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| Thread ID: 66918 | 2006-03-11 07:27:00 | PC Speakers' Subwoofer "Crackling" | hpratvfrk (9558) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 437411 | 2006-03-12 03:56:00 | No, a thump in a bad way. WITHOUT MUSIC ON. | hpratvfrk (9558) | ||
| 437412 | 2006-03-12 08:50:00 | i wonder if you have a loose power connection ? | tweak'e (69) | ||
| 437413 | 2006-03-12 17:14:00 | Not the problem. | hpratvfrk (9558) | ||
| 437414 | 2006-03-12 21:22:00 | OK...time to regroup here: Thumps are a signal of some sort...either intentional or accidental. Let's look at the unintentional ones first. 1) bad voltage regulator on the woofer board 2) collapsing capacitor in the amplifier 3) diode pushed over-voltage and flooding the preamp area 4) spurious voltage spikes anywhere on the board..or outside it too.. -- a. random spikes on electrical service to the home -- b. NOT having the audio pack on a spike eliminator, like the rest of the 'puter is. -- c. stray lightning strikes on your power grid....not likely... 5) somebody's using a BSA motorcycle with a Zener diode in your neighborhood or petting a cat with static-y fur. I vote for the first 4, but sub c. and 5) are not likely. If 5) proves to be the answer...you need some ferrite torus attenuators... :groan: try this: Disconnect the speaker amp from the 'puter sound card (either the onboard or accessory) and turn the amp on again..does it "thump" all alone without any help from the 'puter?...You have an internal problem in the speaker(s). If the sound quits..then it's the 'puter's sound card....simple... get back with the info...enquiring minds need to know.... BTW: have you replaced ANY of the original speaker with some others? The reason I ask is that these units are pretty conservative in wattage and if you put some really different speakers in the system, you might've gone too low or high in impedence and fried something...just a thought. :confused: (could be aliens sending ELF binary code too!) :D |
SurferJoe46 (51) | ||
| 437415 | 2006-03-12 21:45:00 | What do you mean by amp? These speakers are used with my computer... What's a puter sound card? I connect my speaker to the back of the computer. The speakers work, and so does the subwoofer, but it's just that the subwoofer has frequent "thumps" when there's no music on when the set of speakers are turned on. When I turn it off, there's obviously no "thumps" And for your BTW, I have replaced the factory speakers (they didn't work) with Cyber Acoustics speakers, then I changed to Philips 5.1 MMS460. Will that prove something? |
hpratvfrk (9558) | ||
| 437416 | 2006-03-12 22:09:00 | What do you mean by amp? These speakers are used with my computer . . . What's a puter sound card? I connect my speaker to the back of the computer . The speakers work, and so does the subwoofer, but it's just that the subwoofer has frequent "thumps" when there's no music on when the set of speakers are turned on . When I turn it off, there's obviously no "thumps" And for your BTW, I have replaced the factory speakers (they didn't work) with Cyber Acoustics speakers, then I changed to Philips 5 . 1 MMS460 . Will that prove something? OK . . . it's kinda this way . . . you are driving a powerful sub-woofie with a signal that comes from your sound card or the audio output jack that hooks to one . . . either it is an onboard (installed in the motherboard) or it is an add-on card that ccupies a slot that then sends the signal to the sub-woofie . That being said, the 'puter cannot in itself supply enough power to drive the low freqs at any appreciable volume at all on it's meager power supply, so it gets a "boost" by an amplifier that is built into the speaker setup somewhere . It is usually in the subwoofer that these amplifiers are installed as they have a pretty large compartment and from it (usually) the other speakers (2,4 or 5) attach . If you are plugging the amplifier of the speakers setup into a base recepticle or power supply (like you would plug in a lamp in the livingroom) then that's the power that is being used to drive the speakers . I say this, assuming that you have not in some way modified the system and have just the subwoofie in a line-out jack and the speakers in the rest of the output jacks on the back of your 'puter . That may not prove to be a good thing to do unless the subwoofie has the ability to run all by itself and does not need the load that the speaker USED TO provide for it . These systems, like I said, are minimal in tolerances to being fiddled with and you state that you have replaced the speakers already . Mis-matches of speakers can cause all sorts of havoc . . . not all the time, but this might just be the answer here . I suspect that you have mongrelized this somehow and I need more info . Tell me at least the color of the jacks you use for the sound outputs . Your: "When I turn it off, there's obviously no "thumps" makes a lot of sense to me too . . and that's what one of the tests was that I asked you to perform . . . so we have another clue to this mystery . I need more hints . . . What mode is the sound system? 2 . 1? 4 . 1? 5 . 1? 6 . 1? The "x . 1" is the designation telling me that there is a subwoofie installed . ) We probably don't need to know the opsys or what version of anti-spyware you are running . . . it is all academic for this problem . Maybe telling us what the name of the 'puter is will help . . . OK? (Dell, Commodore, Compaq? etc?) |
SurferJoe46 (51) | ||
| 437417 | 2006-03-13 19:27:00 | I suspect that you have mongrelized this somehow and I need more info . Tell me at least the color of the jacks you use for the sound outputs . Your: "When I turn it off, there's obviously no "thumps" makes a lot of sense to me too . . and that's what one of the tests was that I asked you to perform . . . so we have another clue to this mystery . I need more hints . . . What mode is the sound system? 2 . 1? 4 . 1? 5 . 1? 6 . 1? The "x . 1" is the designation telling me that there is a subwoofie installed . ) We probably don't need to know the opsys or what version of anti-spyware you are running . . . it is all academic for this problem . Maybe telling us what the name of the 'puter is will help . . . OK? (Dell, Commodore, Compaq? etc?) First of all, there's green,yellow/orangy and black . There's also two black plugs that look identical . My Speakers mode is 5 . 1 and my PC is Medion (German company) If you need any more specs, click my sig . |
hpratvfrk (9558) | ||
| 437418 | 2006-03-13 19:36:00 | Here's a detailed link to my sig C:\Program Files\Futuremark\3DMark05\systeminfo\SI.xml |
hpratvfrk (9558) | ||
| 437419 | 2006-03-13 20:17:00 | First of all, there's green,yellow/orangy and black. There's also two black plugs that look identical. My Speakers mode is 5.1 and my PC is Medion (German company) If you need any more specs, click my sig. OK..tell me WHERE you have things plugged in to>>> |
SurferJoe46 (51) | ||
| 437420 | 2006-03-14 00:57:00 | I have a surge protector, that's plugged into the wall... | hpratvfrk (9558) | ||
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