[Android Head-Units] benna:
Xtrons TE103AP reveiw -- RCA output voltage ?

So , My review of the Xtrons TE103AP.

No1) First of all , I received a faulty unit and a faulty 4G mode.

Xtrons LIES to you when they say the 4G modem works with this unit and others may not. It is JUST A HOT SPOT. So its just WiFi. USB is just there to give it power to the modem. It does not theter trough USB. So how may other modems not work if its just a hotspot?? Does the unit not work with all WiFi hotspots ?? NEGATIVE point there.

No2) Th unit was faulty. There was a crack in the screen ( very very small , but it bothers me) and the touch screen is out of calibration. I initially said to them they when I type on the key board , I cant use the "A' and "S".

Later I found that you can display the touch on the screen and found that the touch screen is out of cal on the left side of the screen. They said they will send me a new screen and modem. I initially asked for a refund on the modem , but said they rather send a new one.

No3) I payed a bout one 3rd of the unit price for shipping. That is insane , but it is what it is. So I asked them when are they sending my new screen and modem and they said they are waiting for stock from the supplier. So, this was discussed on 9th of June , its now 19July. 1 month and 10 days and the screen is not even in my country. I just feel I used fast shipping when ordering , I had a out of box failure , so they should send my replacement via the fast shipping again. I payed for a working unit , its not my problem they sent a faulty unit. Why should I suffer ?? Now they are using the slowest mail on earth?

No4) The tilting screen is not so gr8. It makes the unit feel un-sturdy and cheap. The 2x wing nuts holding the screen in its place has little balls with springs in them, so when you loosen the nuts a bit and tilt the screen , you should feel a "click' 'click" sound as the spring loaded ball slots into the little holes of the tilting screen. Mine does not. The holes and the ball does not line up.

So I had to over tighten the wing nuts to keep the screen sturdy and this caused the plastic to break out where the nuts are located.

Bad quality and bad design.

So , I put plastic in where the screen and radio swivels to make it harder for it to swivel. Its very sturdy now and feels more premium. Its hard to put in a CD now as its hard to tilt the screen down now , but who listens to CD anyway :)

No5) So I measured the RCA output voltage with a oscilloscope. Its around 1V at full volume.

I actually made a nice chart with lots of different frequency's and the output voltage. To my surprise , at full volume I had perfect sine waves with no distortion. But at one Volt , is to low.

Dont get me wrong , its enough for my setup , as I have a decent amplifier , but you have to turn up the GAIN on the amp to make up for the low RCA voltage witch introduces noise in your system.

No6) The volume at the lowest is to loud. The can be software related as I am using a custom ROM and I did not test the radio with stock firm ware.

No7) The screen had a loud cracking noise. It will make the noise when you type and when the car moves it is a rattle. Had to open the screen to fix that.

No8) Bluetooth audio ( my voice when in a phone call) is not good. It pics up all the road noise and my voice volume is low. I am using my previous radio mike witch worked well , so its not the mic.

PS< when using an external mic , the internal mic stays on. I have to figure out how to switch it off without cutting the wires.

No9) Android 8 does not allow 3rd party apps to adjust the screen brightness. I wanted to use Tasked to adjust the brightness at certain times of the day. Cant do that.

No10) Nos DSP or DTA or Network mode or any decent audio controls. Audio settings a the most basic I have ever seen on a stereo. But that I knew before I got it.

No11) No USB 3Gdongle support via USB.

The good:

The screen quality is ok-ish. Touch is not good though.

FM radio reception is OK , same as stock radio.

Audio quality is OK , not near audio phile , but its OK-ish for every day use.

3 USB ports is nice to have.

Clearly marked wires for installing the radio.

Big screen is nice to have for GPS and reverse camera.

PS. I have seen lost of question regarding the reverse camera. Its just a RCA input. Nothing fancy. My cheap camera works fine.

The ability to auto turn down the volume when switching to reverse is cool.

I am using MALAYSK ROM , works good and the unit is snappy.

I got the radio just to have a Android unit and a big screen. For that , its server it purpose. Will I buy it for a replacement for a radio and media played. NO. Its just for the big screen and 4GB RAM. Audio and build quality is not good. But I am still happy for now. Does what it should.

That is my opinion on my radio for now. If you want to to know what my bluetooth audio quality sound like , look for my youtube channel , Benrie Fourie. I am busy modifying my Ford Figo and will post a video in the next 3 weeks witch I recorded using DU Screen recorder and my radio mic. Its a screen recording the the app called Torque.

Have fun with Android radios !!