Aiko L-12 L-16 L-20 free download

File name alto_l-12_16_20_ver2.0.pdf

Service MODEL: L-12/16/20 www.altoproaudio.com Version 2.0 CONTENTS 1. Introduction...2 2. Specification...3 3. Black Diagram...5 4. Schematic Diagram...6 5. PCB Layout...25 6. Wiring Diagram...41 7. Test Procedure...42 8. Exploded Views & Mechanical Part List...46 9. BOM...49 1. Introduction ALTO L12,L16,L20 FEATURES CHANNEL STRIPS. AUX send 1/2 switch-able to PRE/POST fader 60 mm high precision faders Each input channel with Mute, SOLO function, low cut filters-75Hz, 18 dB/OCT and Overload & signal present LEDs. Group "SUB" 1-2", "SUB3-4", or "main L-R" mix send switch-able 4 AUX sends with master control and SOLO function per channel: 2 ЎС PRE/POST fader switch-able for monitoring/digital EFX application, 2 ЎС post fader(for internal digital EFX or as external send) 4-band fixed EQ on stereo line channels 3-band EQ with Swept mid on microphone channels Channel inserts and direct output on each mono channel plus main mix inserts for flexible connection of outboard equipment. MASTER SECTION 24-bit DSP effect built in True stereo 9-band graphic EQ Adjustable mono main output by control level BNC socket for connecting gooseneck lamps. Separate outputs for 4 submaster control to enable more flexible routing Separate subwoofer crossover and output Special XLR Subwoofer out with 75Hz low pass Control room/phone matrix 2 headphone outputs 2.8. TECHNICAL SPECIFICATION Specification (L-12/16/20) Mono input channels Microphone input electronically balanced, discrete input configuration Frequency response 10Hz to 55kHz, + 3dB Distortion (THD & N) 0.005% at + 4dBu, 1kHz Gain range 0dB to 60dB (MIC) SNR (Signal to Noise Ratio) 115dB Line input electronically balanced Frequency response 10Hz to 55kHz, + 3dB Distortion (THD & N) 0.005% at + 4dBu, 1kHz Sensitivity range +15dBu to 45dBu Stereo input channels Line input Balanced/unbalanced