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HT-10 with Flat Pack Cabinet

HT-8 with Flat Pack Cabinet

Quick Overview

Light weight and high output.


* Includes flat pack cabinet *

$204.24

Availability: Out of stock

Details

Minimum order is TWO.  These are usually packaged and sold in pairs.  If you need an odd number of kits (3, 5, 7, etc) they have to be packaged differently and might increase the shipping cost of the extra kit.  If it does, I will contact you.  This kit includes the flat pack cabinet but they are now being packaged and shipped differently.  They are priced at cost ($25 each), so because of this they can't be shipped "for free". During check out the site will calculate shipping costs for just the flat packs, the other parts ship for free.

Please keep in mind that these kits do take quite a bit of time to package.  It would be good to allow 2 weeks for packaging and shipping.  

From the Designer: I used the 8" Celestion woofer in one of my first waveguide speaker designs and knew it would work well in the HT-8 and blends great with the Celestion compression driver.  The SEOS waveguides excellent directivity control and coverage results in a wide sound-stage and great imaging. Crossovers are optimized for a smooth frequency response and seamless transition between the HF driver and woofer for faithful audio reproduction.     

 

Product Notes: 

With a depth of only 7.25" they will easily fit behind acoustically transparent screens if needed.  Perfect for Left/Center/Right speaker use in medium to large sized rooms, or as a surround option in even the largest home theaters.

 

Product Highlights:

  • Very detailed sound with superb dynamics.
  • Low distortion from the woofer and compression driver.
  • Easy to power with a true 94db 2.83v/meter sensitivity.
  • Quality name brand components.
  • SEOS-10 waveguide gives you a larger 'sweet spot'.
  • Will handle more than 250 watts and play at 115db.
  • Designed to work best for home theater when paired with a subwoofer system.

 

Cabinet Highlights:

  • Made from CARB 2 Compliant MDF.
  • 1/2" thick material to keep weight low without loss of strength.
  • 3/4" thick highly refined MDF front baffle.
  • Cut with a CNC router for accuracy and easier assembly.
  • Rabbet joints for braces, top/bottom, and side panels to increase joint holding power.
  • Bracing adds to panel stiffness and cuts down on cabinet vibrations.

 

Minimum order is 2 speakers: If you ordered one in the past and need one for a center, please contact me. Kits are sold as full kits, sorry no substitutions or subtractions. Don't forget binding posts, terminal cups, or speaker spikes if you need them because they can be shipped for free with any kit or flat pack purchase.

Shipping Note: Most speaker kits currently ship for free.  We try to get your order packaged and shipped in 5-8 days depending on how many orders have come in.  Please read the 'Frequently Asked Questions' section for more information.

International orders:  Paypal charges an extra 2% fee on international orders.  If you are buying these from outside the US I will contact you about that extra fee.

  1. Outstanding product review by Dustin967 on 3/31/2024
    Design
    Performance
    Value

    I built 4 HT-8s for ATMOS use in my theater and I’m incredibly impressed with them.
    First the kits are extremely well packaged and very professional. They go together perfectly and really I can’t think of any way to do any of it better.
    I ordered the crossover boards and they were also excellent t quality.
    The sound out of these is very impressive for their small size and the value is amazing IMO. They’re clear, loud, and image well. Couldn’t ask for more.

  2. Replacement Surrounds for Klipsch RP-150Ms review by Xb1032 on 7/5/2023
    Design
    Performance
    Value

    After replacing my Klipsch RP-280Fs and RP-450C LCR with DIYSG-1099s, I decided to upgrade my RP-150M surrounds with HT-8s. I planned on getting HT6s, but since they weren't available and the HT8s were only 1/2" deeper I went with 8s. Anyone using Klipsch speakers like the RP series, have no fear. The 1099s and HT8s are every bit as detailed and crisp on the highs as Klipsch without being harsh on the ears. These sound better the louder you play them whereas my Klipsch RPs would get harsh at louder levels. I have not done an A/B comparison with my 1099s, but my gut feeling is the HT8s could serve well as an LCR.

    The HT8s come as a flat pack making them easy to assemble. Unlike some, I dislike soldering. However, there's not many components to the HT8s and the optional circuit boards simplifies the crossover build. Many on Avsforum rave about the DIYSG speakers and I avoided making the switch until this year. Looking back, I should have made the jump years ago before prices on electronics went up. Mine are setup in a basement home theater with a dark decor, so I rolled on Exohyde for a durable finish that works well in my theater.

    If you are on the fence, I recommend making the jump now. These are an incredible value. The HT8s get an A+ in my book. Great sound, big sound for the size and are very clear and crisp.

  3. Easy to build, priced right, sounds awesome review by QDC on 5/18/2023
    Design
    Performance
    Value

    Used the HT-8 as surrounds in my theater and they are awesome. Cabinet is shallow, sound is clear and has punch and is easy to integrate into the room. Pair with HTM-12 as my LCR and Volt 8 as Atmos. If you want compression drivers, you can't go wrong with these.

  4. Ever heard the saying dynamite comes in small boxes.... review by Orange DIYer on 3/22/2023
    Design
    Performance
    Value

    These speakers are simply amazing. For me they serve as surround duty with three HTM-12s as my LCR. They came packaged superbly, as always. They are just a perfect pairing. Sure I could have gone larger or more expensive, but these are just incredible value for money, and by that I don't mean cheap. They are well designed and just work. I plan on hiding them in the walls by building columns around them. I chose them for the relative small size making my pillar build less painful and less large physically.

    If you get these in stock, buy them, you will not regret it.

  5. Amazing speakers review by Taylor on 10/1/2022
    Design
    Performance
    Value

    Have had these as surrounds and backs with HTM-12s for fronts and these could have easily been my LCR. These speakers blend perfectly and are everything you could want from a speaker this size. With the wide horn they easily cover every seat and there isn't a bad seat in the theater. These are only being driven by the receiver and get louder than I can handle. If I had the ceiling space I would also purchase them for Atmos as in a perfect setup would want the same speakers all the way around.

    Assembly was quick and easy and everything came together beautifully.

    I have never had a single issue with them and never had any desire to replace or upgrade. I have had thoughts to buy an extra pair so I can have them on hand when I upgrade receiver to include wides as I wouldn't want to have to substitute in some other lower quality speaker.

  6. Endgame for my bed layer already? review by EJ on 8/14/2022
    Design
    Performance
    Value

    If you see these speakers/ kits in stock...stop reading and BUY RIGHT AWAY. Otherwise, read on!

    To get to the point, I love these speakers. I never had a real appreciation for good clarity or dynamics until I ordered, assembled, and setup five of these HT-8s to serve as my bed layer speakers. Many people talk about hearing things they haven't heard before when getting new speakers...maybe I am hearing new things too? What I can say is that I feel more immersed than ever due to the audio quality these speakers provide.

    I have a relatively small, 13' x 13' x 7.75' home theater and the HT-8s are basically overkill. I remember going back and forth with Erich on HT-8s and HT-12s and very glad I listened to his advice. The HT-8s could easily cover a room larger than mine. That said - and you should know - I find myself turning these speakers up slightly loader than my old speakers and somehow having no listening fatigue (especially compared to before). From what I understand, speaker distortion helps us detect loudness, these speakers are so clear that you'll play them louder.

    I bought the flat pack kits. I had never done any sort of wood working, soldering, or cabinet finishing. I ran into ZERO issues during assembly...was able to learn everything as I went. Erich is VERY responsive and always willing to to help. This gave me the confidence to finish this project quickly and successfully. Really appreciate what Erich and team have going on here at DIYSG. Have already bought and built sub enclosures since building the HT-8s...moving on to atmos next!

    If you made it this far, might as well refresh the site to see if these speakers are in stock! Happy hunting!

  7. Great speakers! review by JLab on 7/8/2022
    Design
    Performance
    Value

    I had some "analysis paralysis" before buying these speakers, like many others. I didn't know if they'd be good enough or loud enough compared to HT-10s or 12s, 1099s, HTM series, the list goes on.

    When these came in stock after patiently waiting for ANY kit to be available I finally just ordered. I couldn't be happier! I sit about 20 feet from my TV and use these in a L/R 2.2 setup for my living room. These 2 speakers get insanely loud and clear on AVR power (old Denon X4000) and I enjoy them as all purpose speakers for movies, TV, and music.

    I do not feel the need to upgrade to another speaker and I don't feel like my setup is lacking in any way. Great speakers!

    As for assembly, these were the first crossovers I ever assembled and was pretty nervous at first. I am a decent wood workers so the kits weren't a problem, but not very good with soldering. The instructions and video helped out a lot and I got them assembled pretty quickly. It really is pretty easy!

  8. Excellent surround speakers, would be great LCR as well. review by TJ on 9/1/2021
    Design
    Performance
    Value

    Bought some HT-8 kits for surrounds to pair with my 1099 LCR. The HT-8s blew me away. Excellent clarity and dynamic range. I could have easily used these as my LCR and still been happy. It is amazing how good these speakers sound given their cost and size. Highly recommended.

  9. WOW! - Unbelievable Performance and Value review by Rodney on 3/7/2021
    Design
    Performance
    Value

    This was my first attempt at a dedicated home theater. After much research, I decided that DIYSoundgroup would be my best option for speakers. Covid-19 greatly affected component availability, but my perseverance/flexibility eventually paid off. My 5.1.2 theater consists of HT-8's for LCR (mounted in-wall behind an AT screen), ported Volt-8's for surrounds and in-ceiling sealed Volt-10's for Atmos. Subwoofer duties are being covered by a Eminence Lab15 mounted in a Kuda cabinet.

    I originally wanted HT-10's for LCR and Volt-10's for surrounds and Atmos. I thought I NEEDED them to be satisfied! Boy was I wrong! We Demo'd a few movie clips in the new theater upon completion. They consisted of Star Trek, Black Panther, Avengers Endgame, Hunger Games and Legend of Tarzan. UNBELIEVABLE!! My face hurt from grinning so much.
    My wife considered this buildout to be a waste of time. "Why don't we just go to ________ and buy speakers, like normal people?" she would say repeatedly throughout this process. After the first few Demos, her response was, "I now understand why you insisted that we buy these DIY speakers. This is AMAZING!" We've got a video collection that consists of 700+ DVD/BluRays. Which movies will we re-watch now that we realize that we've missed so much of these movies in the past? The detail is amazing and the dynamics are downright scary! It's all better than I could have imagined.

    Eric was great to work with and I'll definitely be buying from DIYSoundgroup in the future.

  10. Amazing clarity and power handling review by Joel on 2/4/2021
    Design
    Performance
    Value

    I built 4 of these to use as surrounds in my 7.1 channel living room home theater. The build was pretty straightforward and fun with the flat packs and crossover kits. I bought them over the Volt-6's on recommendation from Erich. The Volts would've been easier to mount to angle downward. I used a diy french cleat system that points them down about 20 degrees with the tweeters on the bottom. Used denim insulation and painted with Duratex. I'm driving them with an Onkyo TX-SR805 and I can turn them up to painful levels with no distortion (unlike my Paradigm front speakers).

    I was worried that the compression drivers would sound like the awful harsh Klipsch horns I'd heard in the past, and I love(d) my Paradigm soft dome tweeters. First time I listened to these all my worries disappeared. These sound so natural that I notice details of sound effects in movies and video games that I hadn't noticed before with my old Polk satellite speakers. So realistic. Amazing. They're a bit mid-rangy for music and I have to turn them down about 3 db or they overpower my fronts. I can't wait to replace my LCR with diysg speakers!

  11. Perfect Surround Speakers review by rcohen on 1/3/2021
    Design
    Performance
    Value

    I got these as surround speakers and they do everything right. They can play loud and clean, without harshness. Consistent off-axis response. The spectacular imaging really caught me off guard. These were my first DIY speaker. The kits are very well thought out, and Erich is very helpful. A huge upgrade from my prior surrounds with dome tweeters.

  12. An Excellent Value review by Chris on 4/14/2020
    Design
    Performance
    Value

    These speakers sound incredible. These speakers definitely need to be paired with a sub(s) but once properly set up they are very detailed, have an expansive soundstage covers my whole seating area, and--of course--plenty of headroom even from my entry-level AVR. I can't imagine how the "better" DIYSG speakers sound, but given how well these perform I see no reason to upgrade (famous last words right?).

  13. Astounding! review by Brandon on 1/31/2020
    Design
    Performance
    Value

    I bought these to replace a pair of Pioneer SP-BS22-LR bookshelves that were on surround duty in a big 7000 ft^3 room. I knew there would be no comparison and there wasnt. These blew the Pioneers away in terms of clarity and volume and their off axis response. I powered them with a dedicated 80w D class amp.

    But what blew me away was how good they were as mains. I have Bowers and Wilkins 683 S2 as mains powered by a 120w Denon that only powered the mains. Without a sub the HT8s can't compete because it's not their playground but when paired with a sub at the same 80hz crossover the HT8s were trading punches with towers. That's crazy for the price of these bookshelves. The B&W towers sounded a bit better to me in the mid range in my MLP but what blew me away was that the HTs were better in every other seat. My partner isn't really isn't into "getting the best sound" but I kid you not in an A/B test she preferred the HTs over the towers. I don't know a better review than that. These are amazing.

  14. Loud and clear review by Rob on 1/25/2020
    Design
    Performance
    Value

    We are using these in a 2.1 setup for our living room (22'x28'). They output clean, clear, and loud enough for most sane people in this amount of space. Thanks for offering up this kit.

  15. Gets Better Every Day review by Caleb on 1/18/2020
    Design
    Performance
    Value

    I've been using them for about 3 Months now as LCR's and was waiting to give my review. I heard about the quality and price for performance of these things and they lived up to every measure. These were the first home theater speakers I've built, or owned. I was nervous at first because I didn't know what to expect and I have not had a lot of experience with other home theater speakers, although I have dived into car audio in the past. Over time I've listened to more and more set ups I realize how remarkable these are. Powered by just my AVR the clarity and quality is unmatched by any others that I've heard since being able to compare. They get loud while staying clear making movies games and music sound phenomenal. The building process was a blast and I believe I've been bit by the bug because I can't wait to build more. If you're new to speaker building and are unsure of what to get, I assure you these are an excellent choice and you will not be disappointed.

  16. Punching far above their weight - best value, hands down review by Mark on 9/21/2019
    Design
    Performance
    Value

    Can't agree with the other reviews enough. These are an incredible price/performance - really something special. I also went back and forth for a long time on whether I should go with the larger 10 or 12", or the HTM series, etc. As soon as I got them built and set up I had no more concerns. They fill the room effortlessly with loads of detail and dynamics. Dialogue never sounded so clear.

    Going from KEF Q series speakers to these was a clear upgrade me and my room. The waveguide does an excellent job at even dispersion across the seating area all while minimizing the room interactions from side wall and ceiling. I also use them quite a bit for music and they have all the detail I had with KEFs but a lot more dynamics. Less low end than most retail speakers, but since I crossover to subs the extension isn't needed. I recommend aggressive toe in such that the right speaker is aimed at the far left listening position and the left speaker is aimed at the far right position.

    If you are on the fence trying to upsell yourself...forget all that. Buy a set of these and enjoy. Even if somehow you don't love them, drop them back to surround duty - easy! These are the perfect speakers to see if you like the SEOS waveguide flavor.

    The performance of these at this price point has me 100% sold on the diysg route for main speakers. Both Matt and Erich were very helpful answering any questions regarding the design / build (thanks!).

  17. Amazing Speakers review by BL on 5/12/2019
    Design
    Performance
    Value

    Upon first hearing these I must say I was shocked on how loud yet clear these speakers got. Played them in a 18’x21’ living room with a cathedral style ceiling and two 7 1/2’x5’ openings, one into a dining area the other into a stairwell. Wow just wow. The way that these speakers flooded the room with sound was amazing, and they did so effortlessly. Can’t recommend these speakers enough.

    P.S. The flat packs and pre assembled crossovers make these things a dream to build.

  18. Thought I made a mistake review by Badger on 4/26/2019
    Design
    Performance
    Value

    While building these, I thought I made the mistake of not buying the more expensive Htm or bigger models. Waiting for the glue to dry was excruciating. I kept thinking, "Should I have . . .", fill in the blank with a hundred different scenarios. I finally hooked them up and zero regrets. These sound huge. Smooth, detailed, and loud. Gentlemen, thank you for designing these. Also, the x-over boards and flat packs make these super simple to build.

  19. May be all the speaker you ever need review by Brian6751 on 4/14/2019
    Design
    Performance
    Value

    If you are just getting into home theater and have somehow been directed to this product page, listen to me VERY CLOSELY. Buy these kits for all your channels, maybe some volt-6's for atmos, NEVER go back onto the forums, and live happily ever after! There, I just saved you thousands of dollars! You're welcome! But seriously, these are all the speaker 99.99% of us will ever need. They are a cost/performance marvel and they sound great regardless of the price. I have built, heard and owned A LOT of speakers both retail and from DIYSG and these would not be embarrassed by any of them. I'm betting Erich recommended these but you're looking at more expensive models because, "why not", right? Listen to Erich and just buy these and enjoy life!! You'll thank me later!

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Speaker Kit Information

 

  Model:      The HT-8
  Designer:      Matt Grant
  Frequency Response:      70hz - 20khz (+/-3db)
  Power Range:      10 - 250 watts
  Sensitivity:      94db - 2.83v/1m
  Impedance:      8 Ohm
  Tweeter:      Custom Diaphragm CDX1-1445
  Crossover Point:      1550hz
  Woofer:      Celestion TF0818
  Enclosure Type:      Ported
  Dimensions:      12.5" W x 16.75" H x 7.5" D
  Cabinet Material:     Carb 2 Compliant MDF
  Assembled weight:      About 20 pounds

Price Break Down:

1 - Celestion TF0818 woofer: $69.50
1 - CDX1-1445DA with custom HT diaphragm: $59
1 - Denovo SEOS-10 waveguide: $23
1 - Set of crossover parts: $28.51
2 - Ports: $7.96
1 - CNC cut front baffle:  $12
1 - Set of screws and PCB connectors:  $1.50
1- Speaker flat pack:  $25
 
 

Packaging Material: $4.25

Paypal Fee: $5.04

Retail Cost: $235.76

Discount Cost: $204.24

Kit Savings: $31.52

Please read the 'About Us' section for more information on pricing structure and quality parts used.

Specific HT-8 Assembly Notes:

Your enclosure should be built with 1/2" thick material and the included 3/4" thick baffle to the dimensions listed under the specifications tab. Please note that you do not need a double thick front baffle.  You should have one horizontal "window pane" style brace between the waveguide and woofer.  It is recommended that you line the inner panels with 1.5" thick acoustic style foam or you could line the inner panels with 2" denim insulation, but don't block the ports with it. Please be sure to read the general tips below before starting your build. 

 

Recommended Tools and Supplies:

  • Quality wood glue like TiteBond.
  • At least 2 clamps 16" wide or bigger.  
  • Soldering Iron and solder unless there is an optional assembled crossover for your kit.
  • Wire cutters
  • Screwdriver
  • Drill to predrill all screw holes.
  • Sanding block or power sander.
  • About 6' of speaker wire to connect your woofers and tweeter to the crossover board.

 

General Tips:

    Crossover Assembly: 

  • VERY IMPORTANT - Inductors are the parts that look like small rolls of copper wire. Notice that the two ends of wire are silver and have been 'tinned' with solder. Those are the parts of the inductor that you should be soldering to, so don't cut it off to get to the copper colored portion.  Inductors should not be installed directly next to each other on your board.
  • None of the crossover parts have a positive or negative side so it doesn't matter which way they are facing when you assemble your crossover. 16-18 gauge wire is thick enough to use for your crossover or to go from your crossover board to the woofer or tweeter.
  • Your crossover can be assembled on a thin piece of MDF or pegboard if the kit doesn't come with a circuit board.
  • It doesn't matter where you put the crossover inside your speaker.  You could mount it on the outside if you wanted to.  
  • Normally you wire red wires to positive and black wires to negative.  If (and only if) your crossover schemtaic has a note saying 'Inverted Polarity', that means you need to connect the negative from the crossover to the positive on the tweeter and positive from the crossover to the negative on the tweeter.  This is only done on some tweeters, not woofers.
  • Click Here for a good assembly video by Matt Grant.

     

     Screws and Gaskets:

  • Predrill all screw holes with a bit that's slightly smaller than your screws to prevent the wood from splitting.  Most screws are #8 panhead and you can use a 7/64" or 1/8" drill bit.  Overnight Sensations use a #6 panhead so you can use a 3/32" bit.
  • VERY IMPORTANT:  Protect your woofer or tweeter when installing screws because you don't want the screwdriver to slip and puncture one of your components....that will ruin your day!  Consider putting your free hand next to the screw to cover up the edge of the woofer or tweeter.
  • If your kit comes with gasket tape, it should be applied to the back of the waveguide. Peel the paper off the back to expose the sticky side and slowly work it around the perimeter on the back side of the part.  Some woofers will need gasket tape as well.

   

     Stuffing or Lining the Speaker Cabinet:

  • If your speaker or subwoofer is a sealed cabinet, most designers recommend that you lightly fill the inside with polyfill (pillow stuffing).  If you don't have polyfill, then you can line the walls with 1" - 1.5" thick light weight open cell foam (like acoustic foam) or fiberglass insulation.  You can also use 2-3" recyled denim insulation that can be bought at Home Depot.
  • It's okay to cover up your crossover with the polyfill, insulation, or foam.
  • If you're using a ported enclosure you should lightly fill the cabinet with polyfill and be sure not to block the ports.  If you do not have polyfill then line the walls with 1" - 1.5" thick open cell foam (like acoustic foam), 2" - 3" of denim insulation, or 2" - 3" thick poly batting.
  • Some of the speaker designers like to lines the walls of their ported enclosures with a 1" - 1.5" acoustic foam, and then lightly fill the remainder of the cabinet with polyfill.  If this is a required method, it will be listed at the top of the page under 'Assembly Notes'.

 

Links to Build Threads for this Speaker:

Frequently Asked Questions:

* Do I need to cut the port to a certain length on the ported version?  Answer:  Yes, total length should be 2".

* Does this kit come with a circuit board to assemble the crossover on?  Answer:  No, a lot of people assemble them on a small thin piece of wood or select the circuit board option.

* Do I need to use a subwoofer with these?  Answer:  Yes, these were designed to be used with a subwoofer.

* Where should I put the assembled crossover?  Answer:  The crossover can go anywhere inside the cabinet as long as you don't block the ports on the ported version.

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