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SVS Ultra Center vs KEF R2c Comparison

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SVS Ultra Center

Passive Center Channel | 45-32k Hz

SVS Ultra Center
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KEF R2c

Passive Center Channel | 74-28k Hz

KEF R2c
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SVS Ultra Center SVS Ultra Center
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KEF R2c KEF R2c
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SVS Ultra Center
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KEF R2c
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SVS Ultra Center vs KEF R2c Speaker Comparison

In this review, we will be comparing Ultra Center and R2c, two Passive Center Channel speakers from SVS and KEF.

Let's have a brief look at the main features of SVS Ultra Center and KEF R2c first before getting into our more detailed comparison.

SVS Ultra Center Key Specs

  • 3-way Design
  • 1" Dome Tweeter
  • 4" Midrange
  • 2 x 6.5" composite glass-fiber Woofer
  • 45-32k Hz Frequency Response
  • 87 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:20-225watts
  • Weight:14.09kg
  • Dimensions (H x W x D): 207.0" x 22-1/16" x 11-3/16"( 207.0 x 561.0 x 285.0mm )

KEF R2c Key Specs

  • 3-way Design
  • 1" Dome Tweeter
  • 5" Midrange
  • 2 x 5.25" Hybrid Aluminum Woofer
  • 5" Midrange
  • 74-28k Hz Frequency Response
  • 87 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:15-200watts
  • Weight:16.90kg
  • Dimensions (H x W x D): 177.0" x 21-11/16" x 12-7/16"( 177.0 x 551.0 x 316.0mm )

What size room are the SVS Ultra Center and KEF R2c 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* SVS Ultra Center KEF R2c
Near-field Poor Poor
Small Room Poor Average
Mid-size Room Good Good
Large Room Good Average
Very Large Room Average 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.)

In the following sections, we will get into more detail in order to better understand how the SVS Ultra Center and KEF R2c compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.


**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.


Drivers

Both Ultra Center and R2c are 3-way speakers.

Driver SVS Ultra Center KEF R2c
Driver Setup 3-way 3-way
Tweeter 1-inch 1-inch
Midrange 1 x 4-inch 1 x 5-inch
Woofer 2 x 6.5-inch 2 x 5.25-inch

Ultra Center features a 1" aluminum Dome Tweeter , a 4" Midrange and 2 x 6.5" composite glass-fiber Woofer with a Crossover frequency at 500Hz and 2200Hz. On the other hand, the R2c features a 1" aluminum Dome Tweeter , a 5" Midrange and 2 x 5.25" Hybrid Aluminum Woofer with a Crossover frequency at 400Hz and 2900Hz.

Frequency Response

Ultra Center has a frequency range of 45-32k Hz whereas R2c has a frequency range of 74-28k Hz. With a minimum frequency of 45Hz, the Ultra Center can go significantly deeper on the low side and provide stronger bass compared to the R2c's min frequency of 74Hz.

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

Ultra Center
R2c
Min
Average
Max
High Frequency

Center Channel Speakers

SVS Ultra Center
KEF R2c
Min
Average
Max

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

Ultra Center and R2c have the same Impedance of 8 ohms and their sensitivity is also same at 87 dB.

Sensitivity

Center Channel Speakers

Ultra Center
R2c
Min
Average
Max

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.

Ultra Center can handle a max power of 225 watts RMS from the amp the whereas R2c has a max power handling value of 200 watts RMS, 25 watts less than the Ultra Center.

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

Both Ultra Center and R2c features dual binding post speaker terminals for bi-amping or bi-wiring.

SVS Ultra Center Terminals
SVS Ultra Center's 5-Way post terminals allows Bi-amping or bi-wiring

KEF R2c Terminals
KEF R2c's Binding post terminals allows Bi-amping or bi-wiring

Cabinet Type and Port Position

Both Ultra Center and R2c 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 SVS Ultra Center's and KEF R2c's external dimensions. SVS Ultra Center has external dimensions of 207.0 x 561.0 x 285.0mm ( 8-1/8 x 22-1/16 x 11-3/16inch) whereas KEF R2c has external dimensions of 177.0 x 551.0 x 316.0mm ( 6-15/16 x 21-11/16 x 12-7/16inch) .

KEF R2c is 10mm narrower and 30mm shorter than SVS Ultra Center but it is also 31mm 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 SVS Ultra Center is approximately 1598.9cm2 / 247.8inch2 and base area of the KEF R2c is approximately 1741.2cm2 / 269.9inch2. The Ultra Center requires 8% less surface area than the R2c 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 SVS Ultra Center weighs 14.09kg / 31lbs and the KEF R2c weighs 16.90kg / 37.2lbs. This makes the R2c 20% heavier than the Ultra Center.

Here is a comparison of how Ultra Center and R2c's weights compare with the average, max and min weights in Passive Center Channel class.

Weight
All Center Channel Speakers
SVS Ultra Center
KEF R2c
Min
Average
Max

What's in the Box of SVS Ultra Center?

Here are the items that are included inside the box of Ultra Center:
  • Center channel loudspeaker
  • Grille
  • 2 Terminal jumpers (pre-installed)
  • 4 Rubber feet
  • Owners Manual
  • SVS brochure
  • Online Product Registration Card
  • What's in the Box of KEF R2c?

    Here are the items that come with the R2c:
  • Center-channel loudspeaker
  • Grille
  • 4 Self-adhesive rubber feet
  • User Manual
  • Warranty Information

  • Reasons to choose SVS Ultra Center over KEF R2c
    Max Input Power 225 watts vs 200 watts Handle more power from your amplifier
    Woofer Size 6.5 inches vs 5.25 inches Larger woofer
    Low Frequency Response 45 Hz vs 74 Hz Generates deeper bass
    High Frequency Response 32k Hz vs 28k Hz Generates higher frequency
    Base Surface Area 1598cm2 vs 1741cm2 Takes less floor space
    Price per pair* 799USD vs 1300USD costs less (*prices may change depending on the seller, location and time)

    Reasons to choose KEF R2c over SVS Ultra Center

    Height 177mm vs 207mm Easier to fit in smaller spaces
    SVS Ultra Center vs KEF R2c Specs Table
    Detailed comparison of specifications
    General SVS Ultra Center KEF R2c
    Brand SVS KEF
    Speaker Type Center channel speaker Center channel speaker
    Power Range 20-225 watts 15-200 watts
    Sensitivity 87 dB 87 dB
    Impedance 8 ohms 8 ohms
    Impedance n/a 3.2 ohms
    Frequency Response 45-32k Hz 74-28k Hz
    Drivers
    Woofer Quantity 2 2
    Woofer Size 6.5" 5.25"
    Woofer Composition composite glass-fiber Hybrid Aluminum
    Woofer Surround Material Rubber Rubber
    Tweeter Size 1" 1"
    Tweeter Type Dome Dome
    Aimable Tweeter No No
    Midrange Driver 4" 5"
    Crossover Frequency 500Hz and 2200Hz 400Hz and 2900Hz
    Firing Direction rear rear
    Physical Specs
    Height 207.0mm (8.1") 177.0mm (7")
    Width 561.0mm (22.1") 551.0mm (21.7")
    Depth 285.0mm (11.2") 316.0mm (12.4")
    Weight 14.09kg (31lbs) 16.90kg (37.2lbs)
    Enclosure Bass Reflex Acoustic Suspension
    Available Colors Black Oak,Piano Gloss Black,Piano Gloss White Black Gloss, White Gloss, Walnut
    Grille Yes Yes
    Moisture Resistancy No No
    Connections
    Biamp Inputs Yes Yes
    Other
    Parts Warranty 5 Years 5 Years
    Labor Warranty 5 Years 5 Years

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