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123Toid
(@123toid)
Illustrious Member Admin
Joined: 2 years ago
Posts: 400
30/07/2019 12:50 am  

@mikekel

Great question.  You would still design the enclosure the same way.  I am not familiar with Bass box pro, but it usually gives you the Q of the box.  Assuming a flat response, you would want t a Q of around 0.7  


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Douglas Blake
(@douglas-blake)
Estimable Member Registered
Joined: 3 months ago
Posts: 196
04/08/2019 1:29 pm  

Why would you want the sub-woofer to go up to 250hz?

This is what a 250hz tone sounds like .... https://szynalski.com/tone#250,v0.75

250hz is actually a mid-range frequency at the bottom of the male voice range.  The only time I've seen such a high crossover point in a "sub-woofer" was in a set of those icky plastic 2.1 Logitec speakers, and that was because the satellites couldn't go any lower without severe distortion. 

Don't forget a sub-woofer and a woofer are two completely different animals, both in structure and in use.

Sub-woofers usually stop at about 80 to 100 hz.  

This is what 80 hz sounds like .... https://szynalski.com/tone#80,v0.75   (You may need headphones to hear it, depending on your computer speakers.)

Generally in a 3 way system you want your woofer to get to about 250-400 hz (depending on make and model), the squacker (mid) should run from the top of the woofer up to about 2800-3300 hz where the tweeter takes over. 

In a 2 way system your mid-bass would go up to about 2400-3000 hz where the tweeter takes over.

 


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