VSX-AX4AVi-S VSX-AX2AV-S
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
Discover the benefits of registering your product online at www.pioneer.co.uk (www.pioneer-eur.com).

Operating Instructions

About the Advanced MCACC Application
The Advanced MCACC application software allows you to view graphs of the reverb characteristics of your listening environment on a PC. It works in the same way as Reverb View in EQ Professional of the receivers Manual MCACC menu (see page 40 in the receivers Operating Instructions), but the graphs are more precise and easier to understand by using a PC.
Requirements for using the application on your PC
Operating system must be Microsoft Windows XP, Windows 2000, Windows Millennium Edition, Windows 98 Second Edition, or Windows NT 4.0 (Service pack 6). CPU must be at least Pentium 3 / 300MHz or AMD K6 / 300MHz (or equivalent) with at least 128MB of memory, and your monitor must be able to display a minimum resolution of 800x600. An RS-232C port connector is necessary for graphical output. Refer to the PCs operating instructions and/or the PC manufacturer for more information on making the proper port settings.
Microsoft, Windows XP, Windows 2000, Windows Millennium Edition, Windows 98 and Windows NT are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.
Main features of the application
1. Displays 3D graphs of the reverb frequency characteristics of your room. You can choose to see these measurements both with and without the equalization performed by this receiver (before and after calibration). 2. Allows you to view graphs in a number of different formats. 3. Allows you to save the measured reverb characteristics data on your PC. 4. Allows you to make memos about the conditions in your room when you made the measurements. 5. Allows you to print graphs.
Things you can accomplish with this application
1. Advanced EQ Setup, which you can do with the receiver (see page 40 in the receivers Operating Instructions), allows you to choose the optimum time period for auto EQ setup. You can use the graphs displayed by the application as a guide in choosing the best time period for your room. For details, see How to Interpret the Graphs (page 14). 2. Skewed reverb frequency characteristics in your listening room can prevent you from enjoying an accurate sound field. The graphs displayed by this application are a powerful tool because they allow you to check these reverb frequency characteristics at a glance. You can also check the effectiveness of steps that you take to improve the acoustics of your listening room, for example, installing sound absorbent material. For details, see How to Interpret the Graphs (page 14).
Installing the Application
Install this application on your PC by using the downloaded installer.
You will find the installer in the folder that you specified when you downloaded the application.
Double click the PioneerAdvancedMCACC_e_ver_*_*.exe file
The number after ver in the filename is the version number of the installer.

Click Next.

Click Yes (if you agree to the terms of the License Agreement).
The destination selection screen of the installer appears.

Troubleshooting

If an error occurs when you double click and you are unable to proceed with the installation. 3
Installing the Application (Continued)
The application is installed in the indicated folder, and a shortcut icon is created on the desktop. To select a different folder to install the application, click Browse.

Click Finish.

The installation is complete.
Operations on the Receiver and Cable Connections
To display reverberation characteristics measured with the receiver on your PC, you need to connect the receiver to the PC.
Connect the receiver to your PC with a RS-232C cable.
Caution Before making or changing connections, switch off the power and disconnect the power cord from the power outlet. Plugging in components should be the last connection you make with your system.

VSX-AX4AVi

STANDBY/ON

PHASE CONTROL

DIGITAL PRECISION PROCESSING

MCACC POSITION

AUTO SURR/ STREAM DIRECT

HOME THX

STANDARD SURROUND

ADVANCED SURROUND

INPUT SELECTOR

SPEAKERS

AV PARAMETER PHONES (ST ) SETUP

(TUNE +) TUNER EDIT

MULTI ROOM & SOURCE/REC SEL CONTROL ON/OFF

VIDEO SELECT

SIGNAL SELECT

EXTENDED MODE

STEREO

MASTER VOLUME

VIDEO/GAME 2 INPUT

(ST +) RETURN

MCACC SETUP MIC

(TUNE )

DIGITAL IN

S-VIDEO

L AUDIO R
VSX-AX4AVi / VSX-AX2AV Notes The type of cable to use is a female-female cross cable. Different manufacturers use different names to refer to this type of cable. Sometimes it is called an interlink cable, and sometimes it is called a reverse cable. Refer to the following connection diagram and confirm the type of cable to be purchased.
Pin-out diagram of RS-232C cable to connect receiver and PC

Dsub 9-pin female

Operations on the Receiver and Cable Connections (Continued)
From the receivers Manual MCACC menu, select EQ Professional then Reverb Measurement to measure the reverb characteristics of your room.
(For details, see page 40 of the receivers Operating Instructions.) Reverberation characteristics can also be measured with Auto MCACC but it takes longer than with Reverb Measurement because other settings will be made prior to reverb measurement. Note Measurement using "Auto MCACC" is only available if you have selected ALL, ALL (Keep SPsetting) or Aco Cal EQ Pro. as the Auto Mode setting. To see the reverb characteristics of your listening area without the equalization performed by this receiver (before calibration), select EQ OFF:
3e1.Reverb Measurement MCACC: M1.MEMORY 1 Measure with Setting Start? EQ OFF [OK]

:Cancel

To see the reverb characteristics of your listening area with the equalization performed by this receiver (after calibration), select ALL or ALL (Keep SPsetting) as the Auto Mode setting in the Auto MCACC setup (see page 33 in the receivers operating instructions), then select EQ ON:

3e1.Reverb Measurement MCACC: M1.MEMORY 1 Measure with Setting Start? EQ ON [OK]
After measurement is complete, select Reverb Output PC in the on-screen display.
The message Start the MCACC application on your PC appears and the receiver enters transmission standby mode. It is ready to send data to your PC.
3e.EQ Professional 1.Reverb Measurement 2.Reverb View 3.Reverb Output PC 4.Advanced EQ Setup 3e3.Reverb Output PC
Start the MCACC application on your PC.

ENTER:Next

:Return
This completes the preparations for sending the measurement data to your PC. (To send the data, proceed to the next section Application Operations.) 6

Application Operations

This section explains operations that you do in the application, from receiving measurement data to displaying graphs and saving the data.
Receiving measurement data
Double click the application
shortcut icon on the PC desktop.
You can also start the application by selecting Program = Pioneer Corporation = Advanced MCACC from the Start menu. The application starts.
Select Receive under File on the menu bar.
Select the number of the COM port to which the RS-232C cable is connected and click OK.
If you do not know which COM port number to select, try selecting each port in turn, beginning with COM1.

COM port selection box

Data transmission starts. (It should finish in about 10 seconds.)
When reception finishes, graphs of the received data appear. Notes Refer the operating instructions of your PC for more information about COM port settings. In order to avoid malfunction, after the completion of the data transmission, unplug the RS-232C cable connecting your PC and the receiver.
If an error occurs when you select Receive and no data is sent. 7
Application Operations (Continued)
Graph displays (names and functions of parts)
When data is received, the first display to appear shows graphs for all channels (ALL display). This section explains the parts shown in ALL display and individual display.

ALL display

Individual display (Example: Front L channel)
1 Menu bar and menu icons
You can choose the following commands from the application menus. File Open Close Save Save measurement data in a file (see page 12). Save As Receive Print Preview Receives measurement data (see page 7). Prints the current individual graph. Displays a preview screen to show how the printed page will appear. Opens a file that has been saved on the PC (see page 13). Closes a file.

Other Amp Receives various data (see page 20). Parameters Exit Display Graph Demo Switch between 2D (two-dimensional graphs) and 3D (three-dimensional graphs). Exits the application.
Displays 3D graphs with rotating.*
* To finish, reselect and uncheck the box. Window Cascade Tile Arrange Cascades files.* Tiles files.* Arranges minimized icons.*
* Available when two or more files are open. Help Version Info Displays the version of the application.

2 Date and time

Display the date and time when the measurement data was transferred to the PC.
3 Channel and frequency switch buttons
Ch: Selects channel display mode (frequencies are displayed along graph depth axes). Freq: Selects frequency display mode (channels are displayed along graph depth axes).
4 All/individual display switch menu
Allows you to select All display or individual display (Front L, etc.).

5 Level [dB]

The level axis.

6 Time [msec]

The time axis.
7 Channel memo (available only when individual channels are shown)
Allows you to record a short memo about each channel.

8 Graph adjustment bar

Z: M: E: R: Increases or reduces the display unit of the Level [dB] scale. Moves the Level [dB] scale. Moves the viewpoint of 3D graphs vertically. (Cannot be changed for 2D graphs.) Moves the viewpoint of 3D graphs horizontally. (Cannot be changed for 2D graphs.)

9 Bar Graph

Changes the type of graph display. The display switches between the band graph and bar graph by pressing this button.
Moves the viewpoint of the time axis.

10 File memo

Allows you to record memos about conditions when the measurements were made.

11 Freq [Hz]/Channel

In channel display mode, it becomes the frequency axis. In frequency display mode, it becomes the channel axis.

12 Legend

Shows which colors in the graphs correspond to which channels or frequencies.
Saving graphs in data files
You can save measurement data received from the receiver on your PC. Data received at one time is saved in one file.
To save measure data, choose Save from the File menu.
If you have data that has already been saved and want to save it under a new name, choose Save As.
Check the save location, assign a file name, then click Save.
The data is saved in a CSV format file (the file extension is.csv).
When you are finished saving data, you should (using the receiver controls) press RETURN to exit the Reverb Output PC screen. This takes the receiver out of transmission standby mode. (See page 59 in the receivers Operating Instructions.) Note The CSV format file is often used to transfer data to applications such as databases and spreadsheets. You can use these applications to view the numeric values in your measurement data. However, if you use another application to edit the data and then save the file, the Advanced MCACC application may be unable to open the file.

Opening data files

You can open and display two or more data files to compare the data in the files.
Select Open from the File menu in the menu bar.
Select a file to display and click Open.
Graphs appear for the data saved in the file.

Exiting the application

Select Exit from the File menu.

The application closes.

How to Interpret the Graphs
As explained in Things you can accomplish with this application on page 2, you can use the graphs displayed in this application to choose the optimum time period for auto EQ setup with the receivers Advanced EQ Setup function, and to check the effectiveness of steps you take to improve the acoustics of your listening room.
How to interpret reverb graphs
The graphs show changes in microphone input level along a time axis, beginning from a state of quiet at time 0, when test tones begin to be output, and continuing while a constant level of sound is output from the speakers. If there is absolutely no reverberation in your room, the graph will look like figure A below. If there is reverberation, the graph will show a gradual accumulation of acoustic power, as shown in figure B.
Notes Due to an effect known as group delay, lower frequencies may take longer to be generated than higher frequencies (this is most obvious when comparing the frequencies around 0ms). If a graph extends beyond the display range, or almost fills it, you can change the display by using the Z (Zoom) control on the graph adjustment bar, adjusting the display range of the Level [dB] scale so that the whole graph is visible. Since channel level and speaker distance settings are displayed in the graphical output, it is best to make sure these settings (made in the Auto MCACC ALL or Channel Level setup) are adjusted properly before reverb measurement. Even in cases where there is a great difference in the output levels of different frequencies (the frequency characteristics of the room are poor), you can select ALL CH ADJUST (default) from the EQ Type setting in the receivers Auto MCACC setup to bring the frequency characteristics for each channel closer to a flat response. (For details, see pages 3334 in the receivers Operating Instructions.) It is usually not possible to calculate the equalization values employed by the receivers Acoustic Cal EQ function simply by viewing the graphs displayed on your PC. (This is because the automatic adjustments made by Acoustic Cal EQ function take account of factors such as equalization band interference and analytical filter characteristics, to achieve the optimum characteristic profile.)
How to Interpret the Graphs (Continued)

Deciding the time period for Advanced EQ Setup calibration
When you are using Acoustic Ca EQ calibration (instead of EQ Professional calibration), the input data from the microphone is analyzed at fixed time periods from 80 to 160 msec (the red area in Figure 1). Advanced EQ Setup allows you to choose a point (20 msec width) in the range from 0 to 80 msec (the blue area in Figure 1). Note You can specify the time period setting using the Advanced EQ Setup in the EQ Professional sub-menu (in the Manual MCACC menu). This setting is not required if youre satisfied with the results of the Auto MCACC setup (For details, see pages 3840 in the Operating Instructions).
Figure 1 Comparison of microphone data acquisition time periods

Level (dB)

Acoustic Cal EQ Professional calibration range (selectable points)
Acoustic Cal EQ calibration range (fixed)

Time (in ms)

To decide the time period for Advanced EQ Setup calibration, view the graphs of the measured reverb characteristics, and refer to the following three patterns.
Pattern 1: Different reverb characteristics for high and low frequencies
In rooms with reverb characteristics like those shown in Figure 2, lower frequencies often seem overly reverberant compared to higher frequencies (i.e. the room sounds boomy). If you calibrate the receiver using the Acoustic Cal EQ setting, data will be acquired in the 80 to 160 msec range (the red area of Figure 2). The analysis concludes that low frequencies are too loud and high frequencies are too soft, so it adjusts the equalization curve to strengthen high frequencies. In fact, however, the high frequencies may already be loud enough if measured within 40 msec, which is the time it takes for sounds coming directly from the speakers to reach your ears. Therefore, the Acoustic Cal EQ may result in a room where high frequencies sound shrill. In cases like this, setting the time period for Advanced EQ Setup to 20 to 40 msec (the blue area in Figure 2) to adjust for sounds coming directly from the speakers can flatten the frequency response for direct sounds (including initial reflections) and give a better-balanced sound field.

Figure 2

Low frequencies High frequencies Level (dB) Time period point to be selected Time (in ms)
Pattern 2: Different reverb characteristics for different channels
When different channels can have different reverb characteristics, as shown in Figure 3, it is not so effective to calibrate using the Acoustic Cal EQ. In general, a sound field with good acoustic positioning and movement is made up by sounds coming directly from the speakers (including initial reflections). This is the reason why you should use a calibration method that enables you to adjust direct sounds. In pattern2 cases, the Acoustic Cal EQ is not able to adjust frequency characteristics for sounds coming directly from the speakers. It acquires data in the 80 to 160 msec range (the red area in Figure 3.), so its adjustment ability is limited to sounds 80 msec or longer. In cases like this, you should use Advanced EQ Setup and set the time period to 20 to 40 msec (the blue area in Figure 3). This allows the characteristics of direct sounds to be balanced for each channel, giving an ideal sound field with good acoustic positioning and movement.

Figure 3

Front left channel Level (dB) Time period point to be selected Time (in ms) Front right channel
Pattern 3: Similar reverb characteristics for high and low frequencies and all channels
As shown in Figure 4, when the reverb characteristics for all channels are similar across all frequencies, your sound experience will probably not be adversely affected by reverberation. Instead of Advanced EQ Setup, we recommend that you use the Acoustic Cal EQ setting from the Auto MCACC option menu. This produces a total calibration for both direct sounds and reverberations, resulting in an ideal sound field. (See page 3334 in the receivers Operating Instructions.)

Figure 4

Select the Acoustic Cal EQ. Front left low frequencies Level (dB) Front right low frequencies Front left high frequencies Front right high frequencies
Notes If you are not sure which time period to specify in Advanced EQ Setup, start by trying 20 to 40 msec. If the graphs show an unusual reverb curve for a specific frequency, the cause may be some accidental variation. Instead of selecting 20 to 40 msec, try another time period. Another good method is to try various time periods in Advanced EQ Setup and select the one which sounds the best. Time period settings cannot be made on the PC. They can only be made on the on-screen display of the receiver, using the receivers Advanced EQ Setup function.
Checking steps to improve your rooms reverb characteristics
The reverb characteristics of your listening room graphs are evident from the graphs. For your reference, the following four examples explain how different types of rooms appear in the graphs.
Case 1: Graph rises to right across all frequencies
This is probably a room with a good deal of reverberation. If possible, we recommend that you try installing some sound absorbent material to create a deader acoustic space according to your preference.
Case 2: Specific channel shows unusual reverb characteristics
There is probably some object near the speaker which affects sound reproduction. If possible, we recommend that you try to reduce the influence of that object.

Case 3: Specific frequency shows unusual reverb characteristics
There is probably something in the room that affects the reproduction of that frequency. If possible, try to find an arrangement that reduces the effect.
Case 4: A specific channel is slow to start
This can happen when a speaker is unstable. If possible, we recommend that you try to stabilize the speaker stand, to bring the characteristics of that channel into line with the other channels. Note In all of these cases, you can use the ALL, ALL(Keep SP Setting) or Aco Cal EQ Pro. setting from the Auto MCACC option menu to automatically achieve the optimal calibration for the characteristics of your listening area. (See page 3334 of the receivers Operating Instructions.)
Displaying reverb characteristics after calibration
To display the graph of your listening areas reverb characteristics with the equalization performed by this receiver (after calibration), youll need to select the EQ ON option from the Reverb Measurement menu. Using this graph, you can confirm the effects of MCACC calibration for your listening area.
See page 5 for more on connecting the RS-232C cable.
Make sure you have completed the Auto MCACC setup from the receivers System Setup menu.
Use either the ALL or ALL (Keep SPsetting) Auto Mode option (Aco Cal EQ Pro. calibration is also performed in this case).
Select Reverb Output PC from the receivers EQ Professional menu.
When you receive and save this information on your PC, you will be able to see the graph of your listening areas reverb characteristics before calibration.
Select Reverb Measurement from the receivers EQ Professional menu and choose the EQ ON option as explained on page 40 of the receivers manual.
The EQ measurement will correspond with the currently selected MCACC preset (M16).
When you receive and save this information on your PC, you will be able to see the graph of your listening areas reverb characteristics with the equalization performed by this receiver (after calibration). The following graph shows the reverb measurement results after Aco Cal EQ Pro. calibration (with a time period setting of 20-40ms):
Notes Reverb Measurement calibration data will be lost if the power is switched off. The graphs displaying reverb measurements both before and after calibration are displayed in 2-D for comparison purposes. 19

Other Functions

In addition to the reverb frequency characteristics data measured by Advanced MCACC, you can receive setting data from the receiver on your PC to check the data, and save the setting results on your PC.
Receivable measurement data
1. 2. 3. 4. 5. Speaker Setting (Setting of the speaker system and crossover frequency) Channel Level (Setting of the speaker output level) Speaker Distance (Setting of the distance to the speaker) X-Curve (Tonal balance of the speaker system for movie soundtracks) Acoustic Cal EQ (Calibration of reverb characteristics in the listening environment)

Receiving and saving measurement data
Before starting the reception, check that the receiver is properly connected to your PC (page 5), you have selected the MCACC preset you wish to apply (page 28 of the receiver manual), and that the receiver enters the transmission standby mode by the operation of the receiver (page 6).
Select "Other Amp Parameters" = "Receive" under "File" on the menu bar.
Select the number of the COM port to which the RS-232C cable is connected and click "OK."
* If you dont know which port number to select, try selecting each port in turn, beginning with "COM1."
Note Refer to the operating instructions of your PC for more information about COM port settings. Data transmission starts. (It should finish in about 10 seconds.)
When reception finishes, the screen of the message "save as" appears. 20
Other Functions (Continued)
Check the save location, assign a file name, then click "Save."
The data is saved in a CSV format file (the file extension is ".csv").
Notes In order to avoid malfunction, after the completion of the data transmission, unplug the RS-232C cable connecting your PC and the receiver. You will still be able to receive the data saved in MCACC MEMORY (using the Other Amp Parameters option) when receiver power has been switched off.
Opening measurement data files
You can open the saved CSV format file by using other application software (ex. spreadsheet software) besides this application. The following information related to Speaker Setting, Channel Level, Speaker Distance and Acoustic Cal EQ will appear with the date the PC receives the data files.
Notes When using the Acoustic Cal EQ Auto Mode with the Auto MCACC setup, the results will only appear for the EQ Type you selected (All Ch Adjust or Front Ch Align). Also, if you have used the Manual MCACC EQ Adjust setup, the results for Custom 1 will appear (even if you have manually adjusted the results from the Auto MCACC setup). Note that results will not appear for Custom 2. Note that adjustments made for Standing Wave control will not appear.
Updating and Deleting the Application

Updating the application

A new installer is made available on the download site whenever the Advanced MCACC application is updated. You can download the new installer and use it to overwrite (update) the application on your PC. Note To check the version of your application, choose Help = Version Info from the menu bar. A window showing the version (Version 1.4, etc.) appears.
Double click the new downloaded installer
The Install Shield Wizard appears.

Click Repair.

Updating and Deleting the Application (Continued)

Click OK.

This completes the updating of the application.
If an error occurs when you click Repair and you are unable to proceed with the installation.

Deleting the application

You can use either of the following methods to uninstall (delete) the application from your PC.
Method 1: Delete from the Control Panel of the PC
From the Start menu, click Setting = Control Panel = Add/Remove Programs.
Method 2: Use the downloaded installer to delete the application

Click Remove.

Click Yes.
After you click Yes, the same screen may appear again. If it does, click Yes again.
This completes the deletion of the application.
As you use the Advanced MCACC application, errors can occur for a variety of reasons, such as incompatibilities with other applications and the current configuration of your PC. If an error occurs, refer to the troubleshooting points below. If the trouble cannot be rectified even after checking the points listed below, ask the Pioneer Service Center specified on your warranty card.
The application is unstable, or does not work normally
Cause: If your PC does not meet the requirements for using this application, the application can be unstable, very slow, or freeze up.
Check to be sure that your PC meets the requirements for using this application. (See page 2.) You cannot use this application unless your PC meets all of the requirements.
Advanced MCACC cannot be installed
Cause 1: An error message may appear if there are not enough system resources available.
If an error message like the one shown below appears, re-start the PC, then start the installer (PioneerAdvancedMCACC_e_ver_*_*.exe) with no other applications active.
Cause 2: Installation of Advanced MCACC may fail because of incompatibilities with other applications.
Try the following, in the order indicated. 1) If there are any other applications active, exit the other applications and try starting the installer (PioneerAdvancedMCACC_e_ver_*_*.exe) again. 2) If that does not work, try restarting your PC, and starting the installer (PioneerAdvancedMCACC_e_ver_*_*.exe) with no other applications active.
Troubleshooting (Continued)
Cannot send measurement data to PC
Cause 1: Random transmission errors sometimes occur.
Even if an error occurred on your first attempt, try sending the data again. Sometimes the transmission succeeds when you try again.
Cause 2: Messages like the following may appear if a transmission error occurs.

Try the following, in the order indicated. 1) In the setup screen of the receiver, check that Start the MCACC application on your PC is displayed. (This message indicates that the receiver is ready to send data to the PC.) 2) Check that the RS-232C cable is properly connected. (Be sure to switch off all components and disconnect their power cord from the power outlets before changing any cable connections.) 3) Exit any other active applications. 4) Check the COM port number. 5) Check the type of RS-232C cable to use is correct (page 5). 6) Restart the Advanced MCACC application. 7) Restart your PC.
Cause 3: The following message may appear and the data transmission may be not available.
Refer to the operation manual for PC or the application software using the COM port, and make the connecting COM port available for transmission.

Continue

Advanced MCACC cannot be updated
If an error message appears (like the one explained above in Cause 1) of Advanced MCACC cannot be installed (page 26), restart your PC and start the installer (PioneerAdvancedMCACC_e_ver_*_*.exe) with no other applications active.
Cause 2: Updating of Advanced MCACC may fail because of incompatibilities with other applications.
Cause 3: Under some PC configurations, updating may not succeed even if you click Repair.
Select Remove to delete the application, then try reinstalling the new version of the Advanced MCACC application.

Graphs cannot be printed

Cause: The ALL display mode graphs cannot be printed.
Print after selecting an individual channel or frequency graph.
Some functions in application operation cannot be used
Cause: You may not properly use the application software not corresponding to your receiver.
Check the model number of your receiver and use the application software corresponding to it.
The receiver causes a malfunction when it is connected to the PC with a RS-232C cable
Cause: When the receiver is connected to your PC with a RS-232C cable, the power of the receiver may be automatically switched on when you operate the PC.
Unplug the cable when not in use.
EQ response in the graph (following calibration) does not appear flat
Cause 1: There are cases where the graph does not appear flat (even when selecting ALL CH ADJUST in the Auto MCACC Setup)
This is due to adjustments made to compensate for room characteristics to achieve optimal sound.
Cause 2: Areas of the graph may appear identical (before and after) when there is little or no adjustment needed. Cause 3: The graph may appear to have shifted vertically when comparing before and after measurements.
Adjustments made with the Manual MCACC setup do not change the graph
Cause: Despite level adjustments being made, the filters used for analysis may not display these adjustments in the graphical output.
However, these adjustments are taken this into account by the filters dedicated to overall system calibration.

Lower frequencies do not seem to have been calibrated for SMALL speakers
Cause 1: Low frequencies used in bass management (the subwoofer channel) will not change for speakers that have been specified as SMALL in the configuration. Cause 2: Calibration is performed, but due to your speakers' low frequency limitations, no measurable sound is output for display.
Published by Pioneer Corporation. Copyright 2005 Pioneer Corporation. All rights reserved.

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