Speaker Configuration; Speaker Levels - NAD T175 - MANUAL 2 Owner's Manual

OPERATION
USING THE T 175 – SETUP MENU

SPEAKER CONFIGURATION

Every surround-sound system requires "bass-management" to direct low-
frequency content from any or all channels to the speakers best able to
reproduce it. For this function to operate correctly, it is important that you
correctly identify your speakers' capabilities. We use the terms "Small" and
"Large" (and "Off") but note that physical size may be irrelevant.
• A "Small" speaker is any model, regardless of physical size, that lacks
significant deep-bass response, that is, below about 200 Hz.
• A "Large" speaker is any full-range model; that is, one with deep-bass
response
• An "Off" speaker is one that is not present in your system. For example,
you might not have any surround-back speakers installed; in that case,
you would set the 'Surround' setup item to "Off".
Depending on the relationship between speakers, the possible selections for
each speaker are as follows:
Front L/R Center Surround L/R
LARGE
LARGE
SMALL
OFF
LARGE
LARGE SMALL
SMALL
OFF
LARGE
OFF
SMALL
OFF
SMALL
SMALL
OFF
SMALL
SMALL
OFF
OFF
The Speaker Configuration is "global"; that is, it remains in force with all inputs
and in all listening modes. However, speaker settings are part of the T 175' s
Preset system. Consequently, multiple speaker settings can be stored for easy
recall as different types of recordings or listening modes require.
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Speaker Configuration can be managed and adjusted by pressing a
combination of
"Large, " "Small" or "Off" as your subsystem's speakers require.
The 'Back' speakers can either be one or two speakers. Set 'Back' to either 1
or 2 speakers as per availability. Set 'Subwoofer' to "On" or "Off, " selecting "On"
only if you have a subwoofer connected to the T 175's SUBW1 or SUBW2
output jack.
ENHANCED BASS
When the subwoofer is set to ON and "Front" is set to "Large", Enhanced
Bass is also available. Normally, with speakers set to "Large" the subwoofer
is not active. The Enhanced Bass option allows full range operation of
the speakers with the additional bass contribution of the subwoofer. This
feature is particularly useful when one wants to experience maximum
bass output. Please note that due to acoustic cancellation effects, the bass
response may be uneven when using this setting
You can set Subwoofer to "On" even with "Large" front speakers, in which
case bass content from any channels set to "Small" will be routed to both
the subwoofer and to the front speakers; LFE-channel signal will pass only
to the sub. In most subwoofer-equipped systems, setting front speakers to
"Small" is usually the better option.
All the speakers' low frequency content can be directly adjusted within the
range 40Hz to 200Hz.
NOTE
The configurations set forth at 'Speaker Setup' are carried over whenever
Subwoofer
Back
it is enabled during A/V Preset setting. Please see also the section 'AV
1/2
Presets' for reference.
LARGE
SMALL

SPEAKER LEVELS

OFF
LARGE
SMALL
OFF
OFF
LARGE
SMALL
OFF
LARGE ON or OFF
SMALL
OFF
OFF
LARGE
Adjusting the relative balance of your system' s loudspeakers ensures that
SMALL
surround-sound recordings, whether music or film, will present the balance of
OFF
effects, music, and dialog that the artists intended. Additionally, if your system
LARGE
incorporates a subwoofer it establishes a correct relationship between the
SMALL
volume of the subwoofer and the other speakers, and thus of low-frequencies
OFF
(bass) to other sonic elements.
OFF
SMALL
USING AN SPL METER
OFF
It is quite practical to perform the T 175 level setup routines "by ear, " and
OFF
careful work will produce acceptably accurate results. However, the use
ON
SMALL
of an inexpensive sound-pressure level (SPL) meter, such as Radio Shack
OFF
part number 33-2050, makes this task easier, more accurate and more
OFF
repeatable. Ownership of such a meter could prove a valuable audio tool.
and then keys. Set 'Front, ' 'Center, ' and 'Surround' to