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Klipsch Heresy III Review
Klipsch Capitol Heresy III

Main Features

  • 1" Tractrix horn Tweeter
  • 1.75" titanium-diaphragm compression Tractrix horn Midrange
  • 12" Fiber-composite Woofer
  • 58-20k Hz Frequency Response
  • 99 dB Sensitivity
  • Impedance: 8ohms
  • Power Range: 100watts
  • Weight:44.00 lbs / 20.00 kg
  • Dimensions(HxWxD): 23-7/8"x15-1/2"x13-7/16" / 607.0 x 394.0 x 342.0mm
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Klipsch Heresy III Review
Klipsch Heresy III Klipsch Heresy III
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Klipsch Capitol Heresy III is a 3-way Passive Acoustic Suspension Floor-standing speaker by Klipsch. It features a 1" Tractrix horn Tweeter, 1 x 1.75" Midrange and 1 x 12" Fiber-composite Woofer. The speaker has a frequency range of 58-20k Hz and a sensitivity of 99 dB. Klipsch Heresy III has an MSRP of 2346$ per pair.

Klipsch's Heritage Series of Loudspeakers

Heresy III is a member of Klipsch's Heritage series of Passive speakers. Below you can see the main specs of these speakers.

Klipsch Heritage Series Speakers
Model Frequency SensitivityImpedance Woofer
Klipsch Forte IV
Compare
38-20k Hz 99 dB8Ω 1 x 12"
Klipsch Cornwall IV
Compare
34-20k Hz 102 dB8Ω 1 x 15"
Klipsch La Scala AL6
Compare
40-19k Hz 103 dB8Ω 1 x 12"
Klipsch Heresy IV
Compare
48-20k Hz 99 dB8Ω 1 x 12"
Klipsch Klipschorn AK7
Compare
34-19k Hz 103 dB8Ω 1 x 15"
Klipsch La Scala AL5
Compare
51-20k Hz 105 dB8Ω 1 x 15"
Klipsch Klipschorn AK6
Compare
33-20k Hz 105 dB8Ω 1 x 15"
Klipsch Heresy III
58-20k Hz 99 dB8Ω 1 x 12"
Klipsch Heritage Series Speakers
Klipsch Heritage Series Speakers


**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.

Frequency Response of the Klipsch Heresy III Speaker

Klipsch Heresy III has a Frequency response range of 58-20k Hz at ±3dB and Power Range of 100 watts. With a minimum frequency of 58 Hz, Heresy III delivers moderate bass depth so depending on your use case, you might want to consider adding a subwoofer to your system.

To focus on the subwoofers that are in a similar price range with Klipsch Heresy III, check out the Powered Subwoofers under $3000. Alternatively, find the Full list of Powered Subwoofers regardless of the price.
Here we have a comparison of how Heresy III's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
Low Frequency
Floor-standing Speakers
Klipsch Heresy III
Min
Average
Max
High Frequency
Floor-standing Speakers
Klipsch Heresy III
Min
Average
Max

Among the speakers in our database with a max MSRP price of 3000$ (Pair), these are the 5 Passive Floor-standing speakers that have the deeper bass levels than the Klipsch Heresy III's 58Hz:

  • KLH Kendall with Low Frequency of 25 Hz (Compare w/ Heresy III)
  • GoldenEar Triton Five with Low Frequency of 26 Hz (Compare w/ Heresy III)
  • KLH Concord with Low Frequency of 28 Hz (Compare w/ Heresy III)
  • SVS Ultra Tower with Low Frequency of 28 Hz (Compare w/ Heresy III)
  • GoldenEar Triton Seven with Low Frequency of 29 Hz (Compare w/ Heresy III)

Impedance and Sensitivity

Klipsch Heresy III's nominal impedance level is 8 ohms and has a sensitivity of 99 dB.

Sensitivity
Floor-standing Speakers
Klipsch Heresy III
Min
Average
Max

8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Klipsch Capitol Heresy III is not considered a difficult to drive speaker from nominal Impedance perspective.

Sensitivity

99dB of the Klipsch Capitol Heresy III is considered a high sensitivity compared to average stereo speaker which makes Heresy III an easy to drive from Sensitivity perspective. If you are planning to power your speaker with a Tube amp which are generally very low power, the Klipsch Heresy III will be a good choice.

Check the amplifiers that are in a similar price range to the Klipsch Heresy III:

  • Integrated Amps under 2000 USD
  • Integrated Amps under 3000 USD
  • Integrated Amps under 5000 USD
  • All Integrated Amplifiers

Input Type

Heresy III has 5-way post type connectors and lets bi-amping/bi-wiring. Bi-wiring can enhance the overall transparency of your loudspeakers by using separate speaker wires for the low and high-frequency drivers from a single amplifier. Bi-amping, on the other hand, involves using separate amplifiers for the high and low-frequency drivers, potentially resulting in a greater dynamic range and reduced distortion.

Klipsch Heresy III External Dimensions and Weight

Klipsch Heresy III has external dimensions of (Height x Width x Depth) 23-7/8 x 15-1/2 x 13-7/16inch (607.0 x 394.0 x 342.0mm ).

Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited. The base area of Klipsch Heresy III is approximately 1347.5cm2 / 208.9inch2.

To get a better perspective on the real life size of Klipsch Heresy III, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm).

Klipsch Heresy III Real Life Body Size Comparison
Klipsch Heresy III Speaker Size Compared to a Compact Disc

Here we place the Klipsch Heresy III virtually next to a standard width amplifier and turntable on a media center to get a better idea about the size.

Klipsch Heresy III placed next to a Media Stand
Klipsch Heresy III Floor-standing Speaker next to a Media Stand

Weight

The Klipsch Heresy III weighs 20.00kg / 44lbs per piece. Here is a comparison of how Heresy III's weight compares with the average, max and min weights in its class.

Weight
All Floor-standing Speakers
Klipsch Heresy III
Min
Average
Max
Weight
Floor-standing Speakers under $3000
Klipsch Heresy III
Min
Average
Max

How does the Klipsch Heresy III compare to the Klipsch Heritage Heresy IV?

One of the natural alternative to the Klipsch Heresy III is the Heresy IV which is located one step higher in Klipsch's Passive Floor-standing selection.

Here is a scaled size comparison of these two speakers to give you an idea how their external dimensions compare:

Klipsch Heresy III vs Klipsch Heresy IV Size Comparison - Front View
Comparison image of Klipsch Heresy III and Klipsch Heresy IV Size and External Dimensions

Check the Detailed Comparison of Klipsch Heresy III vs Heresy IV for more details.

Cabinet type and Materials

Klipsch Heresy III has a Acoustic Suspension type cabinet and a MDF/Wood veneer finish. Acoustic Suspension loudspeakers aka Sealed speakers have no openings such as ports or slots.. They can be designed smaller, the bass is more accurate and tighter compared to ported designs but doesn't go as low on the lower end in general.

Speaker Feet

Klipsch Heresy III comes with the parts below which you can use to secure your loudspeaker on the surface that you are putting on:
  • Base riser (installed)
  • 4 Self-adhesive rubber feet
  • It is always recommended to use some kind of feet under all types of speakers. Besides limiting the movement of the speakers, it also compensates for non-flat surfaces and limits the contact surface area of the speaker. Rubber based feet also help isolating the vibrations within certain frequency ranges.

    Available colors

    Klipsch Heresy III is available in Blonde Cherry.

    Does the Klipsch Heresy III come with a Grille?

    Heresy III comes with grilles. The purpose of the grille is to protect the delicate driver elements from external impacts while still allowing the sound to pass as clearly as possible.

    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
  • Recommended Accessories

    Here is a list of accessories that we think you may need for the Klipsch Capitol Heresy III.

    • Speaker Cable and Connectors
      • Speaker Cables with Banana Plugs: If you know the lenght of the cable you need, this is the easier option to connect your speakers with your amp.
      • Speaker Cables without Connectors: If you are not sure about the lenght or need longer than standard cables with plugs, choose this option.
      • Banana Connectors and Plugs: If you chose the cables without connectors option or already have some cable around, pick the banana plugs separately.
    • Vibration Isolators: IsoAcoustics isolators more affordable options too.
    • Acoustic Panels and Treatments: Your room is as important as your stereo equipment so acoustic treatments goes a long way in improving the overall performance.

    Warranty

    5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.

    Klipsch Capitol Heresy III Alternatives in Passive Floor-standing Speakers
    Model Type Sensitivity Impedance Frequency
    Klipsch Heresy IV
    Compare
    3-way 99 dB 8 ohms 48-20k Hz
    Klipsch Cornwall IV
    Compare
    3-way 102 dB 8 ohms 34-20k Hz
    Klipsch Forte IV
    Compare
    3-way 99 dB 8 ohms 38-20k Hz
    Klipsch La Scala AL5
    Compare
    3-way 105 dB 8 ohms 51-20k Hz
    Klipsch Klipschorn AK6
    Compare
    3-way 105 dB 8 ohms 33-20k Hz
    Klipsch RP-8000F II
    Compare
    2-way 98 dB 8 ohms 32-25k Hz
    Klipsch RP-8000F
    Compare
    2-way 98 dB 8 ohms 32-25k Hz
    Klipsch R-625FA
    Compare
    2-way 96 dB 8 ohms 38-21k Hz
    Frequently Asked Questions about Klipsch Capitol Heresy III
    What is the External Dimensions of Klipsch Capitol Heresy III
    What is the Speaker Sensitivity of Klipsch Capitol Heresy III
    is the Klipsch Capitol Heresy III an easy to drive speaker?

    Klipsch Heresy III Detailed Specifications

    General
    BrandKlipsch
    Full Model NameKlipsch Capitol Heresy III
    Speaker Type3-way Floor-standing
    Power Range100 watts
    Sensitivity99 dB
    Impedance8 ohms
    Frequency Response58-20k Hz
    DRIVERS
    Woofer Size12-inch
    Woofer CompositionFiber-composite
    Woofer SurroundTreated cloth
    Tweeter Size1-inch
    Tweeter TypeTractrix horn
    Midrange Size1.75-inch

    CONNECTIONS
    Connector Type5-way post
    Biamp InputsYes
    PHYSICAL SPECS
    Height607.0mm ( 23-7/8-inch)
    Width394.0mm ( 15-1/2-inch)
    Depth342.0mm ( 13-7/16-inch)
    Height607.0mm ( 23-7/8-inch)
    Weight20.00kg ( 44.00 lbs)
    EnclosureAcoustic Suspension
    FinishMDF/Wood veneer
    Available ColorsBlonde Cherry
    Mounting BracketNo
    GrilleYes
    Moisture ResistanceNo
    OTHER
    Handheld RemoteNo
    Parts Warranty5 Years
    Labor Warranty5 Years
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