DIY 3-way build with ribbon tweeter

Hey everyone - I’ve had a set of DIY 3-ways that my dad and I built about 15 years ago that, unfortunately, I haven’t really been able to use the way I want due to my living situation since then. My partner and I finally moved into a house where we can play music as loud as we want! They still sound amazing, honestly better than any speaker I’ve heard, but the crossover was an off-the-shelf one and I didn’t feel like designing a custom crossover, especially considering the different impedances and styles of drivers.

After looking around a bunch for alternatives and ways to create an active system I came across the Acoustas which is exactly what I was looking for. Once it came I plugged the speakers in and played around with the EQ and got it sounding great, so I knew once I got each individual driver connected it would be better than ever.

I also wanted to completely redesign the cabinets so I used some speaker enclosure calculators to get a rough idea of a good internal volume for the woofer and went from there. My stepdad helped me make the cabinets out of 3/4 plywood (MDF was out of stock when we went, I know it’s typically better but oh well).

I wanted a unique look to go with our living room decor as we already have a lot of medium wood and warm tones, so for contrast I thought a pop of color would help. After considering different wood stain colors, veneers, paint, vinyl, etc. I thought that maybe ceramic tile would look cool. I haven’t seen anyone do this before, so I’m either a trendsetter or there’s a good reason nobody does this :laughing:

Here’s my preliminary Photoshop “render” of my idea along with an AI texture replacement and some other tile projects I found elsewhere:

I ordered some Mexican Talavera tile from Etsy in emerald green, terracotta, and the traditional painted pattern style. It hasn’t arrived yet but I’m so excited to use them; it’ll be my first time using tile and grout too. I’m not going to bother making the cabinets look any better since they’ll be covered entirely by tile and mortar.

Here’s a current parts list for the speakers:

As for the active setup, I am planning on crossing the drivers over at around 700-800Hz and 5500-6000Hz, which is close to the current passive crossover. After doing some modeling I’m going to start with a fourth-order Linkwitz-Riley and go from there.

Looking forward to making progress on this build and will keep this post updated!

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Chris, very interesting finish. I have never seen anything like it. Let us know how they look and sound when you get them all built.

Speakers are finished (almost)! They sound absolutely fantastic and that’s even before going active with the AC650. I had some issues with the tweeter so I hooked up the passive crossovers but I am going to connect the drivers directly next. The only thing left for the cabinets is to add grout and put the other binding posts in.

Results:

So happy with how they turned out. This was my first time ever working with tile, and learning to cut, grind, and use adhesive all for this one project was a lot, but worth it!

The ribbon tweeter is like nothing else - everything sounds incredibly realistic, sparkly, and airy but not sibilant or harsh in any way. The dome mid and woofer are also fantastic, especially for being 20 year old models (at least). No speaker I’ve listened to at any price range comes close, and even with the custom cabinet and tile, the pair cost less than $2000 if you use today’s component prices.

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The Mexican tile finish turned out fantastic and it clearly is a unique custom build. I honestly have no idea how the tile might alter the sound. Usually mass added composite enclosures are a good thing for addressing resonances so I’d imagine it would be mostly positive.

About the only recommendation I would offer would be to elevate them off the floor and away from the wall from a sound perspective. I’m sure your stand creativity would be next level.

Great stuff!