Alpine PXA-H701 owner manual Over

Page 17

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The PXA-H701 is equipped with an active crossover allowing the frequency bands to be split before amplification. Because of this, there is no need for a passive network between the speakers and amplifiers. This makes the amplifiers fully independent, eliminating the problem of interference. This also makes it possible to achieve the optimum acoustic space by dividing the playback frequencies in a way suited to the speaker’s response.

This adjustment requires sufficient knowledge and experience. If you have problems, we suggest you have the adjustment made by your store authorized of 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 range

Slope adjustment

 

(1/6 octave steps)

 

 

 

 

 

 

 

 

H.P.F.

L.P.F.

H.P.F.

L.P.F.

 

 

 

 

 

Front 1

1kHz –

1.1kHz –

6/12/18/

6/12/18/

(Front speaker 1)

24/30dB/

18kHz

20kHz

24/30dB

Select TWEETER

Filter OFF

 

 

 

 

 

 

 

 

Front 1

20Hz –

22Hz –

6/12/18/

6/12/18/

(Front speaker 1)

24/30dB/

24/30dB/

18kHz

20kHz

Select FULL RANGE

Filter OFF

Filter OFF

 

 

 

 

 

 

 

Front 2

20Hz –

22Hz –

6/12/18/

6/12/18/

24/30dB/

24/30dB/

(Front speaker 2)

18kHz

20kHz

Filter OFF

Filter OFF

 

 

 

Rear

20Hz –

22Hz –

6/12/18/

6/12/18/

24/30dB/

24/30dB/

(Rear speaker)

18kHz

20kHz

Filter OFF

Filter OFF

 

 

 

 

 

 

 

 

Center*

20Hz –

22Hz –

6/12/18/

6/12/18/

24/30dB/

24/30dB/

(Center speaker)

18kHz

20kHz

Filter OFF

Filter OFF

 

 

 

Sub. W

20Hz –

22Hz –

6/12/18/

6/12/18/

24/30dB/

24/30dB

(Subwoofer)

180Hz

200Hz

Filter OFF

 

 

 

 

 

 

 

 

 

 

*If center is set as subwoofer, the adjustment range changes to the range of subwoofer.

Signals with these frequencies output

Slope OFF

 

 

Slope adjustment

 

 

 

 

 

 

20Hz

10kHz

 

 

 

 

H.P.F. cutoff frequency

L.P.F. cutoff frequency

 

The H.P.F. setting cannot be the same as or exceed the L.P.F. setting for that channel.

The crossover network is a filter that divides specific frequency bands.

The high pass filter is a filter that cuts frequencies below a certain frequency (bass frequencies) and lets through treble frequencies.

The low pass filter is a filter that cuts frequencies above a certain frequency (treble frequencies) and lets through bass frequencies.

The slope is a value expressing the attenuation of the signal in decibels when the frequency is increased or decreased by one octave.

The higher the slope value, the steeper the slope.

If the slope is set to “OFF”, the signal does not pass through the filter, so there is no effect.

In order to protect the speakers, if Tweeter is selected in Front 1, there is no filter OFF (slope OFF) setting for H.P.F.

For the same reason, the subwoofer low pass filter cannot be turned off (the slope cannot be set to “OFF”.)

Tweeters may be damaged if low frequency signals are input to them.

15-EN

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Contents PXA-H701 Page Before using Contents Still Hear Outside Noise While Driving Maintenance TemperatureInstallation Location About indicators Turning the power on and offSetting the speakers Basic OperationSwitching the input Using with Ai-NET connectionsAdjusting the input level Adjusting the volume, balance, fader and subwooferYES no Automatic AdjustmentsError Concrete examples Settings/AdjustmentsR / P H a S E L F 1 R R Bass Focus Settings/AdjustmentsTime difference Table Example of Steps 4 and 5 SettingAdjustable frequencies Settings/AdjustmentsGraphic equalizer adjustments Q P F r o n t L N D 3 5 k H z + 7 d B Parametric equalizer adjustments14-EN Over 16-EN Over adjustmentHint for adjusting the low range Hint for adjusting the subwooferHints for adjusting the high range MX settings 19-EN Using the Pro Logic II mode Using Dolby SurroundAdjustment procedure for Dolby Surround Adjusting the speaker levels Speaker setupMixing bass sound to the rear channel Adjusting the level for individual speakers manualAdjusting the acoustic image Using Dolby SurroundAdjusting the DVD level Achieving powerful high volume soundConvenient Functions Linear PCM settingMX mode setting Ai-NET connection Display settingsCalling out stored values Storing settings in the memoryDefeat mode Press the Disp button to select the desired display mode Switching the display modeDo not Splice Into Electrical Cables Installation and ConnectionsFuse PrecautionsWiring Connections To prevent external noise from entering the audio system AccessoriesInstallation using Velcro fastener InstallationMounting the control unit Sold Separately Mounting other unitsFlush Mounting the control unit Velcro Fastener Mounting Using the Mounting Screws SuppliedMounting the base unit Terminal specifications Connect to Basic Connections DiagramExamples of system expansion Please observe the following when using Fiber Optic Cable38-EN PXA-H701 + Head Unit + Video Deck etc. + External Amplifier 40-EN Terminology InformationCase of difficulty OthersDimensions SpecificationsComponents Parts name Quantity 1setPage Garantie Limitée Limited Warranty
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