AMP51RTC
by Martin Clausen (mc AT rotgradpsi DOT de)
Audio Amp Controller with remote control, clock and LCD
Table of contents:
- 4 stereo inputs
- Each input can set to be inactive
- Volume control over 75 dB in 64 steps
- Preamplification factor (0, 6, 12 or 18 dB) for each input individual adjustable
- Low and high frequencies +/- 14 dB adjustable, in 15 steps
- Volume, balance- and preamplification control with TDA7318
- Mute with 100 dB attenuation
- Signal to noise ratio 106 dB
- 4 speaker outputs
- Attenuation of the speaker outputs from 0 to 37.5 dB in 32 steps individual adjustable
- Record output
- Control with 6 buttons and rotary encoder
- Dynamic step size control for the rotary encoder
- Remote control with RC5, device learns address
- Display: backlight LCD, size 16*2
- Inputs can be named by the user
- Displays time, weekday and date
- Standby LED
- Battery buffered clock
- 16 alarms with weekday, time input and volume programmable
- One time timer for power on
- Sleep
- Battery backup of all adjustments
- Low active clipping and error input
- Delay for speaker relays
Because the concept is modular, there are 4 schematics:
Programmed controller available on request!
The part description in schematics is read as follows:
part type + value in exponential form + package description + subpart number in package
for example: C1040805,1 means Capacitor, 100nF, package SMD 0805, first subpart in package
Contact via: mc AT rotgradpsi DOT de
