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#1
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
I acquired an electronic dart board. It barks out
information about each shot in a loud voice that would bother other people in the house. There doesn't seem to be a way to control the volume. I was wondering whether I could just put a potentiometer in there to get a volume control. I was thinking the signal could go through pin one and two, with the third attached to the other side of the speaker. Would that be the correct way to do it? |
#2
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
Tobiah wrote:
I acquired an electronic dart board. It barks out information about each shot in a loud voice that would bother other people in the house. There doesn't seem to be a way to control the volume. I was wondering whether I could just put a potentiometer in there to get a volume control. I was thinking the signal could go through pin one and two, with the third attached to the other side of the speaker. Would that be the correct way to do it? Duct tape over the speaker works well too, from my experience with kids toys and a colleagues speakerphone. |
#3
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
On 3/01/2021 3:51 pm, Ralph Barone wrote:
Tobiah wrote: I acquired an electronic dart board. It barks out information about each shot in a loud voice that would bother other people in the house. There doesn't seem to be a way to control the volume. I was wondering whether I could just put a potentiometer in there to get a volume control. I was thinking the signal could go through pin one and two, with the third attached to the other side of the speaker. Would that be the correct way to do it? Duct tape over the speaker works well too, from my experience with kids toys and a colleagues speakerphone. I've used the tape-over approach on a simple piezo buzzer test box. Works well. geoff |
#4
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[OT] Adding volume control to electronic device
On 1/2/2021 9:46 PM, Tobiah wrote:
I acquired an electronic dart board.Â* It barks out information about each shot in a loud voice that would bother other people in the house.Â* There doesn't seem to be a way to control the volume.Â* I was wondering whether I could just put a potentiometer in there to get a volume control. Certainly. Have you opened it up already to see what possibilities there are to connect it? I was thinking the signal could go through pin one and two, with the third attached to the other side of the speaker.Â* Would that be the correct way to do it? Depends on what you consider pins 1 and 2 (I assume you're talking about the pot here), but I don't think you have it right anyway. The usual hookup is as a voltage divider -------------+ | ||| |||-------------- Guts ||| ||| Speaker ||| | --------------+---------------- Depending on the impedance of the loudspeaker, you'd probably want a fairly low value pot, 1000 ohms or so. Or if you have an electronics parts drawer or junk box, you could just try a fixed resistor in series with either speaker lead. Start with 100 ohms. If it's still too loud, use a higher value, if it's too quiet try a lower value. But if you want it to be adjustable, then a pot is the way to go. --------------------------------- -- For a good time, call http://mikeriversaudio.wordpress.com |
#5
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
In article , Tobiah wrote:
I acquired an electronic dart board. It barks out information about each shot in a loud voice that would bother other people in the house. There doesn't seem to be a way to control the volume. I was wondering whether I could just put a potentiometer in there to get a volume control. I was thinking the signal could go through pin one and two, with the third attached to the other side of the speaker. Would that be the correct way to do it? Yes. You can do this with a 1/4 watt 50 ohm wirewound pot and it will be just fine. Some people will tell you that you shouldn't do this because the speaker will see a higher impedance and consequently the frequently response will be affected. That's true, and even worse the low end will likely drop off faster as you turn the volume down, which is the exact opposite of what you'd want since your ears do the same thing. These people would tell you that the smart thing to do would be to intercept the audio before it gets to the final amplifier stage so you can put a pot on the input to the amplifier. They would be right; this is a much more elegant solution. But hell, this is a dart board, this is not hi-fi stuff. Use a 50 ohm pot. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#6
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
So how would I wire it? Would I just use pins 1 and 2 to put
the pot inline on one of the speaker leads? Does it matter which side of the speaker? I seems that I could also short both leads through pins 2 and 3 so that the signal tends to bypass the speaker completely. Or maybe there is a way to use all three pins to somehow make the signal path a more constant resistance. On 1/4/2021 4:31 PM, Scott Dorsey wrote: In article , Tobiah wrote: I acquired an electronic dart board. It barks out information about each shot in a loud voice that would bother other people in the house. There doesn't seem to be a way to control the volume. I was wondering whether I could just put a potentiometer in there to get a volume control. I was thinking the signal could go through pin one and two, with the third attached to the other side of the speaker. Would that be the correct way to do it? Yes. You can do this with a 1/4 watt 50 ohm wirewound pot and it will be just fine. Some people will tell you that you shouldn't do this because the speaker will see a higher impedance and consequently the frequently response will be affected. That's true, and even worse the low end will likely drop off faster as you turn the volume down, which is the exact opposite of what you'd want since your ears do the same thing. These people would tell you that the smart thing to do would be to intercept the audio before it gets to the final amplifier stage so you can put a pot on the input to the amplifier. They would be right; this is a much more elegant solution. But hell, this is a dart board, this is not hi-fi stuff. Use a 50 ohm pot. --scott |
#7
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
On 1/11/2021 1:04 PM, Tobiah wrote:
So how would I wire it?Â* Would I just use pins 1 and 2 to put the pot inline on one of the speaker leads?Â* Does it matter which side of the speaker?Â* I seems that I could also short both leads through pins 2 and 3 so that the signal tends to bypass the speaker completely.Â* Or maybe there is a way to use all three pins to somehow make the signal path a more constant resistance. I thought I wrote a reply to this a few days ago. Maybe you're just ignoring me, or it was my attempt at drawing a schematic using the keyboard that didn't look right. Depends on what you consider pins 1 and 2 (I assume you're talking about the pot here), but I don't think you have it right anyway. The usual hookup is as a voltage divider, with the two ends of the pot (pins 1 and 3 in your language) connected across the output that feeds the speaker, and the speaker connected between the wiper ( pin 2 - the one in the center) and pin 1. Depending on the impedance of the loudspeaker, you'd probably want a fairly low value pot, 1000 ohms or so. Or if you have an electronics parts drawer or junk box, you could just try a fixed resistor in series with either speaker lead. Start with 100 ohms. If it's still too loud, use a higher value, if it's too quiet try a lower value. But if you want it to be adjustable, then a pot is the way to go. [1]-----/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\------[3] ^ [2] -- For a good time, call http://mikeriversaudio.wordpress.com |
#8
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
Depends on what you consider pins 1 and 2 (I assume you're talking
about the pot here), but I don't think you have it right anyway. The usual hookup is as a voltage divider, with the two ends of the pot (pins 1 and 3 in your language) connected across the output that feeds the speaker, and the speaker connected between the wiper ( pin 2 - the one in the center) and pin 1. Depending on the impedance of the loudspeaker, you'd probably want a fairly low value pot, 1000 ohms or so. Or if you have an electronics parts drawer or junk box, you could just try a fixed resistor in series with either speaker lead. Start with 100 ohms. If it's still too loud, use a higher value, if it's too quiet try a lower value. But if you want it to be adjustable, then a pot is the way to go. [1]-----/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\------[3] ^ [2] Yeah, I failed to understand your previous ASCII art. It makes sense now. I clip the two leads going to the speaker, and connect the ones coming out of the device to pins 1 and 3, and connect the ones going to the speaker on pins 2 and 3 (or whichever way means clockwise will be louder). So it's like a little mixer between speaker and ground. Is this better than just clipping one speaker lead and hooking up the ends to pin 1 and 2, like a single variable value resistor? |
#9
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
On 11/01/2021 12:04 pm, Tobiah wrote:
So how would I wire it?Â* Would I just use pins 1 and 2 to put the pot inline on one of the speaker leads?Â* Does it matter which side of the speaker?Â* I seems that I could also short both leads through pins 2 and 3 so that the signal tends to bypass the speaker completely.Â* Or maybe there is a way to use all three pins to somehow make the signal path a more constant resistance. On 1/4/2021 4:31 PM, Scott Dorsey wrote: In article , TobiahÂ* wrote: I acquired an electronic dart board.Â* It barks out information about each shot in a loud voice that would bother other people in the house.Â* There doesn't seem to be a way to control the volume.Â* I was wondering whether I could just put a potentiometer in there to get a volume control.Â* I was thinking the signal could go through pin one and two, with the third attached to the other side of the speaker.Â* Would that be the correct way to do it? Yes.Â* You can do this with a 1/4 watt 50 ohm wirewound pot and it will be just fine. Some people will tell you that you shouldn't do this because the speaker will see a higher impedance and consequently the frequently response will be affected.Â* That's true, and even worse the low end will likely drop off faster as you turn the volume down, which is the exact opposite of what you'd want since your ears do the same thing. These people would tell you that the smart thing to do would be to intercept the audio before it gets to the final amplifier stage so you can put a pot on the input to the amplifier.Â* They would be right; this is a much more elegant solution. But hell, this is a dart board, this is not hi-fi stuff.Â* Use a 50 ohm pot. --scott Stuff a rag in it? ;-) Google "Adding volume control to electronic device" HTH |
#10
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
On 13/01/2021 12:18 am, gray_wolf wrote:
On 11/01/2021 12:04 pm, Tobiah wrote: So how would I wire it?Â* Would I just use pins 1 and 2 to put the pot inline on one of the speaker leads?Â* Does it matter which side of the speaker?Â* I seems that I could also short both leads through pins 2 and 3 so that the signal tends to bypass the speaker completely.Â* Or maybe there is a way to use all three pins to somehow make the signal path a more constant resistance. On 1/4/2021 4:31 PM, Scott Dorsey wrote: In article , TobiahÂ* wrote: I acquired an electronic dart board.Â* It barks out information about each shot in a loud voice that would bother other people in the house.Â* There doesn't seem to be a way to control the volume.Â* I was wondering whether I could just put a potentiometer in there to get a volume control.Â* I was thinking the signal could go through pin one and two, with the third attached to the other side of the speaker.Â* Would that be the correct way to do it? Yes.Â* You can do this with a 1/4 watt 50 ohm wirewound pot and it will be just fine. Some people will tell you that you shouldn't do this because the speaker will see a higher impedance and consequently the frequently response will be affected.Â* That's true, and even worse the low end will likely drop off faster as you turn the volume down, which is the exact opposite of what you'd want since your ears do the same thing. These people would tell you that the smart thing to do would be to intercept the audio before it gets to the final amplifier stage so you can put a pot on the input to the amplifier.Â* They would be right; this is a much more elegant solution. But hell, this is a dart board, this is not hi-fi stuff.Â* Use a 50 ohm pot. --scott Stuff a rag in it? ;-) Google "Adding volume control to electronic device" HTH Remember the old drive in movie theater speakers with the volume control? |
#11
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
gray_wolf wrote:
Remember the old drive in movie theater speakers with the volume control?= Those were 70V system. 70V constant power going down the cable, each tap has a step-down transformer, then an L-pad (not a simple pot but a three element pad so the transformer always sees an 8 ohm load) and a crappy speaker. Because they were all parallel loads, if the main cable was shorted by someone driving away without removing the speaker, it would take all of them down. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#12
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
"gray_wolf" wrote in message ... snip Remember the old drive in movie theater speakers with the volume control? Sure do! I had a um....habit....of driving off without putting them back on their stand. At one point I had about 20 of them. Now that's what I call Hi Fidelity ;-) Poly -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
#13
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
2021-01-13 / 19:52:40 (UTC +0100) / polymod:
"gray_wolf"Â* wrote in message ... snip Remember the old drive in movie theater speakers with the volume control? Sure do! I had a um....habit....of driving off without putting them back on their stand. At one point I had about 20 of them. Now that's what I call Hi Fidelity ;-) Due to the height of the stand? ;-) |
#14
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
On 14/01/2021 4:52 am, Scott Dorsey wrote:
gray_wolf wrote: Remember the old drive in movie theater speakers with the volume control?= Those were 70V system. 70V constant power going down the cable, each tap has a step-down transformer, then an L-pad (not a simple pot but a three element pad so the transformer always sees an 8 ohm load) and a crappy speaker. Not switched tapped transformers ? Because they were all parallel loads, if the main cable was shorted by someone driving away without removing the speaker, it would take all of them down. A bit like any singel speaker cable system in that regard ! geoff |
#15
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
On 13/01/2021 5:43 pm, geoff wrote:
On 14/01/2021 4:52 am, Scott Dorsey wrote: gray_wolfÂ* wrote: Remember the old drive in movie theater speakers with the volume control?= Those were 70V system.Â* 70V constant power going down the cable, each tap has a step-down transformer, then an L-pad (not a simple pot but a three element pad so the transformer always sees an 8 ohm load) and a crappy speaker. Not switched tapped transformers ? Because they were all parallel loads, if the main cable was shorted by someone driving away without removing the speaker, it would take all of them down. A bit like any singel speaker cable system in that regard ! geoff I ran the snack bar at the local drive-in when I was a kid. I don't recall any real speaker loss. I heard that driving off with the window rolled up and speaker inside would break the glass. I remember the tube power amp ran four 807s |
#16
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
"Phil W" wrote in message ... 2021-01-13 / 19:52:40 (UTC +0100) / polymod: "gray_wolf" wrote in message ... snip Remember the old drive in movie theater speakers with the volume control? Sure do! I had a um....habit....of driving off without putting them back on their stand. At one point I had about 20 of them. Now that's what I call Hi Fidelity ;-) Due to the height of the stand? ;-) No, the driver :-) Poly -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
#17
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
On 14/01/2021 2:39 pm, gray_wolf wrote:
On 13/01/2021 5:43 pm, geoff wrote: On 14/01/2021 4:52 am, Scott Dorsey wrote: gray_wolfÂ* wrote: Remember the old drive in movie theater speakers with the volume control?= Those were 70V system.Â* 70V constant power going down the cable, each tap has a step-down transformer, then an L-pad (not a simple pot but a three element pad so the transformer always sees an 8 ohm load) and a crappy speaker. Not switched tapped transformers ? Â*Because they were all parallel loads, if the main cable was shorted Â* by someone driving away without removing the speaker, it would take Â* all of them down. A bit like any singel speaker cable system in that regard ! geoff I ran the snack bar at the local drive-in when I was a kid. I don't recall any real speaker loss.Â* I heard that driving off with the window rolled up and speaker inside would break the glass. I remember the tube power amp ran four 807s The cable wasn't shorted then. geoff |
#18
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
On 14/01/2021 4:52 am, Scott Dorsey wrote:
gray_wolf wrote: Remember the old drive in movie theater speakers with the volume control?= Those were 70V system. 70V constant power going down the cable, each tap has a step-down transformer, then an L-pad (not a simple pot but a three element pad so the transformer always sees an 8 ohm load) "3 element pad" - wouldn't that be a T-Pad ? geoff |
#19
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
On 1/14/2021 10:02 PM, geoff wrote:
On 14/01/2021 4:52 am, Scott Dorsey wrote: gray_wolfÂ* wrote: Remember the old drive in movie theater speakers with the volume control?= Those were 70V system.Â* 70V constant power going down the cable, each tap has a step-down transformer, then an L-pad (not a simple pot but a three element pad so the transformer always sees an 8 ohm load) "3 element pad" - wouldn't that be a T-Pad ? Yes, or a "Pi"-pad. |
#20
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
"Phil W"Â* wrote in message ...
2021-01-13 / 19:52:40 (UTC +0100) / polymod: "gray_wolf"Â* wrote in message ... snip Remember the old drive in movie theater speakers with the volume control? Sure do! I had a um....habit....of driving off without putting them back on their stand. At one point I had about 20 of them. And 20 broken windows? :-) |
#21
Posted to rec.audio.pro
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[OT] Adding volume control to electronic device
"Trevor" wrote in message ... "Phil W" wrote in message ... 2021-01-13 / 19:52:40 (UTC +0100) / polymod: "gray_wolf" wrote in message ... snip Remember the old drive in movie theater speakers with the volume control? Sure do! I had a um....habit....of driving off without putting them back on their stand. At one point I had about 20 of them. And 20 broken windows? :-) LOL!!! Windows must have been made stronger back in the 70s ;-) Poly -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
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