Hey
I'm looking into converting my fully horn loaded 2-way into a 3-way, by adding a bassbin for 120hz and lower. Down to 40hz would be nice, but 60 (-3db) is OK. Due to only needing to go up to 120hz I can probably use more than one cab, as long as they stay within 60-70cm center to center distance.
Required parameters:
- size: 60 (wide) x 60 (deep) x 50cm (high) for double cab, or 120 (wide) x 60 (deep) x 50cm (high) for single cab. Smaller is also possible of course. Slight increases are OK.
- SPL: XMAX limited max SPL should be 126 (for each If using double cabs) or 132dB (single cab)
I'm looking into converting my fully horn loaded 2-way into a 3-way, by adding a bassbin for 120hz and lower. Down to 40hz would be nice, but 60 (-3db) is OK. Due to only needing to go up to 120hz I can probably use more than one cab, as long as they stay within 60-70cm center to center distance.
Required parameters:
- size: 60 (wide) x 60 (deep) x 50cm (high) for double cab, or 120 (wide) x 60 (deep) x 50cm (high) for single cab. Smaller is also possible of course. Slight increases are OK.
- SPL: XMAX limited max SPL should be 126 (for each If using double cabs) or 132dB (single cab)
Do you want to learn how to design one or are you looking for a finished design?
What solid angle does the subwoofer radiate into? In other words, will it be used close to a floor / ceiling / how many walls?
What solid angle does the subwoofer radiate into? In other words, will it be used close to a floor / ceiling / how many walls?
for 60Hz, you might scale Cerwin Vega's EL36/AB36 to 2/3 for a 12 inch driver giving a cabinet about 60cm x 60cm by 42cm. The 42cm dimension (normallly its "width") could be increased to 50cm external.
A 12 inch speaker with greater xmax than Kappa 12a could be used.
A 12 inch speaker with greater xmax than Kappa 12a could be used.
Have you checked cubo12/15 or tham12/15 designs? Tham is one of the best when it comes to spl vs size. Both designs are somewhat useful down to 40Hz (15" versions), better 50Hz and up.
Mth-30, also nice design. Lots of fun from single 12" driver.
Mth-30, also nice design. Lots of fun from single 12" driver.
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I think my Hornsub Jr might might also fit the bill and is a very simple build.
See William Cowan's Homepage
See William Cowan's Homepage
It looks like Delta12LFA would work quite well in the Hornsub Jr - when the height is modified so it fits inside. I think 15 mm plywood should be fine, too.
for 60Hz, you might scale Cerwin Vega's EL36/AB36 to 2/3 for a 12 inch driver giving a cabinet about 60cm x 60cm by 42cm. The 42cm dimension (normallly its "width") could be increased to 50cm external.
A 12 inch speaker with greater xmax than Kappa 12a could be used.
Sorry for the late reply! Was on vacation so not much time to check it all out. Thanks for all the suggestions! Lots of cabins that look like what I need.
Would it help to change the bandwidth from 40-120hz to 80-150hz -3dB? This makes more sense in retrospect. Probably easier to reach my SPL goal too.
Also relevant to the design, how do horns couple when adding a third one? What becomes the new relative acoustic center with which you will couple a third horn? For example, you have 2 horns arrayed , how will you know if the third horn will be able to couple to the first 2? Does this third horn (his center) have to be within 1/2th WL of the horn that is closest, the horn that is the fartest, or a point between those 2 (so a 'new' acoustic center for the coupled frequencies, laying somewhere between the 2 original acoustic centers)
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