Manual Rotel RSX-1056 (page 41 of 46) (English)

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English

Test Tone

TEST TONE

LEFT:+ 1dB

CENTER:- 1dB

RIGHT:+ 2dB

R SURROUND:+ 5dB

R CTR BACK:+ 2dB

L CTR BACK:+ 2dB

L SURROUND:+ 4dB

SUBWOOFER:+ 9dB

MAIN MENU

This menu uses filtered pink noise test tones

to set equal volume levels for all speakers (left

front, center, right front, right surround, cen-

ter back, left surround, and subwoofer) to en-

sure proper surround sound reproduction.

Setting the output levels using the test proce-

dure provides the most accurate adjustment

so that digital surround sound material will be

reproduced as it was intended and is a criti-

cal step in calibrating 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 can be in any surround mode

except BYPASS with any input except the MULTI

INPUT. Enter the OSD 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/OSD button on

the remote to cancel the menu display and

return to normal 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 a realistic level for normal speech

with the loudest peaks in any single channel

at about 105dB. The RSX-1056’s test tones

are generated at a precise level (-30dBFs)

relative to the loudest possible digitally recorded

sound. At the Dolby or DTS reference level,

these test tones should produce a 75dB read-

ing on an SPL meter.

Set the meter to its 70dB dial setting with SLOW

response and C-weighting, held away from

your body at your listening position (mount-

ing the SPL meter on a camera tripod makes

this easier). You can point the SPL meter at each

speaker as it is being measured; however,

positioning the meter in a fixed position pointing

at the ceiling is easier and probably produces

more consistent results.

Increase the master volume control on the

RSX-1056 until the meter reads 75dB (+5dB

on the meter scale) when playing the test tone

through one of the front speakers. Then, use

the individual channel adjustments 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 com-

pensate, Dolby suggests setting the subwoofer

several dB lower when calibrating with an SPL

meter (i.e. set the subwoofer to read 72dB on

the meter instead of 75dB). Ultimately, the

proper subwoofer level must be determined

by personal taste and some listeners prefer to

set it above 75dB for film soundtracks. Exag-

gerated bass effects come at the expense of

proper blending with the main speakers and

place stress on the subwoofer and its ampli-

fier. If you can localize bass from the sub-

woofer, the subwoofer level may be too high.

Music can be useful for fine-tuning the sub-

woofer level as excessive bass is readily ap-

parent. The proper setting will generally work

well for music and movie soundtracks.

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.

Note that most 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 and adjust the

master volume control accordingly. Regard-

less of your listening levels, using an SPL meter

to calibrate equal levels for all speakers in the

system is strongly recommended.

Delay Setup

DELAY SETUP

LEFT: 12ft 3.6m

CENTER: 11ft 3.3m

RIGHT: 11ft 3.3m

R SURROUND: 6ft 1.8m

R CTR BACK: 8ft 2.4m

L CTR BACK: 9ft 2.7m

L SURROUND: 5ft 1.5m

SUBWOOFER: 5ft 1.5m

MAIN MENU

The DELAY SETUP 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. Increase the delay to speakers located

closer to the seating area and decrease the

delay to speakers located farther from the

seating area.

The RSX-1056 makes setting the delay time

for each speaker very easy. Simply measure

the distance (in feet or meters) from your seating

position to each speaker in your system. Set

the measured distance in the line for each

speaker. The menu provides a line for each

speaker configured in your system and pro-

vides a range of settings up to 99 feet (30

meters) in 1 foot (0.3 m) increments with each

increment equivalent to an additional delay

of 1ms.

To change a setting, place the highlight on the

desired line using the UP/DOWN buttons and

use the +/– buttons to increase or decrease

the delay setting. To return to the MAIN menu,

press the ENTER button. Press the MENU/OSD

button on the remote to cancel the display and

return to normal operation.

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Rotel RSX-1056 Manual

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