At this point, you may simply enter the data you just STOP measured into the R.A.B.O.S. calculator, found on the

Infinity Web site at www.infinitysystems.com. After entering the data, this R.A.B.O.S. wizard will return the correct settings for all three R.A.B.O.S. controls: ‚, ⁄ and ¤. Skip to page 14 and adjust these controls as described, and finish the R.A.B.O.S. setup. If you would like to manually calculate the R.A.B.O.S. settings, simply continue following the instructions from this point.

What Does a Parametric Equalizer Do?

The R.A.B.O.S. system uses one band of parametric equalization for response correction. Parametric equalizers are the most versatile class of filters. The effect an equalizer will have on the signal is dependent on three parameters.

Frequency: The equalizer will have maximum effect at one frequency, usually described as the center frequency.

Level: This refers to the amount of cut (in dBs) the equalizer is set for.

Bandwidth: Defines the range of frequencies over which the equalizer will have an effect. On the Cascade Model Twelve, this adjustment is abbreviated as “Width.”

Only parametric equalizers allow independent adjustment of all three parameters.

These will be explained more fully in the sections that follow.

Completing the Measurement Template

Along the bottom of the Measurement Template are three fields where you will enter the equalizer settings needed to complete system optimization.

These instructions are based on the example in Figure 11. Use this tutorial to become familiar with the process. Strategies for several other test results will be presented later. After you have completed these three entry fields, you will be ready to perform the adjustments, completing R.A.B.O.S. optimization.

Frequency

The frequency of the R.A.B.O.S. equalizer may be adjusted to any one of nineteen frequencies from 20Hz to 80Hz. This defines where you are going to apply equalization.

Width

The frequency range of the R.A.B.O.S. equalizer may be set from 5% to 50% of an octave in 21 steps. This setting defines how much of the Cascade Model Twelve’s output will be equalized.

Figure 11. Effect of adjustable width

Width is expressed as a percentage of an octave. For example, a width setting of 25% means the equalizer will affect a frequency band of 1/4 of an octave; 1/8 of an octave above and 1/8 of an octave below the center frequency.

The octave is a logarithmic expression. From any point in the spectrum, one octave above or below that point is always double or half the frequency. Therefore, one octave above 100Hz would be 200Hz. One octave below 100Hz is 50Hz.

In the section that follows, we will discuss the use of the Width Selector.

9 Cascade Model Twelve

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Infinity Model Twelve manual What Does a Parametric Equalizer Do?, Completing the Measurement Template, Frequency, Width
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Infinity Compact Powered Subwoofer, Model Twelve specifications

The Infinity Model Twelve is a compact powered subwoofer designed to elevate your audio experience with its remarkable sound quality and advanced technological features. This subwoofer is engineered to provide deep, rich bass that complements a variety of audio formats, making it an excellent choice for both home theater systems and music playback.

One of the standout features of the Infinity Model Twelve is its innovative design. The subwoofer is equipped with a high-performance 12-inch woofer that delivers powerful low-frequency response. This allows it to reproduce those deep bass notes that are often missing in standard speaker setups. The result is an immersive listening experience that brings movies and music to life.

Another key technology incorporated into the Model Twelve is its built-in Class D amplifier. This amplification technology not only provides sufficient power to the subwoofer without the bulk of traditional amplifiers but also ensures energy efficiency. The Class D amplifier maximizes performance while minimizing heat generation and power consumption, making it an eco-friendly option.

The subwoofer also features an adjustable crossover frequency, allowing users to customize the integration of bass with their existing speaker system. This flexibility ensures that the Model Twelve adapts seamlessly to different audio setups, enhancing the overall sound quality while catering to individual preferences.

Moreover, the Infinity Model Twelve includes phase control and volume adjustment features. These controls make it easy to fine-tune the subwoofer's output to achieve the perfect balance within your home audio environment. Whether you're watching an action-packed movie or listening to intricate musical arrangements, these adjustments help optimize playback.

In terms of build quality, the Infinity Model Twelve features a robust and stylish enclosure that not only looks great in any space but also minimizes resonance, ensuring clean and distortion-free audio. Its compact size makes it easy to integrate into smaller living areas without sacrificing performance.

In conclusion, the Infinity Model Twelve is a feature-rich compact powered subwoofer that excels in providing high-quality bass response. With its advanced technologies, user-friendly controls, and stylish design, it stands out as a strong contender for anyone looking to enhance their audio experience. Whether for home theater or music enjoyment, the Infinity Model Twelve delivers performance and versatility that is hard to beat.
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