Author Topic: AUX input trough CD player  (Read 1713 times)

0 Members and 1 Guest are viewing this topic.

Offline KrisBendixTopic starter

  • Contributor
  • Posts: 13
  • Country: lv
AUX input trough CD player
« on: September 29, 2018, 08:47:30 pm »
Hi.
Just a random tinkering project. I want to use a car radio as an amplifier. Need to get audio in somehow. It has a removable CD player. The connector pins have left and right channels (and s-ground which is for audio input too I guess?). I wonder if there is a way to trick the radio so it stays on CD play mode and lets the audio trough. Ideally to work without the CD player attached. Would free up space for a power supply.
Any pins to connect or something like that?
 

Offline jeroen79

  • Frequent Contributor
  • **
  • Posts: 529
Re: AUX input trough CD player
« Reply #1 on: September 29, 2018, 09:49:27 pm »
An easy way is to keep the CD player attached with a CD in it.
Then you switch the audio pins to your Aux.

I see that there are two Bus pins. (Bus- is also Gnd)
Presumably this is used for the CD player and radio to communicate and let the CD player tell the radio that it is playing a CD.
You should investigate what is transmitted over this bus.
You can then program a microcontroller to send the same signals.

Do you want to keep the radio function?
You could also wire the Aux in between the amplifier section and radioreceiver.
May be add a switch or relay to keep both functions.


« Last Edit: September 29, 2018, 09:54:08 pm by jeroen79 »
 

Offline KrisBendixTopic starter

  • Contributor
  • Posts: 13
  • Country: lv
Re: AUX input trough CD player
« Reply #2 on: September 29, 2018, 10:59:40 pm »
No, I don't think I would use the radio. Will have to investigate that option. Thanks for the idea.
I think it also has a connector for tape player on the bottom. Maybe it is "less digital". Working with microcontroller would be a bit too complicated for this project tho.
 

Offline robjodicarter

  • Regular Contributor
  • *
  • Posts: 51
Re: AUX input trough CD player
« Reply #3 on: September 30, 2018, 12:57:25 am »
What car radio is it factory or aftermarket, I made an adapter for the one I have in my garage. Once the radio sees that there is power going to the CD player it will pop up when you turn it on.
Hi.
Just a random tinkering project. I want to use a car radio as an amplifier. Need to get audio in somehow. It has a removable CD player. The connector pins have left and right channels (and s-ground which is for audio input too I guess?). I wonder if there is a way to trick the radio so it stays on CD play mode and lets the audio trough. Ideally to work without the CD player attached. Would free up space for a power supply.
Any pins to connect or something like that?


Sent from my PH-1 using Tapatalk

 

Offline KrisBendixTopic starter

  • Contributor
  • Posts: 13
  • Country: lv
Re: AUX input trough CD player
« Reply #4 on: September 30, 2018, 10:13:00 am »
Factory. Model is bl4c 66 9s0 from Mazda 232.
 

Offline Audioguru

  • Super Contributor
  • ***
  • Posts: 1507
  • Country: ca
Re: AUX input trough CD player
« Reply #5 on: September 30, 2018, 04:42:00 pm »
Many people feed audio into a car radio with a little stereo FM transmitter that has a short range.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf