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Klipsch RP-450C vs Klipsch RP-4000F Comparison

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Klipsch RP-450C

Passive Center Channel | 58-25k Hz

Klipsch Reference Premiere RP-450C
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Klipsch RP-4000F

Passive Floor-standing | 37-25k Hz

Klipsch Reference Premiere RP-4000F
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Klipsch RP-450C Klipsch RP-450C
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Klipsch RP-4000F Klipsch RP-4000F
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Klipsch RP-450C
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Klipsch RP-4000F
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Klipsch RP-450C vs Klipsch RP-4000F Speaker Comparison

In this review, we will be comparing two different type of speakers by Klipsch. Klipsch Reference Premiere RP-450C is a Center Channel speaker whereas the RP-4000F is a Floor-standing speaker.

Let's have a brief look at the main features of Klipsch RP-450C and Klipsch RP-4000F first before getting into our more detailed comparison.

Klipsch RP-450C Key Specs

  • 2-way Design
  • 1" Tractrix horn Tweeter
  • 4 x 5.25" Cerametallic cone Woofer
  • 58-25k Hz Frequency Response
  • 97 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:up to 150watts
  • Weight:16.23kg
  • Dimensions (H x W x D): 174.0" x 31-1/8" x 14-9/16"( 174.0 x 791.0 x 370.0mm )

Klipsch RP-4000F Key Specs

  • 2-way Design
  • 1" Tractrix Horn Tweeter
  • 2 x 4" Cerametallic Woofer
  • 37-25k Hz Frequency Response
  • 95 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:up to 75watts
  • Weight:13.18kg
  • Dimensions (H x W x D): 870.0" x 7-3/8" x 11-3/8"( 870.0 x 188.0 x 289.0mm )

RP-450C and RP-4000F are members of Klipsch's Reference Premiere (RP) series of speakers. Below you can find the loudspeakers from this series.

Klipsch Reference Premiere (RP) Series History
Model Body Frequency SensitivityImpedance Woofer
Klipsch RP-500M
  
Bookshelf 48-25k Hz 93 dB8Ω 1 x 5.25"
Klipsch RP-400M
  
Bookshelf 52-25k Hz 93 dB8Ω 1 x 4"
Klipsch RP-600M
  
Bookshelf 45-25k Hz 96 dB8Ω 1 x 6.5"
Klipsch RP-6000F
  
Floor-standing 34-25k Hz 97 dB8Ω 2 x 6.5"
Klipsch RP-280F
  
Floor-standing 32-25k Hz 98 dB8Ω 2 x 8"
Klipsch RP-8000F
  
Floor-standing 32-25k Hz 98 dB8Ω 2 x 8"
Klipsch RP-160M
  
Bookshelf 45-25k Hz 95 dB8Ω 1 x 6.5"
Klipsch RP-5000F
  
Floor-standing 35-25k Hz 96 dB8Ω 2 x 5.25"
Klipsch RP-8060FA
  
Floor-standing 32-25k Hz 98 dB8Ω 2 x 8"
Klipsch RP-450C
Center Channel 58-25k Hz 97 dB8Ω 4 x 5.25"

What size room are the Klipsch RP-450C and Klipsch RP-4000F 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 RP-450C Klipsch RP-4000F
Near-field Poor Poor
Small Room Average Average
Mid-size Room Good Good
Large Room Average Average
Very Large Room Poor No way

(* 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 Klipsch RP-450C and Klipsch RP-4000F 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 RP-450C and RP-4000F are 2-way speakers.

Driver Klipsch RP-450C Klipsch RP-4000F
Driver Setup 2-way 2-way
Tweeter 1-inch 1-inch
Midrange - -
Woofer 4 x 5.25-inch 2 x 4-inch

RP-450C features a 1" titanium Tractrix horn Tweeter and 4 x 5.25" Cerametallic cone Woofer . On the other hand, the RP-4000F features a 1" Tractrix Horn Tweeter and 2 x 4" Cerametallic Woofer .

Frequency Response

RP-450C has a frequency range of 58-25k Hz whereas RP-4000F has a frequency range of 37-25k Hz. With a minimum frequency of 37Hz, the RP-4000F can go significantly deeper on the low side and provide stronger bass compared to the RP-450C's min frequency of 58Hz.

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

RP-450C
RP-4000F
Min
Average
Max
High Frequency

Center Channel Speakers

Klipsch RP-450C
Klipsch RP-4000F
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

RP-450C and RP-4000F have the same Impedance of 8 ohms but where they differ is the sensitivity levels. RP-450C sensitivity is rated at 97 dB and the RP-4000F's is at 95 dB. This 2 dB difference makes the Klipsch RP-450C a more sensitive speaker compared to Klipsch RP-4000F, hence will play louder with the same amount of watts.

Sensitivity

Center Channel Speakers

RP-450C
RP-4000F
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.

RP-450C can handle a max power of 150 watts RMS from the amp the whereas RP-4000F has a max power handling value of 75 watts RMS, 75 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

RP-4000F features Binding post posts which make bi-amping or bi-wiring possible. RP-450C has a Binding post which doesn't feature bi-amping/bi-wiring.

Klipsch RP-450C Terminals
Klipsch RP-450C's Binding post terminals

Cabinet Type and Port Position

Both RP-450C and RP-4000F 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 RP-450C's and Klipsch RP-4000F's external dimensions. 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) whereas Klipsch RP-4000F has external dimensions of 870.0 x 188.0 x 289.0mm ( 34-1/4 x 7-3/8 x 11-3/8inch) .

Klipsch RP-4000F is 603mm narrower and 81mm less deeper than Klipsch RP-450C but it is also 696mm 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 Klipsch RP-450C is approximately 2926.7cm2 / 453.6inch2 and base area of the Klipsch RP-4000F is approximately 543.3cm2 / 84.2inch2. The RP-450C requires 439% more surface area than the RP-4000F which gives it a small disadvantage on placement in tight spaces.

What's in the Box of Klipsch RP-450C?

Here are the items that are included inside the box of RP-450C:
  • Center-channel loudspeaker
  • Detachable magnetic grille
  • 4 Rubber feet
  • User Manual
  • Warranty Information
  • Important Safety Instructions
  • What's in the Box of Klipsch RP-4000F?

    Here are the items that come with the RP-4000F:
  • Floorstanding loudspeaker
  • Stabilizer feet (installed)
  • Grille (installed)
  • 2 Terminal jumpers (installed)
  • User Manual
  • Important Safety Instructions
  • Warranty Information

  • Reasons to choose Klipsch Reference Premiere RP-450C over Klipsch Reference Premiere RP-4000F
    Max Input Power 150 watts vs 75 watts Handle more power from your amplifier
    Sensitivity 97 dB vs 95 dB Play louder with same amount of amplification power
    Woofer Size 5.25 inches vs 4 inches Larger woofer
    Number of Woofers 4 vs 2 More woofers
    Height 174mm vs 870mm Easier to fit in smaller spaces
    Price per pair* 650USD vs 698USD costs less (*prices may change depending on the seller, location and time)

    Reasons to choose Klipsch Reference Premiere RP-4000F over Klipsch Reference Premiere RP-450C

    Low Frequency Response 37 Hz vs 58 Hz Generates deeper bass
    Base Surface Area 543cm2 vs 2926cm2 Takes less floor space
    Klipsch RP-450C vs Klipsch RP-4000F Specs Table
    Detailed comparison of specifications
    General Klipsch Reference Premiere RP-450C Klipsch Reference Premiere RP-4000F
    Brand Klipsch Klipsch
    Speaker Type Center channel speaker (Ebony) Floor-standing speaker
    Power Range up to 150 watts up to 75 watts
    Sensitivity 97 dB 95 dB
    Impedance 8 ohms 8 ohms
    Frequency Response 58-25k Hz 37-25k Hz
    Drivers
    Woofer Quantity 4 2
    Woofer Size 5.25" 4"
    Woofer Composition Cerametallic cone Cerametallic
    Woofer Surround Material Rubber Rubber
    Tweeter Size 1" 1"
    Tweeter Type Tractrix horn Tractrix Horn
    Aimable Tweeter No No
    Midrange Driver No No
    Firing Direction rear rear
    Physical Specs
    Height 174.0mm (6.9") 870.0mm (34.3")
    Width 791.0mm (31.1") 188.0mm (7.4")
    Depth 370.0mm (14.6") 289.0mm (11.4")
    Weight 16.23kg (35.7lbs) 13.18kg (29lbs)
    Enclosure Bass Reflex Bass Reflex
    Finish polymer veneer MDF/Wood-grain vinyl
    Available Colors Walnut, Black Walnut, Black
    Grille Yes Yes
    Moisture Resistancy No No
    Connections
    Biamp Inputs n/a Yes
    Other
    Parts Warranty 5 Years 5 Years
    Labor Warranty 5 Years 5 Years

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