Hotdog

I just wanted to get a baseline because this will be how I judge my 4th order build when I get around to it. Still trying to determine weather or not to use 4 in a 4th order with a 5:1 ratio of 6 in a 4th order in about 3:1 ratio.

four 20 year old Fosgate RFR2215 on a Rockford Fosgate T40001bd @ 2ohm seeing about 3000rms. Sub up, port back, tuned at 39.75hz

Outlaw Score in the Kick Sealed on the Dash Pictures of scores I did not get on Video Port War I did do a 150db Meca style but score was reset before I could get a picture. A couple more runs Meca Style resulted in a 149.7 to 149.9 range. My peak for Meca was at 45hz

and you used the import folder function in Itunes?

Take your RPM up to 1500 and see if you drop. Alternators don't do full power at idle that is why a lot of competitors will ramp up their idle when in the lanes, so the Alt puts out more power.

Well I just got a term lab so if you ever want to get metered and feel like road tripping some weekend just message me.

Sweet.. you will get great use of them. That is still on my list of things to get. Maybe next month just to many good deals this month that I could not pass on. your only 1 hour and 43 minutes away from me

here is the one I got but if you wait to around Thanksgiving time you can pick it up for about 149.99 http://www.sears.com/craftsman-260-pc-mechanics-tool-set/p-00934260000P?prdNo=8&blockNo=8&blockType=G8

yea and the ratio thing is not hard to grasp. if you want a 3:1 ratio then your ported chamber needs to be 3x the volume of your sealed chamber. and you want to find the sealed chambers resonant peak frequency. you tune at the peak frequency

yea looks like they are sold out on all the bigger amps

you should be able to build a 3:1 ratio 4th order in that area. around 8ft3 sealed and 28ft3 ported

that is not for his vehicle it is an example of a 4th order I was thinking about for my self. Just a way to get his thought process going on his own.

also if you are doing a big ratio you will need good bracing. I have been talking with a few people and come to the conclusion that the best bet is to use 1 1/2 pipe with flanges on the ends. One thing that someone told me is that if you go to home depot you can get them cut to length that you need and they will re-thread them for you.

You design one.. I have been playing with a few idea on my vehicle. here is one of them, keep in mind I can not finish the box at this point since I have to build this into the vehicle then find my resonance of the sealed chambers. Then I can build the loading wall and port tuning will be where my resonant peak was. Is this using google sketchup? yes it is google sketch up. forgive me because I am not very good with it. Anyway if you look at this sketch up. This is what will have to be complete in your vehicle in your own variation of course. From this point you drop in your subs and get them wired up. Take your Dayton audio dats and hook the clips up to the speaker leads and run a sweep with the vehicle sealed up. When the sweep is complete you will know what you sealed resonant peak is, at this point you can now put up your loading wall and tune it to your resonant peak.

I would like to clarify that the bigger the ratio the more output you will get but with a narrower frequency range

You design one.. I have been playing with a few idea on my vehicle. here is one of them, keep in mind I can not finish the box at this point since I have to build this into the vehicle then find my resonance of the sealed chambers. Then I can build the loading wall and port tuning will be where my resonant peak was.

1: Get a Dayton Audio Dats from parts express to help with determining the resonant frequencies ----> http://www.parts-exp...tnumber=390-806 2: Depending on power you are using (more power less ratio) (less power more ratio) but typically a good ratio is either 2:1 or 3:1. 3: Build your shell for the 4th order enclosure and also the sealed portion of the enclosure then mount and wire your subs up. 4: Take your Dayton Audio Dats and run a resonance sweep on the sealed enclosure. What ever your Peak is, is where you want to tune your loading wall. 5: 4th orders are typically tuned higher because port velocity is responsible for your lower end 6: Port area is 2:1 or half your cone area 7: Try to keep subs on the same plane. if that is not possible then dont have parallel planes, a V formation is ok. 8: you can add poly Fill to the sealed enclosure to make a smaller sealed chamber this will also help keep your ported chamber smaller, if size of total enclosure is a issue. If anyone else with a little more knowledge cares to elaborate anymore on this or correct anything feel free

I would think the last think you would want is Kim Jong Un knowing that you been in his country checking his underground system. That guy is nut case.

Anyone read this article? http://www.telegraph.co.uk/news/worldnews/asia/northkorea/9296587/US-special-forces-parachuted-into-North-Korea.html wondering where all this is going to go

it an old incomplete log. Its getting changed here soon

Nice Explorer build there.. I like looking at Explorer build