In this review, we will be comparing Q650c and Uni-Fi Reference UCR52, two Passive Center Channel speakers from KEF and ELAC. Let's have a brief look at the main features
of KEF Q650c and ELAC Uni-Fi Ref UCR52 first before getting into our more
detailed comparison.
What size room are the KEF Q650c and ELAC Uni-Fi Ref UCR52 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 Q650c and ELAC Uni-Fi Ref UCR52 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
One of the fundamental differences between these two speakers is that Q650c is a 2-way design whereas the Uni-Fi Reference UCR52 is a 3-way speaker. 3-way designs utilize a midrange driver in addition to the tweeter and woofer on 2-way designs. Designing a crossover for a 3-way speaker is a complicated process and generally increases the overall cost of the speaker.
| Driver |
KEF Q650c |
ELAC Uni-Fi Ref UCR52 |
|
Driver Setup
|
2-way
|
3-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
1 x 4-inch |
|
Woofer
|
2 x 6.5-inch
|
2 x 5.25-inch
|
Q650c features a 1" vented aluminum Dome Tweeter and 2 x 6.5" aluminum Woofer with a Crossover frequency at 2500Hz. On the other hand, the Uni-Fi Reference UCR52 features a 1" soft dome Tweeter , a 4" Midrange and 2 x 5.25" aluminum Woofer .
Frequency Response
Q650c has a frequency range of 64-28k Hz whereas Uni-Fi Reference UCR52 has a frequency range of 47-35k Hz. With a minimum frequency of 47Hz, the Uni-Fi Reference UCR52 can go significantly deeper on the low side and provide stronger bass compared to the Q650c's min frequency of 64Hz.
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
Q650c is a 8 ohms speaker compared to the Uni-Fi Reference UCR52 which has a nominal impedance of 6 ohms.
These two speakers also have different sensitivity levels. Q650c sensitivity is rated at 87 dB and the Uni-Fi Reference UCR52's is rated at 85 dB. This 2 dB difference makes the KEF Q650c a more sensitive speaker compared to ELAC Uni-Fi Ref UCR52, 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.
Q650c can handle a max power of 150 watts RMS from the amp the whereas Uni-Fi Reference UCR52 has a max power handling value of 140 watts RMS, 10 watts less than the Q650c.
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
Q650c features Binding post type posts and Uni-Fi Reference UCR52 has a Binding post type posts. None of these speakers feature bi-amping/bi-wiring.
KEF Q650c's Binding post terminals
ELAC Uni-Fi Ref UCR52'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 Q650c's and ELAC Uni-Fi Ref UCR52's external dimensions. KEF Q650c has external dimensions of 212.0 x 631.0 x 304.0mm ( 8-5/16 x 24-13/16 x 11-15/16inch) whereas ELAC Uni-Fi Ref UCR52 has external dimensions of 188.0 x 531.0 x 332.0mm ( 7-3/8 x 20-7/8 x 13-1/16inch) .
ELAC Uni-Fi Ref UCR52 is 100mm narrower and 24mm shorter than KEF Q650c but it is also 28mm deeper.
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 Q650c is approximately 1918.2cm2 / 297.3inch2 and base area of the ELAC Uni-Fi Ref UCR52 is approximately 1762.9cm2 / 273.2inch2. The Q650c requires 9% more surface area than the Uni-Fi Reference UCR52 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 KEF Q650c weighs 13.64kg / 30lbs and the ELAC Uni-Fi Ref UCR52 weighs 13.20kg / 29lbs. This makes the Q650c 3% heavier than the Uni-Fi Reference UCR52.
Here is a comparison of how Q650c and Uni-Fi Reference UCR52'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 Q650c?
Here are the items that are included inside the box of Q650c:
Center-channel loudspeaker 4 Self-adhesive rubber feet Owners Manual Warranty Information
What's in the Box of ELAC Uni-Fi Ref UCR52?
Here are the items that come with the Uni-Fi Reference UCR52:
Center-channel loudspeakerGrille2 Jumper-bars (pre-installed)Operating Instructions
 Max Input Power |
150 watts
vs
140 watts
|
Handle more power from your amplifier |
 Sensitivity |
87 dB
vs
85 dB
|
Play louder with same amount of amplification power |
 Nominal Impedance |
8 ohms
vs
6 ohms
|
Less selective with amplifiers |
 Woofer Size |
6.5 inches
vs
5.25 inches
|
Larger woofer |
 Passive Radiator |
one 6.5-inch
vs
None
|
Increases the bass performance |
 Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
| Low Frequency Response |
47 Hz
vs
64 Hz
|
Generates deeper bass |
 High Frequency Response |
35k Hz
vs
28k Hz
|
Generates higher frequency |
 Height |
188mm
vs
212mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1762cm2 (531x332mm)
vs
1918cm2 (631x304mm)
|
Takes less floor space |
 Price per pair* |
700USD
vs
750USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
KEF Q650c |
ELAC Uni-Fi Reference UCR52 |
| Brand |
KEF |
ELAC |
| Speaker Type |
Center channel speaker |
Center channel speaker |
| Power Range |
15-150 watts |
up to 140 watts |
| Sensitivity |
87 dB |
85 dB |
| Impedance |
8 ohms |
6 ohms |
| Impedance |
4.2 ohms |
n/a |
| Frequency Response |
64-28k Hz |
47-35k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
6.5" |
5.25" |
| Woofer Composition |
aluminum |
aluminum |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Dome |
soft dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
4" |
| Crossover Frequency |
2500Hz |
n/a |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
212.0mm (8.3") |
188.0mm (7.4") |
| Width |
631.0mm (24.8") |
531.0mm (20.9") |
| Depth |
304.0mm (12") |
332.0mm (13.1") |
| Weight |
13.64kg (30lbs) |
13.20kg (29lbs) |
| Enclosure |
Passive Radiator |
Bass Reflex |
| Finish |
n/a |
MDF/Wood-grain vinyl |
| Available Colors |
Satin White, Satin Black, Walnut |
Satin Black with Walnut Sides, Satin White with Oak Sides |
| Grille |
optional |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 Years |
3 Years |
| Labor Warranty |
5 Years |
3 Years |