spec and box design for EOSONE 12 inch woofer

[nickthevoice]

Okay for building tapped horn

TAPPED HORN have same tuning type of TL box with 1/4 wavelength ?

example if I built 20hz Tapped horn I need 14 feet ?
do you stuffed the box to reduce length ?

how calculate the opening size ?

thanks in advance

nicK

 

[nickthevoice]

another little question !

do you know if anybody here drive her SUBWOOFER with pro amplifier ?

because if I build 4x 12 inch subwoofer I don't want buy 4 plate amplifier 250w.

exemple buying 2x 750 watts (2 ohm) pro amp good idea or not ?

thanks !

nicK

 

[littlemike]

Sure, that will work. Or, you could wire all four together as two paralleled pairs of woofers wired in series and drive them all with the same plate amp.

 

[nickthevoice]

I always have my other question !!!

for building tapped horn

Question1: TAPPED HORN have same tuning type of TL box with 1/4 wavelength ?

Question2: do you stuffed the box to reduce length or never STUFFED TAPPED HORN ?

Question3; how calculate the opening size ?

Question4: for MAX SPL it's TAPPED and FOLDED horn ?

thanks in advance

nicK

 

[nickthevoice]

Update about TAPPED HORN !

I build tapped horn with four EOSONE 12 inch.

the bass is very loud but not at the good place in room.

the problem is I can't move the box because I build this subwoofer outside the room and only the mouth is in the room. (in front corner)

anybody have TIPS to change "the BASS sweet spot" without move subwoofer ?
because for the moment all the bass is in the back corner of my room.

Room size = 22W x 14L x 8H

thanks in advance !

nicK

 

[GM]

I always have my other question !!!

for building tapped horn

Question1: TAPPED HORN have same tuning type of TL box with 1/4 wavelength ?

Question2: do you stuffed the box to reduce length or never STUFFED TAPPED HORN ?

Question3; how calculate the opening size ?

Question4: for MAX SPL it's TAPPED and FOLDED horn ?

thanks in advance

nicK

1) Well, a horn has a 1/4 WL fundamental, but must be 1/2 WL long to load all the way down.

2) Some damping of the walls at the closed end is desirable, same as a TL. See 'geitmans' work: http://s670.photobucket.com/albums/vv68/geitmans/spud/

3) Which opening? If you mean the mouth, I imagine the formulas can be rearranged to define it, but typically you just use the desired path-length, throat and flare and whatever it winds up being is what it is.

4) For max SPL you use the biggest horn you can with the right driver specs. A tapped horn, which must be folded to get the tap is apparently the best for max SPL in a given bulk.

GM

 

[GM]

Re: Update about TAPPED HORN !

anybody have TIPS to change "the BASS sweet spot" without move subwoofer ?

You will need to add a fairly serious diffusor system to deflect/smooth it out.

GM