Bluetooth, Portable Tower Speaker

Bluetooth, Portable Tower Speaker


Project Category:
Portable Speakers

Project Level:

Project Time:
8-20 Hours

Project Cost:
$100 – $500

Project Description:
This is portable, bluetooth 4.0, battery-powered, tower speaker system.

Design Goals:
To design a portable audio system that was bluetooth capable, durable, and has excellent audio output and battery life.

Enclosure Design:
The front baffle is stained, birch plywood with several coats of polyurethane. The rest of the enclosure was sealed and protected with several Acry-Tech DuraTex available at PE. Front emblem was installed as a signature, and for fun.

Driver Selection:
AuraSound NS3-193-8A 3″ Extended Range Driver 8 Ohm

Enclosure Assembly:
Wood glue and clamps. No screws.

Crossover Design:
No filters added. Drivers run full-range

Tips & Tricks:
When using Acry-Tech DuraTex, make sure your enclosure is sanded and painted properly, leaving no blemishes because they will show through.

After about 20+ listening hours, the sound quality is pleasing. Warm and inviting. The stage is large and if you’ve heard the NS3, you are aware of the detail these drivers produce. Much more low end than expected I’m guessing around 50 Hz. Battery life is about 8 hours at 50% volume listening to all genres of music. I imagine battery life would double listening to music with less demand from the driver.

About the Designer:
Owner of Hi-Fi Luggage which builds bluetooth speaker systems into vintage luggage. Also works as a Marriage and Family Therapist out of Orange County.

Project Parts List

Penn-Elcom 1482 Blank Dish PennBrite 5″ x 7″
Acry-Tech DuraTex Black 1 Pint Roller Grade Cabinet Texture Coating Kit with Textured 3″ Roller
Sure Electronics AA-AB32155 2x15W at 4 Ohm TA2024 Class-D Audio Amplifier Board Only
Sure Electronics AA-AB41136 Bluetooth 4.0 Audio Receiver Board aptX +EDR 12 VDC
Penn-Elcom 0394BK Black Rubber Strap Handle 7″ x 1″
Speaker Cabinet Port Tube 2″ ID Adjustable
Parts Express SPST Automotive Round Rocker Switch Black
Momentary N.O. Round Push Button Switch
3.5mm Stereo Panel Mount Jack
Parts Express #6 x 3/4″ Deep Thread Pan Head Screws Black 100 Pcs.
Sure Electronics ME-DV42333 Blue LED 8.5-30 VDC Panel Meter with Auto Brightness
Gorilla Glue 2 oz. Bottle

1 comment

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  1. 1

    Really a good job, i’m struggling to build my own speaker, but I lack on electronical knowledge. In particular which battery should I use to power up my amplifier if it has 2x channels 125RMS each? class A-B.

    this would help me a lot. thank you in advance

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