Sound problem
in [Hardware]
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From: ElJerid on 30 Dec 2009 04:21 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.
From: peter on 30 Dec 2009 11:11 Connect the speakers directly to the audio output on your computer peter -- If you find a posting or message from me offensive,inappropriate or disruptive,please ignore it. If you dont know how to ignore a posting complain to me and I will be only too happy to demonstrate :-) "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. >
From: Paul on 30 Dec 2009 12:28 ElJerid wrote: > 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. > > That monitor is like the Space Shuttle :-) Most adverts for it, don't do it justice in describing the feature set. Even the Samsung user manual, leaves a lot to be desired, but at least all the ports are pictured. http://downloadcenter.samsung.com/content/UM/200810/20081014104651656/BN59-00785B-01Eng.pdf http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=5256652&SRCCODE=WEBINK&cm_mmc_o=mH4CjCQztBB!%20mmVCjCECjCE Anyway, I like your theory about an impedance issue. The unit has 2 x 3W speakers inside. It would be relatively simple, to have the earphone jack on the side of the unit, cut off the speakers, and feed the amplifier output to the earphone port. Earphones might be 32 ohms. Perhaps to protect the tiny power amp inside the unit, they disable the amp if no load is detected. If you're not good with a soldering iron, you can try the following as a test case. Buy a "Y" cable at Radio Shack. Plug the headphones that work into one jack. Plug the Hercules amplified speakers into the other jack. See if the Hercules provide output. The idea, is to use the impedance of the headphones, to trick the thing into working. http://www.radioshack.com/product/index.jsp?productId=2103870 If it works that way, then obviously you're not going to like the tinny noise coming from the headphones all the time. You'd need to make up a custom audio cable, with a load resistor on each channel. For example, you could place a resistance of 33 ohms on each channel. That would provide the load that the analog power amp is looking for inside the monitor. Tip ----+----------------Tip (Left) | 33 ohm | Sleeve --+----------------Sleeve (Ground) | 33 ohm | Ring ----+----------------Ring (Right) (Male (Female plug) jack) A source of a male plug, with three terminals inside the plastic sleeve. http://www.radioshack.com/product/index.jsp?productId=2104062 A female jack, which should also have three terminals inside. http://www.radioshack.com/product/index.jsp?productId=2062461 33 ohm half watt resistors http://www.radioshack.com/product/index.jsp?productId=2062312 Wire. I buy wire from anywhere except Radio Shack. Use your best judgment. You need wire of a small enough gauge, to fit through the holes in the plug and jack terminals. Maybe 24 gauge would be good enough. The power the headphones would normally receive, would be on the order of 1 volt across 32 ohms, (V*V)/R = (1*1)/32 = 31mW. The half watt resistor should be able to handle this. (The Samsung manual is totally bereft of anything smacking of specs.) Working backwards, 0.5W = V**2 over R, the resistor could take about 4 volts across it, so the monitor shouldn't be able to burn the resistors. They wouldn't put four volts out on the headphone jack. You'll need a soldering iron, or some very careful wire twisting and electrical tape usage (ugh). You can make up an adapter to present a load and allow the external amplified speakers to work. I think your plan is a good one, and will allow you to enjoy all the derived audio sources the monitor is capable of extracting. Whether it is the analog TV inside the monitor, extracting audio from HDMI, accepting audio from the AV/component area of the unit and so on. The mixer inside the monitor, should be multiplexing all those sources before driving the earphone jack on the side of the monitor. Paul
From: peter on 30 Dec 2009 16:12 he does not have a DISPLAY problem He has a Sound problem Disconnecting the monitor from the sound source and plugging the speakers into the sound card directly gives him sound If he using the unit for TV with a Cable/satelite box he did not mention it. If he is using the unit for TV using a TV card on the computer he will still have sound. peter -- If you find a posting or message from me offensive,inappropriate or disruptive,please ignore it. If you dont know how to ignore a posting complain to me and I will be only too happy to demonstrate :-) > >>Connect the speakers directly to the audio output on your computer >> >>peter >> >>-- >>> > > Clever suggestion Peter, that will really solve the display output > problem :-) > > OP can also start watching tv, can't he/she :-)))
From: kony on 30 Dec 2009 22:45
On Wed, 30 Dec 2009 10:21:02 +0100, "ElJerid" <s.vanderhaeghen.nospam(a)telenet.be> wrote: >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. > I'd consider taking the monitor back for a refund, or an exchange at the very least... maybe it's just a faulty audio jack or something and the speaker audio cord's jack is slightly different than that of the headphones. |