In a box tuned to 35hz I modeled 128db with 700watts. Reached x-max @ 70hz and at 30hz a pair will reach x-max around 112db. If you play around with a box modeling program you can see the relationship between power and driver specifications for a given enclosure.
What are you trying to accomplish?
What are you trying to accomplish?
Any speaker can be tuned to go low, but a high FS, small Xmax, light cone like the 4015 won't put out much level down low.
Trying to get an F3 of 35Hz will lower the output considerably, with the 4015 Fs of 45 you will get better output per cubic foot with an Fb no lower than Fs in a much smaller box than 45 x45 x 23 if you want to use full power.
The 4015 really is designed more for a "full range" top box with an F3 around an octave up (64 Hz) from what you want.
I'd suggest getting some speakers suited for the range you desire, or prepare to be underwhelmed.
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"light cone like the 4015 won't put out much level down low"
139gm isn't very light in my book, and it has a 9mm x-max too.
http://www.eminence.com/pdf/Definimax_4015LF.pdf
Danley also recommends using a driver with a higher Fs than the cut-off point of the TH.
http://i56.photobucket.com/albums/g196/dkleitsch/4015LFvs15TBX100.gif
http://www.bcspeakers.com/product.php?id=52
A small TH with the driver Danley uses in the TH-115 vs the 4015LF. The Eminence has over twice the warranty, and is half the cost.
139gm isn't very light in my book, and it has a 9mm x-max too.
http://www.eminence.com/pdf/Definimax_4015LF.pdf
Danley also recommends using a driver with a higher Fs than the cut-off point of the TH.
http://i56.photobucket.com/albums/g196/dkleitsch/4015LFvs15TBX100.gif
http://www.bcspeakers.com/product.php?id=52
A small TH with the driver Danley uses in the TH-115 vs the 4015LF. The Eminence has over twice the warranty, and is half the cost.
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Eminence makes a lot of good products.
I use about 70 of them myself.
The 4015LF is a good woofer, the "LF" stands for "Low Frequency".
The 4015 is not as good as a woofer, but is capable of more upper output.
It has only 84 grams diaphragm mass, 5.9 mm Xmax, 11mm Xlim and a 45 Hz Fs.
Two very different speakers for different applications.
Cabinets that work well for the 4015LF will not work so well for the 4015.
The OP unfortunately purchased the wrong speaker for extended LF applications.
Art
all depends on how big and how low.
the model above 6 single loaded boxes~350 litres gives you 134db@x-max sine waves flat from 30>120hz.
you get at least 140 db normal program material.
i wouldn't put 2 drivers in one box.
*lighter cab
*easyer to handle
*more flexible
*with 3(or multyples of 3) you could setup a cardroid aray
the model above 6 single loaded boxes~350 litres gives you 134db@x-max sine waves flat from 30>120hz.
you get at least 140 db normal program material.
i wouldn't put 2 drivers in one box.
*lighter cab
*easyer to handle
*more flexible
*with 3(or multyples of 3) you could setup a cardroid aray
A bigger box allows for a lower F3, but at around the same SPL level as a smaller box.
A bigger BR box may allow too much excursion to allow for full power usage.
Do you have 4015, or 4015LF speakers?
wel the iron low says,pick any 2 of low,loud and small.
making a box 2x the size as my model above gives 3 db more @ the same x-max
ok
i need more info to help you
*how much power is availeble
*do you have a sound processor
*do you want 3 or 6 per side(or 6 in 1 place)
*must it be eminence,or can it be an other brand.
*budget?
*do you really need 30 hz(dubstep d&b)?
and take a look at this topic ,a lot of options there.
i'm sure we can figure something out
i need more info to help you
*how much power is availeble
*do you have a sound processor
*do you want 3 or 6 per side(or 6 in 1 place)
*must it be eminence,or can it be an other brand.
*budget?
*do you really need 30 hz(dubstep d&b)?
and take a look at this topic ,a lot of options there.
i'm sure we can figure something out
How many cubic feet of truck space will you allow for the speaker cabinets?
What is the maximum cabinet depth allowable ?
4000 watts total or per side ? 4000 watts in to what impedance?
30 Hz at how many dB down from 100 Hz ?
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