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Wiring Tsunami Super WAV Trigger (Qwiic) to Car Amplifier/Speakers

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Jun 15, 2022
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  • Will the speakers and amplifier handle the audio file specifications, such as the frequency?
  • With the PSU I will roughly have 6A left after other devices, will this be enough if the volume is turned up to max or would it destroy the components?
  • Can the volume be adjusted with the gain control or level knob as I am not connecting it to a head unit?
  • Should I use Low Input or High?
  • Did I wire the devices correctly? I am not sure how to wire the amplifier & speakers to the Tsunami Super Wav Trigger, I left that wiring out, could someone advise?
  • Should I wire the amplifier ground to the ground near the N and L terminals on the PSU to avoid noise? I will have a stepper motor, sensors and other devices on this same ground line so I think I shouldn't.
Audio Board: Tsunami Super WAV Trigger (Qwiic)
Microcontroller: Adafruit Grand Central M4 Express

Audio File Specifications:
Mix: Stereo
Rate: 44100Hz
Format: 32-Bit float

Speaker, suggestions welcome:
Speaker x 2 (FR 10 HM - 4Ω):

Rated Power: 20W
Maximum Power: 30W
Nominal Impedance: 4Ω
Frequency Response: 95 – 22000Hz
Speaker x 2 (FR 8 - 4Ω):
Rated Power: 10W
Maximum Power: 15W
Nominal Impedance: 4Ω
Frequency Response: 130 – 20000Hz

Amplifier, suggestions welcome:
Amplifier (GM-A3702):

Power Source: 14.4VDC (10.8V to 15.1V allowable)
Current Consumption: 14.5A at continuous power @ 4Ω
Average Current Consumption: 4A (4Ω for two channels)
Maximum Power Output: 170W x 2 @ 4Ω
Continuous Power Output: 60W x 2 @ 14.4V, 4Ω 20Hz to 20kHz
Load Impedance: 4Ω (2Ω to 8Ω allowable)
Frequency Response: 10Hz to 70Hz (+0dB, -3dB)
Low Pass Filter - Cut Off Frequency: 80Hz
Amplifier (CE102):
Power Source: 12V Channel
Configuration: 2 Channel
Total Power Output: 100W
RMS Power @ 4Ω: 38W x 2
Peak Power @ 4Ω: 50W x 2
Speaker Impedance: 4Ω to 8Ω
Frequency Response: 20Hz to 20kHz

Power Supply (QP-320D):
DC Voltage: 12V
Rated Current: 10A
Current Range: 0 ~ 10A
Peak Current: 10A



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