This is a "quick design" to make surround sound dock for Apple iPod, iPhone and iPad devices. This audio docking module contains analog surround sound processor, bass booster and electronic mode switch.

Main components of this surround sound dock are LA2610 - analog surround sound processor and ATTiny13 - 8bit MCU. This unit is design to work with 9V external DC power supply and it can deliver maximum of 2 × 1W audio output power.

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Printed Circuit Board Design of Surround Sound Dock

In prototyping stage we test this system with couple of Apple iPod and iPad devices with 4inch full range 8Ω speakers. This system can also drive professional headphone through its "Ext. Output" connector. This system need 160mm × 100mm double side PCB and it is specifically design for vertical docking chassis.

This project is an open source hardware project and its design and other related materials are distributed under the terms of Creative Commons - Attribution 3.0 Unported license. Project Firmware source code is distributed under the terms of GNU General Public License 3.0.

Project Related Downloads


Complete schematic, PCB diagrams and firmware files of Surround Sound Dock

References


ATtiny13 - Low-power Atmel 8-bit AVR RISC-based microcontroller
LA2610 - Analog Surround Processing IC
CD4053 - CMOS Analog Multiplexer with Logic Level Conversion
TDA2822M - Dual Low-Voltage Power Amplifier
LM78L05 - 3-Terminal Positive Regulator
IRF9610 - Single P-Channel HEXFET Power MOSFET
2N3904 - Silicon NPN Epitaxial Transistor
Apple iPod, iPhone (2G, 3G), iPad Dock connector Pinouts