In this review, we will be comparing La Scala AL5 and RTi A5, two Passive Floor-standing speakers from Klipsch and Polk Audio.
Let's have a brief look at the main features
of Klipsch La Scala AL5 and Polk RTi A5 first before getting into our more
detailed comparison.
Klipsch La Scala AL5 Key Specs
- 3-way Design
- 1" horn-loaded Tweeter
- 2" Midrange
- 15" fiber-composite cone with folded horn Woofer
- 51-20k Hz Frequency Response
- 105 dB Sensitivity
- Impedance: 8ohms
- Power Range:up to 100watts
- Weight:91.36kg
- Dimensions (H x W x D): 1016.0" x 24-1/4" x 25-5/16"( 1016.0 x 616.0 x 643.0mm )
Polk RTi A5 Key Specs
- 2-way Design
- 1" Tweeter
- 2 x 6.5" Polymer composite Woofer
- 40-26k Hz Frequency Response
- 90 dB Sensitivity
- Impedance: 8ohms
- Power Range:20-250watts
- Weight:18.18kg
- Dimensions (H x W x D): 1007.0" x 10-9/16" x 15-7/8"( 1007.0 x 269.0 x 404.0mm )
In the following sections, we will get into more detail in order to better understand how the Klipsch La Scala AL5 and Polk RTi A5 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 La Scala AL5 is a 3-way design whereas the RTi A5 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 La Scala AL5 |
Polk RTi A5 |
|
Driver Setup
|
3-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
1 x 2-inch |
- |
|
Woofer
|
1 x 15-inch
|
2 x 6.5-inch
|
La Scala AL5 features a 1" polyimide diaphragm compression horn-loaded Tweeter , a 2" Midrange and 1 x 15" fiber-composite cone with folded horn Woofer . On the other hand, the RTi A5 features a 1" Tweeter and 2 x 6.5" Polymer composite Woofer .
Frequency Response
La Scala AL5 has a frequency range of 51-20k Hz whereas RTi A5 has a frequency range of 40-26k Hz. With a minimum frequency of 40Hz, the RTi A5 can go significantly deeper on the low side and provide stronger bass compared to the La Scala AL5's min frequency of 51Hz.
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
La Scala AL5 and RTi A5 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. La Scala AL5 sensitivity is rated at 105 dB and the RTi A5's is at 90 dB. This 15 dB difference makes the Klipsch La Scala AL5 a more sensitive speaker compared to Polk RTi A5, 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.
La Scala AL5 can handle a max power of 250 watts RMS from the amp the whereas La Scala AL5 has a max power handling value of 100 watts RMS , 150 watts less than the RTi A5.
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 La Scala AL5 and RTi A5 features dual binding post speaker terminals for 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 La Scala AL5's and Polk RTi A5's external dimensions. Klipsch La Scala AL5 has external dimensions of 1016.0 x 616.0 x 643.0mm ( 40 x 24-1/4 x 25-5/16inch) whereas Polk RTi A5 has external dimensions of 1007.0 x 269.0 x 404.0mm ( 39-5/8 x 10-9/16 x 15-7/8inch) .
Klipsch La Scala AL5 is clearly the larger of the two speakers. Its body is 347mm wider, 9mm taller and 239mm deeper than Polk RTi A5.
Below you can see the front view size comparison of Klipsch La Scala AL5 and Polk RTi A5 in scale.
Comparison image of Klipsch La Scala AL5 and Polk RTi A5 Size and External Dimensions
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 La Scala AL5 is approximately 3960.9cm2 / 613.9inch2 and base area of the Polk RTi A5 is approximately 1086.8cm2 / 168.5inch2. The La Scala AL5 requires 264% more surface area than the RTi A5 which gives it a small disadvantage on placement in tight spaces.