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Klipsch Forte IV vs Klipsch La Scala AL6 Comparison

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Klipsch Forte IV

Passive Floor-standing | 38-20k Hz

Klipsch Heritage Forte IV
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Klipsch La Scala AL6

Passive Floor-standing | 40-19k Hz

Klipsch Heritage La Scala AL6
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Klipsch Forte IV Klipsch Forte IV
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Klipsch La Scala AL6 Klipsch La Scala AL6
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Klipsch Forte IV
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Klipsch La Scala AL6
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Klipsch Forte IV vs Klipsch La Scala AL6 Speaker Comparison

In this review, we will be comparing Forte IV and La Scala AL6, two Passive Floor-standing speakers by Klipsch

Let's have a brief look at the main features of Klipsch Forte IV and Klipsch La Scala AL6 first before getting into our more detailed comparison.

Klipsch Forte IV Key Specs

  • 3-way Design
  • 1" horn-loaded Tweeter
  • 1.75" Midrange
  • 12" Fibercomposite Woofer
  • 38-20k Hz Frequency Response
  • 99 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:up to 100watts
  • Weight:32.73kg
  • Dimensions (H x W x D): 909.0" x 16-5/8" x 13"( 909.0 x 423.0 x 331.0mm )

Klipsch La Scala AL6 Key Specs

  • 3-way Design
  • 1" horn-loaded Tweeter
  • 3" Midrange
  • 12" fiber-composite cone with folded horn Woofer
  • 3" Midrange
  • 40-19k Hz Frequency Response
  • 103 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:up to 100watts
  • Weight:93.00kg
  • Dimensions (H x W x D): 994.0" x 24.5" x 25.5"( 994 x 622 x 647mm )

Forte IV and La Scala AL6 are members of Klipsch's Heritage series of speakers. Below you can find the loudspeakers from this series.

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

In the following sections, we will get into more detail in order to better understand how the Klipsch Forte IV and Klipsch La Scala AL6 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 Forte IV and La Scala AL6 are 3-way speakers.

Driver Klipsch Forte IV Klipsch La Scala AL6
Driver Setup 3-way 3-way
Tweeter 1-inch 1-inch
Midrange 1 x 1.75-inch 1 x 3-inch
Woofer 1 x 12-inch 1 x 12-inch

Forte IV features a 1" titanium-diaphragm compression horn-loaded Tweeter , a 1.75" Midrange and 1 x 12" Fibercomposite Woofer . On the other hand, the La Scala AL6 features a 1" polyimide diaphragm compression horn-loaded Tweeter , a 3" Midrange and 1 x 12" fiber-composite cone with folded horn Woofer with a Crossover frequency at 425Hz - 2900Hz.

Frequency Response

Forte IV has a frequency range of 38-20k Hz whereas La Scala AL6 has a frequency range of 40-19k Hz. With a minimum frequency of 38Hz, the Forte IV can go slightly deeper then the La Scala AL6's min frequency of 40Hz.

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

Forte IV
La Scala AL6
Min
Average
Max
High Frequency

Floor-standing Speakers

Klipsch Forte IV
Klipsch La Scala AL6
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

Forte IV and La Scala AL6 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Forte IV sensitivity is rated at 99 dB and the La Scala AL6's is at 103 dB. This 4 dB difference makes the Klipsch La Scala AL6 a more sensitive speaker compared to Klipsch Forte IV, hence will play louder with the same amount of watts.

Sensitivity

Floor-standing Speakers

Forte IV
La Scala AL6
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.

Forte IV and La Scala AL6 has the same power range of up to 100 watts.

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

Both Forte IV and La Scala AL6 features dual binding post speaker terminals for bi-amping or bi-wiring.

Klipsch La Scala AL6Binding post Terminals
Klipsch La Scala AL6's Binding post terminals allows Bi-amping or bi-wiring

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 Forte IV's and Klipsch La Scala AL6's external dimensions. Klipsch Forte IV has external dimensions of 909.0 x 423.0 x 331.0mm ( 35-3/4 x 16-5/8 x 13inch) whereas Klipsch La Scala AL6 has external dimensions of 994 x 622 x 647mm ( 39/1 x 24.5 x 25.5inch) .

Klipsch La Scala AL6 is clearly the larger of the two speakers. Its body is 199mm wider, 85mm taller and 316mm deeper than Klipsch Forte IV.

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 Forte IV is approximately 1400.1cm2 / 217.0inch2 and base area of the Klipsch La Scala AL6 is approximately 3960.9cm2 / 613.9inch2. The Forte IV requires 65% less surface area than the La Scala AL6 which gives it a small advantage 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 Forte IV weighs 32.73kg / 72lbs and the Klipsch La Scala AL6 weighs 93.00kg / 204.6lbs. This makes the La Scala AL6 184% heavier than the Forte IV.

Here is a comparison of how Forte IV and La Scala AL6's weights compare with the average, max and min weights in Passive Floor-standing class.

Weight
All Floor-standing Speakers
Klipsch Forte IV
Klipsch La Scala AL6
Min
Average
Max

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
  • What's in the Box of Klipsch La Scala AL6?

    Here are the items that come with the La Scala AL6:
  • 2 Loudspeaker cabinets
  • 2 Subwoofer cabinets
  • 2 Grilles
  • 4 Jumper-straps (pre-installed)
  • Owners Manual
  • Congratulations letter
  • Klipsch brochure

  • Reasons to choose Klipsch Heritage Forte IV over Klipsch Heritage La Scala AL6
    Low Frequency Response 38 Hz vs 40 Hz Generates deeper bass
    High Frequency Response 20k Hz vs 19k Hz Generates higher frequency
    Passive Radiator rear-firing 15-inch vs None Increases the bass performance
    Height 909mm vs 994mm Easier to fit in smaller spaces
    Base Surface Area 1400cm2 vs 3960cm2 Takes less floor space
    Price per pair* 4998USD vs 14998USD costs less (*prices may change depending on the seller, location and time)

    Reasons to choose Klipsch Heritage La Scala AL6 over Klipsch Heritage Forte IV

    Sensitivity 103 dB vs 99 dB Play louder with same amount of amplification power
    Klipsch Forte IV vs Klipsch La Scala AL6 Specs Table
    Detailed comparison of specifications
    General Klipsch Heritage Forte IV Klipsch Heritage La Scala AL6
    Brand Klipsch Klipsch
    Speaker Type Floor-standing speaker Floor-standing speaker
    Power Range up to 100 watts up to 100 watts
    Sensitivity 99 dB 103 dB
    Impedance 8 ohms 8 ohms
    Impedance n/a 3.2 ohms
    Frequency Response 38-20k Hz 40-19k Hz
    Drivers
    Woofer Quantity 1 1
    Woofer Size 12" 12"
    Woofer Composition Fibercomposite fiber-composite cone with folded horn
    Woofer Surround Material Rubber Rubber
    Tweeter Size 1" 1"
    Tweeter Type horn-loaded horn-loaded
    Aimable Tweeter No No
    Midrange Driver 1.75" 3"
    Crossover Frequency n/a 425Hz - 2900Hz
    Firing Direction rear n/a
    Physical Specs
    Height 909.0mm (35.8") 994.0mm (39.1")
    Width 423.0mm (16.7") 622.0mm (24.5")
    Depth 331.0mm (13") 647.0mm (25.5")
    Weight 32.73kg (72lbs) 93.00kg (204.6lbs)
    Enclosure Passive Radiator Bass Reflex
    Finish MDF/Wood veneer MDF/Woof veneer
    Available Colors Black American Auburn, Black Ash, American Walnut
    Grille Yes Yes
    Moisture Resistancy No No
    Connections
    Biamp Inputs Yes Yes
    Other
    Parts Warranty 10 Years 10 Years
    Labor Warranty 10 Years 10 Years

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