AudioControl Architect 560, Руководство пользователя

Страница: 21 / 32

ARCHITECT
Model 560
Model 735
Model 760
Installer’s Guide
™
Changing The PFM
Modules
Close-up view of PFM Modules
Note: The modules are not
directional so it does not matter
which way they are inserted.
PFM rolloff curve
The equalization part is handled by The Architect Models 735
& 760’s 45Hz control. The prevention part is handled by The
Architect Programmable Frequency Match filter circuit. While it
may seem surprising, actually cutting off some of the lowest bass
will make the bass sound cleaner, punchier and even louder.
AudioControl’s Programmable Frequency Match circuit is an
adjustable subsonic filter which cuts off low frequencies. The
PFM filter’s cut-off point is adjustable via a small resistor module
inside The Architect. When you receive your unit, it is pro-
grammed with a 40Hz bass cut-off. Depending on the application,
you may want to change the filter frequency. Don’t let ego get in
the way and set the PFM too low because somebody thinks that a
6” woofer should be able to play down to 20Hz.
The following standard module frequencies are available from
AudioControl: 20, 25, 35, 40, 45, 50, 60, 70, 80, 90, 100, 120,
130, 150, 200, and several higher frequencies going up to 6000Hz
which probably aren’t applicable except in very special circum-
stances. Each module’s frequency is determined by 6 resistors
inside a 14-pin DIP network. See Appendix B for details on
building your own modules.
17