Modular Bookshelf Stereo System

A compact sound system designed to be easy for hobbiests to build, improve upon, and modify to suit their needs

This project is in it's initial stages. Questions and suggestion are welcome

Front Rear Amplifier Module

General specs

- module form factor: same as a CD drive, rails required
- inter-module control: I2C or rs232-TTL
- power: 12V unregulated, 2.1mm plug/jack,
- remote control: uses Sony remote control codes
- case: holds 5 modules(the amp counts as 2). front frame is easily removable for access to latches on the module rails

Amplifier Module - control section

- MAX359 dual 4 channel analog multiplexer (to select the source)
- MCP42010 - digital potentiometer (volume control)
- PIC18F452 - 40 pin microcontroller
- 24X2 LCD module. VFD is also an option (they look nicer)
- firmware - open source, gets information from other modules usually to show on the LCD, handles input from the front panel and remote control

Amplifier Module - power amp section

- LM1875 or LM3875 or maybe something else
- don't know what to use for a power supply. A toroid transformer? Iternal? External?

Tuner Module

- Sanyo LV24230 - digital FM tuner, controled by I2C or,
Silicon Labs Si4731 digital AM/FM tuner, with RDS (provides name of current station and song), controled by I2C
- 14 control buttons (10 presets, scan+-, seek+-)
- PIC16F88 - 18 pin microcontroller

HOME PAGE