Infinity Model Twelve manual Initial System-Level Setting, Setting the Subwoofer Test Level

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Initial System-Level Setting

The following steps will set the playback level of the system to the correct level for all tests that follow.

Turn the system volume to minimum.

Cue the R.A.B.O.S. Test CD to Track 2 and press Pause II. This track will produce band-limited pink noise in both the left and right channels.

Press Play ›. With the RSLM positioned as described above, increase the system volume until the RSLM display indicates –10dB. See Figure 4.

Figure 4. RSLM indicating the correct system level to begin tests (–10dB)

When you have completed this adjustment, press Pause II.

Setting the Subwoofer Test Level

Each of the following test tracks is about one minute long. This is normally much longer than required. Press Pause II or advance to the next test as soon as you are ready.

This step will set the subwoofer levels for measurement purposes. The objective is to scale the subwoofer’s output to make full use of the RSLM indicator range. Scaling is optimum when a 0dB reading is observed on the highest peak without triggering the over-range indication. Later, you will rebalance the subwoofer to the main speakers.

The three R.A.B.O.S. controls, ‚, ⁄ and ¤, should be set to fully clockwise positions, and all measurements should be conducted with their level controls in this position. Confirm this

setting before you begin this test.The Level control § should be set to the mid position.

Cue Track 3 and Pause II. Track 3 continuously steps through all subwoofer test tones for approximately 1 minute. Each tone will play just long enough for the RSLM to give a stable reading.

To get accurate measurements, it is necessary to play the subwoofer quite loud. The 0dB indication is about 94dB. At this level, frequencies below 100Hz can cause doors, windows, furnishings and other objects in the room to vibrate. This frequently results in clearly audible buzzes and/or rattles that come and go as each test tone plays. Strong buzzes not only sound bad; they can cause measurement errors. If you hear a buzz

or rattle during this test, it is highly recommended that you locate the source and eliminate its effects. This is actually a valuable room-diagnostic tool.

Press Play ›. As Track 3 plays, watch the RSLM carefully. Watch for peak readings. The peak reading may be no more than a brief flash. Readjust the subwoofer’s Level control § until the peak level observed is 0dB without triggering the over-range indication. See Figure 5.

Figure 5. Adjusting the subwoofer levels for a 0dB peak

When finished, press Pause II.

Performing Low-Frequency Measurements

Read the following instructions fully before beginning tests.

For the following steps, you will need a Measurement Template and a pencil.

Figure 6. R.A.B.O.S. Measurement Template

7 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 Unpacking the Subwoofer PlacementInfinity Cascade Model Twelve 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. Goal R.A.B.O.S. Kit Includes Following ComponentsWhat R.A.B.O.S. Does Performing R.A.B.O.S.TestsContents of the R.A.B.O.S. Test CD Rslm PlacementTurn the system volume to minimum Initial System-Level SettingSetting the Subwoofer Test Level When you have completed this adjustment, press PauseLocating a test point Frequency What Does a Parametric Equalizer Do?Completing the Measurement Template WidthUsing the Width Selector Placement of the Bandwidth SelectorWhat You Measure, What to Do Skip to the Adjusting the R.A.B.O.S. Equalizersection onLevel 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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