Amplifier Accessories

QSC amplifier accessories easily mount to the rear panel of two-channel DCA and ISA amps to expand amplifier capabilities for specific applications while conserving cost and rack space.

• XC-3 2-way Crossover — An active, 2-way crossover module that mounts via DataPort, the XC-3 features
  4th-order filters with low frequencies routed to amp channel 1 and highs to channel 2. A 3-way crossover can
  be implemented using the XC-3 with the LF-3.
• LF-3 Low-frequency Filter — Mounted via DataPort, the LF-3 provides two discrete channels of 4th-order low-pass filters. Each channel filters the low-frequency output from one XC-3, enabling one channel of the LF-3’s host amp to power the low end of an active 3-way system. In typical screen channel use, three amps with XC-3s could handle LCR mids and highs, while two amps with LF-3s could handle LCR lows (with one channel to spare).
• SF-3 Subwoofer Filter — The SF-3 is a subwoofer signal processor that mounts via DataPort and extends the response of QSC subwoofer enclosures including the SB-5118, SB-5218, SB-7118, and SB-7218.
• IT-42 Output Isolation Transformer — Designed specifically for the DCA 1222, the IT-42 is an output isolation transformer allowing the amp to drive two 25, 70, or 100 volt distributed lines. The IT-42 is pre-wired for quick and convenient mounting.