Polk Audio TSi400 is a 2-way Passive Bass Reflex Floor-standing speaker by Polk Audio. It features a 1" Tweeter and 3 x 5.25" Organic Fiber Woofer. The speaker has a frequency range of 44-24k Hz and a sensitivity of 91 dB. Polk TSi400 has an MSRP of 498$ per pair.
Room Size Suitability
The size of the room where you plan to use the Polk TSi400 is a crucial factor in your decision. We have assessed its suitability for various room sizes based on its dimensions and maximum power output:
| Listening Environment* |
Suitability |
| Near-field | Bad |
| Small Room | Poor |
| Mid-size Room | Good |
| Large Room | Good |
| Very Large Room | 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.)
Polk Audio's TSi Series of Loudspeakers
TSi400 is a member of Polk Audio's TSi series of Passive speakers. Below you can see the main specs of these speakers.
Polk Audio TSi Series Speakers
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Frequency Response of the Polk TSi400 Speaker
Polk TSi400 has a Frequency response range of 44-24k Hz at ±3dB and Power Range of 20-200 watts. With a minimum frequency of 44 Hz, TSi400 delivers deep bass that will likely satisfy most listeners, especially those who enjoy music. However, movie enthusiasts and music fans who prefer a full range of sound may still benefit from adding a subwoofer.
To focus on the subwoofers that are in a similar price range with Polk TSi400, check out the Powered Subwoofers under $500. Alternatively, find the Full list of Powered Subwoofers regardless of the price.
Here we have a comparison of how TSi400's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
Low Frequency
Floor-standing Speakers
High Frequency
Floor-standing Speakers
Impedance and Sensitivity
Polk TSi400's nominal impedance level is
8 ohms and has a sensitivity of
91 dB.
Sensitivity
Floor-standing Speakers
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Polk Audio TSi400 is not considered a difficult to drive speaker from nominal Impedance perspective.
Sensitivity
91dB of the Polk Audio TSi400 is considered a high sensitivity compared to average stereo speaker which makes TSi400 an easy to drive from Sensitivity perspective. If you are planning to power your speaker with a Tube amp which are generally very low power, the Polk TSi400 will be a good choice.
Check the amplifiers that are in a similar price range to the Polk TSi400:
Input Type
TSi400 has 5-way post type connectors and lets bi-amping/bi-wiring. Bi-wiring can enhance the overall transparency of your loudspeakers by using separate speaker wires for the low and high-frequency drivers from a single amplifier. Bi-amping, on the other hand, involves using separate amplifiers for the high and low-frequency drivers, potentially resulting in a greater dynamic range and reduced distortion.
Polk TSi400 External Dimensions and Weight
Polk TSi400 has external dimensions of (Height x Width x Depth) 38-3/4 x 8-3/16 x 14-1/2inch (985.0 x 208.0 x 369.0mm ).
Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base area of Polk TSi400 is approximately 767.5cm2 / 119.0inch2.
WeightThe Polk TSi400 weighs 14.55kg / 32lbs per piece. Here is a comparison of how TSi400's weight compares with the average, max and min weights in its class.
Weight
All Floor-standing Speakers
Weight
Floor-standing Speakers under $500
Cabinet type and Materials
Polk TSi400 has a
Bass Reflex type cabinet and a Wood-grain vinyl finish. Bass Reflex type loudspeakers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs.
Port Position
Polk TSi400 is a bottom-firing port speaker
Available colors
Polk TSi400 is available in Cherry.
Does the Polk TSi400 come with a Grille?
TSi400 comes with grilles. The purpose of the grille is to protect the delicate driver elements from external impacts while still allowing the sound to pass as clearly as possible.
What's in the Box of Polk TSi400?
Here are the items that are included inside the box of TSi400:
Tower speakerDetachable cloth grille (installed)Owners ManualWall-Mount templateOnline registration sheetPolk Audio product brochure
Recommended Accessories
Here is a list of accessories that we think you may need for the Polk Audio TSi400.
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.