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Polk TSi100 vs Sony SS-CS5 Comparison

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Polk TSi100

Passive Bookshelf | 61-24k Hz

Polk Audio TSi100
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Sony SS-CS5

Passive Bookshelf | 53-50k Hz

Sony SS-CS5
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Polk TSi100 Polk TSi100
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Sony SS-CS5 Sony SS-CS5
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Polk TSi100
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Sony SS-CS5
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Polk TSi100 vs Sony SS-CS5 Speaker Comparison

In this review, we will be comparing TSi100 and SS-CS5, two Passive Bookshelf speakers from Polk Audio and Sony.

Let's have a brief look at the main features of Polk TSi100 and Sony SS-CS5 first before getting into our more detailed comparison.

Polk TSi100 Key Specs

  • 2-way Design
  • 1" Dome Tweeter
  • 5.25" Organic Fiber Woofer
  • 61-24k Hz Frequency Response
  • 89 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:20-100watts
  • Weight:4.53kg
  • Dimensions (H x W x D): 279.4" x 7.0" x 10.1"( 279.4 x 177.8 x 259.0mm )

Sony SS-CS5 Key Specs

  • 3-way Design
  • 1" Soft-Dome Tweeter
  • 0.75" Super Tweeter
  • 5.25" Mica Reinforced Cellular (MRC) Woofer
  • 53-50k Hz Frequency Response
  • 87 dB Sensitivity
  • Impedance: 6ohms
  • Power Range:up to 100watts
  • Weight:4.50kg
  • Dimensions (H x W x D): 335.0" x 7.0" x 8.6"( 335.0 x 178.0 x 220.0mm )

What size room are the Polk TSi100 and Sony SS-CS5 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 TSi100 Sony SS-CS5
Near-field Average Average
Small Room Good Good
Mid-size Room Average Average
Large Room Poor Poor
Very Large Room Bad Bad

(* 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 TSi100 and Sony SS-CS5 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

One of the fundamental differences between these two speakers is that TSi100 is a 2-way design whereas the SS-CS5 is a 3-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 Polk TSi100 Sony SS-CS5
Driver Setup 2-way 3-way
Super Tweeter - 0.75-inch
Tweeter 1-inch 1-inch
Midrange - -
Woofer 1 x 5.25-inch 1 x 5.25-inch

TSi100 features a 1" Dome Tweeter and 1 x 5.25" Organic Fiber Woofer with a Crossover frequency at 2500Hz. On the other hand, the SS-CS5 features a 1" polyester fiber Soft-Dome Tweeter , a 0.75" Supertweeter and 1 x 5.25" Mica Reinforced Cellular (MRC) Woofer .

Frequency Response

TSi100 has a frequency range of 61-24k Hz whereas SS-CS5 has a frequency range of 53-50k Hz. With a minimum frequency of 53Hz, the SS-CS5 can go significantly deeper on the low side and provide stronger bass compared to the TSi100's min frequency of 61Hz.

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 Bookshelf class in our database.

Low Frequency

Bookshelf Speakers

TSi100
SS-CS5
Min
Average
Max
High Frequency

Bookshelf Speakers

Polk TSi100
Sony SS-CS5
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

TSi100 is a 8 ohms speaker compared to the SS-CS5 which has a nominal impedance of 6 ohms.

These two speakers also have different sensitivity levels. TSi100 sensitivity is rated at 89 dB and the SS-CS5's is rated at 87 dB. This 2 dB difference makes the Polk TSi100 a more sensitive speaker compared to Sony SS-CS5, hence will play louder with the same amount of watts.

Sensitivity

Bookshelf Speakers

TSi100
SS-CS5
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.

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

TSi100 features Post type posts and SS-CS5 has a Post type posts. None of these speakers feature bi-amping/bi-wiring.

Sony SS-CS5Post Terminals
Sony SS-CS5's Post terminals

Cabinet Type and Port Position

Both TSi100 and SS-CS5 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 Polk TSi100's and Sony SS-CS5's external dimensions. Polk TSi100 has external dimensions of 279.4 x 177.8 x 259.0mm ( 11.0 x 7.0 x 10.1inch) whereas Sony SS-CS5 has external dimensions of 335.0 x 178.0 x 220.0mm ( 13.1 x 7.0 x 8.6inch) .

Polk TSi100 is 0.19999999999999mm narrower and 55.6mm shorter than Sony SS-CS5 but it is also 39mm deeper.

Below you can see the front view size comparison of Polk TSi100 and Sony SS-CS5 in scale.

Polk TSi100 vs Sony SS-CS5 Size Comparison - Front View
Comparison image of Polk TSi100 and Sony SS-CS5 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 TSi100 is approximately 460.5cm2 / 71.4inch2 and base area of the Sony SS-CS5 is approximately 391.6cm2 / 60.7inch2. The TSi100 requires 18% more surface area than the SS-CS5 which gives it a small disadvantage on placement in tight spaces.

Here is an another comparison that shows both speakers on a BDI Octave Media Cabinet, next to a standard size amplifier and turntable in scale:

Polk TSi100 vs Sony SS-CS5 Size Comparison on a Media Console
Size Comparison image of Polk TSi100 and Sony SS-CS5 on a Media Console
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 Polk TSi100 weighs 4.53kg / 10lbs and the Sony SS-CS5 weighs 4.50kg / 9.9lbs. This makes the TSi100 1% heavier than the SS-CS5.

Here is a comparison of how TSi100 and SS-CS5's weights compare with the average, max and min weights in Passive Bookshelf class.

Weight
All Bookshelf Speakers
Polk TSi100
Sony SS-CS5
Min
Average
Max

What's in the Box of Polk TSi100?

Here are the items that are included inside the box of TSi100:
  • 2 Black bookshelf speakers
  • Detachable cloth grille (installed)
  • 8 Self-adhesive rubber feet
  • Owner's Manual
  • Wall-Mount template
  • Online registration sheet
  • Polk Audio product brochure

  • Reasons to choose Polk Audio TSi100 over Sony SS-CS5
    Sensitivity 89 dB vs 87 dB Play louder with same amount of amplification power
    Nominal Impedance 8 ohms vs 6 ohms Less selective with amplifiers
    Mounting Bracket Yes vs No Allows mounting on walls
    Height 279mm vs 335mm Easier to fit in smaller spaces

    Reasons to choose Sony SS-CS5 over Polk Audio TSi100

    Driver Setup 3-way vs 2-way Have a dedicated mid-range driver
    Low Frequency Response 53 Hz vs 61 Hz Generates deeper bass
    High Frequency Response 50k Hz vs 24k Hz Generates higher frequency
    Base Surface Area 391cm2 vs 460cm2 Takes less floor space
    Price per pair* 148USD vs 149USD costs less (*prices may change depending on the seller, location and time)
    Polk TSi100 vs Sony SS-CS5 Specs Table
    Detailed comparison of specifications
    General Polk Audio TSi100 Sony SS-CS5
    Brand Polk Audio Sony
    Speaker Type Bookshelf speakers Bookshelf speakers
    Power Range 20-100 watts up to 100 watts
    Sensitivity 89 dB 87 dB
    Impedance 8 ohms 6 ohms
    Frequency Response 61-24k Hz 53-50k Hz
    Drivers
    Woofer Quantity 1 1
    Woofer Size 5.25" 5.25"
    Woofer Composition Organic Fiber Mica Reinforced Cellular (MRC)
    Woofer Surround Material Butyl Rubber Rubber
    Tweeter Size 1" 1"
    Tweeter Type Dome Soft-Dome
    Aimable Tweeter No No
    Midrange Driver No No
    Crossover Frequency 2500Hz n/a
    Firing Direction rear rear
    Physical Specs
    Height 279.4mm (11") 335.0mm (13.2")
    Width 177.8mm (7") 178.0mm (7")
    Depth 259.0mm (10.2") 220.0mm (8.7")
    Weight 4.53kg (10lbs) 4.50kg (9.9lbs)
    Enclosure Bass Reflex Bass Reflex
    Finish Wood-grain vinyl MDF/Wood-veneer
    Available Colors Black, Cherry Black
    Mounting Bracket Keyhole No
    Recommended Stand Height 16-30" n/a
    Grille Yes Yes
    Moisture Resistancy No No
    Connections
    Biamp Inputs No No
    Other
    Parts Warranty 5 Years 2 years
    Labor Warranty 5 Years 2 years

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