In this review, we will be comparing MartinLogan Foundation F2 and R-820F, two Passive Floor-standing speakers from MartinLogan and Klipsch.
Let's have a brief look at the main features
of MartinLogan Foundation F2 and Klipsch R-820F first before getting into our more
detailed comparison.
MartinLogan Foundation F2 Key Specs
- 3-way Design
- 1" Folded Motion Ribbon Tweeter
- 5.5" Midrange
- 3 x 6.5" Aluminum Woofer
- 36-23k Hz Frequency Response
- 92 dB Sensitivity
- Impedance: 4ohms
- Power Range:up to 200watts
- Weight:23.86kg
- Dimensions (H x W x D): 1129.0" x 8-3/4" x 16"( 1129.0 x 223.0 x 407.0mm )
Klipsch R-820F Key Specs
- 2-way Design
- 1" Tweeter
- 2 x 8" Copper-spun IMG Woofer
- 35-21k Hz Frequency Response
- 97 dB Sensitivity
- Impedance: 8ohms
- Power Range:up to 150watts
- Weight:24.55kg
- Dimensions (H x W x D): 1096.0" x 10-7/8" x 16-3/4"( 1096.0 x 277.0 x 426.0mm )
What size room are the MartinLogan Foundation F2 and Klipsch R-820F speakers good for?
The size of the room in which you are planning to use these loudspeakers is an important decision
factor. Here we have compared their suitability to various sizes of environments considering their size
and max power parameters:
| Listening Environment* |
MartinLogan Foundation F2 |
Klipsch R-820F |
| Near-field |
Bad |
Bad |
| Small Room |
Poor |
Poor |
| Mid-size Room |
Good |
Good |
| Large Room |
Good |
Good |
| Very Large Room |
Poor |
Poor |
(* Approximate Room sizes: Small < 100sq. ft / 9 m2,
Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: >
400 sq. ft / 36 m2.
Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual
listening experience changes depending on floor height, room shape, surface materials, listening
position, speaker locations, etc.)
In the following sections, we will get into more detail in order to better understand how the MartinLogan Foundation F2 and Klipsch R-820F 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 MartinLogan Foundation F2 is a 3-way design whereas the R-820F 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 |
MartinLogan Foundation F2 |
Klipsch R-820F |
|
Driver Setup
|
3-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
1 x 5.5-inch |
- |
|
Woofer
|
3 x 6.5-inch
|
2 x 8-inch
|
MartinLogan Foundation F2 features a 1" Gen2 Obsidian Folded Motion Ribbon Tweeter , a 5.5" Midrange and 3 x 6.5" Aluminum Woofer with a Crossover frequency at 330 Hz - 3600 Hz. On the other hand, the R-820F features a 1" Tweeter and 2 x 8" Copper-spun IMG Woofer .
Frequency Response
MartinLogan Foundation F2 has a frequency range of 36-23k Hz whereas R-820F has a frequency range of 35-21k Hz. With a minimum frequency of 35Hz, the R-820F can go slightly deeper then the MartinLogan Foundation F2's min frequency of 36Hz.
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
MartinLogan Foundation F2
High Frequency
Floor-standing Speakers
MartinLogan Foundation F2
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
MartinLogan Foundation F2 is a 4 ohms speaker compared to the R-820F which has a nominal impedance of 8 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 MartinLogan Foundation F2 can provide this impedance level.
These two speakers also have different sensitivity levels. MartinLogan Foundation F2 sensitivity is rated at 92 dB and the R-820F's is rated at 97 dB. This 5 dB difference makes the Klipsch R-820F a more sensitive speaker compared to MartinLogan Foundation F2, hence will play louder with the same amount of watts.
Sensitivity
Floor-standing Speakers
MartinLogan Foundation F2
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.
MartinLogan Foundation F2 can handle a max power of 200 watts RMS from the amp the whereas R-820F has a max power handling value of 150 watts RMS, 50 watts less than the MartinLogan Foundation F2.
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
MartinLogan Foundation F2 features Post type posts and R-820F has a Post type posts. None of these speakers feature bi-amping/bi-wiring.
MartinLogan Foundation F2's Binding post terminals
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 MartinLogan Foundation F2's and Klipsch R-820F's external dimensions. MartinLogan Foundation F2 has external dimensions of 1129.0 x 223.0 x 407.0mm ( 44-7/16inch x 8-3/4inch x 16inch ) whereas Klipsch R-820F has external dimensions of 1096.0 x 277.0 x 426.0mm ( 43-1/8 x 10-7/8 x 16-3/4inch) .
MartinLogan Foundation F2 is 54mm narrower and 19mm less deeper than Klipsch R-820F but it is also 33mm taller.
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 MartinLogan Foundation F2 is approximately 907.6cm2 / 140.7inch2 and base area of the Klipsch R-820F is approximately 1180.0cm2 / 182.9inch2. The MartinLogan Foundation F2 requires 23% less surface area than the R-820F which gives it a small advantage on placement in tight spaces.