Imagine X1T and Concord are 2-way speakers.
PSB Imagine X1TKLH 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 |
PSB Imagine X1T |
KLH Concord |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 5.25-inch
|
2 x 6.5-inch
|
Imagine X1T features a 1" titanium with neodymium magnets Dome Tweeter and 2 x 5.25" Clay/Ceramic/Poly Woofer with a Crossover frequency at 1800Hz. On the other hand, the Concord features a 1" anodized aluminum Tweeter and 2 x 6.5" Kevlar Woofer.
Frequency Response
Imagine X1T has a frequency range of 35-23k 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 Imagine X1T'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
Imagine X1T and Concord have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Imagine X1T sensitivity is rated at 90 dB and the Concord's is at 94 dB. This 4 dB difference makes the KLH Concord a more sensitive speaker compared to PSB Imagine X1T, 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 Imagine X1T has a max power handling value of 200 watts RMS, 25 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
Imagine X1T 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.
PSB Imagine X1T's 5-Way post terminals allows Bi-amping or 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 PSB Imagine X1T's and KLH Concord's external dimensions. PSB Imagine X1T has external dimensions of 877.0 x 210.0 x 378.0mm (34-1/2 x 8-1/4 x 14-7/8inch) 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 clearly the larger of the two speakers. Its body is 2mm wider, 149mm taller and 2mm deeper than PSB Imagine X1T.
Below you can see the front view size comparison of PSB Imagine X1T and KLH Concord in scale.
Comparison image of PSB Imagine X1T 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 PSB Imagine X1T is approximately 793.8cm2 / 123.0inch2 and base area of the KLH Concord is approximately 805.6cm2 / 124.9inch2. The Imagine X1T requires 1% 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 PSB Imagine X1T weighs 17.30kg / 38.1lbs and the KLH Concord weighs 20.45kg / 45lbs. This makes the Concord 18% heavier than the Imagine X1T.
Here is a comparison of how Imagine X1T 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 PSB Imagine X1T?
Here are the items that are included inside the box of Imagine X1T:
- Floor-standing speaker
- Grille
- 4 Rubber feet
- 4 Spiked Feet
- Wrench
- Quick Start Guide
- Warranty Card
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
 Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
 Height |
877mm
vs
1026mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
793cm2
vs
805cm2
|
Takes less floor space |
 Max Input Power |
225 watts
vs
200 watts
|
Handle more power from your amplifier |
 Sensitivity |
94 dB
vs
90 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
35 Hz
|
Generates deeper bass |
 Price per pair* |
1000USD
vs
1200USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
PSB Imagine X1T |
KLH Concord |
| Brand |
PSB |
KLH |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
20-200 watts |
up to 225 watts |
| Sensitivity |
90 dB |
94 dB |
| Impedance |
8 ohms |
8 ohms |
| Impedance |
4 ohms |
n/a |
| Frequency Response |
35-23k Hz |
28-23k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
5.25" |
6.5" |
| Woofer Composition |
Clay/Ceramic/Poly |
Kevlar |
| Woofer Surround Material |
Rubber |
Butyl Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Dome |
n/a |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
1800Hz |
n/a |
| Firing Direction |
front |
n/a |
Physical Specs |
|
|
| Height |
877.0mm (34.5") |
1026.0mm (40.4") |
| Width |
210.0mm (8.3") |
212.0mm (8.3") |
| Depth |
378.0mm (14.9") |
380.0mm (15") |
| Weight |
17.30kg (38.1lbs) |
20.45kg (45lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Wood-grain |
MDF/Wood-grain vinyl |
| Available Colors |
Black |
Black |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
Yes |
No |
Other |
|
|
| Parts Warranty |
5 Years |
10 Years |
| Labor Warranty |
5 Years |
10 Years |
A generation apart: KLH Concord is the newer design, against a 2013 model. Newer is not automatically better, but the older one is more likely to be discounted or near run-out.
| Area | Better | Why |
|---|
| Bass | B | KLH Concord digs deeper - 28Hz against 35Hz. A subwoofer would even that out. |
| Amplifier needs | B | KLH Concord is more sensitive (94dB vs 90dB), so it goes louder on the same amplifier. |
| Headroom | evenly matched | Similar power handling (200W vs 225W). |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Expandability | A | PSB Imagine X1T: bi-amping. |
| Price | B | KLH Concord is cheaper - $1,000 against $1,200, about 17% less. |
A PSB Imagine X1T 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 has the edge on paper, though the margin is not large. The rows marked "depends" may matter more to you than the score does. 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. 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.