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Old 25th March 2010, 08:12 PM   #1
Boscoe is offline Boscoe  United Kingdom
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Default What, if any, crossover i should use?

I'm planning on making some floor standing speakers with two of THESE and THIS tweeter. I understand the crossover frequency is going to be quite high here so what should I go for? Should I have one, will it be that much better? Thanks

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Old 25th March 2010, 08:43 PM   #2
DcibeL is offline DcibeL  Canada
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Those are some small woofers for a floor standing speaker.

Yes, you should have a crossover.
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Old 25th March 2010, 08:46 PM   #3
DougL is offline DougL  United States
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The Minimum crossover is a capacitor on the tweeter to prevent it from being destroyed by base that it cannot reproduce.

Crossover points and crossover slopes are not straightforward.
Several answers may be workable. Depends on your goals and beliefs.

Good luck.

Doug
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Old 25th March 2010, 08:47 PM   #4
adason is offline adason  United States
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and they have pathetically low sensitivity

edit: I was refering to the woofers...DougL was too fast
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Old 25th March 2010, 08:53 PM   #5
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Given the likely hi XO point, i'd be looking at a tweeter with a physically smaller bezel so as to get the drivers closer togther.

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Old 25th March 2010, 08:59 PM   #6
Loren42 is offline Loren42  United States
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Quote:
Originally Posted by Boscoe View Post
I'm planning on making some floor standing speakers with two of THESE and THIS tweeter. I understand the crossover frequency is going to be quite high here so what should I go for? Should I have one, will it be that much better? Thanks

Boscoe
Well, ignoring the damage that bass will cause to the tweeter, the sound will not be very good without a crossover. The woofer will be distorted above 5 kHz, not to mention that the impedance will go to hell in a hen basket without a crossover.

A lot depends on what your budget is for the project. If you want any form of decent fidelity you will need a crossover and an L-Pad for the tweeter. The L-Pad should be a set of fixed resistors, not a rotary L-Pad. However, a rotary L-Pad could be used as a tool to dial in the exact level you desire and replace it with fixed resistors.

The cone breakup above 5 kHz may require a little extra crossover work if you try shooting for 2 kHz as the cross point. That also depends on what the polar response looks like, but now we are getting into a lot of details and if you want to get a good response from these drivers (or any others) you will find that you will be doing just that, sweating the details.

I just saw the driver impedance, too. Woofers are 8 Ω as is the tweeter. Two woofers in parallel will yield 4 Ω...

Last edited by Loren42; 25th March 2010 at 09:03 PM.
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