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Welcome to DIY Sound Group
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April 04, 2025: This is the last time these kits will be sold on this site before I switch over to the new website that's finally done. I'm putting them back in stock here because all of the parts and components are currently listed on this site.
This kit takes a decent amount of time to package so please understand it will take longer than usual for me to get them shipped out. I quality check and test all compression drivers before packaging orders. Orders are packaged differently depending on how many kits you order, and if you get flat packs and/or horn brackets. So please be patient with shipping times. Minimum order is 2 speakers. If you already have two and need a third, please contact me so I can figure out packaging and shipping for just a single kit. Titan kits and their flat packs are very big and heavy....shipping can be quite expensive to places along the west coast, Utah, Arizona, very rural areas, etc. Due to the weight of three kits being nearly 300lbs, shipping costs for the flat packs sometimes shows more than it actually is. When that happens, I will refund the difference.
The Titan-815LX utilizes a customized high powered Celestion TF1530E 15" woofer for great bass performance while allowing for crossover points as low as 40hz without losing the ability to keep up with massive subwoofer systems in large rooms. This woofer has been customized with a larger rear vent and stiffer surround for extra power handling. The waveguide loaded 8" midrange and high frequency compression driver provide excellent coverage with little change in sound as you move off axis. This gives you a very wide sweet spot, so when properly aimed no listener is left out. Another great feature of the waveguide loaded midrange and compression driver is their ability to provide lifelike dynamics and exceptionally low distortion, not only felt or heard during loud sequences but in quiet passages where its ability to resolve subtle details is not lost. The crossover design gives a very flat frequency response with a slight bump on the bottom end to provide a little extra kick that a speaker of this size should offer.
This LX version uses a long throw 15" woofer capable of handling high power levels or lower crossover points while still remaining linear. It also uses a compression driver with a high powered neodymium magnet along with a larger voice coil and diaphragm. While those attributes give the high frequency driver the ability to play at higher output levels with low distortion the well optimized design of the driver has also has proven to provide superior levels of detail and clarity at all volume levels.
Product Highlights:
- 2 way Mid/High frequency waveguide provides excellent constant directivity and pattern control from 500hz to 20khz.
- Very high output 3 way design and easy to power with a 99dbv/meter sensitivity rating.
- High excursion custom 15" Celestion woofer.
- Compression driver with neodymium magnet and PETP diaphragm for a smooth non harsh sound.
- Will handle 1000W peak power and capable of 125db+.
- Designed to work best for home theater when paired with a large subwoofer system.
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, but flat packs normally do not. 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.
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Incredible speaker review by Bobby on 1/27/2025The titan 815s are incredible. For the price you can get them for it's a no brainer to buy them. They easily outcompete speakers in their price bracket and several brackets above. They have a massive sound stage, excellent instrument separation and the best phantom center I've ever heard in stereo. My wife even said they sound better than our previous speakers when I was testing them before EQ. They are detailed and have that fun airy/alive sound quality to them at the same time. Their particular strengths in music are female vocals and guitars. On my AVR they can play at ear bleeding levels without breaking a sweat or even hinting at the possibility of distorting.
I bought the flat packs and wave guide bracket because these are in our living room and I needed as much spousal approval factor as possible. They look professionally built and were simple to assemble. The hardest part was figuring out how I wanted the circuit boards to sit in the box to hide them, but they could easily mount behind the wave guide on the brackets (wife didn't want to see them so I did the extra work to hide them). Everything with these speakers from the packaging to the materials utilized are high quality and speaks to the dedication Erich has put into DIYSG.
I wanted to give some thoughts on how these speakers sound compared to what I've had experience with in my own home. I've gone from andrew jones polk 5.1 bookshelf system to an SVS ultra 5.1 system and then upgraded my LCR to polk r700s with a 1099 center. The andrew jones are an obvious step up from a sound bar and are likely good enough for 90% of people. The SVS ultras were very detailed and critical, but lacked that movie theater quality and sounded constrained/small in my larger living room likely due to their lower sensitivity. The SVS were also the best looking speakers I've had. The polk r700s were a step up in sound quality across the board from the SVS ultras, but finicky to get good imaging with since they have mediocre horizontal dispersion characteristics due to the ring radiator style tweeter beaming effect. They seem best suited for a 2 channel listening experience in a dedicated space. The 1099 had an airiness and theater type of sound with the same amount of detail as the SVS without the constrained feeling. When listening in surround sound mode the superiority of the 1099 really shined compared to the SVS center it replaced. The 815s are in another league compared to the 1099. The same amount of detail, but the soundstage is on another level. Right now I'm in a 21ftx24ft living room with a 7.3.4 system made up of titan 815s for L/R, 1099 center, SVS ultras for surrounds and polk omw3s for atmos. The 815s have significantly improved the overall sound of my system compared to the polk r700s they replaced and which I still love. I've also listened to B&W 804 Ds in a dedicated listening room with amplifiers/CD and vinyl players more expensive than most of my current set up. It made me a firm believer in the law of diminishing returns with audio equipment. I doubt you could find a meaningfully better sound experience beyond the titans for home theater and music listening buying more expensive speakers (spend the money on room treatment/comfy couches/high quality popcorn).
For me, the 815s sound best with 5-10 degrees of toe in placed 5.5 feet from center with my main listening position 10ft away from the TV.
If you have the ability to physically put them in your home/theater buy them the next time they're available because you won't be disappointed.
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| Speaker Kit Information |
| Model: | The Titan-815LX |
| Designer: | Matt Grant and Erich H |
| Frequency Response: | 38hz - 20khz (+/-3db) |
| Power Range: | 40 - 1200 watts |
| Sensitivity: | 99db - 2.83v/1m |
| Impedance: | 8 Ohm |
| Tweeter: | Celestion CDX1-1731 |
| Crossover Point: | 350hz and 1900hz |
| Midrange: | Celestion TF0818MR |
| Enclosure Type: | Ported |
|
Dimensions with Standard Cabinet Sold Seperately: |
Narrow layout: 19.5"W x 42.5"H x 21.5"D Wide Layout: 22.5"W x 39.75"H x 21.5"D |
| Kit weight (no cabinet): | About 40 pounds |
| Assembled weight: | About 90 pounds |
Price Break Down:
1 - Celestion custom surround TF1530E 15" woofer: $1611 - Celestion CDX-1731 compression driver: $139.991- 8" Celestion TF0818MR midrange: $69.501 - Denovo 2-Way waveguide: $431 - Set of 22 crossover parts: $133.694 - 3" x 10" Denovo flared ports: $21.151 - Set of screws and gaskets: $1.50Packaging Material: $10.00
Paypal Fee: $17.15
Retail Cost: $596.51
Discount Cost: $536.22 and shipped for free.
Please read the 'About Us' section for more information on pricing structure and quality parts used.
Specific Titan-815LX Assembly Notes:
Your enclosure should be built with 3/4" thick material with two horizontal "window pane" style braces along with one vertical brace to the dimensions listed below. You can build your own enclosure to a different size, just be sure the internal volume is close to 4cuft net volume. It is recommended that you line the inner panels with 1.5" - 2" thick acoustic style foam or line the inner panels with 2" - 3" denim insulation, but don't block the ports with it.
Narrow Design: 19.5" wide x 29.5" tall x 15.5" deep (standard baffle option and a flat pack is available)
Wide design: 25" wide x 30" tall x 12" deep (there is a flat pack available in this size)
Short Design: 25" wide x 22" tall x 16" deep
Recommended Tools and Supplies:
- Quality wood glue like TiteBond.
- At least 3 clamps 24" 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 8' 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:
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