Sound problem
in [Hardware]
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From: ElJerid on 9 Jan 2010 03:47 "ElJerid" <s.vanderhaeghen.nospam(a)telenet.be> wrote in message news:1YE_m.17349$jY5.8632(a)newsfe22.ams2... >I purchased a Samsung 2333HD and encounter a strange audio problem. Because >the internal speakers are of low quality, I also purchased a set of >Hercules 2.1 external speakers which I connect to the earphone output jack >of the display. In the menu, I select the output speakers, but no sound >comes out. I tested the speakers on anothher source (audio out from a video >camera) and they work fine. However, if I connect a pair of earphones on >the monitor, they also work fine. Why can't I get sound from the monitor to >the speakers ? Is it because an impedance misfit ? How can I solve the >problem ? > Thanks for any help. > Thanks for all the answers. I could find a solution to the problem, but still can' t understand the reason... First idea was the speakers jack was defective and I soldered another new one. The sesult however was the same. No sound if connected to the monitor audio output, and sound ok if connected to the PC audio output. Because this looked crazy, I tried a crazy solution... I found in my "connectors box" a lot of adaptors and did the following connection: from female monitor audio output to mini jack / female (big) microphone adaptor, from female (big) microphone to microphone male / female mini jack adaptor, and from the last one to the speakers (male) connector. And guess what, it worked ! So, just by putting 2 adaptors between monitor and speakers, the problem is solved !!! The only explanation I see is a very small difference at the jacks that are plugged into the monitor audio output. Sizes and diameter are exactly the same, but at the base of the (working) jack, there is a thin metal ring that is not present on the other one. Never heard that there were 2 incompatible "standards" for those mini jacks...
From: Paul on 9 Jan 2010 13:49 ElJerid wrote: > "ElJerid" <s.vanderhaeghen.nospam(a)telenet.be> wrote in message > news:1YE_m.17349$jY5.8632(a)newsfe22.ams2... >> I purchased a Samsung 2333HD and encounter a strange audio problem. Because >> the internal speakers are of low quality, I also purchased a set of >> Hercules 2.1 external speakers which I connect to the earphone output jack >> of the display. In the menu, I select the output speakers, but no sound >> comes out. I tested the speakers on anothher source (audio out from a video >> camera) and they work fine. However, if I connect a pair of earphones on >> the monitor, they also work fine. Why can't I get sound from the monitor to >> the speakers ? Is it because an impedance misfit ? How can I solve the >> problem ? >> Thanks for any help. >> > > Thanks for all the answers. > I could find a solution to the problem, but still can' t understand the > reason... First idea was the speakers jack was defective and I soldered > another new one. The sesult however was the same. No sound if connected to > the monitor audio output, and sound ok if connected to the PC audio output. > Because this looked crazy, I tried a crazy solution... I found in my > "connectors box" a lot of adaptors and did the following connection: from > female monitor audio output to mini jack / female (big) microphone adaptor, > from female (big) microphone to microphone male / female mini jack adaptor, > and from the last one to the speakers (male) connector. And guess what, it > worked ! So, just by putting 2 adaptors between monitor and speakers, the > problem is solved !!! > The only explanation I see is a very small difference at the jacks that are > plugged into the monitor audio output. Sizes and diameter are exactly the > same, but at the base of the (working) jack, there is a thin metal ring that > is not present on the other one. > Never heard that there were 2 incompatible "standards" for those mini > jacks... > > Three are 2.5mm and 3.5mm audio plugs. But I would have expected computer speakers to have a 3.5mm stereo plug on the end. If the amplified speakers had a 2.5mm plug on the end, they may have been intended for "music player" applications of some sort. (I wouldn't have known about the 2.5mm ones, except I saw some on the rack at Radio Shack a couple days ago. And thought at the time, "what a stupid idea" to introduce yet another size.) http://img.cytaninternational.com/ebay/img/dsdshop1_pimg/U81.jpg There are also some crack addicts, who have invented things like this. I think Creative used this idea, on some of their products. And Apple used a longer-than-normal plug on their microphones, just to make them incompatible with everything. (I have an Apple microphone, that I've never managed to get any sound into.) So there are a few variations on the 3.5mm stereo plug, to confuse matters. http://www.aftermarketcellular.com/cart/images/pcs/APLIPHONEHFA2.gif Paul
From: Paul on 9 Jan 2010 13:58
ElJerid wrote: > "ElJerid" <s.vanderhaeghen.nospam(a)telenet.be> wrote in message > news:1YE_m.17349$jY5.8632(a)newsfe22.ams2... >> I purchased a Samsung 2333HD and encounter a strange audio problem. Because >> the internal speakers are of low quality, I also purchased a set of >> Hercules 2.1 external speakers which I connect to the earphone output jack >> of the display. In the menu, I select the output speakers, but no sound >> comes out. I tested the speakers on anothher source (audio out from a video >> camera) and they work fine. However, if I connect a pair of earphones on >> the monitor, they also work fine. Why can't I get sound from the monitor to >> the speakers ? Is it because an impedance misfit ? How can I solve the >> problem ? >> Thanks for any help. >> > > Thanks for all the answers. > I could find a solution to the problem, but still can' t understand the > reason... First idea was the speakers jack was defective and I soldered > another new one. The sesult however was the same. No sound if connected to > the monitor audio output, and sound ok if connected to the PC audio output. > Because this looked crazy, I tried a crazy solution... I found in my > "connectors box" a lot of adaptors and did the following connection: from > female monitor audio output to mini jack / female (big) microphone adaptor, > from female (big) microphone to microphone male / female mini jack adaptor, > and from the last one to the speakers (male) connector. And guess what, it > worked ! So, just by putting 2 adaptors between monitor and speakers, the > problem is solved !!! > The only explanation I see is a very small difference at the jacks that are > plugged into the monitor audio output. Sizes and diameter are exactly the > same, but at the base of the (working) jack, there is a thin metal ring that > is not present on the other one. > Never heard that there were 2 incompatible "standards" for those mini > jacks... > > Three are 2.5mm and 3.5mm audio plugs. But I would have expected computer speakers to have a 3.5mm stereo plug on the end. If the amplified speakers had a 2.5mm plug on the end, they may have been intended for "music player" applications of some sort. (I wouldn't have known about the 2.5mm ones, except I saw some on the rack at Radio Shack a couple days ago. And thought at the time, "what a stupid idea" to introduce yet another size.) http://img.cytaninternational.com/ebay/img/dsdshop1_pimg/U81.jpg There are also some crack addicts, who have invented things like this. I think Creative used this idea, on some of their products. And Apple used a longer-than-normal plug on their microphones, just to make them incompatible with everything. (I have an Apple microphone, that I've never managed to get any sound into.) So there are a few variations on the 3.5mm stereo plug, to confuse matters. http://www.aftermarketcellular.com/cart/images/pcs/APLIPHONEHFA2.gif Paul |