Twin Eminence Delta 15LF in subwoofer

Hi

I have a couple of Eminence Delta 15LF's taken from a pair of bass horns. I plan to make a subwoofer that can provide a good amount of bass down to around 35-40 Hz. What kind of enclosure would be preferable for this? When put into winISD the size of the box required is generally pretty large.

Perhaps electronic equalisation is required to get a decent response down to this level (it is unlikely that they will need to be used at full power 2 x 500w RMS)

Cheers
 

Xoc1

Member
2008-11-08 8:25 pm
Devon UK
The Delta 15LF only has an xmax of 4.8mm it will not take anything like its power rating at the low frequencies you want.
The Eminence site shows a single driver in a 165 litre cabinet limited to 175W with a steep hi-pass set at 35Hz
http://www.eminence-speaker.com/pdf/cab-delta-15lfa.pdf.
Xmech is quite large, I would think that a manifold type reflex cabinet would be good. The 2 opposing drivers help to reduce distortion when xmax is exceeded.
http://www.diyaudio.com/forums/subwoofers/161804-manifold-subwoofer-labhorn.html
 

tb46

Member
2006-01-09 7:04 pm
Texas
Isobaric BP

Hi,

Using the isobaric arrangement will reduce the necessary volume, but, it will also reduce the available SPL. I have (mis-) used speakers before in a sonotube isobaric bandpass with some success.

Regards,
 

Attachments

  • Delta_15LF_BP_Iso.jpg
    Delta_15LF_BP_Iso.jpg
    119.6 KB · Views: 235