Can this be done, crossover right on the limit?

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The woofer will not suffer from being crossed over at 1500Hz.

It would be safer to cross over the tweeter at 3000Hz.

A separation in crossover frequencies of one octave as above is tolerable with shallow crossover filters.

For a more comprehensive answer, you would have to supply full details of your drivers.
 
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The woofer will be beaming at 1500Hz. This is probably the highest frequency that a 12" driver can be successfully crossed, and only if the tweeter is more directional. Of course there should be no harm in running it higher until you come up with a solution.
 
Tweeter FSU is 2k, so it is not really advisable to use it below that. Even then as stated before the 12” will be beaming at 1.5khz. And since it is a car audio subwoofer, it will probably not even go to that high very well. What are your requirements for a speaker? Probably some people can give you some good tips!
 
The tweeter is an overpriced version of the Visaton SC5 which costs around 10! euros not 25... Its a small tweeter with an fs around 2800 hz, and will be most likely playable at 4000 hz...
So no real partner for your woofer.
There's a speaker kit with this tweeter if you're still interested in it, its called "cheap trick 295" and you can find it here:


Strassacker, Komponenten: Lautsprecher, Frequenzweichen, Bauelemente.


Greets Swany.


P.s.: dont trust ultimately the speaker manufactores or what the stats the sites are telling you, a woofer with an frequency range up to 1500 hz does not necessarily mean that is also audible till 1500 hz, it just means jeah it "can" produce soooome tone up to this (even higher) but still its not really useable.
Speaker building is on one hand mostly evaluating what drivers fits the most together in which kind of enclosure...:-D.
 
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Half a lifetime ago, in the 60s, there was a design by KEF used in various products, like the original Celeste, incorporating an early B139 woofer (racetrack version of a 12" woofer) and a T15 dome tweeter. They were crossed at 1kHz, probably because the T15 was cleverly made and had a low resonance frequency. But it's been a while since then and expectations are higher.

These days, a 12" woofer (regardless of make and model) would be considered too large to radiate at 1kHz. It's more sensible to use it up to about 300-500Hz, and use a 3-5" midrange between that and the tweeter.
 
That's a 12" car sub.
I promise you the sound will be like mush well before 1.5kHz. They're fine for below a couple of hundred Hz, where the cone is still acting as a piston. Above that, the cone starts bending all over the place.

If I already had the 12" drivers, I'd be looking at a 3-4" full-range driver for a crossover in the 300Hz range.

Chris
 
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