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Old 21st March 2007, 07:49 AM   #1
Foxx510 is offline Foxx510  Australia
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Default Which is the better response curve here....

Another newbie question. I'm making new enclosures for my 4412a speakers, just wondering which is the more desirable response curve for the 128h woofer. I'm guessing the first one, although the second one goes a bit lower. Any help much appreciated.

This
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or this
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Old 21st March 2007, 07:58 AM   #2
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In most rooms the 2nd one... you might want even a bit more droop. It also depends where in the room you are going to put them.

dave
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Old 21st March 2007, 08:07 AM   #3
Foxx510 is offline Foxx510  Australia
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Interesting, and thanks for the quick response. So I should tune it even lower? I can't get much more droop really without tuning really low even if I up the volume.
Thanks,
Adam
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Old 21st March 2007, 08:23 AM   #4
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What you want to do is try to match the droop with your room gain so that you end up with flat response.

dave
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Old 21st March 2007, 08:39 AM   #5
Foxx510 is offline Foxx510  Australia
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Ah ok. Given that I live in rental accommodation I guess I will have to comprimise on an "average" room response. I'll go with something along the lines of the second response curve.
Thanks.
Adam
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Old 21st March 2007, 11:12 AM   #6
sreten is offline sreten  United Kingdom
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Hi,

FWIW I like to drop the tuning until there is no obvious "knee" point.
That is the droop rate accelerates as you go down, good general matching.

This is usually Fvent around 0.7 of normal (half an octave) and in my
experience you do get the sound of half an octave of extra bass,
given the rest of the bass is more controlled and better damped.

Often the - 6dB points are very near, -10dB is always better.

For the above I'd probably go for 26 Hz to 28Hz.

/sreten.
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Old 21st March 2007, 11:46 AM   #7
Foxx510 is offline Foxx510  Australia
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Thanks sreten. I'll give 80liters at 26hz a try to start with. I guess I can always tune the port later if I want to experiment. I'll be back with more questions at a later date when it comes to the baffle layout.
Adam
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