Audio Design Associates Cinema Reference Mach II PTM-8150 - Manual (Page 48)

Page 47
The Cinema Reference Mach II is permits you to set the subwoofer to best match the speakers in your
system. While the THX crossover frequency point (roll off point) is 80Hz, some speakers my operate
better with a slightly lower roll off and others with a slightly higher roll off. For example, ribbon speak-
ers typically operate best at frequencies above 180Hz. ADA suggests consulting with the manufac-
turer of your home theater speakers prior to altering this setting. While the Cinema Reference Mach
II’s factory default is the THX 80Hz setting, the range of the crossover is Off or 60Hz to 220Hz, in
increments of 10Hz.
When setting the crossover, remember that it will affect only those speakers that are set to Small, as
their bass information (below the crossover setting) will be summed with the LFE (“.1” effects channel)
and be directed to the subwoofer.
To set the Subwoofer Crossover:
1 Turn the Mode knob clockwise until the display’s second line reads SETUP MENU and then
press the Mode knob.
2 Turn the Mode knob clockwise until the display’s second line reads PRO SETUP and then
press the Mode knob.
3 Turn the Mode knob clockwise one click so that the display’s second line reads SW CROSS-
OVER and press the Mode knob.
4 To turn the crossover completely off, turn the Mode knob counterclockwise until the display
reads FILTER OFF. Otherwise, turn the Mode knob until the display reads the desired
crossover frequency point.
5 To proceed with other Pro Setup options, press the Mode button. To completely exit the setup
menu, turn the Volume knob.
Subwoofer Crossover Point Setup