Klipsch Heritage Heresy IV is a 3-way Passive Bass Reflex Floor-standing speaker by Klipsch. It was released in 2019. It features a 1" horn-loaded Tweeter, 1 x 1.75" Midrange and 1 x 12" Fiber-composite Woofer. The speaker has a frequency range of 48-20k Hz and a sensitivity of 99 dB. Klipsch Heresy IV has an MSRP of 3198$ per pair.
Klipsch's Heritage Series of Loudspeakers
Heresy IV is a member of Klipsch's Heritage series of Passive speakers. The Heritage range are Klipsch's iconic hand-built American speakers, including the Cornwall, Heresy and horn-loaded La Scala, some in production for decades. Below you can see the main specs of these speakers.
See all 10 Klipsch Heritage models compared »
Klipsch Heritage Series Speakers
Klipsch Heritage Series Speakers
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Frequency Response of the Klipsch Heresy IV Speaker
Klipsch Heresy IV has a Frequency response range of 48-20k Hz and Power Range of up to 100 watts. With a minimum frequency of 48 Hz, Heresy IV delivers moderate bass depth so depending on your use case, you might want to consider adding a subwoofer to your system.
Here we have a comparison of how Heresy IV's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Floor-standing Speakers
Thinking about a subwoofer for the Klipsch Heresy IV?
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 Heresy IV's 48Hz:
Impedance and Sensitivity
Klipsch Heresy IV's nominal impedance level is
8 ohms and has a sensitivity of
99 dB.
Sensitivity
Floor-standing Speakers
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Klipsch Heritage Heresy IV is not considered a difficult to drive speaker from nominal Impedance perspective.
Sensitivity
99dB of the Klipsch Heritage Heresy IV is considered a high sensitivity compared to average stereo speaker which makes Heresy IV 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 IV will be a good choice. Work out how loud the Klipsch Heresy IV plays in your room →
What amplifier does the Klipsch Heresy IV need?
At normal listening levels in a medium room, about
0.9–60 W
per channel into 8 ohms.
Set your own conditions and we will rank every amplifier we cover.
Prefer to browse? Integrated amplifiers under $5,000, or every amplifier we cover.
Input Type
Heresy IV 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.
Work out what gauge speaker cable this run needs →
Klipsch Heresy IV External Dimensions and Weight
Klipsch Heresy IV has external dimensions of (Height x Width x Depth) 24-13/16 x 15-1/2 x 13-1/4inch (631.0 x 394.0 x 337.0mm ).
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 IV is approximately 1327.8cm2 / 205.8inch2.
To get a better perspective on the real life size of Klipsch Heresy IV, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm).
Klipsch Heresy IV Speaker Size Compared to a Compact Disc
Here we place the Klipsch Heresy IV virtually next to a standard width amplifier and turntable on a media center to get a better idea about the size.
Klipsch Heresy IV Floor-standing Speaker next to a Media Stand
Find speakers that fit your shelf or alcove → · Work out where they should sit in the room →
WeightThe Klipsch Heresy IV weighs 20.45kg / 45lbs per piece. Here is a comparison of how Heresy IV's weight compares with the average, max and min weights in its class.
Weight
All Floor-standing Speakers
Weight
Floor-standing Speakers under $5000
How does the Klipsch Heresy IV compare to the Klipsch Heritage Forte IV?
One of the natural alternative to the Klipsch Heresy IV is the Forte 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:
Comparison image of Klipsch Heresy IV and Klipsch Forte IV Size and External Dimensions
Check the Detailed Comparison of Klipsch Heresy IV vs Forte IV for more details.
Cabinet type and Materials
Klipsch Heresy IV has a
Bass Reflex type cabinet and a MDF/Wood veneer finish. Bass Reflex type loudspeakers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs.
Available colors
Klipsch Heresy IV is available in Black.
Does the Klipsch Heresy IV come with a Grille?
Heresy IV 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 IV?
Here are the items that are included inside the box of Heresy IV:
- 2 Floor-standing loudspeakers
- 2 Detachable grilles (installed)
- 2 Base risers (installed)
- 8 Self-adhesive rubber feet
- 4 Jumper-straps (installed)
- Owners Manual
- Congratulations letter
- Klipsch brochure
Recommended Accessories
Here is a list of accessories that we think you may need for the Klipsch Heritage Heresy IV.
Warranty
10 Years of parts warranty and 10 Years of labor warranty is generally provided by the manufacturer.