Re: Packard Radios

Posted by BigKev On 2015/4/1 11:00:47

2x20watt AMP IC ordered and FM radio IC ordered. Sadly to get the best prices on these they are coming from mainland China (7-21 days shipping time). So once those arrive I can start putting the circuit together.

The circuit should run on 6v-14.4v and if put in an external plastic housing , that can be hidden under the dash which will leave the existing radios innards in place. Also it should be ground isolated, so the module so it can be used in -/+ ground applications. Red to +, Black to -, regardless of ground polarity.

Hopefully it will just be a matter of disconnecting the original control wires in the Packard radio, and attaching the wires from this new radio, and then running through a quick setup routine to calibrate the unit for the controls.

Obviously the AMP circuit will be able to put out more power on the 12v cars than on the 6v cars. But at 20watts, or even ~10watts on a 6v application, it should be plenty enough to drive the original low wattage speaker(s), or a low-power dual-voice coil replacement. There are other higher wattage amp IC's available, but to start with, I think this is in butter zone for the original speaker(s).

Once I get the base circuity working, then I will look at layering in the Bluetooth circuitry.