Infinity Model Twelve manual R.A.B.O.S. Kit Includes Following Components, What R.A.B.O.S. Does

Page 8

ROOM ADAPTIVE BASS OPTIMIZATION SYSTEM

Infinity’s R.A.B.O.S. is a simple-to-use, yet sophisticated, low-frequency calibration system. It is designed to work in conjunction with the Cascade Model Twelve self-amplified subwoofer. The subwoofer contains a parametric equalizer that you will adjust as indicated by the R.A.B.O.S. test results. Following these instructions, you will optimize the subwoofer’s response characteristics to complement the sub’s environment. This will dramatically improve the sound of your system. The optimization process takes less than 30 minutes.

The R.A.B.O.S. Kit Includes

the Following Components:

•Specialized Sound-Level Meter

•Test CD

•Instructions

•Measurement Templates

•Width Selector

•Adjustment “Key”

What R.A.B.O.S. Does

The Test CD provides specially designed signals you will use while performing measurements. The sound-level meter provided is used to “acquire” the information needed for adjustments. You will create a response plot on the Measurement Template. Using the Width Selector, you will then determine the appropriate equalizer settings. The “Key” is used to adjust the parametric equalizer built into the Cascade Model Twelve. After adjustment, the test sequence is repeated to confirm your settings.

The R.A.B.O.S. Goal

It is a fact of audio that what we hear at low frequencies is determined as much or more by the listening room than by the loudspeaker itself. Placement of the loudspeakers and listeners and the acoustical characteristics of the room surfaces are all important determinants of bass quantity and quality. In most practical situations, there is little that can be done about this, except for patient trial-and-error repositioning of the loudspeakers and listeners. Usually, the practical constraints of a living space and the impracticality of massive acoustical treatment mean that equalization is the only practical solution.

Professional sound engineers routinely employ sophisticated measurement systems and equalizers to optimize speakers to the installation. This has never been practical for the home audiophile. This is why R.A.B.O.S. was created. R.A.B.O.S. enables you to identify the dominant low-frequency response characteristic of your room. Once you know the problem, R.A.B.O.S. provides the tools needed to optimize the low-frequency characteristics of the speakers to the room they are in, exactly as the professional sound engineers do it.

Performing R.A.B.O.S.Tests

These instructions assume you have already installed your subwoofer according to the information provided in the Owner’s Guide. It is also assumed that all equipment in your entertainment system is interconnected properly and is in good operating condition.

Preparations

Before beginning R.A.B.O.S. tests, please check the following:

•Set R.A.B.O.S. switch ª to On position.

•Make sure all three R.A.B.O.S. controls, ‚, ⁄ and ¤, on the subwoofer are turned fully clockwise.

•Make sure the loudness contour (if any) on your receiver/ processor/preamp is turned off.

•Set the tone controls (Bass and Treble) to their center or

flat positions.

•Bypass all surround and effects features of your receiver/ processor/preamp or set to Stereo Bypass.

•If you are using a multichannel surround processor or receiver, make sure all bass-management features are properly set. The Audio channels should all be set to “Small” or “High-Pass” and the subwoofer set to “On.”

You must have a CD player in the system. A CD player remote control is quite convenient but not essential.

For best results, it is recommended that all major furnishings are in place and that all doors and windows in the listening area are in their normal positions. That is, if you normally listen to music with all doors closed, then this is how they should be during this procedure.

Try to minimize ambient noise while running tests. Turn off all major appliances and any air conditioning or furnace fans. These can create significant subsonic noise that may be barely perceptible but which can wreak havoc on low-frequency measurements.

Critical information is highlighted with this mark:

Helpful hints are marked with this symbol:

5 Cascade Model Twelve

Page 7 Page 9
Image 8
Page 7 Page 9
Contents Model Twelve Ii Cascade Model Twelve Upon completion of any service or repairsRead First 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 dipsPosition Adjusting the R.A.B.O.S. EqualizerExample 6. Ideal Response 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.
Top Page Image Contents