In this review, we will be comparing Forte IV and R-620F, two Passive Floor-standing speakers by Klipsch Let's have a brief look at the main features
of Klipsch Forte IV and Klipsch R-620F first before getting into our more
detailed comparison.
In the following sections, we will get into more detail in order to better understand how the Klipsch Forte IV and Klipsch R-620F 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 R-620F 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 |
Klipsch R-620F |
Driver Setup
|
3-way
|
2-way
|
Tweeter
|
1-inch
|
1.0-inch
|
Midrange
|
1 x 1.75-inch |
- |
Woofer
|
1 x 12-inch
|
2 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 R-620F features a 1.0" Tweeter and 2 x 6.5" Copper-spun IMG Woofer with a Crossover frequency at 2000Hz.
Frequency Response
Forte IV has a frequency range of 38-20k Hz whereas R-620F has a frequency range of 38-21k 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 and R-620F 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 R-620F's is at 96 dB. This 3 dB difference makes the Klipsch Forte IV a more sensitive speaker compared to Klipsch R-620F, 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 and R-620F 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
Forte IV features Post posts which make bi-amping or bi-wiring possible. R-620F has a Post which doesn't feature bi-amping/bi-wiring.
Cabinet Type and Port Position
Both Forte IV and R-620F 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 Klipsch R-620F'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 R-620F has external dimensions of 1021.0 x 239.0 x 369.0mm ( 40-3/16 x 9-3/8 x 14-1/2inch) .
Klipsch Forte IV is 112mm shorter and 38mm less deeper than Klipsch R-620F but it is also 184mm 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 Klipsch R-620F is approximately 881.9cm2 / 136.7inch2. The Forte IV requires 59% more surface area than the R-620F which gives it a small disadvantage 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 R-620F weighs 18.64kg / 41lbs. This makes the Forte IV 76% heavier than the R-620F.
Here is a comparison of how Forte IV and R-620F's weights compare with the average, max and min weights in Passive Floor-standing class.
Weight
All Floor-standing Speakers
What's in the Box of Klipsch Forte IV?
Here are the items that are included inside the box of Forte IV:
2 Floorstanding loudspeakers2 Grilles8 Self-adhesive rubber feetOwners ManualCongratulations letterKlipsch brochure
What's in the Box of Klipsch R-620F?
Here are the items that come with the R-620F:
Floorstanding loudspeaker Grille (installed) 2 Feet 4 Screws Quick Setup Guide Important Safety Instructions Warranty Information Loudspeaker Feet note
Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
Sensitivity |
99 dB
vs
96 dB
|
Play louder with same amount of amplification power |
Woofer Size |
12 inches
vs
6.5 inches
|
Larger woofer |
Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
Passive Radiator |
rear-firing 15-inch
vs
None
|
Increases the bass performance |
Height |
909mm
vs
1021mm
|
Easier to fit in smaller spaces |
Number of Woofers |
2
vs
1
|
More woofers |
High Frequency Response |
21k Hz
vs
20k Hz
|
Generates higher frequency |
Base Surface Area |
881cm2 (239x369mm)
vs
1400cm2 (423x331mm)
|
Takes less floor space |
Price per pair* |
998USD
vs
4998USD
|
costs less (*prices may change depending on the seller, location and time) |
General |
Klipsch Heritage Forte IV |
Klipsch Reference R-620F |
Brand |
Klipsch |
Klipsch |
Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
Power Range |
up to 100 watts |
up to 100 watts |
Sensitivity |
99 dB |
96 dB |
Impedance |
8 ohms |
8 ohms |
Frequency Response |
38-20k Hz |
38-21k Hz |
Drivers |
|
|
Woofer Quantity |
1 |
2 |
Woofer Size |
12" |
6.5" |
Woofer Composition |
Fibercomposite |
Copper-spun IMG |
Woofer Surround Material |
Rubber |
Rubber |
Tweeter Size |
1" |
1.0" |
Tweeter Type |
horn-loaded |
n/a |
Aimable Tweeter |
No |
No |
Midrange Driver |
1.75" |
No |
Crossover Frequency |
n/a |
2000Hz |
Firing Direction |
rear |
rear |
Physical Specs |
|
|
Height |
909.0mm (35.8") |
1021.0mm (40.2") |
Width |
423.0mm (16.7") |
239.0mm (9.4") |
Depth |
331.0mm (13") |
369.0mm (14.5") |
Weight |
32.73kg (72lbs) |
18.64kg (41lbs) |
Enclosure |
Passive Radiator |
Bass Reflex |
Finish |
MDF/Wood veneer |
MDF/Wood-grain vinyl |
Available Colors |
Black |
Black |
Grille |
Yes |
Yes |
Moisture Resistancy |
No |
No |
Connections |
|
|
Biamp Inputs |
Yes |
No |
Other |
|
|
Parts Warranty |
10 Years |
5 Years |
Labor Warranty |
10 Years |
5 Years |