Audison AF Forza Bit Amplifiers Lecture Notes

Introduction

• Overview of advanced DSP sound processors.
• Utilizing DSP processing for optimal sound can be complex.
• Multiple methods to achieve a high-quality car audio system.
• Focus is on a proven tuning process for great stereo sound from the driver’s seat.

Requirements

• Mono-Pink Noise Source:
  • Use downloadable tracks for AF Forza.
  • USB drive/CD with just mono-pink noise is recommended.
• Measurement Microphone:
  • Options include USB measurement microphone or XLR microphone with USB sound card.
  • Use two active USB extension cables for connections.
• Power Source:
  • Connect the vehicle to a clean 12 volts DC source to prevent battery depletion.

Basic System Setup

• Example setup: 2-way active front stage and subwoofer.
• Initial steps should be completed per AF Forza video tutorials, including software setup.

Tuning Process

Step 1: Confirm Input Signal

• Ensure input signal is flat and full range.
• Use mono pink noise at ~75% volume.
• Check input signals using bit Drive software.
• Address phase or time delay issues before proceeding.

Step 2: Enter Crossover Points and Speaker Distances

• Bit Drive software suggests basic crossover points.
• Customized crossover settings available from Audison.
• Measure and input speaker distances to facilitate delay settings.

Step 3: Quality Control

• Conduct a quick check with mono pink noise.
• Validate speaker connections and polarity.

Step 4: Audio Analyzer Setup

• Set up microphone and Real-Time Analyzer (RTA).
• Choose appropriate RTA resolution and refresh rate.
• Adjust graph boundaries for optimal viewing.

Step 5: Adjust the Equalizer

• Begin with the far front side speakers using Parametric EQ mode.
• Identify and adjust peaks to reach target reference curve.

Step 6: Measure and Adjust Full System

• Play entire system and check alignment with reference curve.
• Address subwoofer levels, phase, and EQ adjustments.

Step 7: Test Stereo Imaging

• Use test tones or specific songs to verify stereo imaging.
• Address any phase or level mismatches.

Step 8: Listen to Music

• Use Final Tune EQ for any necessary adjustments.

Step 9: Finalize Settings

• Save settings to AF Forza amplifier’s nonvolatile memory.
• Backup configuration file to PC.

Conclusion

• Reviewed step-by-step tuning process.
• Emphasized understanding and application of tuning for DSP amplifiers.
• Final save and backup to ensure settings retention.

Note: Future videos will address more complex system configurations.

These notes summarize the critical steps and considerations in using Audison AF Forza bit amplifiers for car audio system tuning. The emphasis is on achieving optimal sound for DSP applications effectively and efficiently.