Speaker Configuration - Bryston SP3 Owner's Manual

APPENDIX G
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 F
separately for the front speakers, center, surround and back. The LFE channel cannot be altered or cut
1
off 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. Speaker Configuration.

Speaker configuration involves declaring the size such as Large
menu) for the five categories of speakers: Front (Left and Right), Center, Surround (side surround),
Back (rear surround) and Subwoofer (in SUBWOOFER sub-menu).
Volume level corrections (from -12 to +12dB) can be entered for each speaker individually in the
SPEAKR LEVEL screen.
configuration is in SUBWOOFER submenu.
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 ,R ). To enable subwoofer through Aux-R, change SYSTEM SETUPMISCELLANEOUSAUX parameter.
0 0
3
A speaker is considered "Large" if it can reproduce bass down to 30Hz or lower. Anything else should be entered as
"Small".
4
SPEAKR LEVEL correction values are normally entered during or after the "Pink Noise" test, which is or will be
described in a separate document. In most situations only the subwoofer level correction need to be applied specifically for
a given subwoofer efficiency and gain.
5
Cut-off frequency may need be changed only if the speakers are unusually small with higher bass cut-off than 80Hz, or if
they are medium size with lower than 80Hz cutoff but significantly higher than 30Hz (30Hz would be "Large").
SP3 Subwoofer & Speaker Setup
(Draft doc 7-Feb-2012, Bryston Ltd., Stan Bleszynski)
Source Setup Screen
4
Cross-over frequencies can be modified in CROSSOVER
Subwoofer setup screen (Small speakers)
Sub-Woofer Setup Guide
SP3 PREAMP / PROCESSOR
SUB-WOOFER SETUP
3
, Small or None (see SPEAKR SIZE
Pg. 1 of 2
submenu,
c
2
5
and subwoofer