Designer:
GaryG

Project Category:
Portable Speakers

Project Level:
Beginner

Project Time:
1-8 Hours

Project Cost:
Under $100

Project Description:
This is a build project I conceived for a friend’s 8-yr-old grandson (who is quite handy with various power tools and a soldering iron!).

Design Goals:
Self-contained portable enclosure comprising a stereo speaker arrangement plus amplifier/bluetooth receiver.

Driver Selection:
Qty 4: Parts Express sourced 1-1/2″ x 7″ 16-ohm full-range drivers (specified as surplus flat screen television speakers).

Enclosure Design:
Plastic ammo case (11” x 5” x 7.25”)

Enclosure Assembly:
Rectangular cutouts for the four drivers; two per box side for the L&R stereo configuration. Velcro adheres the amplifier to the case exterior.

Crossover Design:
None; drivers driven full-range. Each of the two driver pairs are wired in parallel, yielding an 8-ohm load per left & right channel.

Tips & Tricks:
All driver wire connections are soldered for ultimate portable reliability.

Conclusion:
Fun & easy to assemble; sound is quite full with respectable bass response. The amplifier offers both bluetooth and a 3.5mm jack for stereo audio input.

About the Designer:
Retired engineer who enjoys fun with audio 🙂

Project Parts List: