Waterproof Bluetooth Speaker

Materials used: Waterproof plastic with a matte soft touch finish, silicone rubber button casing, Lithium Polymer battery, iron or Aluminum speaker (which includes a cylinder plate, magnet, basket with a soft wire mesh cloth for the “spider” and “cone”, and a dust cap at the end, see diagram below for a speaker breakdown!).

Looking up the parts and chip numbers on the circuit board was no easy task. I managed to find a couple but not all. (see list below)

A1SHB: P-Channel Trench Power MOSFET (The A1SHB uses advanced trench technology to provide excellent RDS(ON), low gate charge and operation with gate voltages as low as -2.5V. This device is suitable for use as a battery protection or in other switching application.)

SS14: Surface Mount Battery Rectifier (Guarding protection, low forward voltage, reverse energy tested, high current capability.)

K8002D: Electronic Component Integrated Circuit (ICs) which functions as an amplifier — in practice denotes any semiconductor-based chip comprising an integrated set of digital circuitry

2TY: Silicon Epitaxial Planar Transistor

J3y: Plastic-Encapsulate Transistors (Complimentary to S8550)

I used a pair of clippers, a magnifying glass and my bare hands to tear this speaker open. There wasn’t much to it really, just some brute force.

I do love the overall circle motif of the speaker’s design. Every outer surface piece of this was rounded, from the button interface to the plastic suction cup at the back. I thought this was a lovely extension of the circularity of the internal shaping of the speaker mechanism.

I also do appreciate how compact this speaker was built – the LiPo battery was stuck onto the circuit board with 3M double sided tape, with no indication of the battery voltage or care for alignment. The somewhat haphazardness of the construction of this item subtly implied the story behind who put this together and how potentially speed was valued over precision.

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