In this review, we will be comparing AK7 and F328Be, two Passive Floor-standing speakers from Klipsch and Revel.
Let's have a brief look at the main features
of Klipsch Klipschorn AK7 and Revel PerformaBe F328Be first before getting into our more
detailed comparison.
| Key Specs | Klipsch Klipschorn AK7 | Revel PerformaBe F328Be |
|---|
| Design | 3-way | 3-way |
|---|
| Tweeter | 1" Tractrix horn | 1" |
|---|
| Midrange | 3" | 5.25" |
|---|
| Woofer | 15" fiber-composite with a trihedral exponential folded horn | 3 x 8.0" Aluminum |
|---|
| Frequency response | 34-19k Hz | 26-40k Hz |
|---|
| Sensitivity | 103 dB | 91 dB |
|---|
| Impedance | 8 ohms | 8 ohms |
|---|
| Power range | up to 100 watts | 50-300 watts |
|---|
| Weight | 118.18kg / 260lbs | 51.18kg / 112.6lbs |
|---|
| Dimensions (H x W x D) | 53" x 31-1/4" x 28-1/4"
1347.0 x 794.0 x 718.0mm | 50-15/16" x 13-1/2" x 17-5/8"
1294.0 x 343.0 x 448.0mm |
|---|
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 AK7 and F328Be are 3-way speakers.
Klipsch Klipschorn AK7Revel PerformaBe F328Be
TweeterMidrangeWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
Klipsch Klipschorn AK7 |
Revel PerformaBe F328Be |
|
Driver Setup
|
3-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
1 x 3-inch |
1 x 5.25-inch |
|
Woofer
|
1 x 15-inch
|
3 x 8.0-inch
|
AK7 features a 1" polyimide diaphragm compression Tractrix horn Tweeter, a 3" Midrange and 1 x 15" fiber-composite with a trihedral exponential folded horn Woofer with a Crossover frequency at 380Hz - 290Hz. On the other hand, the F328Be features a 1" Tweeter, a 5.25" Midrange and 3 x 8.0" Aluminum Woofer.
Frequency Response
AK7 has a frequency range of 34-19k Hz whereas F328Be has a frequency range of 26-40k Hz. With a minimum frequency of 26Hz, the F328Be can go significantly deeper on the low side and provide stronger bass compared to the AK7's min frequency of 34Hz.
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
AK7 and F328Be have the same Impedance of 8 ohms but where they differ is the sensitivity levels. AK7 sensitivity is rated at 103 dB and the F328Be's is at 91 dB. This 12 dB difference makes the Klipsch Klipschorn AK7 a more sensitive speaker compared to Revel PerformaBe F328Be, 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.
F328Be can handle a max power of 300 watts RMS, whereas AK7 has a max power handling value of 100 watts RMS, 200 watts less than the F328Be.
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
Both AK7 and F328Be features dual binding post speaker terminals for bi-amping or bi-wiring.
Klipsch Klipschorn AK7's Binding post terminals allows Bi-amping or bi-wiring
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 Klipsch Klipschorn AK7's and Revel PerformaBe F328Be's external dimensions. Klipsch Klipschorn AK7 has external dimensions of 1347.0 x 794.0 x 718.0mm (53 x 31-1/4 x 28-1/4inch) whereas Revel PerformaBe F328Be has external dimensions of 1294.0 x 343.0 x 448.0mm (50-15/16 x 13-1/2 x 17-5/8inch).
Klipsch Klipschorn AK7 is clearly the larger of the two speakers. Its body is 451mm wider, 53mm taller and 270mm deeper than Revel PerformaBe F328Be.
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 Klipsch Klipschorn AK7 is approximately 5700.9cm2 / 883.6inch2 and base area of the Revel PerformaBe F328Be is approximately 1536.6cm2 / 238.2inch2. The AK7 requires 271% more surface area than the F328Be 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 Klipsch Klipschorn AK7 weighs 118.18kg / 260lbs and the Revel PerformaBe F328Be weighs 51.18kg / 112.6lbs. This makes the AK7 131% heavier than the F328Be.
Here is a comparison of how AK7 and F328Be'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 Klipsch Klipschorn AK7?
Here are the items that are included inside the box of AK7:
- 2 Loudspeaker cabinets
- 2 Subwoofer cabinets
- 2 Grilles
- Owners Manual
- Congratulations letter
- Klipsch brochure
What's in the Box of Revel PerformaBe F328Be?
Here are the items that come with the F328Be:
- Floorstanding loudspeaker
- Grille
- 4 Spike feet
- 4 Locking rings
- 4 Washers
- 2 Terminal jumpers (pre-installed)
- 2 Foam port plugs
- Owners Manual
 Sensitivity |
103 dB
vs
91 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
15 inches
vs
8.0 inches
|
Larger woofer |
 Max Input Power |
300 watts
vs
100 watts
|
Handle more power from your amplifier |
|
Number of Woofers |
3
vs
1
|
More woofers |
|
Low Frequency Response |
26 Hz
vs
34 Hz
|
Generates deeper bass |
 High Frequency Response |
40k Hz
vs
19k Hz
|
Generates higher frequency |
 Height |
1294mm
vs
1347mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1536cm2
vs
5700cm2
|
Takes less floor space |
 Price per pair* |
17600USD
vs
17998USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Klipsch Heritage Klipschorn AK7 |
Revel PerformaBe F328Be |
| Brand |
Klipsch |
Revel |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
up to 100 watts |
50-300 watts |
| Sensitivity |
103 dB |
91 dB |
| Impedance |
8 ohms |
8 ohms |
| Impedance |
4 ohms |
n/a |
| Frequency Response |
34-19k Hz |
26-40k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
3 |
| Woofer Size |
15" |
8.0" |
| Woofer Composition |
fiber-composite with a trihedral exponential folded horn |
Aluminum |
| Woofer Surround Material |
Rubber |
n/a |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Tractrix horn |
n/a |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
3" |
5.25" |
| Crossover Frequency |
380Hz - 290Hz |
n/a |
| Firing Direction |
n/a |
rear |
Physical Specs |
|
|
| Height |
1347.0mm (53") |
1294.0mm (50.9") |
| Width |
794.0mm (31.3") |
343.0mm (13.5") |
| Depth |
718.0mm (28.3") |
448.0mm (17.6") |
| Weight |
118.18kg (260lbs) |
51.18kg (112.6lbs) |
| Enclosure |
Acoustic Suspension |
Bass Reflex |
| Finish |
MDF/Wood veneer |
n/a |
| Available Colors |
American Auburn, Black Ash, American Walnut |
Gloss Black |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
Yes |
Yes |
Other |
|
|
| Parts Warranty |
10 Years |
5 Years |
| Labor Warranty |
10 Years |
5 Years |
A generation apart: Klipsch Klipschorn AK7 is the newer design, against a 2017 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 |
Revel PerformaBe F328Be digs deeper - 26Hz against 34Hz. A subwoofer would even that out. |
| Amplifier needs |
A |
Klipsch Klipschorn AK7 is more sensitive (103dB vs 91dB), so it goes louder on the same amplifier. |
| Headroom |
B |
Revel PerformaBe F328Be takes more power (300W vs 100W) - more in hand in a big room. |
| Size |
depends |
Revel PerformaBe F328Be is easier to place; Klipsch Klipschorn AK7 is bigger, which usually goes with fuller bass. Your room decides. |
| Cabinet |
depends |
Sealed vs Ported. Sealed is tighter and happier near a wall; ported digs lower but wants space behind it. |
| Expandability |
depends |
Klipsch Klipschorn AK7: bi-amping; Revel PerformaBe F328Be: bi-amping. Klipsch Klipschorn AK7 sits in a wider range (12 models), so a matched surround system is easier later. |
| Price |
evenly matched |
Much the same money ($17,998 vs $17,600 a pair). |
A Klipsch Klipschorn AK7
B Revel PerformaBe F328Be
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?
Revel PerformaBe F328Be 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 34Hz anyway, so judge these on the other rows instead. In a large or open-plan room, Klipsch Klipschorn AK7 has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, Revel PerformaBe F328Be 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.