I will be wiring a 3.5MM jack panel mount to my 2 channel amp. Each amp channel has 2 inputs; left speaker and ground and right speaker and ground. My question is, how do I split the ground wire coming for the jack panel. This is not a problem for the left and right inputs as they have their own leads. The ground only has one that needs to go into both the right and left channel inputs of the amp. Hope this makes sense.
Thank you in advance
Thank you in advance
In this case the input lead, after the socket, splits in two. Right hand and left hand channel. The input ground is the same point for both left and right. Not however the speaker ground point.
Your question is a little confusing the way it is worded, so you might want to clarify.
Normally inputs share a common ground, and if you look at the circuit board, you will probably find that even if it shows two input grounds, they are connected together by the circuit board traces, forming the common ground. Typical practice is to just run one ground wire from the jack to the board, although you could run two, but if you do, be sure to twist the ground and + of each pair, which helps reject interference/noise.
For speakers, a common ground is not always the case, especially in the small class-D amps like Tripath. In those cases, connecting L+R grounds together can ruin the amp. If you're planning on hooking up a 3.5 mm jack for speakers, it is not advised, and you're better off with some other arrangement.
Hope this helps.
--Buckapound
Normally inputs share a common ground, and if you look at the circuit board, you will probably find that even if it shows two input grounds, they are connected together by the circuit board traces, forming the common ground. Typical practice is to just run one ground wire from the jack to the board, although you could run two, but if you do, be sure to twist the ground and + of each pair, which helps reject interference/noise.
For speakers, a common ground is not always the case, especially in the small class-D amps like Tripath. In those cases, connecting L+R grounds together can ruin the amp. If you're planning on hooking up a 3.5 mm jack for speakers, it is not advised, and you're better off with some other arrangement.
Hope this helps.
--Buckapound
To clarify, there are spots on the amplifier, next to the speaker inputs, which allow the use of proprietary connectors which can be sodered to the board. These are used as alternate inputs to the inputs already on the board. I'm using these as I am running the 3.5mm jack mount away from the board. With the existing inputs, I would be limited to plugging in a 3.5mm audio directly to the board.
Hope this doesn't confuse any further.
Hope this doesn't confuse any further.
I may be confused, but when you say "speaker inputs", to me that means the connectors on the back of the loudspeaker cabinets, where the amplifier power is sent INTO the speaker. So in my world, an amplifier would have no "speaker inputs" because it has no speakers in it. An amplifier to me would have OUTPUTs for speakers. Connect the amp output to the speaker input.
In other words input and output always are labels from the point of view of the item they are on.
I am not sure, but it sounds to me like you MIGHT be using the term "input" to mean connector.
Or I may have missed the point entirely.
I guess to me the question is this: what are you connecting to what?
In other words input and output always are labels from the point of view of the item they are on.
I am not sure, but it sounds to me like you MIGHT be using the term "input" to mean connector.
Or I may have missed the point entirely.
I guess to me the question is this: what are you connecting to what?
OK, this may make it a bit easier to understand.
I purchased the following amp:
2x15W @ 4 Ohm TA2024 Class-D Audio Amplifier Board Only 320-330
Since I wont be using the RCA inputs, I needed to get the following screw terminals:
Two Conductor Screw Terminals for Amplifier Boards 10 Pcs. 320-3370
The source will be coming from an MP3 players 3.5MM connection and I will be using the following stereo panel mount jack:
3.5mm Stereo Panel Mount Jack 090-317
As the panel mount jack has 3 output leads, L, R and ground, where will I get the second ground wire which will connect to the screw terminal. For example, one terminal will get either the L input and the ground, but where will the required ground wire come from for the other terminal which has the R input. Do I just use 2 ground wires coming from the panel mount jack?
Once again, hope this is a bit more clear.
I purchased the following amp:
2x15W @ 4 Ohm TA2024 Class-D Audio Amplifier Board Only 320-330
Since I wont be using the RCA inputs, I needed to get the following screw terminals:
Two Conductor Screw Terminals for Amplifier Boards 10 Pcs. 320-3370
The source will be coming from an MP3 players 3.5MM connection and I will be using the following stereo panel mount jack:
3.5mm Stereo Panel Mount Jack 090-317
As the panel mount jack has 3 output leads, L, R and ground, where will I get the second ground wire which will connect to the screw terminal. For example, one terminal will get either the L input and the ground, but where will the required ground wire come from for the other terminal which has the R input. Do I just use 2 ground wires coming from the panel mount jack?
Once again, hope this is a bit more clear.
When in doubt, look at the circuit board. If you do, you will see that the two input grounds are really part of the same circuit board trace. If it's hard to see because it's obscured by some masking, then you can check with a voltmeter and you will find that they are one and the same. If you don't have a voltmeter, you should run right out and get one, as they're cheap and easy to get hold of and are the foundation of everything you need when working on electronics.
This means you really need to connect the input ground from your new jack to one or the other of the input grounds. If you're feeling iffy about this, you can run a small piece of wire from one input ground to the other, but if they test as being connected by the board traces, there's no need to do this.
BTW, enjoy your new TriPath. They really are pretty amazing in quality for the price. Be aware that they sound better after a little burn-in, in my experience.
--Buckapound
This means you really need to connect the input ground from your new jack to one or the other of the input grounds. If you're feeling iffy about this, you can run a small piece of wire from one input ground to the other, but if they test as being connected by the board traces, there's no need to do this.
BTW, enjoy your new TriPath. They really are pretty amazing in quality for the price. Be aware that they sound better after a little burn-in, in my experience.
--Buckapound
Buck, this is a huge help. Didn't assume this but makes total sense. This is my second Tri-path amp (previous 2x8watts) and it is amazing what you get for such a great price.
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