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#1
Posted to rec.audio.tech
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Speakers getting hot
Let me preface my stating I am a newbie and forgive for the poor
technical descriptions. I have a Boston Accoustics Digital Theater 6000. This is hooked to a PC (Gateway Destination) system that I had disconnected for awhile. The system has a center channel, 4 speakers and a subwoofer. Problem: The left speakers keep heating up to the point where the finally shutoff. I've switched wires and speakers. No matter what is plugged up into the left side after awhile the speaker heats up. As of right now the only ones I am sure that can play contionously are the subwoofer, center channel and right side speaker. All speakers are sitting out in the open are are well ventilated. All the speakers are plugged into the subwoofer. Speakers, subwoofer, PC and wires came as a unit. The subwoofer gets a little warm but it doesn't seem excessive. After the speakers cool off they can be played on the right side with no apparent problem. Any ideas as to what is wrong and how to repair? Thanks for your help. |
#2
Posted to rec.audio.tech
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Speakers getting hot
In article .com,
wrote: Let me preface my stating I am a newbie and forgive for the poor technical descriptions. I have a Boston Accoustics Digital Theater 6000. This is hooked to a PC (Gateway Destination) system that I had disconnected for awhile. The system has a center channel, 4 speakers and a subwoofer. Problem: The left speakers keep heating up to the point where the finally shutoff. I've switched wires and speakers. No matter what is plugged up into the left side after awhile the speaker heats up. As of right now the only ones I am sure that can play contionously are the subwoofer, center channel and right side speaker. All speakers are sitting out in the open are are well ventilated. All the speakers are plugged into the subwoofer. Speakers, subwoofer, PC and wires came as a unit. The subwoofer gets a little warm but it doesn't seem excessive. After the speakers cool off they can be played on the right side with no apparent problem. Any ideas as to what is wrong and how to repair? It sounds to me as if it's one of two general classes of problem: - The built-in amplifier may have one bad channel, which is feeding an excessively-strong (but inaudible) signal into the affected speaker. There might be a DC offset voltage present in the signal fed to the speaker (this would probably push the speaker's woofer cone forward or backward, and would result in excess current flow through the woofer voicecoil and lead to heat buildup) or there might be an ultrasonic oscillation which is overdriving and overheating the tweeter. - The PC may be feeding a signal to the speaker system's input which is causing problems e.g. oscillation or excessive high-frequency treble. Figuring out just what the "overheat" signal is, could probably be done fairly easily with an oscilloscope. I would guess that correcting it will require repairing the speaker system's DSP or amplifier... and with today's products, it's probably going to be cheaper to replace the whole thing than to pay for a repair. -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
#3
Posted to rec.audio.tech
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Speakers getting hot
Thanks for the help. One more question listed down below. I have
indeed switched speakers around, wires, etc. The manner in which it is connected eliminates the PC as the problem (at least I think it does). All the satellite speakers are connected to the woofer. The woofer is then connected by audio cables to the PC. I've switched both speakers and cables and determined that the problem involves the left speaker inputs of the subwoofer. I reconnected this system in hopes of selling it (for not much I know). I've got a 36'' monster Gateway PC/TV monitor, the PC and related accessories. While this setup is now dated I hate just to junk it. Everything works fine except for this problem I've just discovered. Maybe someone will just take the monitor off my hands at a garage sale. One last thought/question: Think I could get a replacement for this subwoofer relatively cheaply? I imagine it has to be a Boston woofer because the center channel controls everything and is attached with pronged receptacle to the woofer. Thanks again |
#4
Posted to rec.audio.tech
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Speakers getting hot
tkat wrote ...
One last thought/question: Think I could get a replacement for this subwoofer relatively cheaply? I imagine it has to be a Boston woofer because the center channel controls everything and is attached with pronged receptacle to the woofer. You need an exact replacement because of the high degree of integration between all the parts. Unless you can find somebody who has exactly the same model with a smashed satellite speaker, it seems highly unlikely that you can replace the main part (the subwoofer which also contains all the electronics). I would be amazed if you could fix this for less than what it is worth. |
#5
Posted to rec.audio.tech
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Speakers getting hot
wrote in message oups.com... I reconnected this system in hopes of selling it (for not much I know). I've got a 36'' monster Gateway PC/TV monitor, the PC and related accessories. While this setup is now dated I hate just to junk it. Everything works fine except for this problem I've just discovered. Maybe someone will just take the monitor off my hands at a garage sale. If you really want to sell all this as a set, I'd just pick up a cheap, $10 pair of speakers and tell any buyers that the original speakers quit working. If the buyer wants better speakers, let them go to Best Buy, or their favorite computer store, and let them foot the bill for a good set of speakers. I'm sure someone would want that TV/Monitor, since it would work with a newer computer. Where are you located? Maybe someone like me would be interested. :-) Jeff -- Remove icky phrase from email address to get a valid address. |
#6
Posted to rec.audio.tech
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Speakers getting hot
I'm located in Birmingham, AL
Jeff Findley wrote: wrote in message oups.com... I reconnected this system in hopes of selling it (for not much I know). I've got a 36'' monster Gateway PC/TV monitor, the PC and related accessories. While this setup is now dated I hate just to junk it. Everything works fine except for this problem I've just discovered. Maybe someone will just take the monitor off my hands at a garage sale. If you really want to sell all this as a set, I'd just pick up a cheap, $10 pair of speakers and tell any buyers that the original speakers quit working. If the buyer wants better speakers, let them go to Best Buy, or their favorite computer store, and let them foot the bill for a good set of speakers. I'm sure someone would want that TV/Monitor, since it would work with a newer computer. Where are you located? Maybe someone like me would be interested. :-) Jeff -- Remove icky phrase from email address to get a valid address. |
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