This design is inspired by Marshall speakers, and it delivers great music and sound quality.

I had an old Bluetooth speaker lying around which I had made a year back, but I was not liking the front grill/speaker-holding piece that exposed the speakers, and the design was not very appealing. So I stripped it completely, and since I missed the old blog post on how I made them, let me take you through the complete steps involved and how this one was built.

Materials required

The inventory, or BOM (Bill of Materials), required to build such a speaker at home is as under.

a. Wood / MDF / Ply to make the outer casing or body of the speaker. I chose planks of Deodar wood already lying in my garage to build a box that would be sufficient to hold the amplifier PCB and two 4 inch drivers.

b. Amplifier PCB. I chose a SANWU TDA8932 BT board available on Amazon.in. It delivers amazing output from 10 volts to 36 volts DC.

c. Power supply. The most prudent choice would have been a Li-ion battery pack, either 12V or 15V managed by a BMS (Battery Management System), but since I intend to use it indoors, I chose a 12V DC SMPS (2A) to run the amp.

d. Drivers. I bought a pair of JBL A-140 4 inch drivers from Amazon for this build, based on the reviews and the output power they deliver (22W RMS per speaker).

e. Jute grill. I made a frame and bought half a metre of golden jute cloth from a sofa maker for the speaker grill, stapled it in the correct way from inside, and fixed it with a pressure stapler.

f. Miscellaneous. Basic tools like screwdrivers, soldering machine, connector wires, jumpers, heat-shrink sleeves, pliers, angle grinder, golden inlay (for the grill design), wire cutters, nose pliers, and some DC jacks.

I am quite obsessed with the design and the photos that came out of this build. The box gives it a warm, classic look, and the golden jute grill ties the whole Marshall-inspired feel together.

Originally published on sslabs.in.