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Klipsch Heritage Forte IV Review

Main Features

  • 1" horn-loaded Tweeter
  • 1.75" polyimide diaphragm compression horn-loaded Midrange
  • 12" Fibercomposite Woofer
  • Rear-firing 15-inch Passive Radiators
  • 38-20k Hz Frequency Response
  • 99 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:up to 100watts
  • Dimensions (H x W x D): 35-3/4" x 16-5/8" x 13"
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Klipsch Forte IV Review

Forte IV is a 3-way Passive Passive Radiator Floor-standing speaker by Klipsch. It features a 1" horn-loaded Tweeter, 1 x 1.75" Midrange and 1 x 12" Fibercomposite Woofer. Forte IV also employs rear-firing 15-inch passive radiators. The speaker has a frequency range of 38-20k Hz and a sensitivity of 99 dB. Klipsch Forte IV has an MSRP of 4998$ per pair but can often be found around 3998$ per pair.

Forte IV 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
38-20k Hz 99 dB8Ω 1 x 12"
Klipsch Heresy IV
Compare
48-20k Hz 99 dB8Ω 1 x 12"
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 Cornwall IV
Compare
34-20k Hz 102 dB8Ω 1 x 15"
Klipsch Heresy III
Compare
58-20k Hz 99 dB8Ω 1 x 12"


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Frequency Response

Klipsch Forte IV has a Frequency response range of 38-20k Hz at ±3dB and Power Range of up to 100 watts. At a minimum frequency of 38 Hz, Forte IV will provide a deep bass that will probably satisfy majority of listeners, especially for music. Movie lovers and music listeners who likes to experience a full range response will still benefit from use of a subwooofer though. Here we have a comparison of how Forte IV'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 Forte IV
Min
Average
Max
High Frequency
Floor-standing Speakers
Klipsch Forte IV
Min
Average
Max

Among the speakers in our database with a max MSRP price of 5000$ (Pair), these are the 5 Passive Floor-standing speakers that have the deeper bass levels than the Klipsch Forte IV's 38Hz:

  • Definitive BP-9080X with Low Frequency of 16 Hz (Compare w/ Forte IV)
  • GoldenEar Triton Two+ with Low Frequency of 16 Hz (Compare w/ Forte IV)
  • Definitive BP-9060 with Low Frequency of 18 Hz (Compare w/ Forte IV)
  • GoldenEar Triton Three+ with Low Frequency of 21 Hz (Compare w/ Forte IV)
  • Definitive BP-9040 with Low Frequency of 22 Hz (Compare w/ Forte IV)


Impedance and Sensitivity

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

Sensitivity
Floor-standing Speakers
Klipsch Forte IV
Min
Average
Max

Is the Klipsch Heritage Forte IV an easy to drive speaker?

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

99dB of Klipsch Heritage Forte IV is considered a high sensitivity compared to average stereo speaker which makes Forte IV an easy to drive from Sensitivity perspective.

Input Type

Forte IV has Post type connectors and lets bi-amping/bi-wiring. Bi-wiring can provide improvements in the overall transparency of your loudspeakers by running separate speaker wires to the low & high frequency drivers from a single amplifier. Bi-amping allows the use of separate amplifiers for the high & low frequency drivers of your loudspeaker which may result in greater dynamic range & lower distortion.

Klipsch Forte IV Speaker Size: Weight and Dimensions

Klipsch Forte IV has external dimensions of (Height x Width x Depth) 35-3/4 x 16-5/8 x 13inch (909.0 x 423.0 x 331.0mm ).

Cabinet type and Materials

Klipsch Forte IV has a Passive Radiator type cabinet and MDF/Wood veneer finish.

Speaker Feet

Klipsch Forte IV comes with 8 Self-adhesive rubber feet which you can use to secure your loudspeaker on the surface that you are putting on.

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.

Port Position

Klipsch Forte IV is a rear-firing port speaker so you have to make sure you leave enough space between the back of the speaker and wall or bookshelf so that it has room to breathe.

Available colors

Klipsch Forte IV is available in Black.

Grille

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

What's in the Box of Klipsch Forte IV?

Here are the items that are included inside the box of Forte IV:
  • 2 Floorstanding loudspeakers
  • 2 Grilles
  • 8 Self-adhesive rubber feet
  • Owners Manual
  • Congratulations letter
  • Klipsch brochure
  • Warranty

    10 Years of parts warranty and 10 Years of labor warranty is generally provided by the manufacturer.


    Klipsch Heritage Forte IV Alternatives in Passive Floor-standing Speakers
    Model Type Sensitivity Impedance Frequency
    Triangle Borea BR07
    Compare
    3-way 91 dB 8 ohms 44 - 22k Hz
    Klipsch R-625FA
    Compare
    2-way 96 dB 8 ohms 38-21k Hz
    Klipsch R-620F
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    2-way 96 dB 8 ohms 38-21k Hz
    Polk S60
    Compare
    2-way 90 dB 8 ohms 26-40k Hz
    Wharfedale EVO4.4
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    3-way 89 dB 8 ohms 44-22k Hz
    Klipsch R-820F
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    2-way 97 dB 8 ohms 35-21k Hz
    Polk RTi A5
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    2-way 90 dB 8 ohms 40-26k Hz
    Klipsch R-610F
    Compare
    2-way 94 dB 8 ohms 45-21k Hz
    Klipsch RP-6000F
    Compare
    2-way 97 dB 8 ohms 34-25k Hz
    Polk S50
    Compare
    2-way 89 dB 8 ohms 33-40k Hz
    B&W 603
    Compare
    3-way 88.5 dB 8 ohms 48-28k Hz
    Polk S55
    Compare
    2-way 90 dB 8 ohms 32-40k Hz
    Polk R700
    Compare
    3-way 88 dB 8 ohms 38-38k Hz
    Jamo S 809
    Compare
    2-way 90 dB 8 ohms 37-26k Hz
    Jamo C 97 II
    Compare
    3-way 89 dB 6 ohms 32-24k Hz
    Triangle Borea BR09
    Compare
    3-way 92.5 dB 8 ohms 35 - 22k Hz
    Frequently Asked Questions about Klipsch Heritage Forte IV
    What is the External Dimensions of Klipsch Heritage Forte IV
    What is the Speaker Sensitivity of Klipsch Heritage Forte IV
    is the Klipsch Heritage Forte IV an easy to drive speaker?


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