Bryston SP3, Руководство пользователя

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SP3 PREAMP / PROCESSOR
SubWoofer Setup Page 1 of 4
SP3 Subwoofer and Speaker Setup
21-June-2012, Bryston Ltd., Stan Bleszynski
Added footnote 6 on page 3.
1. Introduction.
Subwoofer output carries a combined (sum) contents of bass extracted from all the other
speaker channels, for those speakers that are declared as “Small”, and also includes the
Low-Frequency Effect contents (LFE) present optionally only in the multi-channel
stream (labelled as 5.1, 6.1 or 7.1).
Bass contents is defined as the portion of the audio spectrum of frequencies from all the
channels that are below the cross-over frequency (default is 80Hz), added up to the LFE
channel (if present). The cross-over frequency can be modified in the SOURCE
SETUP

CROSSOVER Fc submenu, separately for the front speakers, center, surround
and back. The LFE channel cannot be altered or cut off
1
and the cross-over frequency
setup or Xtra Bass setup does not affect it.
Bass contents carried through those channels where the speakers are declared as “Large”
is not re-routed through the Subwoofer. Instead it is output through those speakers
directly.
If Subwoofer is declared as not present, then the bass contents from all the channels will
be re-routed through the large speakers only (if there are any), otherwise it will be cut-
off.
SP3 provides a single subwoofer channel through back panel RCA socket paralleled with
an XLR socket. Optionally, it can also output the subwoofer channel through the Aux R
socket.
2
2. Speaker Configuration.
Speaker configuration involves declaring the size such as Large
3
, Small or None (see
SPEAKR SIZE menu) for the five categories of speakers: Front (Left and Right), Center,
Surround (side surround), Back (rear surround) and Subwoofer (in SUBWOOFER sub-
menu).
1
Except if subwoofer is declared as not present!
2
This is not normally enabled. The default Aux selection is Aux-L= down-mixed stereo Left, Aux-
R=down-mixed stereo Right (L
0
,R
0
). To enable subwoofer through Aux-R, change SYSTEM
SETUP

MISCELLANEOUS

AUX parameter.
3
A speaker is considered “Large” if it can reproduce bass down to 30Hz or lower. Anything else should be
entered as “Small”.
APPENDIX G
SUB-WOOFER SETUP