Infinity Model Twelve manual Example 4. Narrow Response, Example of two narrow dips

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1.Select a new test position: Cue the test track corresponding to the center frequency of the dip. In the first example in Figure 18, you would play Track 13 (56Hz). Press Play › . You will see a reading very close to what you had before. Now, slowly move the RSLM around the area, if possible remaining within about a foot of the original test point. As you move the RSLM, watch the bar graph. You will observe large level fluctuations. Find a position that restores the level to approximately that of the adjacent test points. You may find it helpful to move the RSLM vertically. Dips can be oriented in any axis. The position that restores the level to about that of the adjacent test points is your new test position.

2.Reset the test level: Return to the section “Setting the Subwoofer Test Level” on page 7. Perform the procedure as described.

3.Repeat the measurements: Now that you are familiar with the measurement process, you can go much faster by using Tracks 27–50. These tracks contain all the test tones necessary for measurement. However, each test is only about three seconds, and there is no frequency announcement. The first test is 100Hz. Just place each test mark in order until finished. Connect the dots.

Your second measurement will no longer exhibit the deep response dip. However, the peak will still be evident. Without the influence of the response dip, the amplitude and center of the peak may have changed. Compare your new data to the examples given in this section of the manual. Follow the instructions for the example that most closely matches your new measurement.

Example 4. Narrow Response:

Figure 18. Narrow Response

Although it looks as though this system is quite bass-deficient, this is actually indicative of a single, very narrow peak in excess of 10dB high.

Apply the Width Selector as described above. Align the center-line of the Selector over the center of the peak, as shown in Figure

13.Now adjust the Selector until you have achieved the “best fit.” The slider now points to the correct width setting. In this example, the frequency is 40Hz and the best-fit width is 10%. Fill in the Width and Frequency fields provided on the template.

Determine the appropriate level using the technique described earlier. In this example, –13dB is indicated. Enter 13 in the field provided.

Skip to the “Adjusting the R.A.B.O.S. Equalizer”section on page 14.

Example 5. One or More Narrow Dips:

Figure 19. Example of two narrow dips

Response dips can occur at any frequency, sometimes immediately adjacent to the peak you want to correct. In this example, there are two such dips on either side of the peak. Deep response dips such as these are caused by destructive wave interference. Destructive interference dips occur only in one spot within the room. It is not uncommon to completely eliminate their effect by moving the RSLM to a different location. Note that this does not eliminate the dips. We have simply moved away from them. Sometimes only a few inches are required. Do not attempt to correct this condition with equalization. If you encounter dips like this, take the following steps:

13 Cascade Model Twelve

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Contents Model Twelve Read First Upon completion of any service or repairsIi Cascade Model Twelve Table of Contents Placement Infinity Cascade Model TwelveUnpacking the Subwoofer Cascade Model TwelveControls and Connections Rear PanelSet Normal/LFE Switch to LFE Set Normal/LFE Switch to Normal ConnectionsPower On OperationR.A.B.O.S. Kit Includes Following Components What R.A.B.O.S. DoesR.A.B.O.S. Goal Performing R.A.B.O.S.TestsContents of the R.A.B.O.S. Test CD Rslm PlacementInitial System-Level Setting Setting the Subwoofer Test LevelTurn the system volume to minimum When you have completed this adjustment, press PauseLocating a test point What Does a Parametric Equalizer Do? Completing the Measurement TemplateFrequency WidthUsing the Width Selector Placement of the Bandwidth SelectorSkip to the Adjusting the R.A.B.O.S. Equalizersection on LevelWhat You Measure, What to Do Our example, you would enter 9 in the attenuation fieldExample 2. Two Response Peaks Example 3. Peak Adjacent to a DipExample 4. Narrow Response Example of two narrow dipsExample 6. Ideal Response Adjusting the R.A.B.O.S. EqualizerPosition Final System Balance Cascade Model Twelve R.A.B.O.S. ControlsMaintenance and Service Frequency Frequency Specifications Cascade Model Twelve

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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