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Alto ?VERB Service Manual

24x32 bit digital effects
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Service Manual
Model: αVERB
24x32 BIT DIGITAL EFFECTS
www.altoproaudio.com
Version: 1.1

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Summary of Contents for Alto ?VERB

  • Page 1 Service Manual Model: αVERB 24x32 BIT DIGITAL EFFECTS www.altoproaudio.com Version: 1.1...

  • Page 2: Table Of Contents

    CONTENTS 1. Specification 2. Block Diagram 3. Schematic Diagram 4. Printed Circuit Board 5. Wiring Diagram 6. Test Procedure 7. Electrical Parts List 8. Exploded Views & Mechanical Parts List 9. Notes...

  • Page 3: Specification

    1. SPECIFICATION (aVERB) Electrical Frequency Response: +0.5 / -1.5 dB from 20Hz to 20 kHz S/N Ratio (process) 80 dB "A" wtg, 20 Hz-22kHz S/N Ratio (bypass) >90 dB "A" wtg, 20 Hz-22kHz THD+Noise: <0.008% @ 1kHz (0dBV, bypass) Input Number of Channels: Format: 1/4"...

  • Page 4: Block Diagram

    2. Block Diagram...

  • Page 5: Schematic Diagram

    3. Schematic Diagram...

  • Page 7: Printed Circuit Board

    4. Print Circuit Board BOTTOM LAYER BOTTOM SOLDER MASK...
  • Page 8 BOTTOM SILKSCREEN TOP SILKSCREEN...
  • Page 9 DRILL DRAWING Tool Hole Size Hole Count Plated --------------------------------------------------------------------------- 31mil (0.80mm) 39mil (1.00mm) 47mil (1.20mm) 59mil (1.50mm) 98mil (2.50mm) 118mil (3.00mm) 138mil (3.50mm) --------------------------------------------------------------------------- Totals...

  • Page 12: Required Equipment

    G1 Test Procedures (aVERB) Required Equipment Audio Precision System 2 with APWin software 100 Mhz oscilloscope connected to APS2 Analyzer Signal Monitor outputs (Ch. A and Ch. B) Connection Mode Use Audio Precision System 2 analog unbalanced (BNC) inputs/outputs...

  • Page 13: Test Procedure

    Test Procedures for AlphaVerb Amplitude response test On PC: -Load file: alfaverb_amplitude ( APWin File menu / Open / Test ) Test Connections: -Output A of Audio Precision System Two --> LEFT input of the device under test. -LEFT output of the device under test --> A input of Audio Precision System Two -RIGHT output of the device under test -->...
  • Page 14 THD test On PC: -Load file: alfaverb_THD (APWin File menu / Open / Test ) Test Connections: -Output A of Audio Precision System Two --> LEFT input of the device under test. On the Alphaverb: -Turn on the power switch. -Set INPUT volume to maximum.
  • Page 15 S/N test On PC: -Load file: alfaverb_SN (APWin File menu / Open / Test ) Test Connections: -Output A of Audio Precision System Two --> LEFT input of the device under test. On the Alphaverb: -Turn on the power switch. -Set OUTPUT volume to maximum.
  • Page 16 Dynamics test On PC: -Load file: alfaverb_dyn (APWin File menu / Open / Test ) Test Connections: -Output A of Audio Precision System Two --> LEFT input of the device under test. On the Alphaverb: -Turn on the power switch. -Set INPUT volume to maximum.
  • Page 17 Stability test On PC: -Load file: alfaverb_stability (APWin File menu / Open / Test ) Test Connections: -Output A of Audio Precision System Two --> LEFT input of the device under test. -LEFT output of the device under test --> A input of Audio Precision System Two -RIGHT output of the device under test -->...
  • Page 18 歐洲 Structure Needing Material Detail List Midprod NO Quanity Unit...
  • Page 19 Material No Item Name Specific MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK:...
  • Page 20 Material No Item Name Specific MARK: MARK: MARK: MARK: MARK:...
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  • Page 22 Material No Item Name Specific MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK:...
  • Page 23 Material No Item Name Specific MARK: MARK: MARK:...
  • Page 24 Material No Item Name Specific MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK:...
  • Page 25 Material No Item Name Specific MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK:...
  • Page 26 8. Exploded Views...