I ordered a Class D amp from ebay, and got it in the mail today. But I noticed something that I should have noticed earlier. The amp doesn't have a regular 3.5mm input. It has a 3-pin connector.
I'm assuming there must be some adapters that goes from 3-pin to aux. Even if there is an adapter, is there still a way that I could maybe splice a 3.5mm cable and somehow connect it to the amps input?
I'm assuming there must be some adapters that goes from 3-pin to aux. Even if there is an adapter, is there still a way that I could maybe splice a 3.5mm cable and somehow connect it to the amps input?
What are the 3 pins?
Right, Signal Ground/Return, Left?
It looks like a locking 0.1" pin pitch socket that needs a matching plug.
You need a plug with 3core attached. Otherwise you need all the components to make up a plug with connector blades and wire.
Alternatively,
cut away the plastic housing of the socket.
Solder your 3wire connection direct to the 3 pins.
Right, Signal Ground/Return, Left?
It looks like a locking 0.1" pin pitch socket that needs a matching plug.
You need a plug with 3core attached. Otherwise you need all the components to make up a plug with connector blades and wire.
Alternatively,
cut away the plastic housing of the socket.
Solder your 3wire connection direct to the 3 pins.
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tip = left channel
ring = right channel
sleeve = ground
You can splice a cable, but the wires inside may be too thin for good connection to the 3-pin terminal block. Larger wire and/or good strain relief are mandatory.
ring = right channel
sleeve = ground
You can splice a cable, but the wires inside may be too thin for good connection to the 3-pin terminal block. Larger wire and/or good strain relief are mandatory.
Even if i were to solder the wires directly to the tip of the pins? If so, how do you suggest I do? Buy a 3.5mm jack and wire it to a "custom" cable that is thicker?
I found this on ebay, any thoughts? What is that terminal block even called. It's thinner than a typical fan header that you would find in a pc.
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Sure, soldering the wires to the pins on the amp would be great.
I don't know a name for that connector than analog sound card connector.
I don't know a name for that connector than analog sound card connector.
The best approach would be to get the part number for the mating connector from the vendor. Alternatively, you can go through Digikey/Mouser and see if you can find the appropriate connector. That's a real chore, by the way.
Personally, I'd just solder wires to the bottom of the board and bring them out to connectors.
Tom
Personally, I'd just solder wires to the bottom of the board and bring them out to connectors.
Tom
I think that's a good approach too. But im a bit worried about the wires being able to touch eachother and interfere, depending on what angle the aux cable is leaning against. Considering that they would be so close to eachother. Is this something to worry about?
You don't want the wires able to short circuit with each other. Otherwise there is no worry.
That's why I mentioned good strain relief. For the open board shown in the first post, I would use a zip tie through a corner PCB mounting hole to hold the cable. That way there is no flexing at the wire connection.
That's why I mentioned good strain relief. For the open board shown in the first post, I would use a zip tie through a corner PCB mounting hole to hold the cable. That way there is no flexing at the wire connection.
Bet if you desolder, you'll find 3xnice holes to solder into... That'll melt the thinsulation on the gossimer threads and give you a good join... Wire as per other posts...
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Those connectors are ******** for audio.. Never liked them. I guess just desolder those pins and socket all at once and solder wire directly to that board.
You only need a few mm of exposed copper to make the connection. If only 2-3 mm of copper is exposed, you can likely make the connection such that the exposed copper will never touch. Then, as others point out, use a strain relief of sorts.
Tom
Even if i were to solder the wires directly to the tip of the pins? If so, how do you suggest I do? Buy a 3.5mm jack and wire it to a "custom" cable that is thicker?
I found this on ebay, any thoughts? What is that terminal block even called. It's thinner than a typical fan header that you would find in a pc.
It is a molex connector.
Cheap and cheerful, that's probably why it was used.
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