[CFC]

Hey guys,

I bought an Ascendant Assassin 12" driver a while ago, and it's been collecting dust ever since as a future to-do project. In the mean time, it seems like the forums has gone through several "preffered" designs like the sonotubes and now the THT's (horns), so I'm looking on some feedback for a design.


I'd like to build a box (tube? THT/horn? sealed? vented?

) to replace the inadequate 8" sub which came as part of my little HTIB kit.

I am not looking for a room destroyer or anything like that, but rather a design that'll let me feel a bit of the low end cleanly.

My wife is pretty nice about my hobbies, so she wouldn't mind it too much if the box came up a bit large, but I guess I don't want to over-do it either. I think ideally I was hoping for an end table/coffee table replacement which could look somewhat inconspicuous in the room.


I modeled it, and came up with a vented design at around 4.5 cf with a port tuned to around 21Hz (I think that's right ... I'm going off memory, since I don't have it in front of me right now). I think at that size, I could build a table/box around 2x3x2 that could also accomodate a modest plate amp.


I've listed the driver specs below. Do you guys see anything I'm obviously missing? Any better design than a simple vented box with this worth looking into?

Znom 4 ohms

BL 12.3 n/a

Re 3.5 ohms

Sd 480 cm2

Qes .41

Qts .372

Qms 4.00

Fs 23.1 Hz

Mms 122 g

Vas 128 L

Xmax 15.5 mm

Le 3 mH

Rms 350W

Spl 87.8 dB 1W/1M

Voice Coil diam. 2 inch aluminum

Voice coil Single 4 ohm

Cone Paper pulp

Cutout diam. 11

Outer diam. 12 3/8

Mounting depth 6 1/8

Weight 15 pounds

Thanks for the help,

CFC

 

[MBentz]

You might find this link interesting:
http://forums.klipsch.com/forums/p/7...45.aspx#717845


I had a computer crash and so I lost the measurements of the final product, but we pretty much came within a dB of the predicted performance.


In summary, we did a 3.5cu ft enclosure tuned to ~20Hz with a Rhythmik Audio plate amp with a custom peaking highpass filter. I wanna say it was about 250W? This sub actually way surpassed the performance I was expecting.


Since then, I took the ported subs apart and built a tapped horn instead and am currently powering it with an XTi 1000. There are some minor things I would do differently if I did it again, but it still way surpasses the performance of the two ported boxes.

 

[dawg1161]

Not a box, With help from Steve Callas I built a pair of Sonosubs using this same subwoofer...


18" tube 48" long (6.8cft) ....6" tube 23" long for port (i believe tuned to 21hz.)


The thread is here in this forum.......Just a thought