How to Tune Your Audison AF M12.14 DSP Amplifier

Quick Answer

To tune your Audison AF M12.14 BIT Forza amplifier, start with the DSP software, set crossover points, adjust time alignment, and level-match each channel.

Step-by-Step Tuning Process

1. 1. Connect and Install the DSP Software: Download the Audison bit Tune software from the official website. Connect your laptop to the amplifier via the USB port. Open the software and ensure the amplifier is recognized. Make sure your laptop has the correct drivers installed before connecting.
2. 2. Set the Input and Output Configuration: In the software, select your input source (e.g., high-level from factory radio or low-level RCA). Configure the number of output channels (up to 12) and assign each to a speaker (tweeter, midrange, subwoofer). Double-check the speaker impedance to avoid overloading the amplifier.
3. 3. Adjust Crossover Points and Slopes: For each output channel, set the high-pass or low-pass filter. Typical crossover points: tweeters at 2.5-3.5 kHz (12 dB/octave), midrange at 300-500 Hz (12 dB/octave), subwoofers at 80 Hz (24 dB/octave). Use the software's graphical interface to fine-tune. Using too steep a slope (e.g., 48 dB/octave) can cause phase issues; start with 12 or 24 dB/octave.
4. 4. Set Time Alignment: Measure the distance from each speaker to the listening position (usually the driver's seat). Enter these distances into the time alignment section of the software. The DSP will automatically delay channels to create a cohesive soundstage. If you cannot measure distances, use the software's auto-alignment feature based on a test tone and microphone.
5. 5. Level-Match Each Channel: Play a 0 dB test tone at a low volume. Use the software's level meters to adjust each channel's gain so they match. Start with the subwoofer, then match the midrange and tweeters. Aim for equal output from all speakers at the listening position. Never max out the gain; leave headroom to avoid clipping.
6. 6. Fine-Tune with an RTA Microphone: Connect a calibrated USB microphone (e.g., Dayton Audio iMM-6) to your laptop. Play pink noise through the system. Use the software's real-time analyzer (RTA) to view the frequency response. Adjust EQ bands to flatten the response, targeting a neutral curve. Avoid boosting frequencies that cause distortion; it's better to cut problematic peaks.
7. 7. Save and Test Your Tune: Save the configuration to the amplifier's internal memory. Play a variety of music tracks (vocals, bass-heavy, acoustic) to test the sound. Adjust EQ and time alignment as needed. Listen at different volumes; a tune that sounds good at low volume may distort at high volume.

Product Facts

• Audison AF M12.14 BIT Forza Series 12-Channel Amplifier with 14-Channel DSP: The AF M12.14 bit offers twelve high-fidelity amplified channels at 60W x 12 @ 4Ω and 90W x 12 @ 2Ω with latest-generation Audison D-Class technology. This power output allows you to drive a complete active speaker setup, but each channel must be individually tuned for balanced sound.