User manual MERIDIAN G61RSL DIGITAL SURROUND INSTALLATION GUIDE

[. . . ] G61R Digital Surround Controller Installation Guide ii Preface Important safety instructions · Read the instructions. · Install only in accordance with the manufacturer's instructions. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE. This apparatus has been designed with Class 1 construction and must be connected to a mains socket outlet with a protective earthing connection (the third grounding pin). [. . . ] · Use > and < to move between each of the speakers in the layout. For example: Press More for help dramatic effect on the overall sound. · Press > to proceed to the next calibration stage. Left ìî Phase ïñ óòô + öõú Speaker size These tests allow you to determine the bass handling capability of subwoofers and large analogue speakers. Once set, the digital surround controller will limit the bass level to protect the speakers from potential damage. On starting the test the speaker sizes are set to zero to avoid the possibility of damaging the speakers, and the display shows: Press More for help Calibrating the system Sizes set to zero ìî ïñ óòô öõú The display then shows the first large analogue speaker; for example: Press More for help Left ìî Size ïñ 0 óòô öõú · Press A or V to adjust the size value for the speaker until it just begins to distort distinctly, and then reduce the value by one. · Press > or < to move between each of the speakers to be adjusted. This is the last test in the calibration procedure; see To complete the calibration procedure, page 28. Calibrating the system Using the Sine/Sub/Sens controls This section explains how to use the Sine/Sub/Sens controls to check for room resonances, adjust the subwoofer crossover frequency, or adjust the sensitivity of the analogue sources. The display shows the current crossover frequency: To display the Sine/Sub/Sens controls · If necessary, unlock the digital surround controller as described in · Press Xovr- or Xovr+ to decrease or increase the crossover frequency. Configuration Wizard, page 17. · Select a source and press More until the bottom line of the display shows: CD Sine Xover -Xover+ 85Hz -Sens. + For THX loudspeaker systems you should not adjust these settings; they should be left at 80Hz. You may prefer, however, to lower the crossover frequency for music if the main speakers have good bass handling down to, say, 50Hz. · Press Sine/Sub/Sens. The bottom line of the display shows the Sine/Sub/Sens controls: Sinewave sweep test The G61R includes a sinewave signal test, to help you set the subwoofer crossover frequencies, or check for room resonances. To avoid possible damage to the speakers the volume is reduced to 50 on entering the test. Subwoofer crossover frequency The G61R Digital Surround Controller allows the crossover frequency for any subwoofers which you have to be adjusted between 30 and 150Hz. The crossover can be set independently for Music, Logic, and 5. 1 Movie layouts. To adjust the subwoofer crossover frequency · Select a source, then display the Sine/Sub/Sens controls as described above. Warning: This test is very loud. Bass protection is turned off during this test, and very loud low-frequency signals may damage the speakers. To use the sinewave sweep test · Select a source, then display the Sine/Sub/Sens controls as described above. · Press Sine to turn on the sinewave signal. Calibrating the system The display shows: To change the volume · Use the volume keys in the usual way. CD Chan Sine óòô öõú 80. 0Hz Sound Exit To change the input · Press Sound. You can select between the following inputs: Option Input Sine Noise Silent Description The current input. You can change the test signal using the menu keys, as described in the following sections. To change the sweep rate · Press A or V to change the sweep rate and direction, as follows: Display Description Alternatively you can switch between inputs using the menu keys on the MSR+. CD Chan óòô >> öõú 88. 5Hz Sound Exit Fast sweep up. Fast sweep down. CD Chan óòô > öõú 81. 5Hz Sound Exit CD Chan Pause óòô öõú 80. 0Hz Sound Exit CD Chan óòô < öõú 78. 5Hz Sound Exit CD Chan óòô << öõú 70. 5Hz Sound Exit Calibrating the system Setting up sources This section explains how to use the Sine/Sub/Sens controls to adjust the sensitivity of the analogue sources. To adjust the sensitivity of a source To obtain the best signal-to-noise ratio for each analogue source you can adjust its sensitivity to give the highest level that does not produce clipping. · Select the source you want to adjust, with loud source material playing. [. . . ] Otherwise, it is recommended that you unplug and reconnect the plugs at least once a year. To change the mains fuse · Remove the mains connector, and pull out the drawer above the power input to access the fuse. Before replacing a blown fuse, it is best to ascertain the cause of the failure. This should be replaced by a fuse of the same rating. Tr o u b l e s h o o t i n g Tr o u b l e s h o o t i n g Service and guarantee Service The Meridian G Series of hi-fi components has been carefully designed to give years of untroubled service. [. . . ]