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Klipsch Heresy III vs Klipsch R-625FA Comparison

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Klipsch Heresy III

Passive Floor-standing | 58-20k Hz

Klipsch Capitol Heresy III
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Klipsch R-625FA

Passive Floor-standing | 38-21k Hz

Klipsch Reference R-625FA
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Klipsch Heresy III Klipsch Heresy III
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Klipsch R-625FA Klipsch R-625FA
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Klipsch Heresy III
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Klipsch R-625FA
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Klipsch Heresy III vs Klipsch R-625FA Speaker Comparison

In this review, we will be comparing Heresy III and R-625FA, two Passive Floor-standing speakers by Klipsch

Let's have a brief look at the main features of Klipsch Heresy III and Klipsch R-625FA first before getting into our more detailed comparison.

Klipsch Heresy III Key Specs

  • 3-way Design
  • 1" Tractrix horn Tweeter
  • 1.75" Midrange
  • 12" Fiber-composite Woofer
  • 58-20k Hz Frequency Response
  • 99 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:100watts
  • Weight:20.00kg
  • Dimensions (H x W x D): 607.0" x 15-1/2" x 13-7/16"( 607.0 x 394.0 x 342.0mm )

Klipsch R-625FA Key Specs

  • 2-way Design
  • 1" Tweeter
  • 2 x 6.5" Copper-spun IMG Woofer
  • 38-21k Hz Frequency Response
  • 96 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:up to 100watts
  • Weight:22.20kg
  • Dimensions (H x W x D): 1021.0" x 9-3/8" x 16-3/4"( 1021.0 x 239.0 x 426.0mm )

In the following sections, we will get into more detail in order to better understand how the Klipsch Heresy III and Klipsch R-625FA 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

One of the fundamental differences between these two speakers is that Heresy III is a 3-way design whereas the R-625FA is a 2-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 Klipsch Heresy III Klipsch R-625FA
Driver Setup 3-way 2-way
Tweeter 1-inch 1-inch
Midrange 1 x 1.75-inch -
Woofer 1 x 12-inch 2 x 6.5-inch

Heresy III features a 1" titanium-diaphragm compression Tractrix horn Tweeter , a 1.75" Midrange and 1 x 12" Fiber-composite Woofer . On the other hand, the R-625FA features a 1" Tweeter and 2 x 6.5" Copper-spun IMG Woofer with a Crossover frequency at 2000Hz.

Frequency Response

Heresy III has a frequency range of 58-20k Hz whereas R-625FA has a frequency range of 38-21k Hz. With a minimum frequency of 38Hz, the R-625FA can go significantly deeper on the low side and provide stronger bass compared to the Heresy III'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 Floor-standing class in our database.

Low Frequency

Floor-standing Speakers

Heresy III
R-625FA
Min
Average
Max
High Frequency

Floor-standing Speakers

Klipsch Heresy III
Klipsch R-625FA
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

Heresy III and R-625FA have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Heresy III sensitivity is rated at 99 dB and the R-625FA's is at 96 dB. This 3 dB difference makes the Klipsch Heresy III a more sensitive speaker compared to Klipsch R-625FA, hence will play louder with the same amount of watts.

Sensitivity

Floor-standing Speakers

Heresy III
R-625FA
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.

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

Heresy III features 5-way post posts which make bi-amping or bi-wiring possible. R-625FA has a Post which doesn't feature bi-amping/bi-wiring.

Klipsch R-625FA Terminals
Klipsch R-625FA's 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 Klipsch Heresy III's and Klipsch R-625FA's external dimensions. Klipsch Heresy III has external dimensions of 607.0 x 394.0 x 342.0mm ( 23-7/8 x 15-1/2 x 13-7/16inch) whereas Klipsch R-625FA has external dimensions of 1021.0 x 239.0 x 426.0mm ( 40-3/16 x 9-3/8 x 16-3/4inch) .

Klipsch Heresy III is 414mm shorter and 84mm less deeper than Klipsch R-625FA but it is also 155mm wider.

Below you can see the front view size comparison of Klipsch Heresy III and Klipsch R-625FA in scale.

Klipsch Heresy III vs Klipsch R-625FA Size Comparison - Front View
Comparison image of Klipsch Heresy III and Klipsch R-625FA 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 Heresy III is approximately 1347.5cm2 / 208.9inch2 and base area of the Klipsch R-625FA is approximately 1018.1cm2 / 157.8inch2. The Heresy III requires 32% more surface area than the R-625FA 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 Klipsch Heresy III weighs 20.00kg / 44lbs and the Klipsch R-625FA weighs 22.20kg / 48.8lbs. This makes the R-625FA 11% heavier than the Heresy III.

Here is a comparison of how Heresy III and R-625FA's weights compare with the average, max and min weights in Passive Floor-standing class.

Weight
All Floor-standing Speakers
Klipsch Heresy III
Klipsch R-625FA
Min
Average
Max

What's in the Box of Klipsch Heresy III?

Here are the items that are included inside the box of Heresy III:
  • Floor-standing loudspeaker
  • Detachable grille (installed)
  • Base riser (installed)
  • 4 Self-adhesive rubber feet
  • Owners Manual
  • Congratulations letter
  • Klipsch brochure
  • What's in the Box of Klipsch R-625FA?

    Here are the items that come with the R-625FA:
  • Floorstanding loudspeaker
  • 2 Grilles (installed)
  • 2 Feet
  • 4 Screws
  • Quick Setup Guide
  • Important Safety Instructions
  • Warranty Information
  • Loudspeaker Feet note

  • Reasons to choose Klipsch Capitol Heresy III over Klipsch Reference R-625FA
    Driver Setup 3-way vs 2-way Have a dedicated mid-range driver
    Sensitivity 99 dB vs 96 dB Play louder with same amount of amplification power
    Woofer Size 12 inches vs 6.5 inches Larger woofer
    Bi-Amping and Bi-Wiring Yes vs No Allows bi-amping and bi-wiring connections
    Height 607mm vs 1021mm Easier to fit in smaller spaces

    Reasons to choose Klipsch Reference R-625FA over Klipsch Capitol Heresy III

    Number of Woofers 2 vs 1 More woofers
    Low Frequency Response 38 Hz vs 58 Hz Generates deeper bass
    High Frequency Response 21k Hz vs 20k Hz Generates higher frequency
    Dolby Atmos Drivers Built-in 1 x 5.25 vs No Dolby Atmos Compatibility
    Base Surface Area 1018cm2 vs 1347cm2 Takes less floor space
    Price per pair* 1658USD vs 2346USD costs less (*prices may change depending on the seller, location and time)
    Klipsch Heresy III vs Klipsch R-625FA Specs Table
    Detailed comparison of specifications
    General Klipsch Capitol Heresy III Klipsch Reference R-625FA
    Brand Klipsch Klipsch
    Speaker Type Floor-standing speaker Floor-standing speaker
    Power Range 100 watts up to 100 watts
    Sensitivity 99 dB 96 dB
    Impedance 8 ohms 8 ohms
    Frequency Response 58-20k Hz 38-21k Hz
    Drivers
    Woofer Quantity 1 2
    Woofer Size 12" 6.5"
    Woofer Composition Fiber-composite Copper-spun IMG
    Woofer Surround Material Treated cloth Rubber
    Tweeter Size 1" 1"
    Tweeter Type Tractrix horn n/a
    Aimable Tweeter No No
    Midrange Driver 1.75" No
    Crossover Frequency n/a 2000Hz
    Firing Direction n/a rear
    Physical Specs
    Height 607.0mm (23.9") 1021.0mm (40.2")
    Width 394.0mm (15.5") 239.0mm (9.4")
    Depth 342.0mm (13.5") 426.0mm (16.8")
    Weight 20.00kg (44lbs) 22.20kg (48.8lbs)
    Enclosure Acoustic Suspension Bass Reflex
    Finish MDF/Wood veneer MDF/Wood-grain vinyl
    Available Colors Blonde Cherry Black
    Grille Yes Yes
    Moisture Resistancy No No
    Connections
    Biamp Inputs Yes No
    Other
    Parts Warranty 5 Years 5 Years
    Labor Warranty 5 Years 5 Years

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