DIY Audio questions and answers - Audio amplifier car board

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Audio amplifier car board

Printed From: Graham Slee Hifi System Components
Category: DIY AUDIO
Forum Name: DIY Audio questions and answers
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URL: https://www.hifisystemcomponents.com/forum/forum_posts.asp?TID=4159
Printed Date: 27 Mar 2026 at 2:15am
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Topic: Audio amplifier car board

Posted By: bubu
Subject: Audio amplifier car board
Date Posted: 08 Mar 2017 at 1:43am

I have a old autoradio (cassette and not AUX input ) in my car. But i don't want change because it pretty. I just want to add bluetooth. I leave fm receiver side for the true audio / radio.

I want to know if i purchase both parts :

TDA7388(

http://www.kynix.com/uploadfiles/small/TDA7388.jpg" rel="nofollow - http://www.kynix.com/uploadfiles/small/TDA7388.jpg

)

four-channel 41W audio amplifier board and

Bluetooth home-car receiver adaptor

I connect the audio amplifier with bluetooh receiver and power amplifier with speaker and i add a switch, to switch(speakers) between true audioradio/power amplifier.

I know i must add a power convert 12V->5V for the Bluetooth module.

I want to know if this is good "cheap" solution ?

Sorry for my English, I'm French.

Replies:

Posted By: Graham Slee
Date Posted: 08 Mar 2017 at 6:43am

Do you know what you are getting yourself into?

I would say it is doomed to failure.

-------------
That none should be able to park up and enjoy the view without a smartphone and the knowledge in how to use apps

Posted By: gwebster
Date Posted: 08 Mar 2017 at 10:19am

Far easier to wire something like a Parrot ( https://www.parrot.com/uk/car-kits/parrot-mki-9100" rel="nofollow - https://www.parrot.com/uk/car-kits/parrot-mki-9100 ) or Nokia Bluetooth (CK-200) unit into the car radio harness. This will allow hands-free telephone use and make music available from your phone or iPod.

I had a CK-200 wired into my '02 Saab's original radio this way which I've just removed to replace the original radio with a Bluetooth-equipped media player radio.

My Saab had a dedicated connector in its harness for a phone but these kits will simply plug into the car's ISO wiring to your radio. At the most, you might need a simple adaptor (which is usually available from a car accessories outlet.

Geoff