Hi, all:
I'm fiddling around with adding bluetooth to a 1990s GM Delco head unit - what I'm trying to find is a bluetooth module that allows audio to pass through while not activated but when activated, replaces the audio that would otherwise pass through. That way, if I can insert the module in the wiring from the cassette deck or am/fm to the amplifier, the sound would flow normally when the module was off but would be replaced by the bluetooth signal when the module is on. Basically, the same arrangement this jack has (Radio Shack 2740246).
My problem is that I don't know what a switch that'll do that is called, so I can't tell if items on Ebay / Amazon, etc. would fit the bill or not.
Any help greatly appreciated. 🙂
John
I'm fiddling around with adding bluetooth to a 1990s GM Delco head unit - what I'm trying to find is a bluetooth module that allows audio to pass through while not activated but when activated, replaces the audio that would otherwise pass through. That way, if I can insert the module in the wiring from the cassette deck or am/fm to the amplifier, the sound would flow normally when the module was off but would be replaced by the bluetooth signal when the module is on. Basically, the same arrangement this jack has (Radio Shack 2740246).
My problem is that I don't know what a switch that'll do that is called, so I can't tell if items on Ebay / Amazon, etc. would fit the bill or not.
Any help greatly appreciated. 🙂
John
Look for switched 1/8 jacks. You can also mount a rocket 2P2T switch on the faceplate
Bear in mind cassette has equalization, so it would go after the head pre-amp or better before the volume knob.
Bear in mind cassette has equalization, so it would go after the head pre-amp or better before the volume knob.
Are you looking for line level automatic two way source selector?
https://www.newark.com/mcm-custom-audio/50-8396/automatic-two-way-source-selector/dp/29X0259
I think a 3.5mm switched stereo socket mount on the deck for bluetooth receiver will be most cost effective.
https://www.amazon.com/Bluetooth-Re...fef84&pd_rd_wg=wRDGa&pd_rd_i=B07GB7298K&psc=1
https://www.newark.com/mcm-custom-audio/50-8396/automatic-two-way-source-selector/dp/29X0259
I think a 3.5mm switched stereo socket mount on the deck for bluetooth receiver will be most cost effective.
https://www.amazon.com/Bluetooth-Re...fef84&pd_rd_wg=wRDGa&pd_rd_i=B07GB7298K&psc=1
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FM USB module - Google Search
These are cheap, $1.80 onwards.
They have a remote, and aux input. Even a preset type equalizer.
Rig the input to that from your existing unit, and the output to the amp.
No idea if the output matches the tape head, if yes, then the tape head wires can be used.
It has FM, USB, SD card, Bluetooth, aux on back, another mic input in front.
Needs 5 volt supply, 7805 is enough.
These are cheap, $1.80 onwards.
They have a remote, and aux input. Even a preset type equalizer.
Rig the input to that from your existing unit, and the output to the amp.
No idea if the output matches the tape head, if yes, then the tape head wires can be used.
It has FM, USB, SD card, Bluetooth, aux on back, another mic input in front.
Needs 5 volt supply, 7805 is enough.
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Or try this link:
FM USB module - Google Search
It is a representation, this item is generic here in India.
FM USB module - Google Search
It is a representation, this item is generic here in India.
It is also available in a ready box (different version), more expensive and better looking, to be connected to the 12V and amp...
If I understand your requirements correctly, one of these will do the job adequately:
LQSC Bluetooth Decoder Board for AUX Input Diy Modified Speaker Audio MP3 Stereo Audio Receiver Module|Digital-to-Analog Converter| - AliExpress
I use them myself to add BT capability to old/vintage radio sets.
LQSC Bluetooth Decoder Board for AUX Input Diy Modified Speaker Audio MP3 Stereo Audio Receiver Module|Digital-to-Analog Converter| - AliExpress
I use them myself to add BT capability to old/vintage radio sets.
Since it's going into a car, you might want this model. Has it's own power supply. LDAC, APTx etc.
https://www.aliexpress.com/item/4000683050752.html?spm=2114.13010708.0.0.3a994c4d3d35us
https://www.aliexpress.com/item/4000683050752.html?spm=2114.13010708.0.0.3a994c4d3d35us