Cherry Blue

Cherry Blue


Project Category:
Portable Speakers

Project Level:

Project Time:
8-20 Hours

Project Cost:
$100 – $500

Project Description:
Portable Bluetooth speaker

Design Goals:
portable, long lasting and pretty

Driver Selection:
Part # 295-415
Part # 275-035

Enclosure Design:
solid Cherry 13/16″ with walnut keys. custom leather baffle and handle. the box is tuned to 55hz

Enclosure Assembly:
glue and miter keys

Crossover Design:
crossover point around 4500

pretty happy with the sound and looks.

About the Designer:
self taught woodworker for the last 30 years, turned architect, wishing i was woodworking full time.

Project Parts List:

Dayton Audio TCP115-4 4″ Treated Paper Cone Midbass Woofer 4 Ohm
Dayton Audio ND20FB-4 Rear-Mount 3/4″ Soft Dome Neodymium Tweeter
Dayton Audio KAB-250v3 2x50W Class D Audio Amplifier Board with Bluetooth 4.0
Dayton Audio KAB-BE 18650 Battery Extension Board for Bluetooth Amplifier Boards
Dayton Audio KAB-PMV3 Panel Mount for KAB-v3 Boards with Function, LED, and Install Kit
18650 2600mAh Li-Ion Flat Top Battery 3-Pack


Add yours
    • 2

      Hey Bob. the inside dimensions are 5″H x 15″L x 4.5″D
      it looks a lot bigger than that, but that is due to the wood i used and the bevel on the front to protect the speakers if the box flipped over. i think the final outside dimensions ended up being 6.5″ x 6.5″ x 16.5″ or close to that.

  1. 5

    Beautiful project! Thanks for sharing. Are you happy with the design long-term? Any tweaks you would consider after being with it for awhile?

    • 6

      Thanks Tom, i am very happy with it. I built this as a gift to my sister and she says its perfect in every way.. who am i to argue! i just actually bought all the components to build a second one i was happy with it so much.

    • 8

      Hey Jeff, my sister, who i built this for, says she runs it almost every day and gets about 8hrs of playtime with just the single KAB BE board. i did build it to accept 2 boards but didn’t end up putting in both.

  2. 9

    Lovely project, well done. One question though, could/would you list what components you used for the cross-overs, and maybe even a wiring diagram?

    • 10

      Thanks Ross,
      this is the first crossover i have designed so i’m sure there is much that can be improved upon. but here is a link to what i did. if that doesn’t come through i will put the actual parts i ordered below.

      Dayton Audio 1.2mH 20 AWG Air Core Inductor Crossover Coil – Part # 257-050
      Dayton Audio 0.40mH 20 AWG Air Core Inductor Crossover Coil – Part # 257-032
      Dayton Audio PMPC-1.0 1.0uF 250V Precision Audio Capacitor – Part # 027-210
      Dayton Audio PMPC-2.7 2.7uF 250V Precision Audio Capacitor – Part # 027-218
      Dayton Audio DNR-10 10 Ohm 10W Precision Audio Grade Resistor – Part # 004-10

+ Leave a Comment