Example of Bass Focus Setting

1After entering corrections for the front (left and right) speakers in STEP 15, the time difference is 1.5 ms for both front-left and front-right speakers.

1.5ms1.5ms

∗

2After entering corrections for the left (front and rear) speakers in STEP 15, the time difference becomes 3.0 ms** for the front left speaker and 1.5 ms for the left rear speaker.

**Because the time difference was already set to 1.5 ms for the front left speaker in STEP 1, the additional correction in STEP 15 makes the time difference of the front left speaker 3.0 ms.

Time Correction

Setting item: TIME CORRECTION

Setting contents: TIME DN/UP/FRONT-LEFT/FRONT-RIGHT/ REAR-LEFT/REAR-RIGHT

Before performing the following procedures, refer to “About the Time Correction” (page 22).

Selecting the speaker:

Select the speaker among 3 (FRONT-LEFT) through

6(REAR-RIGHT).

Adjusting the time correction value:

Press 1 (TIME ;DN) or 2 (TIME UP:) to adjust the time correction value (0.0 to 9.9).

Adjusting the Built-in Crossover

Setting item: CROSSOVER

Setting contents: LPF DN / UP / HPF DN / UP

The High and Low Pass Filters on this unit can be adjusted to suit your personal taste.

LPF (Setting the Low Pass Filter):

Press 1 (LPF ;DN) or 2 (LPF UP:) to adjust LPF.

FLAT (OFF) ↔ 80Hz ↔ 120Hz ↔ 160Hz

Outputs all frequencies lower than that selected according to your preference.

3.0ms

1.5ms 1.5ms

1.5ms

1.5ms

∗

(Only available when using the subwoofer output from this unit.)

•When the subwoofer output of this unit is turned OFF, LPF and phase are deactivated.

HPF (Setting the High Pass Filter):

Press 3 (HPF ;DN) or 4 (HPF UP:) to adjust HPF.

FLAT (OFF) ↔ 80Hz ↔ 120Hz ↔ 160Hz

Outputs all frequencies higher than that selected according to your preference.

Tips

*Subwoofer speaker

Delay (turn the rotary encoder) the audio signal to the front (left and right) speakers to make the apparent position of the subwoofer to be at the front. In doing this, the apparent position between the front (left and right) speakers and subwoofer will appear equal to the driver. After performing above, you can change the positions of left and right speakers by delaying the time.

•If HPF, LPF, bass control and treble control are all set to ON, depending on the bass control and treble control settings, you may not be able to reinforce the sound effect.

•Except when the HPF and LPF is turned OFF, the subwoofer is in monaural mode.

Subwoofer On and Off

1 Press SOURCE/POWER.

The main menu is displayed.

2 Press 4 (A.PROC).

The A.PROC (Audio processor) list screen is displayed.

3 Turn the Rotary encoder to select “SUBWOOFER.”

4 Press the Function button to select your desired setting.

OFF:

Subwoofer output is off.

0°:

Subwoofer output is on, and the phase is 0°.

180°:

Subwoofer output is on, and the phase is 180°.

23-EN

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Alpine IVA-D901 owner manual Subwoofer On and Off, Time Correction, Adjusting the Built-in Crossover, 23-EN
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IVA-D901 specifications

The Alpine IVA-D901 is a highly regarded in-dash multimedia receiver designed to elevate the in-car entertainment experience. With its sleek design and advanced technology features, it caters to the needs of modern drivers and passengers alike. The unit supports a wide range of media formats, allowing users to enjoy their favorite music and videos on the go.

One of the standout features of the IVA-D901 is its 7-inch motorized touchscreen display. This high-resolution LCD screen offers impressive clarity and color, making it easy to navigate through menus and control media playback. The touchscreen is highly responsive, providing an intuitive interface that enhances user experience. Additionally, the motorized function allows the screen to elegantly retract when not in use, contributing to its aesthetic appeal.

The IVA-D901 stands out with its extensive connectivity options. It supports both Bluetooth and USB connections, facilitating hands-free phone calls and wireless audio streaming. This makes it incredibly convenient for users who wish to maintain focus on the road while still enjoying their favorite tracks. Moreover, the unit is compatible with various external devices, enabling seamless integration with smartphones and tablets.

Another notable characteristic of the IVA-D901 is its versatility in media playback. It is designed to play DVDs, CDs, and a variety of video files, including MP4 and DIVX. The built-in DVD player enhances the multimedia experience, allowing passengers to enjoy movies during road trips. Additionally, the receiver also supports AM/FM radio, providing traditional entertainment options.

Users also benefit from the advanced tuning capabilities of the IVA-D901. Its built-in DSP (Digital Signal Processing) allows for customizable sound settings, ensuring that audio can be tailored to individual preferences. This feature creates a more immersive listening experience, as adjustments can be made based on the acoustics of the vehicle.

In terms of expansion, the Alpine IVA-D901 is equipped with multiple preamp outputs, allowing for the easy addition of amplifiers or subwoofers. This flexibility enables users to enhance their sound system to achieve the desired audio performance.

To sum up, the Alpine IVA-D901 is a powerful multimedia receiver that combines stunning visuals, extensive connectivity, and high-quality audio capabilities. It’s a perfect choice for those who seek luxury and functionality in their in-car entertainment setup.
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