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Polk RTi A5 vs Polk RTi A3 Comparison

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Polk RTi A5

Passive Floor-standing | 40-26k Hz

Polk Audio RTi A5
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Polk RTi A3

Passive Bookshelf | 50-26k Hz

Polk Audio RTi A3
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Polk RTi A5 Polk RTi A5
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Polk RTi A3 Polk RTi A3
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Polk RTi A5
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Polk RTi A3
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Polk RTi A5 vs Polk RTi A3 Speaker Comparison

In this review, we will be comparing two different type of speakers by Polk Audio. Polk Audio RTi A5 is a Floor-standing speaker whereas the RTi A3 is a Bookshelf speaker.

Let's have a brief look at the main features of Polk RTi A5 and Polk RTi A3 first before getting into our more detailed comparison.

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 )

Polk RTi A3 Key Specs

  • 2-way Design
  • 1" Dome Tweeter
  • 6.5" Polymer composite Woofer
  • 50-26k Hz Frequency Response
  • 89 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:20-150watts
  • Weight:7.26kg
  • Dimensions (H x W x D): 374.7" x 8.4" x 14.0"( 374.7 x 214.4 x 355.6mm )

RTi A5 and RTi A3 are members of Polk Audio's RTi series of speakers. Below you can find the loudspeakers from this series.

Polk Audio RTi Series History
Model Body Frequency SensitivityImpedance Woofer
Polk RTi A5
Floor-standing 40-26k Hz 90 dB8Ω 2 x 6.5"
Polk RTi A9
  
Floor-standing 30-26k Hz 90 dB8Ω 3 x 7"
Polk RTi A3
Bookshelf 50-26k Hz 89 dB8Ω 1 x 6.5"
Polk RTi A1
  
Bookshelf 60-26k Hz 89 dB8Ω 1 x 5.25"

What size room are the Polk RTi A5 and Polk RTi A3 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* Polk RTi A5 Polk RTi A3
Near-field Bad Poor
Small Room Poor Average
Mid-size Room Average Good
Large Room Good Average
Very Large Room Average 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 Polk RTi A5 and Polk RTi A3 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.


**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.


Drivers

Both RTi A5 and RTi A3 are 2-way speakers.

Driver Polk RTi A5 Polk RTi A3
Driver Setup 2-way 2-way
Tweeter 1-inch 1-inch
Midrange - -
Woofer 2 x 6.5-inch 1 x 6.5-inch

RTi A5 features a 1" Tweeter and 2 x 6.5" Polymer composite Woofer . On the other hand, the RTi A3 features a 1" silk polymer composite Dome Tweeter and 1 x 6.5" Polymer composite Woofer with a Crossover frequency at 2800Hz.

Frequency Response

RTi A5 has a frequency range of 40-26k Hz whereas RTi A3 has a frequency range of 50-26k 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 RTi A3's min frequency of 50Hz.

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

RTi A5
RTi A3
Min
Average
Max
High Frequency

Floor-standing Speakers

Polk RTi A5
Polk RTi A3
Min
Average
Max

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

RTi A5 and RTi A3 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. RTi A5 sensitivity is rated at 90 dB and the RTi A3's is at 89 dB. This 1 dB difference makes the Polk RTi A5 a more sensitive speaker compared to Polk RTi A3, hence will play louder with the same amount of watts.

Sensitivity

Floor-standing Speakers

RTi A5
RTi A3
Min
Average
Max

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.

RTi A5 can handle a max power of 250 watts RMS from the amp the whereas RTi A3 has a max power handling value of 150 watts RMS, 100 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 RTi A5 and RTi A3 features dual binding post speaker terminals for bi-amping or bi-wiring.

Cabinet Type and Port Position

RTi A5 has a front firing port whereas RTi A3 has a back and front firing ports. Polk RTi A5's front-firing port gives more flexibility in placement in regards to proximity to walls compared to Polk RTi A3 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 Polk RTi A5's and Polk RTi A3's external dimensions. 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) whereas Polk RTi A3 has external dimensions of 374.7 x 214.4 x 355.6mm ( 14.7 x 8.4 x 14.0inch) .

Polk RTi A5 is clearly the larger of the two speakers. Its body is 54.6mm wider, 632.3mm taller and 48.4mm deeper than Polk RTi A3.

Below you can see the front view size comparison of Polk RTi A5 and Polk RTi A3 in scale.

Polk RTi A5 vs Polk RTi A3 Size Comparison - Front View
Comparison image of Polk RTi A5 and Polk RTi A3 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 Polk RTi A5 is approximately 1086.8cm2 / 168.5inch2 and base area of the Polk RTi A3 is approximately 762.4cm2 / 118.2inch2. The RTi A5 requires 43% more surface area than the RTi A3 which gives it a small disadvantage on placement in tight spaces.

What's in the Box of Polk RTi A5?

Here are the items that are included inside the box of RTi A5:
  • Cherry floor-standing speaker
  • Detachable black cloth grille
  • 4 Screw-on spike feet
  • Owners Manual
  • Online registration sheet
  • Polk Audio product brochure
  • What's in the Box of Polk RTi A3?

    Here are the items that come with the RTi A3:
  • 2 Cherry bookshelf speakers
  • 2 Self-tapping screws
  • 8 Self-adhesive rubber feet
  • Owner's Manual
  • Template
  • Online registration sheet
  • Polk Audio product brochure

  • Reasons to choose Polk Audio RTi A5 over Polk Audio RTi A3
    Max Input Power 250 watts vs 150 watts Handle more power from your amplifier
    Sensitivity 90 dB vs 89 dB Play louder with same amount of amplification power
    Number of Woofers 2 vs 1 More woofers
    Low Frequency Response 40 Hz vs 50 Hz Generates deeper bass

    Reasons to choose Polk Audio RTi A3 over Polk Audio RTi A5

    Mounting Bracket Yes vs No Allows mounting on walls
    Height 374mm vs 1007mm Easier to fit in smaller spaces
    Base Surface Area 762cm2 vs 1086cm2 Takes less floor space
    Polk RTi A5 vs Polk RTi A3 Specs Table
    Detailed comparison of specifications
    General Polk Audio RTi A5 Polk Audio RTi A3
    Brand Polk Audio Polk Audio
    Speaker Type Floor-standing speaker Bookshelf speakers
    Power Range 20-250 watts 20-150 watts
    Sensitivity 90 dB 89 dB
    Impedance 8 ohms 8 ohms
    Frequency Response 40-26k Hz 50-26k Hz
    Drivers
    Woofer Quantity 2 1
    Woofer Size 6.5" 6.5"
    Woofer Composition Polymer composite Polymer composite
    Woofer Surround Material Butyl Rubber Butyl rubber
    Tweeter Size 1" 1"
    Tweeter Type n/a Dome
    Aimable Tweeter No No
    Midrange Driver No No
    Crossover Frequency n/a 2800Hz
    Firing Direction front back and front
    Physical Specs
    Height 1007.0mm (39.6") 374.7mm (14.8")
    Width 269.0mm (10.6") 214.4mm (8.4")
    Depth 404.0mm (15.9") 355.6mm (14")
    Weight 18.18kg (40lbs) 7.26kg (16lbs)
    Enclosure Bass Reflex Bass Reflex
    Finish Real wood veneer Real wood veneer
    Available Colors Cherry Black, Cherry
    Mounting Bracket No Keyhole
    Recommended Stand Height n/a 24-31"
    Grille Yes n/a
    Moisture Resistancy No No
    Connections
    Biamp Inputs Yes Yes
    Other
    Parts Warranty 5 Years 5 Years
    Labor Warranty 5 Years 5 Years

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