Settings/Adjustments

Crossover network

The PXI-H990 is equipped with an active dividing network allowing the bands to be split before amplification by the power amplifier.

Because of this, there is no need for a passive network between the speakers and amplifiers and the amplifiers are fully independent, thus eliminating the problem of interference and making it possible to achieve the optimum acoustic space by dividing the playback frequencies in a way suited to the capacities of the speakers.

This adjustment requires special knowledge and experience. Should problems arise, please see your authorized Alpine dealer.

Adjust the high pass filter (H.P.F.) and low pass filter (L.P.F.) and set the slope (filter response attenuation slope) for the different bands.

Make the adjustments according to the playable frequency ranges and frequency responses of the connected speakers.

 

Cutoff

 

 

 

Frequency Adjustment Bandwidth

Slope Adjustment

 

(1/6 Octave Steps)

 

 

 

H.P.F.

L.P.F.

H.P.F.

L.P.F.

FRONT

20Hz18kHz

22Hz20kHz

6/12/18/24/30dB/

6/12/18/24/30dB/

 

 

 

Filter OFF

Filter OFF

FRONT TW

1kHz18kHz

1.1kHz20kHz

6/12/18/24/30dB

6/12/18/24/30dB/

 

 

 

 

Filter OFF

FRONT MID

20Hz18kHz

22Hz20kHz

6/12/18/24/30dB/

6/12/18/24/30dB/

 

 

 

Filter OFF

Filter OFF

FRONT WF

20Hz18kHz

22Hz20kHz

6/12/18/24/30dB/

6/12/18/24/30dB/

 

 

 

Filter OFF

Filter OFF

REAR

20Hz18kHz

22Hz20kHz

6/12/18/24/30dB/

6/12/18/24/30dB/

 

 

 

Filter OFF

Filter OFF

REAR TW

1kHz18kHz

1.1kHz20kHz

6/12/18/24/30dB

6/12/18/24/30dB/

 

 

 

 

Filter OFF

REAR WF

20Hz18kHz

22Hz20kHz

6/12/18/24/30dB/

6/12/18/24/30dB/

 

 

 

Filter OFF

Filter OFF

FRONT C

20Hz18kHz

22Hz20kHz

6/12/18/24/30dB/

6/12/18/24/30dB/

 

 

 

Filter OFF

Filter OFF

FRONT C TW

1kHz18kHz

1.1kHz20kHz

6/12/18/24/30dB

6/12/18/24/30dB/

 

 

 

 

Filter OFF

FRONT C WF

20Hz18kHz

22Hz20kHz

6/12/18/24/30dB/

6/12/18/24/30dB/

 

 

 

Filter OFF

Filter OFF

REAR C

20Hz18kHz

22Hz20kHz

6/12/18/24/30dB/

6/12/18/24/30dB/

 

 

 

Filter OFF

Filter OFF

REAR C TW

1kHz18kHz

1.1kHz20kHz

6/12/18/24/30dB

6/12/18/24/30dB/

 

 

 

 

Filter OFF

REAR C WF

20Hz18kHz

22Hz20kHz

6/12/18/24/30dB/

6/12/18/24/30dB/

 

 

 

Filter OFF

Filter OFF

SUBWOOFER

20Hz160Hz

22Hz180Hz

6/12/18/24/30dB/

6/12/18/24/30dB

 

 

 

Filter OFF

 

40-EN

 

 

 

 

Page 44
Image 44
Alpine PXI-H990 owner manual Crossover network, 40-EN

PXI-H990 specifications

The Alpine PXI-H990 is a state-of-the-art embedded computing platform designed to meet the demanding requirements of modern testing and measurement applications. As part of the PXI (PCI eXtensions for Instrumentation) standard, the PXI-H990 incorporates modularity, high-performance, and scalability, making it an ideal solution for engineers and researchers in various industries including telecommunications, aerospace, and automotive.

One of the standout features of the Alpine PXI-H990 is its powerful processing capabilities. It utilizes a multi-core processor architecture that ensures efficient data handling and processing, crucial for real-time applications. The device supports high-speed data acquisition, helping engineers achieve accurate measurements and reduce testing time.

The PXI-H990 comes equipped with flexible I/O options that allow users to customize the platform according to specific application needs. Its slots support a wide range of modules, including those for signal generation, analysis, and data logging. This versatility ensures that systems can be tailored for diverse tasks without the need for extensive hardware changes.

The architecture of the PXI-H990 allows for high-speed communications between modules, enabled by the PXI backplane. This interconnectivity facilitates synchronized operation, enhancing timing accuracy, which is especially important in applications such as radar and communication systems testing. Furthermore, the device’s built-in synchronization capabilities allow for precise control over multiple instruments and measurements.

On the connectivity front, the PXI-H990 supports various interfaces, including USB, Ethernet, and Serial. This ensures seamless integration with other equipment and facilitates easy data transfer. The device also comes with advanced software support, enabling users to leverage powerful programming environments for automation, scripting, and analysis.

Additionally, the Alpine PXI-H990 is designed with durability and reliability in mind. It features rugged construction, ensuring it can withstand challenging operational environments. This reliability is further enhanced by built-in cooling systems that maintain optimal operating temperatures, even during intensive data processing tasks.

In conclusion, the Alpine PXI-H990 stands out for its combination of high performance, modularity, and flexibility. Its advanced processing capabilities, extensive I/O options, and robust architecture make it a leading choice for engineers and organizations looking for reliable embedded solutions in testing and measurement applications.