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Post by jackpine on Oct 23, 2014 14:10:07 GMT -5
I can't answer your main question. I do know that blown tweeters are less common than in the past due to cleaner more powerful amps being readily available and better tweeter design. Don't go nuts though the newer tweeters can often be more expensive than in the past.
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DYohn
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Post by DYohn on Oct 23, 2014 14:13:00 GMT -5
"Usable output" or "usable Frequency Range?" What's the loudspeaker make/model?
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Post by brand on Oct 23, 2014 14:27:36 GMT -5
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Post by Gary Cook on Oct 23, 2014 14:29:24 GMT -5
Keeping it simple, the speaker sensitivity rating refers to its db output at 1 metre using 1 watt. From there it's simple maths to get an indication of its potential db output at any distance using any wattage. For example a 3 db increase requires double the wattage. From memory there's an on line calculator that will work it out, one of the guys might like to post up the link, or I'll do it when I get to a computer.
RMS is a continuous rating, so RMS watts are what an amp can output continuously. Simplistically (for Class A and AB amps) that's related directly to the size of its power supply transformer. Peak watts are, as the name implies, how many watts the amp can output for an instant. Simplistically (for Class A and AB amps) that's related directly to the size of its power supply capacitors. The same applies to speakers, RMS is how many watts they will handle continuously etc.
Cheers
Gary
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DYohn
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Post by DYohn on Oct 23, 2014 14:57:32 GMT -5
OK, that's a pro-sound rating and has to do with max dbSPL (measured at 1 meter) before the drivers become excursion limited. |
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Post by garbulky on Oct 23, 2014 15:49:18 GMT -5
What that means in useable output is that the speaker will put out an UNGODLY amount of sound. You will in no way be unsatisfied with how much the speakers can crank out. 128 db is nearly instant hearing damage.  As to RMS amp vs speakers. I've seen an XPR-2 powering a set of bookshelf speakers and an XPA-2 powering a speaker that can take a max of 50 watts so I can tell you just connecting an uber amp to a speaker with less power requirements is not going to hurt it. What will hurt it when you crank it for a continous amount of time past where it's sane for that kind of speaker. So yes, a party would count. Especially if you're giving more than the speaker can take. So if the speaker is unsupervised and taking way mor ethan the crossovers can do they will fail, fry the tweeters melt the voice coil etc. However, if you are sane then the likelihood of this happening is prettty low. www.dangerousdecibels.org/education/information-center/decibel-exposure-time-guidelines/ |
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