Hey everybody. Just joined the forum and was looking for advice/help on a subwoofer design. I recently came into possesion of a Sundown audio X-8. It's a really beefy 8" driver. I am looking to maximize this subs potential and try something new so I am looking to build a horn encosure.
The limitations of the design are that it must fit into my cars trunk which is no problem, and I want it to fire through the ski hole. The ski hole has measurements of 20cm by 30cm giving 600cm^2 of mouth area. The goals are response into the mid/high twenties with as much efficiency as possible.
Here are the TS parameters:
Specifications X 8"D2 X 8" D4
RE (ohms) 4.00 ohm 6.00 ohm
FS (Hz) 46.770 hz 48.506 hz
Vas (L) 4.190 3.933
Qes 0.544 0.533
Qms 4.432 5.542
Qts 0.485 0.486
Le (mH)
BL (NA) 18.508 23.218
Mms (Grams) 158.641 g 157.131 g
Cms (uM/N) 72.995 68.515
Sens (1w/1m) 80.8 db 81.1 db
Xmax: 19
I am approximating Le to be around 3-3.5 since it is a large voicecoil for an 8, but it has a great amount of engineered inductance reduction measures taken including a full sleeve of copper throughout the magnet inner diameter.
I have been messing around in hornresp with a front loaded offset horn and it took some weirdness to get it looking good but the response looks promising.
Screenshots:
Tell me what you think
The limitations of the design are that it must fit into my cars trunk which is no problem, and I want it to fire through the ski hole. The ski hole has measurements of 20cm by 30cm giving 600cm^2 of mouth area. The goals are response into the mid/high twenties with as much efficiency as possible.
Here are the TS parameters:
Specifications X 8"D2 X 8" D4
RE (ohms) 4.00 ohm 6.00 ohm
FS (Hz) 46.770 hz 48.506 hz
Vas (L) 4.190 3.933
Qes 0.544 0.533
Qms 4.432 5.542
Qts 0.485 0.486
Le (mH)
BL (NA) 18.508 23.218
Mms (Grams) 158.641 g 157.131 g
Cms (uM/N) 72.995 68.515
Sens (1w/1m) 80.8 db 81.1 db
Xmax: 19
I am approximating Le to be around 3-3.5 since it is a large voicecoil for an 8, but it has a great amount of engineered inductance reduction measures taken including a full sleeve of copper throughout the magnet inner diameter.
I have been messing around in hornresp with a front loaded offset horn and it took some weirdness to get it looking good but the response looks promising.
Screenshots:



Tell me what you think