Remote Rx75 Radar Stereo Mute

[SKiTLz]

Im looking at puting a Beltronics RX75 Remote Radar detector into my car. The unit has an output for a speaker which gives you voice alerts.

What I wanting to do is work out if its possible (and if so how?) to wire into my stereo so it mutes or lowers my stereo when the voice alerts come through.

Does anyone have any idea on where I would start with this?

Thanks

[(OO_The4door_OO)]

There are a few ways to mute your stereo, but they will need somebody who is good at designing circuits from scratch (like me).

Two examples:

1. If your head unit has the provision for telephone muting, you would use an isolated switched output controlled by the internal amplifier of the radar detector to trick your head unit into thinking that you are on the phone so it mutes itself when the radar detectors speaker sounds and resumes volume when the detector shuts up. This is how I have my Beltronics STI Driver set up.

2. If your head unit does not allow for phone muting but your car speakers are run off amplifiers, you would use the same switched output to iether turn the remote 12v to the amps off, or use it to switch an attenuation circuit (volume normal or really low) so the RCA feed is cut to a level where you can easily here the detector.

Easy fix but entirely custom.

Let me know how you go.

Regards

Justin

[sewid]

If the radar detector has any sort of LED light up to tell you when it detects something you can use a low current relay circuit to trigger the telephone mute on your stereo.

Jaycar sell a kit that could probably do that for $7.95. Catalogue number KG9142.