DIY Bluetooth Speaker on DSP ADAU1701 скачать в хорошем качестве

DIY Bluetooth Speaker on DSP ADAU1701

The project turned out to have high sound quality due to the DSP processor. Case dimensions 180x175x255 Weight 4.2 kg Components: 1 20mm beech tree covered with Varathane oil dark walnut 2 Bluetooth module AIYIMA Qualcomm QCC5125 3 RDC2-0027v3 ADAU1701 + PCM5102A DAC 4 DC-DC for Amplifier from 12V to 30V 5 DC-DC for ADAU1701 from 12V to 5V 5 DC-DC B1212S-2W for Bluetooth module 6 Potentiometer 10kOm - 3pcs (Volume, bass, terble) 7 Speakers AIYIMA 3 inch 8om (87gHz, nominal power 25W, max 60W) 8 Speakers GHXAMP 1 inch 8om (20W) 9 Amplifier AIYIMA TPA3250 10 Type-C Micro USB 3S charger 11 Battery 18650 3000mAh - 9pcs (12V) + BMS Balanced 3S 60A In the latest version of the improvements, I changed the voltage converter to a more powerful one and added another 3 pcs of 18650 batteries (Battery now 3S 12.6V 9000mAh) Many sound improvements were applied: 1. Power-on delay 2. Adjust the volume, bass and treble frequencies. 3. Correction of the frequency response curve (Auto equalizer based on frequency response measurements with a microphone) 4. Tone compensation (by volume control level) 5. Separation filter for low-frequency and high-frequency speakers)