In this review, we will be comparing Forte IV and HDI-3600, two Passive Floor-standing speakers from Klipsch and JBL.
Let's have a brief look at the main features
of Klipsch Forte IV and JBL HDI-3600 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 )
JBL HDI-3600 Key Specs
- 2-way Design
- 1" Tweeter
- 3 x 6.5" Aluminum Woofer
- 38-30k Hz Frequency Response
- 90 dB Sensitivity
- Impedance: 4ohms
- Power Range:20-250watts
- Weight:28.09kg
- Dimensions (H x W x D): 1028.0" x 10-3/16" x 13-9/16"( 1028.0 x 259.0 x 345.0mm )
In the following sections, we will get into more detail in order to better understand how the Klipsch Forte IV and JBL HDI-3600 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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Drivers
One of the fundamental differences between these two speakers is that Forte IV is a 3-way design whereas the HDI-3600 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 Forte IV |
JBL HDI-3600 |
|
Driver Setup
|
3-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
1 x 1.75-inch |
- |
|
Woofer
|
1 x 12-inch
|
3 x 6.5-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 HDI-3600 features a 1" Tweeter and 3 x 6.5" Aluminum Woofer .
Frequency Response
Forte IV has a frequency range of 38-20k Hz whereas HDI-3600 has a frequency range of 38-30k Hz.
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
High Frequency
Floor-standing Speakers
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 is a 8 ohms speaker compared to the HDI-3600 which has a nominal impedance of 4 ohms. Lower impedance speakers, especially the ones that are rated at 4 ohms may put more pressure on the amplifier unit especially when played at high volume levels, so make sure the amp you pair with the HDI-3600 can provide this impedance level.
These two speakers also have different sensitivity levels. Forte IV sensitivity is rated at 99 dB and the HDI-3600's is rated at 90 dB. This 9 dB difference makes the Klipsch Forte IV a more sensitive speaker compared to JBL HDI-3600, hence will play louder with the same amount of watts.
Sensitivity
Floor-standing Speakers
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 can handle a max power of 250 watts RMS from the amp the whereas Forte IV has a max power handling value of 100 watts RMS , 150 watts less than the HDI-3600.
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 HDI-3600 features dual binding post speaker terminals for bi-amping or bi-wiring.
Cabinet Type and Port Position
Both Forte IV and HDI-3600 have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.
If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.
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 JBL HDI-3600'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 JBL HDI-3600 has external dimensions of 1028.0 x 259.0 x 345.0mm ( 40-7/16 x 10-3/16 x 13-9/16inch) .
Klipsch Forte IV is 119mm shorter and 14mm less deeper than JBL HDI-3600 but it is also 164mm wider.
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 JBL HDI-3600 is approximately 893.6cm2 / 138.5inch2. The Forte IV requires 57% more surface area than the HDI-3600 which gives it a small disadvantage on placement in tight spaces.