•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.

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QSC Audio SF-1, SUBWOOFER FILTER owner manual Stereo, Bridged Mono, and Parallel Mono
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SF-1, SUBWOOFER FILTER specifications

QSC Audio SF-1 Subwoofer Filter is an innovative solution designed to enhance the audio experience in various settings, from live events to permanent installations. Tailored especially for installations that involve subwoofers, this filter serves a critical role in optimizing low-frequency performance, ensuring clarity, punch, and depth in the audio output.

One of the primary features of the SF-1 filter is its adjustable cut-off frequency. This allows sound engineers and users to fine-tune the filter settings according to their specific acoustic environment and preferences. Whether being used in a club, theater, or concert hall, the flexibility to set the cut-off frequency enables optimal integration with other system components, allowing for seamless sound reproduction.

The SF-1 is engineered with cutting-edge technologies that help reduce distortion and enhance the overall fidelity of low-frequency sound. Utilizing advanced digital signal processing (DSP), the filter can accurately manage the dynamics of low-end audio, resulting in a more controlled and impactful low-frequency response. This is particularly beneficial for subwoofers, as it prevents muddiness and ensures that bass notes remain clear and distinct even at high volumes.

Another notable characteristic of the QSC SF-1 is its robust build quality, which is essential for both touring and fixed installations. The unit is designed to withstand the rigors of regular use while maintaining reliable performance. Its compact size makes it easy to integrate into various setups without occupying excessive space.

Additionally, the SF-1 offers intuitive controls, making it user-friendly for both seasoned professionals and those new to sound engineering. The interface provides clear indicators for settings, allowing quick adjustments during live sound scenarios or installations.

In conclusion, the QSC Audio SF-1 Subwoofer Filter stands out as a powerful tool for managing low-frequency sound. Its adjustable cut-off frequency, advanced DSP technology, robust build, and user-friendly interface combine to create a versatile solution for any audio application. By ensuring enhanced audio clarity and performance, the SF-1 filter continues to be a valuable asset in the professional audio community, elevating the listening experience across various environments.
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