Polk Audio CSi A6 is a 2-way Passive Bass Reflex Center Channel speaker by Polk Audio. Center channel speaker is an important component of a home theater system set-up as it delivers the listener significant part of the on-screen dialogue from your television. It features a 1" Dynamic Balance Tweeter and 2 x 6.5" Dynamic Balance polymer composite Woofer. The speaker has a frequency range of 55-26k Hz and a sensitivity of 90 dB.
Room Size Suitability
The size of the room where you plan to use the Polk CSi A6 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 | Poor |
| Small Room | Average |
| Mid-size Room | Good |
| Large Room | Average |
| 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.)
**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.
Frequency Response of the Polk CSi A6 Speaker
Polk CSi A6 has a Frequency response range of 55-26k Hz at ±3dB and Power Range of 20-200 watts. With a minimum frequency of 55 Hz, CSi A6 delivers moderate bass depth so depending on your use case, you might want to consider adding a subwoofer to your system.
Visit our Powered Subwoofers section to find out more about the available subwoofer options.
Here we have a comparison of how CSi A6's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
Low Frequency
Center Channel Speakers
High Frequency
Center Channel Speakers
Impedance and Sensitivity
Polk CSi A6's nominal impedance level is
8 ohms and has a sensitivity of
90 dB.
Sensitivity
Center Channel Speakers
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Polk Audio CSi A6 is not considered a difficult to drive speaker from nominal Impedance perspective.
Sensitivity
90dB of the Polk Audio CSi A6 is an average sensitivity for stereo speaker so it is neither easy nor difficult to drive Sensitivity wise.
Check the amplifiers that are in a similar price range to the Polk CSi A6:
Input Type
CSi A6 features 5-Way post type connectors. Bi-amping and Bi-wiring are not possible.
Polk CSi A6 Back View
Polk CSi A6 External Dimensions and Weight
Polk CSi A6 has external dimensions of (Height x Width x Depth) 7-13/16 x 24-1/16 x 14-1/4inch (199.0 x 612.0 x 362.0mm ).
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 CSi A6 is approximately 2215.4cm2 / 343.4inch2.
WeightThe Polk CSi A6 weighs 13.18kg / 29lbs per piece. Here is a comparison of how CSi A6's weight compares with the average, max and min weights in its class.
Weight
All Center Channel Speakers
Cabinet type and Materials
Polk CSi A6 has a
Bass Reflex type cabinet. 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.
Speaker Feet
Polk CSi A6 comes with the parts below which you can use to secure your loudspeaker on the surface that you are putting on:
One 9.5-inch kickstand One 5.5-inch kickstand (installed) 4 Self-adhesive rubber feet It is always recommended to use some kind of feet under all types of speakers. Besides limiting the movement of the speakers, it also compensates for non-flat surfaces and limits the contact surface area of the speaker. Rubber based feet also help isolating the vibrations within certain frequency ranges.
Port Position
Polk CSi A6 is a rear-firing port speaker so you have to make sure you leave enough space between the back of the speaker and wall or bookshelf so that it has room to breathe.
Available colors
Polk CSi A6 is available in Black and Cherry.
Does the Polk CSi A6 come with a Grille?
CSi A6 comes with magnetic 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. Since the included grille of the CSi A6 is magnetic type, it is very easy to put it on and off.
Polk CSi A6 with Grille
What's in the Box of Polk CSi A6?
Here are the items that are included inside the box of CSi A6:
One cherry center channel speakerOne 9.5-inch kickstandOne 5.5-inch kickstand (installed)4 Self-adhesive rubber feetOwners ManualOnline registration sheetPolk Audio product brochure
Recommended Accessories
Here is a list of accessories that we think you may need for the Polk Audio CSi A6.
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.