[MOD][DSP] simpleDSP installation into MTCD/E inside (ImprovedSound)

[pir8man]

Thanks a LOT, when you install on yours can you post the diagrams I need to follow? I wasnt able to figure out the pinout yet.

As of right now I use the unit outputs RCAs': SUB, FR and FL to go straight to my amplifier.

So in order to be able to control the sub I need to buy the extra dac ? Or i can do it with the current RCA Im already using?

And what would be "analog input switching" ?

thanks again!

Fortunately, I need all 5/6: FR, FL, RR, RL, & SUB. If you can get RR & RL to act as a low pass filter for SUB is beyond my knowledge.

Analog input switching to switch between your non-digital sound sources to play through the DSP: Auxilary input, Radio, TV, or DAB. Because the DSP board only has one analog source input. If you do not add the switch, you have to hard wire only one analog source to the DSP. I use radio and my AUX input on occasion, so I want the switch chip for my install.

 

[Pacote-san]

Fortunately, I need all 5/6: FR, FL, RR, RL, & SUB. If you can get RR & RL to act as a low pass filter for SUB is beyond my knowledge.

Analog input switching to switch between your non-digital sound sources to play through the DSP: Auxilary input, Radio, TV, or DAB. Because the DSP board only has one analog source input. If you do not add the switch, you have to hard wire only one analog source to the DSP. I use radio and my AUX input on occasion, so I want the switch chip for my install.

Since Im using an external amplifier Im sure I can use RR and RL to go to the sub channels (2 channels in bridge to give me 400w rms) But Im unsure if I would be able to controle the sub with the slider.

I ordered the dsp chip and the board to use as sub out if needed.

I wont be needing the analog switching cause I will only use fm radio. I dont use AUX for anything.

 

[ultimacorsa]

Can be the DSP module installed on PX5 Android 9?

A new apk with the 15 band eq that shown in fig. 17 to fig. 20 already present in the original Chinese Android build versions from 6.0.1 to 8.0 for MTCE head units and do not need to add anything yourself, since to activate the improved equalizer mode, it is sufficient only that the MCU firmware detects a DSP chip on the I2C bus and sends the command to the Android device

Hi, this mod can be applied to this unit model?

Code KMQW76 (Asure A-Sure)
PX5 Android 9.0
rockchip rk3368
MTCE_LM_V3.37_1
Kernel Version 4.4.167.
4GB ram - 64Gb rom
CPU 8 core 64-bit CPU ARM Cortex-A53 @1.5GHz
GPU: PowerVR Rogue G6110
Chipset: U-BLXO G60101 ST

Thanks

 

[fraglez8]

MTCE

[/COLOR]Anyone done it on unit similar to this one on the pictures?
This is PX5 Eonon unit with MTCE base
It is using BD37033FV chip. Looks like the pinout is the same as on the other boards. Two rows of headers around the chip are useful for connections but I'm not sure about the pinout.
Some other question... there is a DVD in my unit.. (which I dont need). Will there be anny issues if I will leave it out?

This is my guess at the pinout:

 

[pir8man]

[/COLOR]Anyone done it on unit similar to this one on the pictures?
This is PX5 Eonon unit with MTCE base
It is using BD37033FV chip. Looks like the pinout is the same as on the other boards. Two rows of headers around the chip are useful for connections but I'm not sure about the pinout.
Some other question... there is a DVD in my unit.. (which I dont need). Will there be anny issues if I will leave it out?

This is my guess at the pinout:

Patcher2k posted a PCB layout to connect directly to the two rows of headers that your unit has.
If I had your model, I would order a PCB from his designs and install the mod that way.

 

[Nicez]

Hi guys, just stumbled across this thread I have some questions.

I've ordered and installed a PX30 HU obviously without dedicated DSP and the sound was horrible.
I wasn't really informed at this time so I sent it back for a refund. Now I am looking to get a android HU which meets my audiophile requirements.

I only use the RCA outputs in my setup which are connected to three amps. They fire my front and rear system as well as a subwoofer.

With the previous HU the sound was not very clear at higher levels and the bass lost all its precision, like I said it sounded terrible overall in comparison to my previous DIN1 radio (Kenwood KDC73 DAB).

Can you tell me if a HU with dedicated DSP (ADAU1701) will improve the sound significantly in my setup in terms of precision and overall quality?

I found this one which would fit in my car: Erisin ES1889b

https://www.ebay.de/itm/233465442847

It shows the 15 band equalizer in the pictures. Is this a proof that it comes with the DSP or could it be fake.

Thank you in advance

 

[pir8man]

Hi guys, just stumbled across this thread I have some questions.

I've ordered and installed a PX30 HU obviously without dedicated DSP and the sound was horrible.
I wasn't really informed at this time so I sent it back for a refund. Now I am looking to get a android HU which meets my audiophile requirements.

I only use the RCA outputs in my setup which are connected to three amps. They fire my front and rear system as well as a subwoofer.

With the previous HU the sound was not very clear at higher levels and the bass lost all its precision, like I said it sounded terrible overall in comparison to my previous DIN1 radio (Kenwood KDC73 DAB).

Can you tell me if a HU with dedicated DSP (ADAU1701) will improve the sound significantly in my setup in terms of precision and overall quality?

I found this one which would fit in my car: Erisin ES1889b

https://www.ebay.de/itm/233465442847

It shows the 15 band equalizer in the pictures. Is this a proof that it comes with the DSP or could it be fake.

Thank you in advance

yes, a HU with DSP will give good sound quality after configuration.
The unit you found does have the hardware DSP. Erisin units have a fairly weak CPU.
A similar unit with PX6: HERE (just be sure to select one of the PX6 sub-models)
An all touch-screen 9" unit with PX6: HERE

 

[Nicez]

yes, a HU with DSP will give good sound quality after configuration.
The unit you found does have the hardware DSP. Erisin units have a fairly weak CPU.
A similar unit with PX6: HERE (just be sure to select one of the PX6 sub-models)
An all touch-screen 9" unit with PX6: HERE

Thanks for your response. I think I will give it a try with the Erisin PX30. I don't want to order from Aliexpress since I don't know if I will like the sound quality and keep the HU. I prefer ordering from local Ebay or Amazon to have the possibility of sending back the HU for a refund or in case of any failures on the system.

 

[pir8man]

Thanks for your response. I think I will give it a try with the Erisin PX30. I don't want to order from Aliexpress since I don't know if I will like the sound quality and keep the HU. I prefer ordering from local Ebay or Amazon to have the possibility of sending back the HU for a refund or in case of any failures on the system.

I have no problem making returns on AliExpress. Although, feel free to keep to what you are comfortable with

 

[Snipeg]

Just mounted DSP module to my PX5 unit. It is just awesome! Sound is excellent. Now I just have to make it nicer and add input selector for analogue channels. Now I have only blue-tooth connected to that one analogue input on DSP board

 

[Pacote-san]

My board arrived and Im just waiting for the other board (for sub) to arrive so I can start soldering

---------- Post added at 02:37 PM ---------- Previous post was at 01:56 PM ----------

I think I asked before but didnt get a proper answer.

Anyone know If I can just use the RR and FR directoly to my external amplifier?

The stock SUB OUT rca would work normally? The sub slider would work or I need to solder the other board in order to control that?

 

[Pacote-san]

Yes, I am using external amplifiers and have removed the internal TDA XXXX chip completely from the unit, mainly for improved thermal/power noise reasons. I am taking the signal directly from the DSP and sending it to my amps.

---------- Post added at 12:08 AM ---------- Previous post was at 12:06 AM ----------



I would recommend updating your MCU before anything else. It should be responsible for waking hardware components back up, and I believe it is also responsible for the beeps.

Can you help me out with this mod? I have a few questions and Im unable to find those here.

Can I solder this mod in a way that I can use all the stock rca connectors? FR, FL and SUB out?

---------- Post added at 03:15 AM ---------- Previous post was at 02:35 AM ----------

The HCT-PX5-REV3 does not have an I2S output on the pin header. I had to solder directly to the Wolfson audio DAC for a signal.


Here are some pictures of the connections, it's working great!

In the first post is says

The DSP chip has two built-in ADCs, so the analogue sound from the FM radio tuner can be connected to the sound processor pins as follows:
-- FM-R (pin 10) to 2 pin (ADC0);
-- FM-L (pin 11) to 4 pin (ADC1)

But in your installation and this diagram

FM R and L are on pins 8 and 9 so what gives?

 

[Pacote-san]

And one last thing, just to see If Im correct on what I need to do.
I want to use the SUB OUT RCA that already comes out from my HU so, I will be using this:

https://i.imgur.com/xcyjS0i.png

So if Im correct reading the first post:

SDIN -> solders to S_DATA from DSP chip (MP6)
SCLK -> solders to SCLK from DSP chip (MP11)
LRCLK - > solders to LRCLK from DSP chip (MP10)
MCLK -> solders to MCLK that comes from PX5 chip
GND -> Any ground
VDD -> where do I get the 3.3V ?

And then I should get either the left or audio output from the P2 socket and solder to where was pin 19 on the BD37033FV (sub out) correct?

https://i.imgur.com/Wt14C0x.png

Then I can just use the SUB OUT RCA that I already use to connect to my external amplifier and will be able to adjust the sub values on the app right?

 

[Pacote-san]

I followed sda2 picture on how to get the signals from PX5 that doesnt have the extra 4 pads and this is what I got

Soldered like the diagrams

When I boot with stock MCU I still get the old AMP (not the new 15 bands one) and only noise on my speakers

When I turn the volume down or Up I get a feedback (the noise changes)

What could be wrong?

FIXED:

It was late at night I misread the ground point and that was the issue.

Soldered the correct ground and its working perfectly

Now to solder the other board for the subwoofer

 

[Pacote-san]

And one last thing, just to see If Im correct on what I need to do.
I want to use the SUB OUT RCA that already comes out from my HU so, I will be using this:

https://i.imgur.com/xcyjS0i.png

So if Im correct reading the first post:

SDIN -> solders to S_DATA from DSP chip (MP6)
SCLK -> solders to SCLK from DSP chip (MP11)
LRCLK - > solders to LRCLK from DSP chip (MP10)
MCLK -> solders to MCLK that comes from PX5 chip
GND -> Any ground
VDD -> where do I get the 3.3V ?

And then I should get either the left or audio output from the P2 socket and solder to where was pin 19 on the BD37033FV (sub out) correct?

https://i.imgur.com/Wt14C0x.png

Then I can just use the SUB OUT RCA that I already use to connect to my external amplifier and will be able to adjust the sub values on the app right?

I did like my post above and while I get the subwoofer working, there sub on/off or adjusting gains does nothing.

So theres probably something wrong, hope someone can help me out

 

[Pacote-san]

Welp , I give up for now on the external sub working... I wired up the same as all the diagrams I saw but the sub button on the amp app does nothing, the sub is just on all the time and you cant change anything.

Also I cant use bluetooth a2dp or for calls. When I wire the pins 10 and 11 to DSP , FM radio works fine but whenever I try to call someone or open BT a2DP all I ger is FM radio sound.

 

[Pacote-san]

Im not sure if its something with Hal9k Rom, or my BT module (probably it) being SD-968 but the audio is not being sent digitally from android to DSP.

If I take the FML and FMR out of the DSP I get no bluetooth sound

If I wire it, I get FM radio where it was supposed to be bluetooth sound.

Will probably take it off everything and solder the old chip back because this is turning to be a huge hassle trying to find out when there were so many people who did this mod so, there a lack of support =/

 

[konzii]

Xtrons PQ PX6 DSP Upgrade?

Hi there,
did someone happen to retrofit a DSP module on the PX6 xtrons?
I found a special module from aliexpress: " XTRONS DSP Chip Modul Nur für XTRONS Android PA 8,1 & PA 9,0/PB 8,0 mit "ICH" & PB 9,0/PBX/PQ Serie "

Sorry, I'm using the Google Translator.
Best wishes.

 

[patcher2k]

Im not sure if its something with Hal9k Rom, or my BT module (probably it) being SD-968 but the audio is not being sent digitally from android to DSP.

If I take the FML and FMR out of the DSP I get no bluetooth sound

If I wire it, I get FM radio where it was supposed to be bluetooth sound.

Will probably take it off everything and solder the old chip back because this is turning to be a huge hassle trying to find out when there were so many people who did this mod so, there a lack of support =/

Hi,

you should read my post #72 and maybe all the others in this thread. Then you find the answer to your issue. The "normal" eq chip has more analog inputs with an internal multiplexer. The dsp needs an external mux controlled by two gpios.

 

[Pacote-san]

Hi,

you should read my post #72 and maybe all the others in this thread. Then you find the answer to your issue. The "normal" eq chip has more analog inputs with an internal multiplexer. The dsp needs an external mux controlled by two gpios.

I pretty much read all the post at least 3 times at the time already.

It was my understanding that bluetooth was using digital audio via android so it wouldnt need another via for it but I was wrong of course.

But I already soldered the old chip back and gave up since I wasnt able to do the sub working properly.