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Parts Express TriTrix MTM TL Speaker Components And Cabinet Kit Pair

Brand:|Part # 300-702
The TriTrix MTM TL speaker design is hailed by DIYers as one of the best reasons to build your own! Never before has a speaker kit made such an impact in the DIY speaker building community.
In Stock
List Price$449.99
You Save38%
Your Price
Part # 300-702
  • Low price - proven performer
  • Assembly made easy via comprehensive manual
  • How to videos explain it all from start to finish
  • Kit includes everything you need to construct two complete speakers

Product Details

Parts Express TriTrix MTM TL Speaker Components And Cabinet Kit Pair

The TriTrix MTM Transmission Line Speaker Kit includes all the components you need to build a pair of the renowned TriTrix MTM speakers. Nearly $450 worth of components and cabinets have been discounted over 40% to save you money and get you started in speaker buildling. The knock-down TriTrix MTM transmission line (TL) cabinets save you time and money.

This kit's precision CNC cuts offer accuracy comparable to the craftsmanship of a master woodworker, maybe even better! 3/4" MDF construction ensures maximally damped enclosures to prevent annoying resonances that color the sound. Cabinets ship unassembled, but are simple, quick, and easy to put together. The TriTrix knock-down cabinet pair and the TriTrix component kit have been tremendously popular with Parts Express customers like you. Buy these two great kits bundled together and save!

Check out the review from Make Magazine: TriTrix

Package Includes:


Qty Part Number Description
2 275-075 Dayton Audio DC28FS-8 shielded silk some tweeters
4 295-302 Dayton Audio DC130BS-4 classic shielded woofers
2 266-836 2.50mH 18 AWG air core inductors
2 266-818 0.60mH 18 AWG air core inductors
2 027-428 Dayton Audio DMPC-10 10uF-250V polypropylene caps
2 027-436 Dayton Audio DMPC-20 20uF-250V polypropylene caps
2 004-2.4 Dayton Audio DNR-2.4 ohm 10W resistors
2 091-1154 Gold binding post pairs
2 260-317 Acousta-Stuf Polyfill 1 lb. bags


Note: Crossover parts and speaker terminals may be substituted for comparable parts at any time. 

User Submitted Images


TriTrix user image 001 Harold H.
from Lynchburg,VA
TriTrix user image 002 Anonymous Customer
Dave T. TriTrix Dave T.
from Madison, NJ
Granite TriTrix David E. 
from Salt Lake, UT

Parts Express TriTrix MTM TL Speaker Components And Cabinet Kit Pair includes the following items:
Qty Part # Item
1300-700TriTrix MTM TL Components Only Speaker Kit Pair
1300-701Parts Express TriTrix MTM TL Knock-Down CNC Speaker Cabinet Pair
No substitutions allowed. The above may include some items that are not available for purchase separately.

Product Specifications
  • Cabinet OptionsUnfinished/Unassembled
  • Speaker TypeFloor Standing
  • Woofer Diameter5-1/4"
  • Input Rating8 ohm
  • Configuration2-way (MTM)
  • ColorUnfinished
  • Cabinet Dimensions (H x W x D)36" x 7-1/2" x 14-1/4"
Parts Express TriTrix MTM TL Speaker Components And Cabinet Kit Pair
  • BrandParts Express
  • Part Number300-702
  • UPC844632084331
  • Product CategorySpeaker Kits
  • Unit of MeasureEA
  • Product Rating
    (63 Reviews)
  • Weight83.1 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

View similar products to the Parts Express TriTrix MTM TL Speaker Components And Cabinet Kit Pair
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Parts Express TriTrix MTM TL Speaker Components And Cabinet Kit Pair
Parts Express TriTrix MTM TL Speaker Components And Cabinet Kit Pair is rated 4.6984 out of 5 by 63.
Rated 5 out of 5 by from Excellent kit and fun project with great soundThis was a fun kit to build and in the end sounds great. I built a few homemade speakers in the past, but nothing as nice as these. What helped me was reading all the other reviews and looking at the photos to get ideas. The Parts Express videos were great for the basics, but the other suggestions helped a lot.For the crossover build I used the video, wiring diagram, and the photo shown of another builders results. I had some scrap pegboard of 5 x 7 inches that worked well. I chose to solder on the bottom of the board for a neat result and used a terminal strip to make installing and servicing it easy. I did test both of them with loose drivers before I installed everything just to be sure I got it right.When I installed the crossovers in the cabinets I picked the mounting location on the back. This allowed me to be able to remove for repair or upgrade if ever needed. I installed them on nylon standoffs and with sufficient wire length to pull them out while still being connected. Also, i used terminal lugs to avoid the problems some had with melting connectors and for repair later if needed.The red oak veneers were a challenge for me since I had never use this material. I watched a bunch of YouTube videos first. A tip that was critical was using small dowels on top of the glue to aid in alignment. Once the contact cement touches it is permanent. It took some patience to properly trim the edges and cut out the driver openings. Also, the cabinets were somewhat top heavy and I had concern about pets jumping on top. I added the oak feet to provide some stability and these worked fine. I used inserts and heavy screws so the feet could be removed in order to transport them. They also have some rubber feet screwed to the bottoms.I lightly stained the cabinets and put on four coats of polyurethane to make the finish very durable and glossy. I also installed magnetic buttons to attach the grills I built. I used 1/4 round oak trim to make the grill frames. I had to glue and brad nail the miters in each corner, but they were very strong when completed. Again, magnetic buttons were installed in the frames and grill cloth was applied with hot glue and a few staples in the corners.The resulting system using some older stereo components I had lying around was a gift for my son. It sounded so good that I wanted to keep it. I liked that the kit can be built and finished how you want it as shown by the many examples in the reviews. If you are a little handy with tools and have some patience you can make a great looking and sounding pair of speakers.
Date published: 2015-11-01
Rated 5 out of 5 by from Better than expected..Just finished these speakers, tested them last night and they sound great. Very accurate sound stage, It was like hearing many of the recordings for the fist time. Highly recommended.
Date published: 2015-04-08
Rated 5 out of 5 by from Best bang for the buckI was searching for speaker to compliment my TV setup and to free up my Atlas in order to run the Atlas over tube amps only. The MTM TL are not efficient enough to run lower powered tube amps.Since I was always interested in different base setups a transmission line was a welcome experiment and I'm not diappointed. Easy to build and wire. Only issue is the crossover which does not seem to have a real place in the speaker cabinet it self. Putting it inside would mean to never get to it in order to recap it in 10 years or so.Since the inside of the cabinet is pretty limited for the crossover I build footings to acommodate them. This also lifts the tweeter a little bit more to ear level which helps a lot with the somehow dull high frequencies.Not sure, some people are complaining about the missing bass SPL, for me, they have a little bit too much compared to the mids and highs. They need a lot of distance to the back wall or the one-note bass becomes too boomy. I experimented with stuffing and I think I need to stuff more in order to control the bass lines better when listening to music.For my main application as TV speakers they are perfect since voice definition is very good but for movies also here the boomy bass needs some work.In general I would consider the high frequency definition a little weak but maybe I'm spoiled by my Atlas which are now only be used for music and have an advantage here, so that might be unfair.In general, pretty darn good speaker, easy build and when you know what to do with the crossover a very nice setup. Can't beat the price for what you get!!!
Date published: 2015-04-05
Rated 5 out of 5 by from A MUST for First-Time BuildersI bought this kit several years ago as my first speaker build. It is a simple, elegant design, that is easy to follow; and a great introduction to the speaker building world. I can't recommend enough building a pair like this before designing your own.I was completely blown away with the sound for how much they cost. In the end I have some EQ in the mid section, but I am satisfied with the sound overall. And don't forget the extended bass you get with a well-designed transmission line!The only thing that almost brought it down to 4 stars was that 2 of the internal corners (the 45 degree pieces for the TL) were ~1/16" wider than they should have been. The support staff had a hard time believing me since the pieces are CNCed, but they were definitely a bit out of tolerance, enough to make the box not seal properly. I ended up just slowly shaving them down until they fit properly.Since then, I have designed a few speakers from the ground up. I have been a live sound professional for several years; but I must admit that without building (and understanding) this kit first, I would have been in over my head.And no, speakers do not just have to be painted black.
Date published: 2015-02-28
Rated 5 out of 5 by from Nice sound! Not too easy for a newby though.First off....I am a complete amateur when it comes to speakers. This was my first time to do a project like this with no wiring or wood working experience. My can't have too many wood clamps....I had four and needed more. The instructions are poor but the online how to videos are a great help. The finished product....I'm happy and the sound is great for the money! I almost want to buy another set just to do a better job the second time around.
Date published: 2015-02-09
Rated 1 out of 5 by from $250 in the trash.see photo, after I glued on one side, I realized I had not installed the "T-nuts"...
Date published: 2015-01-16
  • 2016-02-10T06:32CST
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Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email  for a prompt reply.
Parts Express TriTrix MTM TL Speaker Components And Cabinet Kit Pair

Hello, I wonder if these speakers would sound good against a wall in a basement that's unfinished with kraft paper-backed insulation (not drywall).  In other words, do they need to be positioned in front of a wall with a hard surface? Thanks very much. 

Asked by: fromnowon
Those do not need to be positioned in front of a hard surface. In some rooms it is actually better to have them out away from the wall.
Answered by: Chrisf
Date published: 2016-02-04

Should I set my receiver to 8 or 4 ohms for my Tri-Trix speakers? On the (Components Only Speaker Kit Pair) page it says, "input rating = 4ohm". On the (Components And Cabinet Kit Pair) page it says, "input rating = 8ohm".

Asked by: APM81
These are 8 ohm speakers, so setting it to 8 ohms will be fine.
Answered by: MattP
Date published: 2015-10-26

Wouldn't the poly fill interfere with the function of the transmission line? Where is the best place to load it?

Asked by: Gnagus
The poly fill is a function of the line. It is stuffed evenly from the back of the drivers to the opening of the terminus. You can play with different amounts to achieve the sound you like.
Answered by: MattP
Date published: 2015-09-30

I am just completing my tritrix speakers - but I have no idea on what I will do for a center channel.  I would prefer to build this to....please advise on any input as to a good center speaker option.   Thank you.

Asked by: Scottyt
We don't have a kit available, but you can build a matching center channel for these with essentially half of the parts. You can see the plans at the website below.
Answered by: MattP
Date published: 2015-09-09

Any specs about frequency response and SPL?

Asked by: lucpla
Average sensitivity for this system will be about 87 dB. Frequency response is ~50-20kHz.
Answered by: MattP
Date published: 2015-11-04

Hi, do you have any sensitivity figures for the speakers?

Asked by: Royal
The sensitivity of the speakers are about 90 dB.
Answered by: MattW
Date published: 2015-04-20
  • 2016-02-10T07:21CST
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