User manual PIONEER VSX-LX50

[. . . ] VSX-LX50 AUDIO/VIDEO MULTI-CHANNEL RECEIVER Discover the benefits of registering your product online at http://www. pioneer. co. uk (or http://www. pioneer. eu). Operating Instructions IMPORTANT CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. CAUTION: TO PREVENT THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. D3-4-2-1-1_En-A Replacement and mounting of an AC plug on the power supply cord of this unit should be performed only by qualified service personnel. IMPORTANT: THE MOULDED PLUG This appliance is supplied with a moulded three pin mains plug for your safety and convenience. [. . . ] low frequencies ­ Depending on your room, you may find that lower frequencies seem overly reverberant compared to higher frequencies (i. e. This may result in a skewed frequency analysis if the measurement is done too late. Level Low frequencies High frequencies How to interpret the graphical output The graph shows decibels on the vertical axis and time (in milliseconds) on the horizontal axis. A straight line indicates a flat-response room (no reverb), whereas a sloping line indicates the presence of reverberation when outputting test tones. The sloping line will eventually flatten out when the reverberant sound stabilizes (this usually takes about 100 ms or so). By analyzing the graph, you should be able to see how your room is responding to certain frequencies. Differences in channel level and speaker distance are taken into account automatically (compensation is provided for comparison purposes), and the frequency measurements can be examined both with and without the equalization performed by this receiver. 2 Acoustic Cal. EQ Pro calibration range Standard Acoustic Cal. EQ calibration range 0 80 160 Time (in msec. ) · Reverb characteristics for different channels ­ Reverb characteristics can be somewhat different for each channel. Since this difference increases as the sound is influenced by the various room characteristics, it is often better to capture a frequency analysis early on for smoother mixing of channel frequencies/sounds. Level Left surround Right Surround Setting Professional Acoustic Calibration EQ according to your room characteristics Using the manual setup, you can set the time period at which the frequency response is analyzed, pinpointing the time that is best for system calibration with your particular room characteristics. The graph below shows the difference between standard acoustic calibration and professional calibration (the gray circles represent the point at which the microphone captures the sound for frequency analysis). Acoustic Cal. EQ Pro calibration range Standard Acoustic Cal. EQ calibration range 0 80 160 Time (in msec. ) If your room isn't affected by the factors above, it is often not necessary to make a 30 ms to 50 ms setting. Later time settings may provide a more detailed sound experience with your speaker system. It is best to try and see what works best for your particular room. Note 1 This system allows you to customize your system calibration with the help of a graphical output that can be displayed on-screen. 2 Note that due to an effect known as `group delay', lower frequencies will take longer to be generated than higher frequencies (this is most obvious when comparing the frequencies at 0 ms). This initial slope is not a problem (i. e. excessive reverb) with your listening room. 43 En 08 The System Setup menu Note that changing the room (for example, moving furniture or paintings) will affect the calibration results. In such cases, you should recalibrate your system. 4 If you selected `Reverb View', you can check the reverb characteristics for each channel. Press RETURN when you're done. 3e2. Reverb View M1 : EQ OFF Ch Fq [ [ L] 63Hz ] Using Professional Acoustic Calibration EQ 1 Select `EQ Professional' then press ENTER. 3. Manual MCACC a. Fine Ch Level b. Fine SP Distance c. Standing Wave d. EQ Adjust e. EQ Professional 3e. EQ Professional 1. Reverb Measurement 2. Reverb View 3. Advanced EQ Setup dB 0 80 160ms :Return :Return ENTER:Next :Return 2 Select an option and press ENTER. · Reverb Measurement ­ Use this to measure the reverb characteristics of your room. · Reverb View ­ You can check the reverb measurements made for specified frequency ranges in each channel. · Advanced EQ Setup ­ Use this to select the time period that will be used for frequency adjustment and calibration, based on the reverb measurement of your listening area. [. . . ] 30 Hz to 15 kHz ± 1 dB Antenna Input . 75 unbalanced AM Tuner Section Frequency Range . 531 kHz to 1602 kHz (9 kHz step) Sensitivity (IHF, Loop antenna) . Loop antenna · The above specifications are applicable when the power supply is 230 V. Miscellaneous Power Requirements. [. . . ]