h)Within 5 seconds of pressing the “Calibrate” button, return to your primary listening seat and hold the microphone in your normal, seated head position at the approximate height of your ears.

i)A series of quick, stepped tones will begin which are used by the A.R.O. software to set an appropriate bass level at your seat for the test. If these tones stop after two to five cycles, the “Calibrate” button’s light will start to blink, indicating a level setting error.

Slow blinking (approximately once per second) indicates the level selected on the “Master Level” control was too low. Increase the Master Level control approximately one eighth of a turn and go back to Step “g”.

If the Calibrate light is blinking quickly (approximately 3 times per second), this indicates that the “Master Level” was set too loud. Decrease the Master Level control by approximately one eighth of a turn and return to Step “g”.

j)When the “Master Level” is properly set, a slow series of tones will be played from 20 Hz to 100 Hz after the stepped, level-setting tones. During this process, the A.R.O. system is taking a frequency response measurement at your listening seat. When A.R.O. is finished calibrating, the “Calibrate” button will light and stay on, indicating a successful calibration.

k)Return your Fathom’s front panel controls to their previously determined settings (before the A.R.O. calibration run) and re-tweak the subwoofer output level as described in Step 1 (Level Setting) on page 28. Since the A.R.O. will smooth the largest peak in the bass response at the listening seat, the apparent subwoofer level may appear lower. Simply increase the subwoofer level until you are satisfied.

IMPORTANT! IF YOU MOVE YOUR FATHOM OR PRIMARY LISTENING SEAT IN THE FUTURE, YOU WILL NEED TO RUN A.R.O. AGAIN. ANY PARTICULAR CALIBRATION IS UNIQUE TO THAT PARTICULAR SUBWOOFER POSITION AND LISTENING SEAT POSITION COMBINATION. SIMPLY FOLLOW THE STEPS ABOVE TO CREATE A NEW CALIBRATION CURVE.

5) Extreme Low Frequency (e.l.f.) Trim

Use the “e.l.f. trim” control to adjust the extreme low bass extension of the Fathom. This control allows -12 dB of cut or +3 dB of boost at 25 Hertz and is particularly useful when using a Fathom (or two) in a small to medium sized home theater. Since smaller enclosed spaces help to boost the level of the lowest bass frequencies, smaller theaters can be overwhelmed by the strong low-bass output of the Fathom subwoofer. This can create a “thick” or “bloated” character in the lower bass region. Turning down the “e.l.f. trim” knob cuts the extreme low bass level and alleviates this condition. Feel free to experiment and listen to a variety of demanding material until you find the best match for your room and your tastes.

Your Fathom is now optimized for maximum bass performance at your listening seat. Congratulations!

IMPORTANT

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Fathom f212

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JL Audio f212 owner manual Extreme Low Frequency e.l.f. Trim
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f212 specifications

The JL Audio F212 is a premier subwoofer designed to deliver exceptional low-frequency performance for audiophiles and music enthusiasts alike. As part of JL Audio’s renowned subwoofer offerings, the F212 stands out due to its advanced engineering and innovative technology, providing an unparalleled audio experience.

At the heart of the F212 is its unique dual 12-inch driver design, which enables it to reproduce deep bass notes with remarkable clarity and power. The drivers are engineered using JL Audio’s proprietary technology, including a high-excursion suspension system that allows for maximum cone movement without distortion. This ensures that the F212 can handle high power levels while maintaining accuracy across the frequency spectrum.

One of the standout features of the F212 is its robust construction. The subwoofer enclosure is built from high-quality MDF (medium-density fiberboard), designed to minimize resonance and prevent unwanted vibrations that could color the sound. The enclosure is also meticulously tuned for optimal performance, allowing the subwoofers to operate efficiently and deliver rich, immersive bass.

The F212 utilizes advanced thermal management technologies, ensuring that the drivers remain cool during prolonged use. This is achieved through strategically placed venting systems that promote airflow and minimize heat buildup. As a result, users can enjoy continuous, powerful bass performance without the concern of overheating.

In addition to its impressive physical characteristics, the F212 is equipped with sophisticated signal processing capabilities. This allows for seamless integration into any audio system, whether for home theater or high-fidelity music reproduction. The subwoofer features adjustable crossover settings, phase control, and volume adjustments, enabling users to tailor the sound to their specific preferences and room acoustics.

Another noteworthy aspect of the F212 is its versatility. It can be used in various applications, from home audio setups to professional sound reinforcement, making it an ideal choice for anyone seeking to enhance their bass performance. With its combination of power, precision, and advanced technology, the JL Audio F212 stands as a testament to the company’s commitment to delivering high-quality audio solutions that exceed expectations.

In essence, the JL Audio F212 is not just a subwoofer; it’s a statement of quality and performance. Its robust build, innovative technology, and impressive sound output make it a top choice for serious music lovers and home theater enthusiasts seeking to elevate their auditory experience. Whether you’re deep into a cinematic experience or enjoying your favorite music, the F212 is sure to deliver the thunderous bass and clarity that will leave a lasting impression.
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