DSP audio processor car amplifier mixer digital mini DSP module board android app Vcan1783

DSP audio processor car amplifier Feature

1. 4-way low-level input, 4-way high-level input, HD Bluetooth input
2. 4-way amplifier output, 8-way RCA output.
3. Output routing function, each output channel can select the input signal source.
4. 8×31 segment PEQ, multi-slope high and low pass function.
5. 8 channels with independent delay adjustment function.
6. Output power (14.4V power supply, including line loss):
   1. RMS: 4x30W@4Ω, THD<1%; 4x38W@4Ω, THD<10%;
   2. 4x55W@2Ω, THD<1%; 4x68W@2Ω, THD<10%;
   3. Peak: 4x72W@4Ω, 4x136W@2Ω;
7. Perfect protection: Zero-current power supply reverse connection protection, under-voltage protection, overvoltage protection, load dump protection, power amplifier output short circuit protection, etc.
8. HD Bluetooth V4.2.
9. In Start mode, the switch selects ACC or high-level start.
10. Support Android program tuning and PC tuning
11. 8 EQ modes can be preset.

 

DSP audio processor car amplifier Specification

Note: The following indicators and diagrams use 4Ω load, all use APX515 audio analyzer, the indoor ambient temperature is 25°C, and the voltage at both ends of the dedicated line power supply is 14.4V.

Parameter			Test conditions	Minimum	Typical	Maximum	Unit
High input impedance					10		Ω
Low input impedance					15K		Ω
High input voltage			It is formulated according to the front-stage power amplifier. When the maximum effective value of the front stage is reached, the power amplifier outputs the maximum power.	0.05	6	10	Vrms
Low input voltage			It is formulated according to the front-stage power amplifier. When the maximum effective value of the front stage is reached, the power amplifier outputs the maximum power.		1.0	1.2	Vrms
Continuous output power			4Ω load, 1K sine wave, continuous load test at full power for more than 20 minutes, THD<1%, A-weighting		30		W
			4Ω load, 1K sine wave, continuous load test at full power for more than 20 minutes, THD<10%, A-weighting		38		W
CH1~CH8, Output voltage, maximum			The output value when the corresponding power amplifier channel outputs THD<1%, at this time, the RAC output THD<0.02%.		2		Vrms
Frequency			0~-3dB	20		20K	Hz
Total Harmonic distortion + noise THD+N		PA channel	4Ω load, 1W output			0.05	%
		CH1~CH8	1Vrms output, APX515 input impedance 200KΩ			0.02	%
Noise Level	PA Channel		4Ω load, A-weighted			-75.5	dBv
	CH1 ~ CH8		A-weighted, APX515 input impedance 200KΩ			-96.5
S/N	PA channel		4Ω load, 30W output, 1K sine wave, A-weighted	94	96		dB
	CH1 ~ CH8		1Vrms output, APX515 input impedance 200KΩ, A-weighted	94	96
Dynamic Range AES17	PA channel		4Ω load, 1K sine wave, signal level range -60dB, A-weighted	88	90		dB
	CH1 ~ CH8		1Vrms output, input impedance 200KΩ, A-weighted	88	90
CrosstalK	PA channel		4Ω load, 30W output, 1K sine wave, A-weighting, absolute value	70			dB
	CH1 & CH8			70
SMPTE	PA channel		4Ω load, half power output, frequency 1: frequency sweep 40~1kHZ, frequency 2:7kHZ, amplitude ratio 4:1.			0.069	%
	CH1 ~ CH8		1Vrms output, APX515 input impedance 200KΩ, A-weighted			0.05

DSP audio processor car amplifier Input / Output Define

Front Panel

1. PC host computer USB interface.
2. Start switch selection:
* HIGHT: The high-level audio signal is activated, and the ACC activation is also valid.
* ACC: Key door switch activated.
3. Power Indicator
4. Universal interface for car amplifiers.
* ACC is the key switch terminal.
* The positive and negative poles of the power supply are connected to the +12V power supply of the car.
*REMO output pin.
* High-level signal input terminal.
*Output, connected to the car horn.
5. WIFI control switch (after adjusting the sound effect on the Android platform, turn the switch to the “off” position, especially for new energy vehicles, you must turn off the wifi power supply after adjusting the sound effect, because the new energy radiation interference is more serious, which will affect the sound quality )

Back Panel

1. Low-level signal input RCA socket
2. Subwoofer and center low-level signal output RCA socket (can be connected to active subwoofer and active center speaker)
3. Low-level signal output RCA socket
4. Connect the WIFI antenna
5. Internal prefabricated sound field sound effect mode switching

DSP audio processor car amplifier Precautions:

1. For the sake of safety, you cannot use larger insurance without authorization. The standard insurance on the dedicated line should be 15A.
2. For 20PIN special wires, the diameter of the power supply wire is not less than 16AWG of American Standard, and the diameter of the power amplifier output wire is not less than 20AWG of American Standard.
3. This product is only suitable for use in automotive 12V power supply systems.
4. The power cord cannot be reversed, otherwise, it will not work.
5. When the DSP amplifier is connected to a power supply environment exceeding 18V, it will automatically mute and remain in standby mode, which complies with the national standard GB/T28046.2-2011. When there is no sound output after the power amplifier is turned on, please check whether the power supply voltage exceeds the usage requirements.
6. Transient suppression P5 standard, according to GB/T21437.2-2008 requirements, the default is P5a, 87V/100ms/8Ω standard implementation. If the generator voltage regulator of the car is damaged and exceeds the range of transient suppression, the product may be damaged.
7. The power amplifier of this product only supports loads above 4Ω. If the impedance of the 6.5-inch full-range speaker is less than 4Ω (such as 3Ω or 2Ω), the power amplifier chip may be overloaded in the low-frequency “explosion” state, and it will be released after about 2 seconds of silence. Mute. It is not recommended to use a load below 4Ω for low-frequency scene applications.
8. High-level audio signal power-on is only suitable for the situation where the head amplifier has a DC bias of >4.5V when the power-on is static. It is not suitable for occasions where there is always a DC bias output after the head unit is turned off, or where there is no bias output when the car is turned on.
9. Please configure the ACC power-on or high-level power-on reasonably. If the configuration is unreasonable, the DSP power amplifier may be in the power-on state after the head of the car is turned off, resulting in a large standby current and shocking sound when switching on and off.
10. REMO output, there will be output only after the DSP power amplifier is turned on and unmuted, and the output will be cut off when the DSP power amplifier is muted when the power is turned off. The output capacity of REMO is limited, so it should not be used to drive other loads.
11. When installing the power amplifier, there must be no obstacles blocking the heat dissipation port of the product, otherwise, long-term use may affect the life of the product.
12. For low-level input, if the ground of the RAC terminal is in contact with the DSP power amplifier shell, “aircraft sound” may be introduced, please replace the RCA wire.

DSP Mixer for PC software and Android Phones APP download

DSP mixer for PC software download

https://drive.google.com/file/d/1YWbP33FIZqP0Po6BYLGk_K-MVULFP7WG/view?usp=sharing

Android Phones APP download

https://drive.google.com/file/d/1b3XltU0G7LexRqKgIRjF5jOTE04MIVSX/view?usp=sharing

Optional Accessory