AMP2051

Simple Audio Amp Controller with remote control

Table of contents:

• Specifications
• User Manual
• Schematics
• Reference Designs
• Contact

Specifications

• 4 stereo inputs
• 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 3 buttons and rotary encoder
• Dynamic step size control for the rotary encoder
• Remote control with RC5, device learns address
• Standby LED
• Display: two blocks of four LEDs
• Backup with EEPROM of all adjustments
• Delay for speaker relays
• Automatic recognition of empty EEPROM

Schematic

• digital part
• analog part, tuning tip: use for all capcitors in the signal path foil capacitors (e.g. 2.2µF MKT)
• extensions and replacements 1
• extensions and replacements 2
• tables and hints for the power supply design and component selection
• On the pages of the reference designs block schematics and photos of different constructions.

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