ROTEL RSP-1570 User Manual

Page 43

English

RSP-1570 Surround Sound Processor

English

RSP-1570 Surround Sound Processor

ADVANCED:

Speaker conﬁguration is generally a global setting for

all surround modes and need only be done once. However, for special
circumstances, the processor provides the option of setting the speaker
conﬁguration independently for each of four surround modes. Select the
ADVANCED line on the menu and press ENTER to go to the ADVANCED
SPEAKER SETUP menu described in the following section.

To change a setting on the SPEAKER SETUP menu, 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/OSD button on the remote to cancel
the display and return to normal operation.

Advanced Speaker Setup

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In most cases, the standard speaker conﬁguration described above is
a global setting and can be used for all surround modes. However, the
processor provides the capability to customize these settings for four
different surround modes: Dolby, DTS, Stereo, and DSP. For example,
you could set up the Dolby and DTS modes for 5.1 channel sound,
while the Stereo mode changes to a 2-speaker setup with or without a
subwoofer. In addition, the ADVANCED SPEAKER SETUP allows you to
select a customized high-pass crossover frequency for the front, center,
surround, and surround back speakers.

Note: In most systems, the default settings on this menu will

provide the most predictable results and most users will not

need to change any settings. You should fully understand bass

management and have a speciﬁc reason for needing a custom

conﬁguration before changing these settings. Otherwise, skip to

the following topic, SUBWOOFER SETUP.

The available settings on the ADVANCED SPEAKER SETUP menu are as
follows:

SPEAKER (front/center/surround/center back/subwoofer):

Select

the set of speakers to be conﬁgured with custom settings.

CROSSOVER (40Hz/60Hz/80Hz/100Hz/120Hz/150Hz/200Hz):
Typically, the RSP-1570 uses a single master setting for the high-pass
and low-pass crossover point between all SMALL speakers and the
subwoofer. This master crossover point is set on the SUBWOOFER SETUP
menu described in the following section. When you ﬁrst access the
ADVANCED SPEAKER SETUP menu, the current master crossover point
will be shown on this line. Change the value of this line only if you want
the current speaker to have a different crossover point. For example, if
your master crossover is set to 80Hz, but you want your front speakers to
crossover to the subwoofer at 60Hz, you would select 60Hz for the front
speakers on this line. This setting ONLY affects redirected bass and does
not affect the LFE channel in any way. The OFF setting (available only for
the subwoofer) sends a full-range signal to your subwoofer so that you
can use its built-in low-pass ﬁlter.

Note: When a speaker is set to LARGE on the SPEAKER SETUP

menu or on this menu, the crossover setting is not available since,

by deﬁnition, a LARGE speaker plays full-range with no bass

redirection to the subwoofer and no crossover. Likewise, the OFF

setting for the subwoofer crossover is not available for SMALL

speakers, since SMALL means that the speaker will redirect its bass

below a given crossover point to the subwoofer. In addition, the

CROSSOVER setting is not available for the MULTI INPUT.

DOLBY (large/small/none):

Sets the current speaker (shown in the

ﬁrst line) to LARGE, SMALL, or NONE, overriding the master setting from
the SPEAKER SETUP menu. This setting will ONLY take effect with Dolby
Digital or Dolby Pro Logic II decoding.

DTS (large/small/none):

The same options described for Dolby

above, except these settings ONLY take effect with DTS and DTS Neo:6
decoding.

STEREO (large/small/none):

The same options described for Dolby

above, except these settings ONLY take effect in STEREO surround mode.

DSP (large/small/none):

The same options described for Dolby

above, except these settings ONLY take effect with any of the DSP MUSIC
surround modes.

Note: When the front speakers are set to use the master crossover

frequency on the Advanced Speaker Setup menu, the surround

mode speciﬁc “large/small/none” settings are not available for

the other speakers. These speakers will use the setting determined

in the basic Speaker Setup menu.

Subwoofer Setup

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The SUBWOOFER SETUP menu allows selection of the master subwoofer
crossover frequency and independent adjustment of subwoofer level for
each surround mode.

CROSSOVER (40Hz/60Hz/80Hz/100Hz/120Hz/150Hz/200Hz/
OFF):

This setting speciﬁes a master low-pass ﬁlter for the subwoofer

and a corresponding high-pass ﬁlter for all SMALL speakers in the system
at the selected frequency. To adjust the crossover frequency, highlight
the CROSSOVER line using the UP/DOWN buttons. Then, use the
+/– buttons to choose the master crossover point. The 80Hz or 100Hz
crossover points are the most common in home theater systems and
should be used unless you have a speciﬁc reason to choose a different
crossover point based on your speciﬁc speakers.

The OFF setting sends a full-range signal to your subwoofer so that you
can use its built-in low-pass ﬁlter. With the OFF setting, a 100Hz high-
pass ﬁlter is activated for all SMALL speakers in the system.

Note: The master crossover point can be overridden with a

custom crossover frequency for the front, center, surround, or

surround back speakers in the ADVANCED SPEAKER SETUP menu;

however, in most systems the single master crossover point should

work well

DOLBY DIGITAL:
DOLBY PLIIx:

DTS:

STEREO:
DSP:

MULTI INPUT:

These six lines allow you to override the master subwoofer level setting as
determined on the TEST TONE menu (see next section) for each speciﬁc
surround mode. When going to the SUBWOOFER SETUP menu from the
MAIN menu, the current surround mode is automatically highlighted.
Use the +/– buttons to adjust the subwoofer level for the current surround
mode. The options are OFF (which turns off the subwoofer for that mode)
and a range of adjustments from -9dB to +9dB and MAX (+10dB). A
setting of 0dB means that the speciﬁed surround mode will use the master
subwoofer level. Any other setting is an offset to the master setting. For
example, an adjustment of -2dB for a particular surround mode means
that the subwoofer level will be 2dB quieter than the master subwoofer
level when that surround mode is selected. Use these subwoofer level
settings to adjust the relative bass output of various surround modes.
Changing the master subwoofer level will increase or decrease the level
for all surround modes.

Note: Only the current surround mode can be adjusted on this

menu. You will need to change surround modes using the front

panel or remote buttons to adjust a different mode.

We recommend starting with the settings for all surround modes at the
default 0dB setting during the test tone calibration of the system and
for a period of familiarization after that. As you listen to a variety of
source material over time, you may notice that certain surround modes
consistently produce too much or too little bass from the subwoofer. If
so, then use these menu settings to customize each surround mode. In
general, if the master subwoofer level is set properly (i.e. not too loud),
individual settings for each surround mode should not be necessary.

Note: In Dolby Digital and DTS recordings, the LFE channel

is used to produce spectacular low bass effects, placing

considerable demands on your subwoofer system. If you hear

distortion or other signs of distress from your subwoofer at loud

listening levels, you may consider reducing the subwoofer level for

the Dolby Digital and/or DTS surround modes. In other surround

modes, there is no LFE channel and the subwoofer will only

reproduce redirected bass from the other channels, which is not as

likely to tax the subwoofer.

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.

Test Tone

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This menu uses ﬁltered pink noise test tones to set equal volume levels
for all speakers (left front, center, 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 surround sound material will
be reproduced as it was intended and is a critical 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 accordingly 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 speakers
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 are the same volume.

To return to the MAIN menu, press the ENTER 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 (Sound Pressure Level) 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 calibration level for all theaters
to ensure that soundtracks can be played at the volume level intended by
the director of the ﬁlm. This reference 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 RSP-1570’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 reading on an SPL meter.

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