In this review, we will be comparing two different types of speakers by Klipsch. Klipsch OJAS kO-R2 is a Floor-standing speaker whereas the Rebellion is a Bookshelf speaker.
Let's have a brief look at the main features
of Klipsch OJAS kO-R2 and Klipsch Heritage Rebellion first before getting into our more
detailed comparison.
| Key Specs | Klipsch OJAS kO-R2 | Klipsch Heritage Rebellion |
|---|
| Brand | Klipsch
United States · founded 1946 | Klipsch
United States · founded 1946 |
|---|
| Design | 2-way | 2-way |
|---|
| Tweeter | Compression Horn | Compression Horn |
|---|
| Woofer | 15" Paper | 8" Paper |
|---|
| Frequency response | 39-20k Hz | 60-20k Hz |
|---|
| Sensitivity | 97 dB | 95 dB |
|---|
| Impedance | 8 ohms | 8 ohms |
|---|
| Power range | up to 300 watts | up to 200 watts |
|---|
| Weight | 54.65kg / 120.2lbs | 14.51kg / 31.9lbs |
|---|
| Dimensions (H x W x D) | 45-1/2" x 25-3/8" x 22-1/4"
1156.0 x 645.0 x 565.0mm | 19-1/8" x 12" x 9-3/4"
485.0 x 305.0 x 247.0mm |
|---|
kO-R2 and Rebellion are members of Klipsch's Heritage series of speakers. Below you can find the loudspeakers from this series.
Klipsch Heritage Series
History
What size room are the Klipsch OJAS kO-R2 and Klipsch Heritage Rebellion speakers good for?
The size of the room in which you are planning to use these loudspeakers is an important decision
factor. Here we have compared their suitability to various sizes of environments considering their size
and max power parameters:
| Listening Environment* |
Klipsch OJAS kO-R2 |
Klipsch Heritage Rebellion |
| Near-field |
Are you nuts? |
Poor |
| Small Room |
Poor |
Average |
| Mid-size Room |
Average |
Good |
| Large Room |
Good |
Average |
| Very Large Room |
Good |
Poor |
(* Approximate Room sizes: Small < 100sq. ft / 9 m2,
Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: >
400 sq. ft / 36 m2.
Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual
listening experience changes depending on floor height, room shape, surface materials, listening
position, speaker locations, etc.)
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 kO-R2 and Rebellion are 2-way speakers.
Klipsch OJAS kO-R2Klipsch Heritage Rebellion
Woofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
Klipsch OJAS kO-R2 |
Klipsch Heritage Rebellion |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
-inch
|
-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 15-inch
|
1 x 8-inch
|
kO-R2 features a " K-706 driver Compression Horn Tweeter and 1 x 15" Paper Woofer with a Crossover frequency at 760Hz. On the other hand, the Rebellion features a " K-702 driver Compression Horn Tweeter and 1 x 8" Paper Woofer with a Crossover frequency at 715Hz.
Frequency Response
kO-R2 has a frequency range of 39-20k Hz whereas Rebellion has a frequency range of 60-20k Hz. With a minimum frequency of 39Hz, the kO-R2 can go significantly deeper on the low side and provide stronger bass compared to the Rebellion's min frequency of 60Hz.
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
kO-R2 and Rebellion have the same Impedance of 8 ohms but where they differ is the sensitivity levels. kO-R2 sensitivity is rated at 97 dB and the Rebellion's is at 95 dB. This 2 dB difference makes the Klipsch OJAS kO-R2 a more sensitive speaker compared to Klipsch Heritage Rebellion, 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.
kO-R2 can handle a max power of 300 watts RMS, whereas Rebellion has a max power handling value of 200 watts RMS, 100 watts less than the kO-R2.
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.
Klipsch Heritage Rebellion
Input Type and Bi-Amping / Bi-Wiring
kO-R2 features Binding post type posts and Rebellion has a Binding post type posts. None of these speakers feature bi-amping/bi-wiring.
Cabinet Type and Port Position
kO-R2 has a front firing port whereas Rebellion has a rear firing ports. Klipsch OJAS kO-R2's front-firing port gives more flexibility in placement in regards to proximity to walls compared to Klipsch Heritage Rebellion with its rear-firing port.
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 OJAS kO-R2's and Klipsch Heritage Rebellion's external dimensions. Klipsch OJAS kO-R2 has external dimensions of 1156.0 x 645.0 x 565.0mm (45-1/2 x 25-3/8 x 22-1/4inch) whereas Klipsch Heritage Rebellion has external dimensions of 485.0 x 305.0 x 247.0mm (19-1/8 x 12 x 9-3/4inch).
Klipsch OJAS kO-R2 is clearly the larger of the two speakers. Its body is 340mm wider, 671mm taller and 318mm deeper than Klipsch Heritage Rebellion.
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 OJAS kO-R2 is approximately 3644.3cm2 / 564.9inch2 and base area of the Klipsch Heritage Rebellion is approximately 753.4cm2 / 116.8inch2. The kO-R2 requires 384% more surface area than the Rebellion which gives it a small disadvantage on placement in tight spaces.