Building today, check box plans.

MobileAudio219 · Post by **MobileAudio219** » Tue Mar 01, 2005 10:11 am

My cousin and I went to Lowes yesterday and bought everything we will need, today we are going to build it... Each box will house a single 12" kicker comp vr. Here are the plans if anybody wants to check them and see if they look alright.

18"h - 24"w - 17"d

Port will be 4" schedule 40 and will be 5.6" long

It should be tuned to right around 35(ish)hz right?

Also, since the the jbl 600.1 doesnt have a ssf I can use this right?

http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... 5752589705

I would set that at 30 or 35 then set the low pass on the amp to around 80ish?

Thanks, Justin

ridr4lif · Post by **ridr4lif** » Tue Mar 01, 2005 11:46 am

for a port length calculator...check out http://www.darkscience.com.au/caraudiohowto/slotcalc/

TEDD

William from NOLA · Post by **William from NOLA** » Tue Mar 01, 2005 12:51 pm

80 is a good spot usually. Make sure your mains are set for high pass at 80 as well (if you can that is). You won't need a sub sonic filter that high, I'd put your box into something like winISD and see how the driver will exurt at lower frequencies, if it does not go to it's full extention at 20 hz, you probably won't even need a ssf. I wouldn't really put a ssf higher than 27 Hz.

MobileAudio219 · Post by **MobileAudio219** » Tue Mar 01, 2005 2:52 pm

So you think it would be ok NOT to use a ssf? The box is going to be tuned to 35hz, and each sub will get around 300 watts each from a jbl 600.1.

It plays every type of music, including some low punchy rap/hip hop.

I can get the ssf if you there is a risk of hurting the subs/amp, but if you dont think its necessary then I won't even bother ordering one.

MobileAudio219 · Post by **MobileAudio219** » Thu Mar 03, 2005 2:13 am

Anybody.... Should I get a SSF or not?

William from NOLA · Post by **William from NOLA** » Thu Mar 03, 2005 10:23 am

Have you found the excursion curve for the driver? That will tell you.

MobileAudio219 · Post by **MobileAudio219** » Thu Mar 03, 2005 11:44 am

Ok... I started building around 1pm. Around 40 mins into it I am about half done... I'm taking my time and checking things over a bit, plus a made a last few last min adjustments... I'll try getting a few pics of the finish product (other then it being painted) tonight....

Wish me luck
justin

71buickfreak · Post by **71buickfreak** » Thu Mar 03, 2005 5:08 pm

yes, use the subsonic. Set it at 20hz. thats high enough. that port sounds a little short. have you checked it with a calc?

MobileAudio219 · Post by **MobileAudio219** » Fri Mar 04, 2005 10:22 am

Yeah I checked the port lenght with a few different programs, so I'm pretty sure its right... I'm going to use a ssf just to be safe... Also, I got all the pieces cut yesterday and went to screw it together and couldnt find my screws, so its still not done... Oh well, I'll finish it over the weekend..

spkrman · Post by **spkrman** » Fri Mar 04, 2005 3:49 pm

you need more port area

Those dims were PER sub?