I removed the ornament-fabric from the front panel – without damaging it – yay.
This will be a bit more complicated than I have thought but it can be done. So I need to fit 8,8 liter into the radio chassis. In the meantime measured the volume of the donor speaker box. The even sell just the module, without a breakout board ((Link to the ebay offer of the Bluetooth module)) I asked Sure-Electronics if the can provide me the this information and I hope they do. The module even provides sophisticated functions such as button inputs for play/pause, next, previous, vol+, vol- which can be programmed but the datasheet that I found online does not provide the information on how to set this features. The Bluetooth module (BTM98-8AA) provides a amp-mute pin to power down the amplifier so no complicated hacks are necessary. For both features to be used a little modification to amplifier board is necessary. Another nice feature is a power down mode which reduces the power consumption drastically when no audio output is needed i.e. I will use only mono audio for this project so it comes handy that this chip can be set to drive a single speaker (mono as well). The Amplifier chip is an TPA3110D2 ((Product website TPA3110D2)) from Texas Instruments. Some thoughts on the BT module and the amplifier chip. I bought the amplifier from the same company (( Link to the ebay listing of the amplifier ))
It is an APT-X Bluetooth 4.0 from sure electronics ((Link to the ebay offer of the bluetooth module)). I got the Bluetooth receiver in the mail. Bluetooth receiver, Class-D Amplifier, bass reflex loudspeaker, lead-battery, USB-charging port and a carry handle.Ī shot of the interior of the radio. I am going to build a Bluetooth speaker box with the case. Anyways, I have already striped the electronics inside so this does not matter. Since it was defective I got it for free. I sourced an old tube radio from an good will store.
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