I've finally got my EQ set where I want it, so that the response out of my BIG SPEAKERS is close enough to flat that no one will start bleeding out the ears, but I just noticed a new problem...
When I play a sample that's just "thump thump thump" and has literally NO frequency components above 60 hz, and I turn the bass knob on my mixer up (that's +15 dB/oct @ 80 hz) I hear this odd crackling through the tweeters, even though there's supposed to be no treble sound.
The mixer is not clipping. The amp is not clipping. Is it possible that enough bass sound is getting through to the tweeters to make them reach their xmax and then crackle? If so, this is HORRIBLE, and I need to immediately invest in some kind of high-order highpass filter in order to protect my poor little tweeters from being driven past their limit! <a href="http://www.speakerhole.com/product.cfm?ProductID=497" target="_new">THEY COST ME ALMOST $2 EACH!!!</a> 😀
Seriously though. This effect is being observed at a fairly low listening level. (Low enough that at 12:30 AM I'm not waking anybody up--maybe 1/10 watt) While I've had these speakers really cranked before, and they worked fine for the time I tested them, I would be very very say if I were playing for a party and suddenly lost all my treble sound... not that you need treble for parties, but it would still be embarassing, you know?
*sigh* So do I need another 4th-order butterworth or what?
When I play a sample that's just "thump thump thump" and has literally NO frequency components above 60 hz, and I turn the bass knob on my mixer up (that's +15 dB/oct @ 80 hz) I hear this odd crackling through the tweeters, even though there's supposed to be no treble sound.
The mixer is not clipping. The amp is not clipping. Is it possible that enough bass sound is getting through to the tweeters to make them reach their xmax and then crackle? If so, this is HORRIBLE, and I need to immediately invest in some kind of high-order highpass filter in order to protect my poor little tweeters from being driven past their limit! <a href="http://www.speakerhole.com/product.cfm?ProductID=497" target="_new">THEY COST ME ALMOST $2 EACH!!!</a> 😀
Seriously though. This effect is being observed at a fairly low listening level. (Low enough that at 12:30 AM I'm not waking anybody up--maybe 1/10 watt) While I've had these speakers really cranked before, and they worked fine for the time I tested them, I would be very very say if I were playing for a party and suddenly lost all my treble sound... not that you need treble for parties, but it would still be embarassing, you know?
*sigh* So do I need another 4th-order butterworth or what?
I'm using a first order butterworth at 4000Hz. and have also heard a similar sound. My sound is a little pop noise, almost like listening to a bad recording type noise during drum kicks and the like. Not sure what it is...my tweeter is the Audax TW010E1 and that has an Fs of 3000Hz.
Crossover details
Since I've sealed the boxes and I'm too lazy to open them back up again 😀 here's the webpage from which I ordered the crossovers:
http://www.speakerhole.com/product.cfm?ProductID=509
That's the crossover I bought two of. Since I know very, very little about filters, I don't know if it's a first-order or what... but I'd really like to be sure that I'm not going to blow the thing out by overextending it.
Thanks...
Since I've sealed the boxes and I'm too lazy to open them back up again 😀 here's the webpage from which I ordered the crossovers:
http://www.speakerhole.com/product.cfm?ProductID=509
That's the crossover I bought two of. Since I know very, very little about filters, I don't know if it's a first-order or what... but I'd really like to be sure that I'm not going to blow the thing out by overextending it.
Thanks...
In short, store bought crossovers are all but useless .... they are designed for nominal specs and in reality, the drivers used really wont be anything like the rather simplified completely unrealistic specs that the crossover was designed for.
Hehe
you're right, of course.... I'm applying about 24 dB of corrective EQ (Winamp's built-in EQ) in order to get this setup to sound right. 😛
Ah well... at least it sounds fairly good.
What I'll probably do next is build a custom active crossover / amp, and do triamping. 😀
you're right, of course.... I'm applying about 24 dB of corrective EQ (Winamp's built-in EQ) in order to get this setup to sound right. 😛
Ah well... at least it sounds fairly good.
What I'll probably do next is build a custom active crossover / amp, and do triamping. 😀
Ok, well using that crossover you are crossing your tweeter at 1.2 khz, wich isnt very recomended (on most of the tweeters)
You better modify this crossover in order to make ur HP cut at atleast 2.5khz, to be safe...
and you could change the caps... to film caps.
You better modify this crossover in order to make ur HP cut at atleast 2.5khz, to be safe...
and you could change the caps... to film caps.
The thing is that because the crossover was not designed for the drivers in question, we dont really know what the crossover points are.
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