NOTE: Generally the MAX setting (sometimes called “plus” or “double” bass) would not be used in systems with a capable subwoofer. Duplicating bass in LARGE speakers and the subwoofer can introduce room cancellation problems and make proper subwoofer level calibration difficult. If you need more bass output, a better option would be to use the normal YES setting and experiment with cor- ner placement of the subwoofer.
CB SPKR SELECT (1 speaker/2 speak-
ers): Use the 1 SPEAKER setting if your sys- tem has a single center back surround speaker. Use the 2 SPEAKERS setting if your system has 2 center back surround speakers. If your sys- tem does not have any center back speakers, select NONE on the previously described CENTER SPEAKER setting on this menu.
NOTE: Speaker configuration is a global set- ting for all surround modes and need only be done once.
To change a setting, place the highlight on the desired line using the UP/DOWN buttons and use the +/– buttons to toggle through the available settings. To return to the MAIN menu, press the ENTER button. Press the MENU key on the remote to cancel the display and re- turn to normal operation.
TEST TONE Menu
TEST TONE
LEFT: 0dB
CENTER: 0dB
RIGHT: 0dB
R SURROUND: 0dB
CENTER BACK: 0dB
L SURROUND: 0dB
SUBWOOFER: 0dB
ENT | KEY=MAIN MENU | UP KEY=up |
+/– | KEY=change | DWN KEY=down |
This menu uses pink noise test tones to set equal volume levels for all speakers (left front, cen- ter, right front, right surround, center back, left surround, and subwoofer) to ensure proper surround sound reproduction. Setting the output levels using the test procedure provides the most accurate adjustment so that digital sur- round sound material will be reproduced as it was intended and is a critical step in cali- brating the system.
NOTE: If you have configured your system to use two center back speakers, there will be an additional line in the menu, giving you the ability to independently adjust the CENTER BACK 1 and CENTER BACK 2 speakers.
To access this menu and perform the test tone calibration, you must be in one of the surround modes. To do this, press any of the MODE buttons except 2CH. Then, enter the ON-SCREEN DIS- PLAY menu system and select TEST TONE from the MAIN menu to reach this screen.
When you enter the TEST TONE menu, you will hear a test tone coming from the highlighted speaker. Highlight different speakers by moving the cursor to the desired line using the UP/ DOWN buttons. The test tone will shift accord- ingly to the selected speaker.
Seated in the normal listening location, shift the test tone to the various speakers. Using the one speaker as a reference, listen for any speak- ers that are noticeably louder or quieter. If so, adjust that speaker’s levels up or down (in 1dB increments) using the +/– buttons. Continue switching among the speakers and adjusting until all speakers are the same volume.
To return to the MAIN menu, press the EN- TER button. Press the MENU key on the remote to cancel the menu display and return to nor- mal operation.
Calibration with an SPL meter:
Calibrating the system with an SPL meter, rather than by ear, provides more precise results and improves the system’s performance significantly. Inexpensive SPL meters are widely available and the procedure is quick and easy.
Both Dolby and DTS specify a standard cali- bration level for all theaters to ensure that soundtracks can be played at the volume level intended by the director of the film. This ref- erence level should result in spoken dialog played at about 80 dB (a realistic level for nor- mal speech) with the loudest peaks in any single channel at about 105 dB.
This calibration can be done in a home the- ater using a sound pressure level (SPL) meter and the pink noise test tones described above. Set the meter to its SLOW response with C- weighting and hold it away from your body at your listening position (mounting the SPL meter on a camera tripod makes this easier). You can either point the SPL meter at each
speaker as it is being measured or leave the meter in a fixed position pointing at the ceil- ing.
Increase the master volume control on the RSX-1055 until the meter reads 75dB when playing the test tone through one of the front speakers. Then, use the individual channel ad- justments on the TEST TONE menu to adjust each of the individual speakers, including the subwoofer, to the same 75dB on the SPL meter.
NOTE: Due to meter weighting curves and room effects, the actual level of the subwoofer may be slightly higher than you measure. To compensate, Dolby suggests setting the sub- woofer several dB lower when calibrating with an SPL meter (i.e. set the subwoofer to read 72 dB on the meter instead of 75 dB). Avoid setting the subwoofer level too high. Exaggerated bass effects come at the expense of proper blending with the main speakers. If you can localize bass from the subwoofer, the subwoofer level is probably too high.
Remember the setting of the master volume con- trol used during this calibration. To play a Dolby Digital or DTS soundtrack at the reference vol- ume level, simply return to that volume setting. The idea of a reference volume setting to be used in every theater has its merits. However, many home theater listeners find this setting to be excessively loud. Let your own ears be the judge for deciding how loud to playback movie soundtracks. Regardless of your listen- ing levels, using an SPL meter to calibrate equal levels for all speakers in the system is well worth the effort.
DELAY SETUP Menu
DELAY SETUP
Dolby D Dolby
/DTS | Pro LogicII |
CENTER: 1ms | |
R SURROUND: 15ms | 25ms |
L SURROUND: 15ms | 25ms |
CNTR-BACK: 15ms | 25ms |
ENT KEY=MAIN MENU | UP KEY=up |
+/– KEY=change | DWN KEY=down |
This menu, which is reached from the MAIN menu, allows you to set the delay for individual speakers. This ensures that the sound from each speaker arrives simultaneously at the listening position, even when the speakers are not all placed at equal distances from the listener.
