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


Jun 15, 2022
Jun 15, 2022
  1. Will the speakers and amplifier handle the audio file specifications, such as the frequency?
  2. 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?
  3. Can the volume be adjusted with the gain control or level knob as I am not connecting it to a head unit?
  4. Should I use Low Input or High?
  5. 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?
  6. 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




Sep 24, 2016
Sep 24, 2016
The low power speakers will be destroyed by the high amplifier power.
The speakers are too small to produce low audio frequencies. The speakers need enclosures designed for them.
The speakers are connected to the amplifier inputs instead of to their outputs.
The amplifiers are rated at 14.4V which is a charging car battery, not at only 12V.
The power supply does not produce enough current for the amplifiers operating at maximum undistorted output and will be very overloaded with 6A added for other things.