NAD L70 Car Video System User Manual


 
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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”, “LARGE”, “NONE”, (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 80 Hz.
•A “LARGE” speaker is any full-range model, that is, one with deep-bass response
•A “NONE” 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 <SURR:> setup item to “NONE.”
•A “OFF” speaker is one that may be present such as a subwoofer but set to off for in the SPEAKER
CONFIGURATION setup menu such as <SUB: OFF>.
SETTING SPEAKER CONFIGURATION
From the OSD’s <MAIN MENU> screen, select the <SPEAKER CONFIGURATION> line using the HTR L70
remote’s , and “ENTER” keys. Using the keys, set <FRONT:> to “LARGE” or “SMALL” as your
main-front speakers require according to the guidelines noted above. Similarly, set <CENTER>, and
<SURR> to “LARGE,” “SMALL,” or “NONE” as your system’s loudspeakers require. Set <SUB> to “ON”
or “OFF.”
NOTE
The SPEAKER CONFIGURATION is “global”; that is, it remains in force with all inputs and in all
SURROUND MODEs.
•You can set Subwoofer to “ON” even with “LARGE” front speakers. In such cases, both subwoofer
and front speaker will receive the LFE-channel signal. In the case where the front speakers are set to
“SMALL” the LFE-channel signal will be routed to subwoofer but not to the front speakers; LFE-
channel signal will pass only to the subwoofer. In most subwoofer-equipped systems, setting front
speakers to “SMALL” is usually the better option.
SURROUND MODE
From the OSD’s <MAIN MENU> screen, select the <SURROUND MODE> line using the HTR L70 remote’s
, and “Enter” keys. Using the and keys you can select mode variations, and adjust
various parameters, depending on the current SURROUND MODE. For more information, see “About the
L70’s SURROUND MODEs,” below.
LEVEL TRIM (TEST) SETUP
Adjusting the relative balance of your system’s loudspeakers ensures that surround-sound recordings, whether
music or film, will present the balance of effects, music, and dialog that the artists intended. Additionally, if
your system incorporates a subwoofer it establishes a correct relationship between the volume of the
subwoofer and the other speakers, and thus of low-frequencies (bass) to other sonic elements.
SPEAKER CONFIGURATION
Setup
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