In this review, we will be comparing The Fives and R-51M, two Bookshelf speakers by Klipsch The main difference between these two speakers is that the Klipsch The Fives is a Powered speaker which means that it has a built-in amplifier inside the speaker body so you don't need an external power amp or an integrated amp whereas the Klipsch R-51M is a Passive speaker so has to be matched with an amplifier to get any sound from it.
Let's have a brief look at the main features
of Klipsch The Fives and Klipsch R-51M first before getting into our more
detailed comparison.
Klipsch The Fives Key Specs
- 2-way Design
- 160-watt RMS( 320-watt Peak) Integrated Amplifier
- 1" Tractrix Horn Tweeter
- 4.5" Fiber-composite Woofer
- 50-25k Hz Frequency Response
- 24-bit Max Depth / 192 kHz Max Sample Rate
- Built-in 5.0 Bluetooth
- App Control Feature
- Weight:4.85kg
- Dimensions (H x W x D): 314.3" x 6.5" x 11.125"( 314.3 x 165.1 x 282.6mm )
Klipsch R-51M Key Specs
- 2-way Design
- 1" Tractrix Horn Tweeter
- 5.25" Copper-spun IMG Woofer
- 62-21k Hz Frequency Response
- 93 dB Sensitivity
- Impedance: 8ohms
- Power Range:Up to 85watts
- Weight:5.00kg
- Dimensions (H x W x D): 338.0" x 7.0" x 8.4"( 338.0 x 178.0 x 215.0mm )
In the following sections, we will get into more detail in order to better understand how the Klipsch The Fives and Klipsch R-51M compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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Drivers
Both The Fives and R-51M are 2-way speakers.
| Driver |
Klipsch The Fives |
Klipsch R-51M |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 4.5-inch
|
1 x 5.25-inch
|
The Fives features a 1" Titanium Tractrix Horn Tweeter and 1 x 4.5" Fiber-composite Woofer . On the other hand, the R-51M features a 1" Tractrix Horn Tweeter and 1 x 5.25" Copper-spun IMG Woofer with a Crossover frequency at 1660Hz.
Frequency Response
The Fives has a frequency range of 50-25k Hz whereas R-51M has a frequency range of 62-21k Hz. With a minimum frequency of 50Hz, the The Fives can go significantly deeper on the low side and provide stronger bass compared to the R-51M's min frequency of 62Hz.
Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers in the Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf Speakers
None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.
Cabinet Type and Port Position
Both The Fives and R-51M have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.
If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.
Physical Specs
Size of a speaker can sometimes become 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 The Fives's and Klipsch R-51M's external dimensions. Klipsch The Fives has external dimensions of 314.3 x 165.1 x 282.6mm ( 12.375 x 6.5 x 11.125inch) whereas Klipsch R-51M has external dimensions of 338.0 x 178.0 x 215.0mm ( 13.3 x 7.0 x 8.4inch) .
Klipsch The Fives is 12.9mm narrower and 23.7mm shorter than Klipsch R-51M but it is also 67.6mm deeper.
Below you can see the front view size comparison of Klipsch The Fives and Klipsch R-51M in scale.
Comparison image of Klipsch The Fives and Klipsch R-51M 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 Klipsch The Fives is approximately 466.6cm2 / 72.3inch2 and base area of the Klipsch R-51M is approximately 382.7cm2 / 59.3inch2. The The Fives requires 22% more surface area than the R-51M which gives it a small disadvantage on placement in tight spaces.
Here is an another comparison that shows both speakers on a BDI Octave Media Cabinet, next to a standard size amplifier and turntable in scale:
Size Comparison image of Klipsch The Fives and Klipsch R-51M on a Media Console
What's in the Box of Klipsch The Fives?
Here are the items that are included inside the box of The Fives:
Powered speaker (right) Passive speaker (left) 6-inch AC power cord 13-feet Proprietary speaker cable 58-inch HDMI cable 59-inch USB-A to USB-B cable Remote control 2 AAA batteries Instruction Booklet Need Help? card
What's in the Box of Klipsch R-51M?
Here are the items that come with the R-51M:
2 Bookshelf loudspeakers 2 Grilles (installed) 8 Self-adhesive rubber feet Quick Setup Guide Important Safety Instructions Warranty Information