Signat Furu 400 - User Manual

Questions and Answers

A
Allison ArnoldAug 8, 2025
Why is my Signat Car Amplifier producing a whining noise?
- B
  Brian GarrettAug 8, 2025
  A whining noise from your Signat Car Amplifier is often due to alternator noise, typically caused by poor grounding. Check all ground connections related to the amplifier, source, battery, or alternator. You might also need to install a noise filter on the source unit's power cable or a coupling transformer in the signal path to improve ground isolation. Adjusting the ENS setting may also help.
J
Jamie JonesAug 12, 2025
What to do if my Signat Furu 400 Car Amplifier has no sound, the power indicator is unlit, and the PROT indicator is unlit?
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  chelsea83Aug 12, 2025
  If your Signat Car Amplifier has no sound and both the power and PROT indicators are off, start by checking the remote turn-on connection and voltage at both the amplifier and the source unit. Then, check all system fuses. Recheck all wiring connections, looking for short circuits. Finally, test the speakers with another amplifier to see if they are blown.
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nicholas15Aug 16, 2025
Why does my Signat Furu 400 shut down and the PROT indicator is lit?
- J
  Jason TorresAug 16, 2025
  If your Signat Car Amplifier shuts down and the PROT indicator is lit, it indicates the protection circuit is activated, likely due to overheating or overload. Ensure adequate ventilation around the amplifier. Check the load impedance and speaker wiring for shorts to the vehicle chassis. Reduce the input sensitivity by turning the LEVEL control counter-clockwise and verify the supply voltage at the power terminal.
E
Evan NormanAug 20, 2025
Why is there distortion in the sound from my Signat Furu 400 Car Amplifier?
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  Amanda JohnsonAug 20, 2025
  Distortion in the sound from your Signat Car Amplifier can occur if the input level isn't properly adjusted. Try readjusting the amplifier input level by turning the LEVEL control counter-clockwise. Also, check the speakers with another amplifier to rule out speaker damage. Finally, set the ENS control to its minimum setting to reduce distortions.
A
Amy VangAug 25, 2025
What to do if my Signat Furu 400 Car Amplifier has no sound, the power indicator is lit, and the PROT indicator is unlit?
- K
  kennethlangAug 25, 2025
  If your Signat Car Amplifier has power but no sound and the PROT indicator is off, double-check the alignment of all filter controls, correcting any frequency overlaps. Also, double-check the function and wiring of the speakers, correcting any issues found.
R
rbakerAug 29, 2025
Why is the bass response poor in my Signat Furu 400 Car Amplifier?
- M
  Mckenzie MartinAug 29, 2025
  Poor bass response from your Signat Car Amplifier may be due to speakers being out of phase. Recheck the speaker wiring. If using a subwoofer, check its wiring and the adjustment of the phase shift control, correcting as needed.
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Andrew RobinsonSep 2, 2025
How to stop a ticking noise in my Signat Car Amplifier?
- J
  Jeremy BatesSep 2, 2025
  To eliminate a ticking noise in your Signat Car Amplifier, first try rerouting the amplifier input wiring, as the noise could be radiated from spark plug wires. If that doesn't work, the issue might be a poor car power supply, in which case you should install a noise filter and readjust the ENS setting.

Signat Furu 400 Specifications

General

Brand	Signat
Model	Furu 400
Category	Car Amplifier
Language	English

Signat Furu 400 - User Manual

Table of Contents

Questions and Answers

Signat Furu 400 Specifications