Bryston SP 1 Series Instructions Manual page 21

3. Move the cursor to the speaker(s) you want to change the
level for using the arrow keys (L, C, R, RS, LS, SUB). Hit
'SELECT'. Now you can adjust the Level for the selected
speaker using the arrow buttons.
4. Hit 'SELECT' when finished, and repeat Step 3 to change the
Level Trim for any of the other speakers.
Setting the THX Subwoofer Limiter or "Bass Peak
Level Manager"
1. Enter the main menu by pressing on one of the menu
buttons. Move the cursor to "OS". Hit 'Select' - You are now
in the Other Settings (Optical/THX) Menu.
2. Move the cursor to 'BPLM'. Hit Select. [BPLM=Bass Peak
level Manager]
You will see the following screen.
3. Hit 'SELECT' and you will see the adjustment screen picture
below appear, and you will hear a low level Pink Noise
signal coming from your subwoofer and/or large speakers.
Now you can adjust the value of the subwoofer limiter (-40 to
0 dB). Slowly increase the level by pressing the ">" button
(display counting up from -40) until you hear overload/
distortion/bottoming/popping from your subwoofer(s). When
you do, reduce the value shown by 1dB and Hit 'SELECT' to
save the setting.You can always return to this menu to make
further adjustments if needed. For more information on the
BLPM see the THX section in the appendix.
Figure 14: 'Other Settings' Menu
Figure 15: BPLM Routine Query
Figure 16: BPLM Adjustment Screen
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