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Polk Audio TSi400

Floor-standing speaker (Cherry)

147 Reviews | 9 questions - 31 answers

Item # 107TSI400C

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Was: $299.99

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Our take on the Polk Audio TSi400

Whether you're looking for speakers for your stereo music system or seeking out new front speakers for your home theater, you can count on the Polk TSi400 for clean, engaging sound. Its silk tweeter delivers sparkling highs, while three polycarbonate woofers churn out accurate mids and lows. The well-braced cabinet fights resonance so the details in your music and movies shine through. Dual five-way binding posts let you bi-amp or bi-wire the TSi400 for even better performance — a rare feature for a speaker in this price range.

Whether you're looking for speakers for your stereo music system or seeking out new front speakers for your home theater, you can count on the Polk TSi400 for clean, engaging sound. Its silk tweeter delivers sparkling highs, while three polycarbonate woofers churn out accurate mids and lows. The well-braced cabinet fights resonance so the details in your music and movies shine through. Dual five-way binding posts let you bi-amp or bi-wire the TSi400 for even better performance — a rare feature for a speaker in this price range.

A woodgrain vinyl finish gives the TSi400 a refined look, capped by an elegant piano black top plate. At the base of the speaker you'll find sturdy stabilizer feet to keep it anchored to your floor, regardless of whether it's carpeted or non-carpeted. And since the speaker's footprint takes up less than one square foot, you can enjoy high-impact tower speaker sound without sacrificing a lot of space.

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Product Highlights:

  • bass-reflex (ported) design
  • frequency response 44-24,000 Hz (-3dB)
  • handles 20-200 watts
  • 1" Dynamic Balance® silk dome tweeter
  • three 5-1/4" polycarbonate woofers
  • 8-ohm impedance
  • sensitivity 91 dB
  • dual 5-way binding post terminals
  • woodgrain vinyl finish with piano black top plate
  • 8-3/16"W x 38-3/4"H x 14-1/2"D
  • warranty: 5 years
  • Our 60-day money-back guarantee
Priced each

    What's in the Box:

    • Cherry tower speaker
    • Detachable cloth grille (installed)
    • Owner's Manual
    • Wall-Mount template
    • Online registration sheet
    • Polk Audio product brochure

    Awesome sound.the tsi400 for the $ is the best in it's class

    Steve, Painter, VA


    Polk Audio TSi400 Reviews

    Average Customer Review(s):

    (147 Reviews)
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    Hands-on research

    Features and Specs

    Enclosure Bass Reflex
    Finish Wood-grain vinyl
    Color Cherry
    Tweeter Dome
    Tweeter Size (inches) 1
    Midrange Size (inches) ---
    Woofer Size (inches) 5.25
    Woofer Composition Organic Fiber
    Woofer Surround Butyl Rubber
    Built-in Powered Sub No
    Video-Shielded No
    Connector Type 5-way post
    Bi-amp Inputs Yes
    Parts Warranty 5 Years
    Labor Warranty 5 Years
    Power Range 20-200
    Frequency Response 44-24k Hz
    Sensitivity 91 dB
    Impedance (Ohms) 8
    Subwoofer Amp Power ---
    Height (inches) 38-3/4
    Width (inches) 8-3/16
    Depth (inches) 14-1/2
    Weight 32 lbs

    Product Research

    Driver Technology
    Enclosure Design
    Mounting Options

    Driver Technology

    Dynamic Balance: Dynamic Balance is a proprietary Polk Audio technology using laser imaging to determine what combination of speaker materials create the least amount of resonance. Eliminating resonance in speakers results in a wide, smooth response and low distortion.

    Klippel Optimized: Using a state-of-the-art Klippel Distortion Analyzer, Polk engineers were able to optimize the speaker structure and cabinet design for the best possible performance, even at extreme listening levels.

    High Efficiency Design: Compatible with practically any AV receiver, these speakers produce sound that is open, spacious and clear, even when driven by modestly-powered amplifiers and receivers.

    Bi-Laminate Composite Woofers: The speaker features three 5.25" bi-laminate composite dynamic balance drivers which are light and stiff for deep bass response and low distortion. The multiple smaller driver configuration is capable of better detail than one single large woofer. This design also projects sound over a wider area, so there is a broader "sweet-spot". For high performance durability, each woofer uses a butyl rubber surround.

    Silk dome Tweeters: The speaker features a 1.0" silk dome dynamic balance tweeter for detailed highs. The tweeter features mylar bypass capacitors in the crossovers to extend high frequency response and improve detail and transparency.

    Frequency Response: The overall frequency response is 34Hz-25kHz and the -3dB frequency response is 44-24kHz.

    Enclosure Design

    Quality Built Cabinets: The TSi speaker cabinets are extensively braced MDF with ¾" thick baffles. With pewter accents, a piano black top plate and removable black grille, TSi speakers look awesome and take up less than one square foot. All models are available in a choice of black or cherry wood-grain vinyl finish.

    Narrow Baffle Geometry: Narrow baffle geometry is a design that creates a sleek looking speaker with great sound. The high quality cabinet is slender and tucks away easily in your room. The smaller-diameter speaker components are lighter in mass, translating to clearer sound.

    Flared Ports: All TSi speakers feature critically-tuned flared ports. Flared ports minimize port noise ("chuffing") and ensure good low frequency extension with low distortion. With flared ports, TSi speakers reveal realistic, natural, full-bodied sound with rich bass. These TSi floorstanding speakers feature a down-firing power port.


    Dual 5-Way Binding Posts: The speaker has two sets of gold-plated 5-way binding posts connected by gold-plated jumpers. Using the dual 5-way binding posts, you can bi-amp or bi-wire the speakers.

    Mounting Options

    Placement: Create an equilateral triangle between the speaker and the listening position. If you notice video distortion or discoloration, immediately move the speaker away from the video source.

    Built-In Conical Feet: The speaker features four built-in conical feet to ensure stability for precise bass response and superior imaging.

    Our Product Research Team

    At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

    Q & A

    Customer Q&A

    Crutchfield asked  
    Why did you buy this?

    Compared multiple models and types. Thought this was the best for the price. Reviews were positive as well. [ Robert  Oct 18, 2018 ]
    Small living room and seem to be a great buy. [ Michael  Sep 18, 2018 ]
    TSi400 are very similar to TSx330T that I purchased 2 years ago. [ Thomas  Jun 27, 2018 ]
    value & size of foot print [ KELLY  May 25, 2018 ]
    Its big, its black and was a good price point for the frequency response. [ Timothy  May 16, 2018 ]
    Great product great value [ J  May 15, 2018 ]
    replacing sound bar [ Dennis  Apr 22, 2018 ]
    Thanks to Allison, I spoke with her several days ago. [ Marina  Apr 16, 2018 ]
    Needed to upgrade floor speakers and these have good reviews and a great price. [ Jahmel  Apr 16, 2018 ]
    Specs, price [ William H.  Mar 04, 2018 ]
    Looking for new home speakers to replace 20 year old units by Bose. Worked with the tech for quite a bit with questions and recommendations. Through the conversation this is what would best fit my needs. [ Chad  Jan 22, 2018 ]
    good reviews, nice looking speakers, good price- first Polk purchase [ RANDY  Dec 31, 2017 ]
    Quality, price (on sale), and Norm's guidance. [ Steve  Dec 04, 2017 ]
    Just good quality and I wanted floor standing plus price was right. [ John  Nov 28, 2017 ]
    reviews [ Judy  Nov 23, 2017 ]
    A good buy for the price. I hope. [ Jackson  Sep 29, 2017 ]
    Awesome !! [ Christopher  Aug 11, 2017 ]
    Looking for upgrade from TSi 100. And to make a coherent surround system. Used the TSi 100 pair for the rear channel. [ Alan  Jun 09, 2017 ]
    Good write up by the Crutchfield reviewer. I upgraded from my consideration of the TSi300 after reading the reviews and specifications. [ John  May 14, 2017 ]
    present speakers are about 20 years old [ Paul  Apr 18, 2017 ]
    References from other buyers [ Steve  Apr 01, 2017 ]
    very good rating [ shawn  Mar 12, 2017 ]
    Needed speakers and the reviews gave me the confidence to purchase. [ George  Jan 29, 2017 ]
    Fits with the decor and space available for my primary video/music entertainment system. I have used other Polk products and have always been satisfied. [ WILSON L  Jan 26, 2017 ]
    POLK IS THE BEST SPEAKER FOR THE MONEY. [ Joseph  Jan 25, 2017 ]
    The price was first... specifications of speaker was second... Crutchfield had them in stock was third, and I love shopping at Crutchfield. [ T  Dec 23, 2016 ]
    Adding this to my surround system this is the final pieces to my 7.1 surround sound system [ John  Dec 23, 2016 ]
    Because I have the bookshelves version of these speakers and wanted the bigger sound-stage that a floor standing version should provide. [ DEMETRIO  Dec 21, 2016 ]
    I ordered a Denon surround receiver a few years back and love it. I suspect that my low-end surround speakers are not giving me the full benefit of the Denon - so now I'm interested in upgrading my speaker system to match the quality of my receiver. Polk has a good reputation and these seem like a good fit as an upgrade to my current towers - and you can't beat the price. [ Andres  Nov 21, 2016 ]
    Beautiful sound [ Carlos  Nov 10, 2016 ]
    Recommended by Crutchfield [ Michael  Oct 25, 2016 ]
    I liked the size. The sound is very good and a very good price. Slim and easy to place. [ Jose  Jul 26, 2016 ]
    Needed a set of speakers that will pair well with my Polk CS10 center channel speaker. Paul, a Crutchfield advisor, recommended them. Looking forward to better sound and matching speakers. [ Joshua  Jun 02, 2016 ]
    Recommended by a friend and the great price [ GREG  Apr 25, 2016 ]
    I spent a few minutes of research--- These are one of the most popular sellers---people with a whole lot more time and experience loved these speakers ---that is good enough for me! Thanks for making it easy. Shopping on line can be such a time sink! [ lowell  Apr 15, 2016 ]
    Perfect power for my surround system... [ PETE  Feb 17, 2016 ]
    Research and good input from buyers at your site You guys have a good return policy [ Teunys  Jan 07, 2016 ]
    Great deal!!! Hard to pass up this much sound for this price [ MICHAEL  Jan 03, 2016 ]
    Bought these to complete my system. Liked the sound and looks. [ Jack  Jan 02, 2016 ]
    I bought these for a few reasons. First, Polk makes great sounding speakers. Next, these will complete my Polk set up. All my other speakers are Polk except my front mains. Lastly, these seem to be discontinued which means you can get them at a great price so they can clear out old inventory. I was going to get the 300's, but decided to spend a few more bucks and get the 400's. I'm sure it will be money well spent. [ Carl  Jan 02, 2016 ]
    Past experience with Polk [ David  Dec 30, 2015 ]
    Great pricing, great ratings, advisor had good things to say about Polk. [ Jacob  Dec 08, 2015 ]
    Price [ Travis  Nov 02, 2018 ]
    To replace similar Polk speakers purchased many years ago. [ David  Jan 06, 2018 ]
    To complete my home stereo outfit. Gonna use this speaker for my center speaker. 5.1 System [ Thomas  Dec 31, 2017 ]
    I like Polk. [ David  Dec 12, 2017 ]
    I already had TSI 100, TSI 200 and a Polk PSW110 sub and a CS10 center speaker. I wanted a pair of floor standing speakers that matched the other speakers in my setup. THe TSI 500 speakers would have been overkill for my space. The TSI 400s have made a dramatic difference in the low end and particularly when playing movies you get that feeling of being at a theater. Crutchfield had the best price and I received the speakers two days after placing my order. [ Keith  Aug 29, 2017 ]
    Great reviews and price [ Keith  Jul 30, 2017 ]
    Good looking, good price, good reviews. [ D  Jun 01, 2017 ]
    I spoke with Taylor and he advised me I'd be happy with this set plus they were on sale :-) [ JOHN  May 19, 2017 ]
    I own an earlier version of these speakers, and have been very pleased with their sound and their styling. Ordered a pair as a wedding present for my son. [ Phillip  May 18, 2017 ]
    Price is right. Excellent reviews. [ Herman  May 01, 2017 ]
    Good reviews and good price. [ Charles  Apr 24, 2017 ]
    I like Polk speakers and so what if there is a little scratch or two the music is what matters. [ James  Apr 15, 2017 ]
    Online reviews and price. They sound great. Very crisp and clear. [ Glenn  Mar 26, 2017 ]
    I have the monitor 40's just wanted to upgrade to tower speakers for my Onkyo tx8050 receiver. [ VENANCIO  Mar 18, 2017 ]
    It's purty! [ Joseph  Mar 14, 2017 ]
    Good name. Good specs. Nice finish. [ Scott  Mar 12, 2017 ]
    features and reviews [ orlando  Mar 09, 2017 ]
    looks good to me and i like crutchfield [ michael  Mar 06, 2017 ]
    Nice sleek design, reputation and stellar reviews. [ Sean  Feb 26, 2017 ]
    On advice from Mick who text chatted with my this date, 31 Jan 2017 at about 6:45 CST. [ Michael  Feb 01, 2017 ]
    needed new front speakers for my surround sound...and good price,good reviews... [ CURTIS  Dec 26, 2016 ]
    Seemed to be the best value for my budget; I wanted good sound and the alternatives were simply too expensive. [ Shalom  Dec 16, 2016 ]
    I already have a set of TSi polks and love them. [ ANDRES  Dec 01, 2016 ]
    Price. Quality [ Sean  Nov 28, 2016 ]
    will be a nice addition to the other two i have [ Daniel  Nov 25, 2016 ]
    Good reviews, will fit in my room. [ BRUCE  Nov 18, 2016 ]
    They are well recommended. [ Alan  Nov 17, 2016 ]
    Seemed like a good price for the features and a I liked the Cherry finish. Looking forward to how they sound [ Michael  Nov 15, 2016 ]
    If you're looking to buy speakers, Polk Audio is always the way to go. It's what they do. [ A  Oct 30, 2016 ]
    Polk Audio has quality products at affordable prices [ James  Oct 17, 2016 ]
    Love the cherry color and crystal clear sound, they provide such a huge improvement over other towers I've tried. I love my new towers from Polk audio!!! [ Marlon  Jul 31, 2016 ]
    Positive reviews and the Polk name [ Mark  Jun 25, 2016 ]

    9 questions already asked

    I am fairly certain that they will work fine. [ Bob  Jun 19, 2018 ]
    Hello. Yes they will. These are 8 ohm speakers and they handle up to 150 rms. I have them hooked to an old Onkyo stereo receiver myself. Now, if you are using them for movies and not just as your main stereo speakers, then you will need the matching center channel and a pair of the bookshelf version of these for your surround. But the center channel is the really important one so you have correct timbre matching. [ DEMETRIO  Jun 18, 2018 ]
    Yes it will work [ JASON  Jun 18, 2018 ]
    They should work with no issues, whether you use them as stereo speakers or as part of a surround sound system. Impedance and wattage are well within operating range. [ CARLOS  Jun 18, 2018 ]
    James, Sorry for the delay in getting back to you. I don't know if I can answer your question. I am currently using these towers for the front right and left of a home theater. I also have 2 amplified subs, a center channel speaker and mid range and back ground set in my ceiling. System all together with a 7 channel receiver brings even the most boring movies to life. With the right installation, I think these speakers would work Great for you. [ Larry  Jun 25, 2018 ]
    Bass sounds great. [ Randall  Jun 24, 2018 ]
    I also use them primarily for vinyl and they do need a sub unless the room is really small and have great acoustics. I have them paired to a Pioneer sub and no complaints, although I wish the sound on them was a bit brighter. [ DEMETRIO  Jun 18, 2018 ]
    I use them with a sub so I don't have a lot of listening time of the pair alone, but my sense is that they are a bit weak on bass. I would recommend a sub with these, or instead look at models with larger woofers. [ John  Jun 18, 2018 ]
    I have them connected with a separate subwoofer - so it's hard to say how much bass response thay have independent of the sub. I listen to lots of acoustic music on them and they sound great with a fat and full mid range which is their primary function for me. Hope that helps! [ Andres  Jun 18, 2018 ]
    Would think you would be better off with a small pair of bookshelfs... but using only one of the speakers would be clear enough for a small room [ MICHAEL  Jul 24, 2017 ]
    In a small home with small rooms, I suppose you could. You will have channel separation issues and running speaker wire will be interesting. Might be better to have a small set in each room that you can switch between or run both at the same time. [ Carl  Jul 23, 2017 ]
    very loud and clear, great speakers [ Donald  Jul 23, 2017 ]
    They are amazing speakers for the price. I would think yes. [ JEFF  Jul 22, 2017 ]
    These speakers make for better viewing when part of a 5.1 system than they do as a music listening system on 2.0. FYI. I used a Polk subwoofer and am still not happy with the music, bass is lacking. [ MICHAEL  Jul 24, 2017 ]
    I agree. I was disappointed in the amount of bass coming out of these. I had intended them to replace a pair of large JVC floor speakers. But they just didn't deliver the bass. So I put them as my rear speakers and reinstalled the 15" JVCs. I also have a Polk sub. My system definitely sounds better with these instead the bookshelf speakers I had been using for the rear. [ Carl  Jul 23, 2017 ]
    In my humble opinion, yes it gives more presence. Depends more on music preferences and intended use. [ Carlos  Nov 29, 2016 ]
    I am very happy with my tsi400's. They are durable, built to last. I shipped them overseas twice and they are performing like I just bought them. I have been using them with a Polk audio sub woofer when I watch movies and I have no complaints. My Denon avr400 providez 185watts per channel that make all the difference. As far as pairing them up with the tsi500's I would assume if the range of frequencies are almost the same then ok. I believe the cross over for both models are set to 2500 hz. Not sure if this will help you. If it were me I would pair speakers of the exact same make and model. [ Sean  Feb 27, 2016 ]
    Not sure how they would react together, I can say I have a set of tsi 400's paired with a Polk 10" sub, it shakes the walls, clear and crisp [ Richard  Feb 26, 2016 ]
    Well Randy, if the rating of your amp is 80 watts RMS it will be fine, but if it's 80 watts peak and you want to crank it up so the neighbors can hear your choice music it might not sound so good. You didn't say what amp you had. Does it have a low THD? The speakers you chose are fantastic but the audio that comes out is the audio you put in. In short if you have an amp with great specs buy the speakers, if the amp is not so great, buy the amp first. I hope this answer will help you in making your decision. Best of luck Randy. [ Rey  Dec 15, 2015 ]
    I'm driving these with an audiolab 8000a (60w) and they sound just fine... pretty good, actually... your 80w should be plenty... [ GARY  Dec 15, 2015 ]
    YEs, it is enough [ ALLEN  Dec 15, 2015 ]
    I've got a 500 watt Technics recvr thats 20 yrs old and can't turn it up more than 1/3 the way and they sound great. If yours is a 5/1 and you have good rear and cntr speakers 80 per should be plenty of power. My room is 25x25. Hope this helps [ Phil  Dec 14, 2015 ]
    I have these speakers as my front right/left and they are excellent. You will need a sonically matched center channel speaker to bring out the clear voices you demand. I have a Polk CS20 myself that I am very pleased with. I'm not sure if they are still available so get the one in the same Polk series that will match the front speakers. The Crutchfield folks will help you with that choice. Hope this helps. [ Roger  Oct 13, 2015 ]
    I am very pleased with these speakers, voices/conversations are much more clear/distinct than my old set up of the Bose cube speakers. As for getting older this is same reason I purchased these speakers, wife was getting on me about cranking the volume to hear the dialog. Now I no longer need to make my wife's ears bleed. [ TERRY L  Oct 07, 2015 ]
    I use the TSi400s in my living room as front speakers, and I love them. They offer way more sound than my relatively small room requires, but they are diverse enough to behave accordingly throwing her the entire volume range. They're great for everyday television, HD movies, and music as soft or loud as you wish to push them. I have always been impressed with the clarity, but that's such a unique opinion to each person's ear, I hate to say that you'll think so too. I would definitely recommend them based on my experience with them for close to two years now. [ Thomas  Oct 07, 2015 ]
    I am very pleased with the speakers I can't remember the exact cost that I paid but I would definitely recommend these in the advice that I received at the time from Crutchfield [ JASON  Feb 16, 2014 ]
    Not familiar with Klipsch. The speakers provide high quality sound at a reasonable price per pair. Design is first rate.I use Polk SB 50 for surround sound. Highly recommend if space is an issue. Sub-woofer a must [ WILLIAM  Feb 12, 2014 ]
    Sorry, don't remember the price and can't look it up right now. Can't compare either because I don't have the Klipsch to compare them too. We are very happy with them though. They are in large basement room for playing pool and listening to old vinyl. Working out great. [ DAVE  Feb 11, 2014 ]
    Hi, if you are looking for just a home theater the tsi400 can do the job but if you are looking for a clarity, details, and a really good sound in movies and music you can try the klipsch. I just bought a used pair of reference 600 from a friend and now I'm thinking in buy another pair from Crutchfield. And I paid for the polks almost $600. If you have another question just let me know. [ rmlora  Feb 11, 2014 ]
    The Klipsch are also amazing speakers. I have been a long time fan of Polk. My car speakers as well as these TSi 400s down in my den for the 7.1 I have. Once I heard these at Best Buy, I ordered them from Crutchfield that day. The research Crutch offers is the best around.....but you do need to hear or see a product in person before buying right? These are the best bang for the money. I think I paid 500 for the pair? Maybe 225 a piece. I loved them so much I purchased the CS 20 to replace my center channel. The speakers have a rich sound. Lows are great while the high tones are superb. I have a 5 year old Sony amp pushing them. Pull the trigger and buy them. I researched them for 2 months before buying. [ DAVE  Feb 11, 2014 ]
    The MC Series Polk speakers are timbre matched to their TSi series freestanding speakers. We have the MC80 & MC60 in in-ceiling and the MC85 in in-wall. [ Larry  Dec 20, 2015 ]  Staff

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