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OK yall. I'm trying to figure out what would do my MT 18" (that I bought off Tuan for an awesome price) good for daily and also the occasionaly comp. I will have around 1800-2k on tap. It is going in a 96' Jeep Grand Cherokee. I know my car's resonant freq now is 45hz. but I know this will change once the wall is in. I was thinking 8 cubes tuned to 36hz with about 175 sq inches of port and a ton of bracing. Let me know what yall think. thanks Posts: 31 | From: Northwest Georgia | Registered: May 2007
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so maybe i should go bigger? like 10-12 cubes? what is your tuning at? thanks Posts: 31 | From: Northwest Georgia | Registered: May 2007
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ok thanks man. I need to get moving on this wall. The woofer comes thur or fri ! anyone else have any more input?
Posts: 31 | From: Northwest Georgia | Registered: May 2007
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and is my tuning at 36hz sound good? so maybe ill go the middle ground. 11 cubes 250 sq. inches at 36. the build starts tomorrow Posts: 31 | From: Northwest Georgia | Registered: May 2007
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depending on what you want, shrinking the cabin volume will increase the transfer function of the vehicle.
If you shrink your cabin volume, then you'll most likely need a decent sized port to get down to 35hz
build your enclosure so that you can adjust your port length or the front wall relatively easy. It takes some more time to plan and build, but overall its worth it in the end
quote:Originally posted by FlexD2: depending on what you want, shrinking the cabin volume will increase the transfer function of the vehicle.
If you shrink your cabin volume, then you'll most likely need a decent sized port to get down to 35hz
build your enclosure so that you can adjust your port length or the front wall relatively easy. It takes some more time to plan and build, but overall its worth it in the end
how would I build my enclosure that way so I can adjust the port length? thanks
Posts: 31 | From: Northwest Georgia | Registered: May 2007
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well I would but im looking for more a daily driving setup and was thinking a more simple ported box...
Posts: 31 | From: Northwest Georgia | Registered: May 2007
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basically 12 to 14 cubes id start around 16 to 18 cubes so you can tinker with size and angles till you get the desired spl or sound you are looking for then you ask about port fairly simple 5 layers for the face make it just big enough to fit the 18 in say 24 inches then add to the port by adding mdf again untill you get to your desired sound and or spl
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quote:Originally posted by FlexD2: depending on what you want, shrinking the cabin volume will increase the transfer function of the vehicle.
If you shrink your cabin volume, then you'll most likely need a decent sized port to get down to 35hz
build your enclosure so that you can adjust your port length or the front wall relatively easy. It takes some more time to plan and build, but overall its worth it in the end :)
quote:Originally posted by FlexD2: depending on what you want, shrinking the cabin volume will increase the transfer function of the vehicle.
If you shrink your cabin volume, then you'll most likely need a decent sized port to get down to 35hz
build your enclosure so that you can adjust your port length or the front wall relatively easy. It takes some more time to plan and build, but overall its worth it in the end
how would I build my enclosure that way so I can adjust the port length? thanks
Apologies for not answering faster.. i'm not on here much anymore after i got told to reduce the amount of internet browsing at work lol.
anyway - there are numerous ways you can make things adjustable to suit requirements.
Making a port removable is as easy as making the port attach to a seperate plate and attaching to the box, or by making a port adjustable.
Basically its a matter of securing a piece of wood or a plastic port in such a manner that it is secured down with screws and/or brackets instead of building it into the box.
for example, my current big box (which i haven't worked on in a while) is totally removable from the vehicle, yet is composed of 80mm of wood for all walls.
Lateral thinking will get you where you want to go as well as not building everything together. Modularity is the key to being able to make changes as it suits.
I am personally not the type to build something permanently into a vehicle and then try for the best results after that. I prefer a system where i can make constant changes as i see fit and then when i'm close to what i want, then i will build a more solid environment and move towards the smaller gains.
There are numerous ways to get to what sound you want. Its just a matter of lateral thinking and doing things with a bit of a twist instead of following the tried and true.
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