I bought some 6 1/2 JL coaxial car car speakers and while they sound decent at lower levels, it seems like the tweeters are getting too much low end and are distorting. There is only a single cap on the tweeter, so it seems like the woofer is full range and the tweet only has a 6db slope.
I'm considering buying external crossovers with a 12db slope at a higher crossover point (maybe 4k). Would this be a good idea? Or are car speakers just shitty anyway?
I'm considering buying external crossovers with a 12db slope at a higher crossover point (maybe 4k). Would this be a good idea? Or are car speakers just shitty anyway?
As a cheap easy test, just lower the value of the tweeters capacitor, thus raising its crossover point.
as for buying a crossover, why not just build it yourself.
Its only two components.
I bought some avi car speakers cheap because they had no crossover, took me all of 5 minutes to make a passive 12db unit for them.
EDIT -
Plug in your speakers impedance and desired crossover frequency and your done..........
http://www.erseaudio.com/Second-Order-2-Way
as for buying a crossover, why not just build it yourself.
Its only two components.
I bought some avi car speakers cheap because they had no crossover, took me all of 5 minutes to make a passive 12db unit for them.
EDIT -
Plug in your speakers impedance and desired crossover frequency and your done..........
http://www.erseaudio.com/Second-Order-2-Way
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Yes I'll probably end up just making my own crossover... thanks. It's mostly the inductors that are hard to get unless you order from digikey.
You may not need much inductance.. in general, 4 ohm speakers want inductors of half the value compared with 8 ohm speakers, and mid/woofers like this are often not crossed low... unless you are planning to get a more substantial tweeter.
Make sure the tweeter is dynamic (has a resistance of 3 or so ohms) before making it a new crossover. You might try 12dB/octave at the same frequency and I'd be curious as to whether you could cross it a little lower this way and also roll the mid/woofer top end a little because they are often just run up until they run out which includes their breakup region.
Make sure the tweeter is dynamic (has a resistance of 3 or so ohms) before making it a new crossover. You might try 12dB/octave at the same frequency and I'd be curious as to whether you could cross it a little lower this way and also roll the mid/woofer top end a little because they are often just run up until they run out which includes their breakup region.
You should probably go to 18dB, a 12dB requires the phase to be reversed (and I doubt you can do that with a car speaker).
There are a few things that will affect this, and as an example if there is a 5cm spacing between the tweeter and the mid/woofer voice coil they will already be 180 degrees out of phase at 3,500Hz... but since their response will probably not be symmetrical to begin with, the crossover may not need to be symmetrical either. I've seen drivers like this where the tweeter wires could be accessed, yet there should still be room to move electrically if not.
"There are a few things that will affect this"
It's a co-ax, changing from 6dB to 12dB will cause a hole if you can't reverse the phase.
Most co-ax only have one lead brought out for the cap feeding the tweeter, so you can't reverve the phase. If the JL driver has both leads it won't be an issue.
It's a co-ax, changing from 6dB to 12dB will cause a hole if you can't reverse the phase.
Most co-ax only have one lead brought out for the cap feeding the tweeter, so you can't reverve the phase. If the JL driver has both leads it won't be an issue.
By lowering the tweeter crossover frequency, the difference will be less than the 45 degrees from going from 6 to 12dB/Oct. (Between 90 and 270 for a hole.)
Unfortunately these are probably less accurate than this to begin with.. it could even be an improvement. Still within trying for some woofer rolloff maybe?
Unfortunately these are probably less accurate than this to begin with.. it could even be an improvement. Still within trying for some woofer rolloff maybe?
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