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Rotary encoder

SOURCE/POWER

X-OVER Adjustment

1 Check that defeat mode is off.

2 Press SOURCE/POWER.

The main menu is displayed.

3 Press 4 (A.PROC).

A.PROC (Audio processor) list display appears.

4 Turn the Rotary encoder to select “X-OVER.” 5 Press 1 (SETUP L/R) or 2 (SETUP L+R).

X-OVER adjustment display appears.

L/R: Different adjustment values can be set for the left and right channels.

L+R: Sets the same adjustment values for the left and right channels.

6 Turn the Rotary encoder to select the speaker to be set.

7 Press the function button to adjust the selected speaker.

FREQ. ;DN/UP:: Adjust the H.P.F. or L.P.F. cutoff

frequency.

The adjustable bands differ according to the channel (speaker).

SLOPE ;DN/UP:: Adjust the H.P.F. or L.P.F. slope.

LEVEL ;DN/UP:: Adjust the level.

8 Repeat steps 6 and 7 to adjust other channels.

9 Press 7 (RETURN) to return to the previous display.

Performing Time Correction Manually (TCR)/ Swithing the Phase

Because of the particular conditions inside the vehicle, there can be major differences in the distances between the various speakers and the listening position. It is possible to calculate the optimum correction values and eliminate the time error at the listening position yourself using this function. You can also use this function to switch the phase.

1 Check that Defeat mode is off.

2 Sit in the listening position (the driver’s seat, for example) and measure the distance (in meters) between your head and the various speakers.

3 Calculate the difference in distance between the farthest speaker and the other speakers.

L = (distance of farthest speaker)

–(distance of other speakers)

4 Divide the distances calculated for the different speakers by the speed of sound (343 m/s temperature 20°C).

This value is the time correction value for the various speakers.

Concrete examples

Calculating the time correction value for the front left speaker on the diagram below.

Conditions:

Distance between farthest speaker and listening position: 2.25 m (88-3/4")

Distance between front left speaker and listening position:

0.5m (20")

Calculation:

L = 2.25 m (88-3/4") – 0.5 m (20")= 1.75 m (68-3/4") Compensation time = 1.75 ÷ 343 x 1000 = 5.1 (ms)

In other words, setting the time correction value for the front left speaker to 5.1 (ms) sets a virtual distance matching the distance to the farthest speaker.

5.1ms 0.5m

2.25m

•When the speaker is set to the “OFF” mode, X-OVER for that speaker cannot be set. Refer to “Setting the Speakers” (page 45).

•Check the playback frequencies of the connected speakers before adjusting.

The sound is uneven because the distance between the listening position and the different speakers is different. The difference in the distance between the front left and rear right speakers is 1.75 meters (68-3/4").

Time correction eliminates the difference between the time required for the sound from the different speakers to reach the listening position.

Setting the time correction of the front left speaker to 5.1 ms makes it possible to coordinate the distance from the listening position to the speaker.

46-EN

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Image 48
Alpine IVA-D900 owner manual Over Adjustment, Performing Time Correction Manually TCR/ Swithing the Phase, 46-EN
Page 47 Page 49

IVA-D900 specifications

The Alpine IVA-D900 is a sophisticated multimedia receiver that seamlessly blends advanced technology with user-friendly features, designed to elevate your in-car entertainment experience. With a sleek and stylish design, this unit is not only visually appealing but also packed with functionality tailored for modern drivers.

One of the standout features of the IVA-D900 is its large 7-inch motorized touchscreen display. This high-resolution LCD screen provides vibrant visuals, making navigation through menus and multimedia content intuitive and enjoyable. The motorized aspect not only saves space when not in use but also adds a touch of modern sophistication to your vehicle's interior.

Connectivity is a key component of the IVA-D900, as it comes equipped with various options, including Bluetooth technology. This allows for hands-free calling and audio streaming, ensuring you can stay connected without compromising safety. Additionally, the unit features USB and aux inputs, enabling you to easily connect your smartphone or external devices.

The IVA-D900 is compatible with a range of digital media formats, offering support for CDs, DVDs, MP3s, and WMAs. This flexibility means that whether you prefer to listen to your favorite playlists or enjoy a movie during long trips, the receiver can cater to your multimedia needs. The integrated DVD player ensures that passengers can enjoy entertainment while on the road.

To enhance the audio experience, the Alpine IVA-D900 features a robust equalizer and sound customization options. Users can adjust bass, treble, and balance to suit their audio preferences. Furthermore, it is compatible with advanced audio formats, ensuring that your music sounds crisp and clear, no matter the genre.

Safety is also a priority with the IVA-D900, as it includes support for rear-view cameras, providing an added layer of security while reversing. The system can integrate with various navigation options, offering turn-by-turn directions that are essential for long-distance travel or exploring new areas.

In summary, the Alpine IVA-D900 is an exceptional multimedia receiver that combines cutting-edge technology with ease of use. Its large touchscreen, robust connectivity options, and powerful audio features make it a prime choice for anyone looking to upgrade their in-car entertainment system. With safety features and multimedia versatility, the IVA-D900 is not just a receiver; it's a gateway to an enhanced driving experience.
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