In this review, we will be comparing Sonetto VIII and RTi A5, two Passive Floor-standing speakers from Sonus Faber and Polk Audio.
Let's have a brief look at the main features
of Sonus Sonetto VIII and Polk RTi A5 first before getting into our more
detailed comparison.
Sonus Sonetto VIII Key Specs
- 3-way Design
- 1.15" high definition DAD Dome Tweeter
- 6" Midrange
- 3 x 7" aluminum cone Woofer
- 36-25k Hz Frequency Response
- 90 dB Sensitivity
- Impedance: 4ohms
- Power Range:50-300watts
- Weight:26.30kg
- Dimensions (H x W x D): 1188.0" x 11" x 17"( 1188.0 x 283.0 x 427.0mm )
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 )
What size room are the Sonus Sonetto VIII and Polk RTi A5 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* |
Sonus Sonetto VIII |
Polk RTi A5 |
| Near-field |
Bad |
Bad |
| Small Room |
Poor |
Poor |
| Mid-size Room |
Average |
Average |
| Large Room |
Good |
Good |
| Very Large Room |
Average |
Average |
(* 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 Sonus Sonetto VIII 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 Sonetto VIII 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 |
Sonus Sonetto VIII |
Polk RTi A5 |
|
Driver Setup
|
3-way
|
2-way
|
|
Tweeter
|
1.15-inch
|
1-inch
|
|
Midrange
|
1 x 6-inch |
- |
|
Woofer
|
3 x 7-inch
|
2 x 6.5-inch
|
Sonetto VIII features a 1.15" high definition DAD Dome Tweeter , a 6" Midrange and 3 x 7" aluminum cone Woofer with a Crossover frequency at 270 and 3.000 Hz. On the other hand, the RTi A5 features a 1" Tweeter and 2 x 6.5" Polymer composite Woofer .
Frequency Response
Sonetto VIII has a frequency range of 36-25k Hz whereas RTi A5 has a frequency range of 40-26k Hz. With a minimum frequency of 36Hz, the Sonetto VIII can go slightly deeper then the RTi A5'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
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
Sonetto VIII is a 4 ohms speaker compared to the RTi A5 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 Sonetto VIII can provide this impedance level.
On the other hand, they have the same sensitivity of 90 dBdB.
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.
Sonetto VIII can handle a max power of 300 watts RMS from the amp the whereas RTi A5 has a max power handling value of 250 watts RMS, 50 watts less than the Sonetto VIII.
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 Sonetto VIII and RTi A5 features dual binding post speaker terminals for bi-amping or bi-wiring.
Sonus Sonetto VIII's Binding post terminals allows Bi-amping or bi-wiring
Cabinet Type and Port Position
Sonetto VIII has a bottom firing port whereas RTi A5 has a front firing ports. Polk RTi A5's front-firing port gives more flexibility in placement in regards to proximity to walls compared to Sonus Sonetto VIII with its rear-firing port.
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 Sonus Sonetto VIII's and Polk RTi A5's external dimensions. Sonus Sonetto VIII has external dimensions of 1188.0 x 283.0 x 427.0mm ( 47 x 11 x 17inch) 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) .
Sonus Sonetto VIII is clearly the larger of the two speakers. Its body is 14mm wider, 181mm taller and 23mm deeper than Polk RTi A5.
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 Sonus Sonetto VIII is approximately 1208.4cm2 / 187.3inch2 and base area of the Polk RTi A5 is approximately 1086.8cm2 / 168.5inch2. The Sonetto VIII requires 11% more surface area than the RTi A5 which gives it a small disadvantage on placement in tight spaces.