Amplifier Dock

Amplifier Dock uses the hemispherical shape of an ordinary dinnerware bowl to amplify an iPhone’s built-in speaker, allowing iPhone users to listen to music or other streaming media aloud at a lower than normal set volume, thereby conserving battery life.

Amplifier Dock by Timothy Wikander from timothy wikander on Vimeo.

Materials

(1) 3/8" thick piece of Hardwood (or Plywood) at least 2 1/2" W x 10" L

(1) Bowl at least 6 1/4" DIA and 2 1/2" height (use larger diameter for iPhone 6 and above)

(2) #10 x 3/4" flat head screws

(2) #10 t-nuts or threaded inserts

(1) small piece (at least 3" square) of 1/8" thick wool felt, or other compressible material

Tools and Supplies

Planer or Table Saw (if using hardwood)

Jigsaw (if using plywood)

Miter saw or Pull saw

Belt/disc sander or Hand file

Drill press or Corded Drill

Drill bits and Countersink bit

Mallet or Hammer (for installing t-nuts or threaded inserts)

Tape measure and Square

220 and 400~600 grit Sandpapers

X-acto knife or Fabric shears

Awl or Hole punch

Craft glue

The wood portion of the dock is comprised of three parts, all of which are the same thickness. Planing dimensional sized lumber can be achieved with a planer or table saw. If you don't have access to these tools, you can find small panels of 3/8" plywood at most big box home improvement stores.

Next, use the table saw to cut your 3/8" piece of wood to a 2.31" width (width of iPhone 4/5). Adjust accordingly for newer models. If you're using plywood for your build, you can complete this step with a Jigsaw.

Pro tip: Keep a consistent feed rate while cutting to prevent burn marks.

Use a table saw, miter saw, or hand saw to cut your 3/8" x 2.31" piece of wood into the three separate lengths:

A) 6.00"

B) 2.31"

C) 1.00"

See cut sheet for remainder of measurements.

For t-nuts, you'll want to create a shallow pocket in the base of the dock to account for the depth of the flange. In hindsight, t-nuts were a bit overkill and could have caused the wood to split.

Pro tip: tapping inserts or even press-fit/screw to expand inserts will work just as well and are easier to install.

For t-nuts, you'll need to drill a hole (on-center with the pocket) to allow clearance for the barrel.

Rather than drilling through the remaining components individually, you can simply sandwich the pieces together with some masking tape and drilling them at the same time. Countersinking the top component isn't necessary, but makes for a cleaner aesthetic.

Use a hammer or dead blow hammer to install the t-nuts or press-fit threaded inserts. For tapping inserts, use the corresponding driver.

It's coming together now! Use a disc sander, belt sander, or hand file to round the corners to a .35" radius (iPhone 4/5).

220 and 400 ~ 600 grit sandpapers should do the trick here.

A thin, compressible spacer is what allows Amplifier Dock's flat wooden components to magically hold onto the lip of a round bowl. Use an X-acto knife or pair of Fabric shears to cut out a rounded 2.3" square from 1/8" thick wool felt or a similar compressible material.

Use craft glue to attach your rounded wool felt square to the bottom of the cap.

Using the pre-drilled holes as a guide, poke holes through the wool felt to allow the screws to pass through.

Place the bowl inside the wood components and tighten down on the screws until you have a snug fit. You're done! I hope you enjoyed! Feel free to share your Amplifier Dock experience in the comments below.

Cheers!

Amplifier Dock by Timothy Wikander from timothy wikander on Vimeo.