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#1
Posted to rec.audio.tech
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Layperson's question ok? Have I blown my speakers?
Hi, apologies to anyone annoyed by laypersons' questions here (I got
flamed here once before) but I really want to put the question to a community like this; the only alternative I know of is Yahoo Answers (home of "how is babby formed?"). I'm wondering if I've blown my speakers. There's no *constant* "bzzzzz" sound with all music I play, but I suspect I hear it very subtly in certain songs (I might be being paranoid), and I'm pretty sure I'm not hearing certain subtleties I once did. Here's the story: my speakers are Infinity Beta 40s, about 3 years old. I don't blast them; never really have. Infinity's "recommended power amplifier range" for them is "10 - 200 watts." My receiver is a 75 watt-per-channel Yamaha RX-497. Until doing it once when the system was turned on, my crawling baby daughter used to really love turning the Yamaha's big, tempting volume knob all the way up. Sure enough, one day I turned on the receiver (which was set to tuner) when the knob was turned all the way up. Of course it started blasting-- for the two seconds or so till I could turn it down. So, considering what my gear is, how likely is it that those few seconds (such an incident may have happened two or three times total) have meaningfully damaged my speakers? Here's a reference to some famous music to try to illustrate: I have the 2009 remasters of the Beatles' mono catalog. In "Taxman," there are those two "beats" (?) that come after lines like "let me tell you how it will be (beat/chord) (beat/chord) / There's one for you 19 for me (beat/chord) (beat/chord)." On those beats, it seems to buzz a bit, even at moderate volume. Is that an indication of speaker damage, or am I just freaking out and forgetting that it always sounded a little distorted there? If this little story is not enough to determine whether my speakers are likely damaged, then what's the best way to determine it? Thanks a lot for any advice as I fret over my very dear speakers. And I'll graciously pass on suggestions about placing my gear out of reach of children (for the kids' sake). After ignoring my instinct to do so, I have now made the responsible adjustments... |
#2
Posted to rec.audio.tech
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Layperson's question ok? Have I blown my speakers?
On Apr 22, 9:50*pm, ddartmedia wrote:
Hi, apologies to anyone annoyed by laypersons' questions here (I got flamed here once before) but I really want to put the question to a community like this; the only alternative I know of is Yahoo Answers (home of "how is babby formed?"). I'm wondering if I've blown my speakers. *There's no *constant* "bzzzzz" sound with all music I play, but I suspect I hear it very subtly in certain songs (I might be being paranoid), and I'm pretty sure I'm not hearing certain subtleties I once did. Here's the story: *my speakers are Infinity Beta 40s, about 3 years old. *I don't blast them; never really have. *Infinity's "recommended power amplifier range" for them is "10 - 200 watts." *My receiver is a 75 watt-per-channel Yamaha RX-497. *Until doing it once when the system was turned on, my crawling baby daughter used to really love turning the Yamaha's big, tempting volume knob all the way up. *Sure enough, one day I turned on the receiver (which was set to tuner) when the knob was turned all the way up. *Of course it started blasting-- for the two seconds or so till I could turn it down. So, considering what my gear is, how likely is it that those few seconds (such an incident may have happened two or three times total) have meaningfully damaged my speakers? Here's a reference to some famous music to try to illustrate: *I have the 2009 remasters of the Beatles' mono catalog. *In "Taxman," there are those two "beats" (?) that come after lines like "let me tell you how it will be (beat/chord) (beat/chord) / There's one for you 19 for me (beat/chord) (beat/chord)." *On those beats, it seems to buzz a bit, even at moderate volume. *Is that an indication of speaker damage, or am I just freaking out and forgetting that it always sounded a little distorted there? If this little story is not enough to determine whether my speakers are likely damaged, then what's the best way to determine it? Thanks a lot for any advice as I fret over my very dear speakers. And I'll graciously pass on suggestions about placing my gear out of reach of children (for the kids' sake). *After ignoring my instinct to do so, I have now made the responsible adjustments... I generally listen to them with reduced highs, like in am radio. It's easier to hear hf buzz if there is Less source highs that cover up the buzz. Greg |
#3
Posted to rec.audio.tech
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Layperson's question ok? Have I blown my speakers?
G wrote:
On Apr 22, 9:50 pm, ddartmedia wrote: Hi, apologies to anyone annoyed by laypersons' questions here (I got flamed here once before) but I really want to put the question to a community like this; the only alternative I know of is Yahoo Answers (home of "how is babby formed?"). I'm wondering if I've blown my speakers. There's no *constant* "bzzzzz" sound with all music I play, but I suspect I hear it very subtly in certain songs (I might be being paranoid), and I'm pretty sure I'm not hearing certain subtleties I once did. Here's the story: my speakers are Infinity Beta 40s, about 3 years old. I don't blast them; never really have. Infinity's "recommended power amplifier range" for them is "10 - 200 watts." My receiver is a 75 watt-per-channel Yamaha RX-497. Until doing it once when the system was turned on, my crawling baby daughter used to really love turning the Yamaha's big, tempting volume knob all the way up. Sure enough, one day I turned on the receiver (which was set to tuner) when the knob was turned all the way up. Of course it started blasting-- for the two seconds or so till I could turn it down. So, considering what my gear is, how likely is it that those few seconds (such an incident may have happened two or three times total) have meaningfully damaged my speakers? Here's a reference to some famous music to try to illustrate: I have the 2009 remasters of the Beatles' mono catalog. In "Taxman," there are those two "beats" (?) that come after lines like "let me tell you how it will be (beat/chord) (beat/chord) / There's one for you 19 for me (beat/chord) (beat/chord)." On those beats, it seems to buzz a bit, even at moderate volume. Is that an indication of speaker damage, or am I just freaking out and forgetting that it always sounded a little distorted there? If this little story is not enough to determine whether my speakers are likely damaged, then what's the best way to determine it? Thanks a lot for any advice as I fret over my very dear speakers. And I'll graciously pass on suggestions about placing my gear out of reach of children (for the kids' sake). After ignoring my instinct to do so, I have now made the responsible adjustments... I generally listen to them with reduced highs, like in am radio. It's easier to hear hf buzz if there is Less source highs that cover up the buzz. Greg Could be a woofer; could be a tweeter. Could be your paranoia. Find a tunable oscillator program on the 'net, hook your computer sound card up to your stereo if it isn't already, and use the oscillator to run a slow frequency sweep from 20 or 30 Hz up to 4 or 5 kHz into your speakers, one at a time. Turn the level up enough so that if there's a problem, you will excite it. But don't get carried away; loud sine waves can damage tweeters which never see anything like that in real music. You will probably excite rattles in your room at low frequencies; do not confuse those with buzzes / rattles coming from the woofer (or tweeter, at higher frequencies) under test. If you can excite a buzz or rattle in a woofer or tweeter at reasonable levels this way, that woofer or tweeter is damaged. If not, not. A purist would advise you to replace both woofers or tweeters if you find one of them damaged. You sound like a purist, or careful listener, so take that advice. Otherwise you'll be noticing subtle differences between your channels that will slowly drive you crazy and send you to the loony bin. The new driver will not match up with the 3 year older one, if you're a careful listener, before you're old and slowly going deaf from the ringing in your ears. ;-( Fred |
#4
Posted to rec.audio.tech
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Layperson's question ok? Have I blown my speakers?
On 4/23/2011 2:54 AM, Fred wrote:
G wrote: On Apr 22, 9:50 pm, wrote: Hi, apologies to anyone annoyed by laypersons' questions here (I got flamed here once before) but I really want to put the question to a community like this; the only alternative I know of is Yahoo Answers (home of "how is babby formed?"). I'm wondering if I've blown my speakers. There's no *constant* "bzzzzz" sound with all music I play, but I suspect I hear it very subtly in certain songs (I might be being paranoid), and I'm pretty sure I'm not hearing certain subtleties I once did. Here's the story: my speakers are Infinity Beta 40s, about 3 years old. I don't blast them; never really have. Infinity's "recommended power amplifier range" for them is "10 - 200 watts." My receiver is a 75 watt-per-channel Yamaha RX-497. Until doing it once when the system was turned on, my crawling baby daughter used to really love turning the Yamaha's big, tempting volume knob all the way up. Sure enough, one day I turned on the receiver (which was set to tuner) when the knob was turned all the way up. Of course it started blasting-- for the two seconds or so till I could turn it down. So, considering what my gear is, how likely is it that those few seconds (such an incident may have happened two or three times total) have meaningfully damaged my speakers? Here's a reference to some famous music to try to illustrate: I have the 2009 remasters of the Beatles' mono catalog. In "Taxman," there are those two "beats" (?) that come after lines like "let me tell you how it will be (beat/chord) (beat/chord) / There's one for you 19 for me (beat/chord) (beat/chord)." On those beats, it seems to buzz a bit, even at moderate volume. Is that an indication of speaker damage, or am I just freaking out and forgetting that it always sounded a little distorted there? If this little story is not enough to determine whether my speakers are likely damaged, then what's the best way to determine it? Thanks a lot for any advice as I fret over my very dear speakers. And I'll graciously pass on suggestions about placing my gear out of reach of children (for the kids' sake). After ignoring my instinct to do so, I have now made the responsible adjustments... I generally listen to them with reduced highs, like in am radio. It's easier to hear hf buzz if there is Less source highs that cover up the buzz. Greg Could be a woofer; could be a tweeter. Could be your paranoia. Find a tunable oscillator program on the 'net, hook your computer sound card up to your stereo if it isn't already, and use the oscillator to run a slow frequency sweep from 20 or 30 Hz up to 4 or 5 kHz into your speakers, one at a time. Turn the level up enough so that if there's a problem, you will excite it. But don't get carried away; loud sine waves can damage tweeters which never see anything like that in real music. You will probably excite rattles in your room at low frequencies; do not confuse those with buzzes / rattles coming from the woofer (or tweeter, at higher frequencies) under test. If you can excite a buzz or rattle in a woofer or tweeter at reasonable levels this way, that woofer or tweeter is damaged. If not, not. A purist would advise you to replace both woofers or tweeters if you find one of them damaged. You sound like a purist, or careful listener, so take that advice. Otherwise you'll be noticing subtle differences between your channels that will slowly drive you crazy and send you to the loony bin. The new driver will not match up with the 3 year older one, if you're a careful listener, before you're old and slowly going deaf from the ringing in your ears. ;-( Fred I would add to that, using the balance control, check one speaker at a time, which will make it easier to figure out where the problem (if any) is. Regards, Tim Schwartz Bristol Electronics |
#5
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just put a dvd to use it once a week |
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