In this review, we will be comparing Q250c and RP-450C, two Passive Center Channel speakers from KEF and Klipsch. Let's have a brief look at the main features
of KEF Q250c and Klipsch RP-450C first before getting into our more
detailed comparison.
What size room are the KEF Q250c and Klipsch RP-450C 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:
In the following sections, we will get into more detail in order to better understand how the KEF Q250c and Klipsch RP-450C 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 Q250c and RP-450C are 2-way speakers.
| Driver |
KEF Q250c |
Klipsch RP-450C |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5.25-inch
|
4 x 5.25-inch
|
Q250c features a 1" vented aluminum Dome Tweeter and 1 x 5.25" aluminum Woofer with a Crossover frequency at 2500Hz. On the other hand, the RP-450C features a 1" titanium Tractrix horn Tweeter and 4 x 5.25" Cerametallic cone Woofer .
Frequency Response
Q250c has a frequency range of 68-28k Hz whereas RP-450C has a frequency range of 58-25k Hz. With a minimum frequency of 58Hz, the RP-450C can go significantly deeper on the low side and provide stronger bass compared to the Q250c's min frequency of 68Hz.
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 Center Channel class in our database.
Low Frequency
Center Channel Speakers
High Frequency
Center Channel 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.
Impedance and Sensitivity
Q250c and RP-450C have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Q250c sensitivity is rated at 87 dB and the RP-450C's is at 97 dB. This 10 dB difference makes the Klipsch RP-450C a more sensitive speaker compared to KEF Q250c, hence will play louder with the same amount of watts.
Sensitivity
Center Channel Speakers
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. While using an amplifier within this range ensures the nominal performance , inputting a power that is higher than the max wattage can result in a damaged speaker.
Q250c can handle a max power of 150 watts RMS from the amp the whereas Q250c has a max power handling value of 100 watts RMS , 50 watts less than the RP-450C.
Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker
compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters
such as Impedance, sensitivity and system efficiencies.
Input Type and Bi-Amping / Bi-Wiring
Q250c features Binding post type posts and RP-450C has a Binding post type posts. None of these speakers feature bi-amping/bi-wiring.
Klipsch RP-450C's Binding post terminals
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 KEF Q250c's and Klipsch RP-450C's external dimensions. KEF Q250c has external dimensions of 181.0 x 526.0 x 216.0mm ( 7-1/8 x 20-11/16 x 8-1/2inch) whereas Klipsch RP-450C has external dimensions of 174.0 x 791.0 x 370.0mm ( 6-13/16 x 31-1/8 x 14-9/16inch) .
KEF Q250c is 265mm narrower and 154mm less deeper than Klipsch RP-450C but it is also 7mm taller.
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 KEF Q250c is approximately 1136.2cm2 / 176.1inch2 and base area of the Klipsch RP-450C is approximately 2926.7cm2 / 453.6inch2. The Q250c requires 61% less surface area than the RP-450C 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 KEF Q250c weighs 7.50kg / 16.5lbs and the Klipsch RP-450C weighs 16.23kg / 35.7lbs. This makes the RP-450C 116% heavier than the Q250c.
Here is a comparison of how Q250c and RP-450C's weights compare with the average, max and min weights in Passive Center Channel class.
Weight
All Center Channel Speakers
What's in the Box of KEF Q250c?
Here are the items that are included inside the box of Q250c:
Center-channel loudspeaker 4 Self-adhesive rubber feet Owners Manual Warranty Information
What's in the Box of Klipsch RP-450C?
Here are the items that come with the RP-450C:
Center-channel loudspeakerDetachable magnetic grille4 Rubber feetUser ManualWarranty InformationImportant Safety Instructions
 High Frequency Response |
28k Hz
vs
25k Hz
|
Generates higher frequency |
 Passive Radiator |
one 6.5-inch
vs
None
|
Increases the bass performance |
 Base Surface Area |
1136cm2 (526x216mm)
vs
2926cm2 (791x370mm)
|
Takes less floor space |
 Price per pair* |
600USD
vs
650USD
|
costs less (*prices may change depending on the seller, location and time) |
 Max Input Power |
150 watts
vs
100 watts
|
Handle more power from your amplifier |
 Sensitivity |
97 dB
vs
87 dB
|
Play louder with same amount of amplification power |
 Number of Woofers |
4
vs
1
|
More woofers |
| Low Frequency Response |
58 Hz
vs
68 Hz
|
Generates deeper bass |
 Height |
174mm
vs
181mm
|
Easier to fit in smaller spaces |
| General |
KEF Q250c |
Klipsch Reference Premiere RP-450C |
| Brand |
KEF |
Klipsch |
| Speaker Type |
Center channel speaker |
Center channel speaker (Ebony) |
| Power Range |
10-100 watts |
up to 150 watts |
| Sensitivity |
87 dB |
97 dB |
| Impedance |
8 ohms |
8 ohms |
| Impedance |
3.4 ohms |
n/a |
| Frequency Response |
68-28k Hz |
58-25k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
4 |
| Woofer Size |
5.25" |
5.25" |
| Woofer Composition |
aluminum |
Cerametallic cone |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Dome |
Tractrix horn |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
2500Hz |
n/a |
| Firing Direction |
n/a |
rear |
Physical Specs |
|
|
| Height |
181.0mm (7.1") |
174.0mm (6.9") |
| Width |
526.0mm (20.7") |
791.0mm (31.1") |
| Depth |
216.0mm (8.5") |
370.0mm (14.6") |
| Weight |
7.50kg (16.5lbs) |
16.23kg (35.7lbs) |
| Enclosure |
Passive Radiator |
Bass Reflex |
| Finish |
n/a |
polymer veneer |
| Available Colors |
Satin White, Satin Black, Walnut |
Walnut, Black |
| Grille |
optional |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |