Building a DIY turtle box speaker is an exciting project that combines fun, functionality, and a great learning experience. Not only will you have a uniqueamped-up speaker at the end of it, but you'll also gain invaluable skills in woodworking and electronics. Here, we've compiled a comprehensive parts list and guide to help you create your perfect turtle box speaker.
Before we dive into the parts, let's briefly explain what a turtle box speaker is. It's essentially a sealed (or sometimes ported) speaker enclosure, often in the shape of a box or, in this case, a turtle shell. The design provides better bass response and sound quality compared to standard open-back or ported enclosures. Now, let's get started!
Turtle Box Speaker Design Considerations
The first step is to decide the size and shape of your turtle box speaker. This will depend on the type of speakers you're using and where you'll be placing your speaker. For a turtle shape, you'll need a curved surface or need to construct it with panels that make up the curved shape.
Next, consider if you want a sealed or ported enclosure. A sealed enclosure provides a tighter bass response, while a ported enclosure offers more output and better bass extension. For a turtle box, sealed is often the way to go for a cleaner sound.
Sealed vs Ported Enclosures
Sealed enclosures, like the one we'll be building, provide a tighter, more controlled bass response. They're great for smaller rooms and apartments where you might not want to disturb the neighbors with excessive bass. They also tend to sound more accurate and detailed.
Ported enclosures, on the other hand, allow air to travel through a port (usually a pipe) in the cabinet, which helps to move the speakers' cones and produce more bass output. They're ideal for larger spaces or when playing music with very low frequencies. However, they can sound less accurate than sealed enclosures.
Speaker Choice and Matching
Next, you'll need to choose your speakers. For a turtle box speaker, midrange and tweeters are typically placed in the shell's "body," while the woofer goes in the "head." You can use any speaker you like, but matching speakers can help ensure a consistent sound.
Matching is when you use speakers from the same brand and model, or speakers that are designed to work well together. This helps to eliminate differences in sound that can occur when mixing and matching parts. Many speaker manufacturers provide matching recommendations for their products.
Detailed Parts List
Now that we've gone over the design considerations, let's talk about the parts you'll need to build your turtle box speaker.
Please note that the following parts list assumes a sealed enclosure with a total internal volume of about 1.5 cubic feet. You can adjust the parts to match your specific enclosure size and speaker choice.
Enclosure Materials
The shell of your turtle box speaker will typically be made from Medium Density Fiberboard (MDF). MDF is dense, smooth, and provides good sound isolation. You can also use plywood, which is a bit more durable but slightly more expensive.
Be sure to get the correct thickness. For a turtle box, aim for 3/4" (19mm) to 1" (25mm) thick material, depending on the size of your enclosure.
Speakers
For this example, let's use a 3-way speaker kit, such as the Dayton Audio S300T3. This kit includes a 6.5" mid-bass driver, a 1" silk dome tweeter, and a 4" midrange driver. This combination should provide a nice frequency range for an all-in-one speaker solution.
Here's a quick summary of the speaker specs for this kit:
- Frequency response: 50Hz - 20kHz
- Sensitivity: 90 dB (2.83V/m)
- Nominal impedance: 8 ohms
- Maximum power: 100W (40W RMS)
Port Baffle (for ported enclosures)
If you decide to build a ported enclosure, you'll need a port baffle. A port baffle is a piece of material that has a hole in it to allow air to pass through. You can buy a prefabricated port baffle or make your own.
Dayton Audio offers a pre-made tuneable port baffle (DA-RX80TND) that's easy to install and adjustable, making it a great option for DIYers.
Crossovers
A crossover is an electronic circuit that directs specific frequencies to their appropriate speaker drivers. In this case, we'll use a passive crossover, meaning it doesn't require an external power source.
Most 3-way speaker kits come with a recommended crossover. For the Dayton Audio S300T3, you can use their suggested passive crossover (DA-MM11) to split the frequencies among the three drivers.
Wiring and Soldering
You'll need speaker wire to connect your speakers to the crossover and, ultimately, to your amplifier. The specific gauge (thickness) of wire will depend on the total resistance of your speaker setup and the length of the wires. For a typical DIY speaker project, 16 or 18-gauge speaker wire should work fine.
You'll also need solder and a soldering iron to attach the speakers and crossover components to their terminals. A soldering station with variable temperature control can help ensure better results and prevent overheating.
Cutting and Assembly Tools
For cutting MDF or plywood to size, you can use a jigsaw or circular saw. A saber saw (also known as a jigsaw) is usually the better choice for cutting curves, while a circular saw works well for straight cuts.
For assembly, you'll need wood glue and clamps to join the enclosure parts together. You may also want to use wood screws or CornerClamp™ units for additional support.
Finishing Touches
Once your speaker is assembled, you'll want to finish it with paint, stain, or some other material to protect it and give it a nice look. For a turtle box speaker, you might want to paint it to resemble a turtle shell. You can use regular wall paint or a spray paint designed for outdoor furniture or metal.
Don't forget to attach speaker grill cloth to protect your speakers and give your turtle box a finished look.
Building a DIY turtle box speaker is a rewarding project that lets you customize your sound and show off your craftsmanship. With the right parts and a solid plan, you'll be enjoying your new speaker in no time. So, grab your gear and get started – your music deserves the best sound you can give it!