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• Stereo, Bridged Mono, and Parallel Mono
If the two subwoofer channels are to carry different or independent program material, as in stereo
or bridged mono, set the SF-1 for “Stereo” operation. Use this also for parallel mono operation from
a single program signal source. For stereo, bridged mono, or parallel mono operation, set the
amplifier mode switch to “STEREO,” “BRIDGED,” or “PARALLEL,” respectively, and SW2 as
follows:
Position 1 ON
Position 2 OFF
Position 3 OFF
Position 4 ON
Position 9 ON if bridged mono, OFF otherwise
Position 10 OFF if bridged mono, ON otherwise
Positions 5 through 8
Next determine whether you wish to bypass the low-pass filtering on either channel for use with a full-range
speaker system. This will determine the settings of positions 5 through 8 of DIP switch SW2.
• Channel 1: bypass or engage low-pass?
If you’re connecting a full-range speaker to Channel 1, bypass its low-pass filtering. If you’re
connecting it to a subwoofer, engage the filtering. Typical cinema subwoofers are an exception, the
low pass filter should be bypassed in this application, as cinema processors typically perform this
function.
Position 5 ON if bypassed, OFF if engaged
Position 6 OFF if bypassed, ON if engaged
• Channel 2: bypass or engage low-pass?
Likewise, if you’re connecting a full-range speaker to Channel 2, bypass its low-pass filtering, and
if you’re connecting it to a subwoofer, engage the filtering. Typical cinema subwoofers are an
exception, the low pass filter should be bypassed in this application, as cinema processors typically
perform this function.
Position 7 ON if bypassed, OFF if engaged
Position 8 OFF if bypassed, ON if engaged
CAUTION: On DIP switch SW2, the switch pairs, i.e., positions 1 and 2, 3 and 4, 5 and 6, 7 and 8, and
9 and 10, are complementary. That is, if position 1 is “ON,” 2 must be “OFF” and vice versa; if 3 is
“ON,” 4 must be off, and so on. To prevent improper operation of the SF-1 and the amplifier, and
possible damage that may result to the accessory, amplifier, or loudspeaker, check your switch
settings carefully before you install the SF-1 in your amplifier.