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# FAQ (NAS-sourced)

Real Q&A derivable from NAS manual content read this pass. Format matches `` for consistency but is NOT merged into that file (never overwrite existing content).

**Q: What comes in the box with an FC-1 amplifier?**
A: FC-1 Amplifier, User Manual (English), User Manual (Simplified Chinese), 20A Fuse x2, PH 5pin Cable, Self Tapping Cross Screws x4.

**Q: Does FAK-165 need an external crossover?**
A: No -- FAK-165 ships with its own passive crossover unit; wire the amplifier output into the crossover, then the crossover into the woofer and tweeter.

**Q: What is FAK-165's sensitivity rating?**
A: 89 dB (2.83V/1M).

**Q: Is FED-1000 an active or passive subwoofer?**
A: Active (self-amplified) -- it has its own 180W RMS amplifier, gain/filter controls, and a 25A fuse.

**Q: How do I upgrade the Bluetooth firmware on my FP-8V5 or FP-10V5?**
A: Copy the correct update.ufw file to a USB drive, plug it into the DSP's U-DISK port while the unit is powered on, and wait for 6 "Dong" tones confirming success. Disable-Bluetooth firmware is universal; Restore-Bluetooth firmware is model-specific (8V5 and 10V5 differ).

**Q: Is there an Android app for tuning Freude DSP units?**
A: Yes, for the FP-6/FP-6A/FP-6APro family (DSP-Manager Android v1.03) -- see .

**Q: What does FCC-90A actually do?**
A: It's a Digital Power Capacitor (power stabilizer) that smooths voltage delivery to an amplifier, with soft-start and over/undervoltage protection; not a traditional electrolytic capacitor.