Another beetle audio install - progress pics

[Troy_Audio]

Nice Jason..
That SS 805 is a choice amp..
I just got rid of afew so my buddies could run some oldschool power..
Nice setup.. If you get sick of the JL try Image Dynamics. The subs are sick.. small air space/low power & they pound w/SQ
Peace out Nice work everyone..

[Dasdubber]

Thanks Jason, so when you say resin to matt ratio as low as possible, this means using as little resin as possible right?

Regarding your port, that is a neat idea to vent to luggage area...I'm a little reluctact to drill/cut into all my new paint (Even though it will be hidden anyway)....would it be detrimental if I have to port it into the interior?

I've tried to maximise volume by wrapping the pods around in front of the pedals etc - won't be anywhere near as large as door volume but was hoping that would help a little.

Cheers for the tips/advice - I am pretty new to all this audio stuff so any help is appreciated.

[Troy_Audio]

You could always leave the front(nearest to the front of car) open
add some acoustic foam to brake down the standing waves.. thats kinda what i did . my Alpine Type X need lots of air aswell..
They sound good for now my imaging is off a bit but I think a good tuning will help alot..
the 1 thing you want to avoid is air from behind the speaker getting to the front ..this will make cansolaion problems..
aslong as you have a serface to brake down the waves you should be ok..
((You can also get standing waves in the door so adding "Egg crate" to the back wall of you speaker pod if you have room can help .. or acoustic foam)

By the way you plan on paint of cloth on the kicks?
if your doing cloth you can form it across the front and exit that way so you dont cut the car..
Spoze you could do the same with paint but you would add a ton of prep work..

peace troy

[Dasdubber]

Originally Posted by Troy_Audio

By the way you plan on paint of cloth on the kicks?
peace troy

Paint at the moment...depending on how I am going for time I may make a vinyl covered insert but that would mean a whole lot more fiddling around! We'll see what happens!

Cheers again for the advice.

[volkdent]

If you were to port to the interior, as Troy mentioned, you have to slow the waves coming off the back of the speaker. Really, you don't want ANY waves coming in from the back of the speaker, but sometimes you have to make sacrifices. You could also do all the calculations for volume and actually port the kpanel boxes correctly for the woofer. There are a bunch of specs on the instructions that come with the speakers. Some of them are Qas, Vas, and other such non-sense. Those numbers can be used to calculate the required box volumes and port lengths and styles. Ideally, get in touch with the manufacturer and explain the situation, that you have limited space. When you've completed the kpanel box, provided the MDF wood you've used is resin coated, you can just fill up the box with water and then measure the volume in a measuring cup, Tupperware type juice jugs are great as they usually have a graduated measurement on the side. If needed you can then add the ports, whether into the luggage area, or inside the car. These little things are all pretty variable, so let us know what you decide to do. I bet the speaker manufacturer can help you out a bunch. Also, if you can find a really good stereo shop who doesn't mind lending advice, they are a good source of info too.

Regarding resin/matt ratio, you just want to use as little resin as you can to actually wet the matt, too much resin just makes it weaker and heavier. Put at least 6 layers of matt down, to make it at least 1/4" thick. I then like to spray the entire interior of the box with spray on sound deadening material, followed by polyester filler, the same stuff cheap pillows are stuffed with. You can find it at any craft store or fabric store. Try out the sound at every step, because sometimes it sounds better with less than more. Consider covering sound reflective surfaces with material as well, as the reflective waves play havoc especially in the 4K hertz frequency and higher.

Jason

[volkdent]

Oh, I almost forgot, be really carefull with how much space you give you feet around the pods, they need more room than you think.

Jason

[Dasdubber]

Originally Posted by volkdent

You could also do all the calculations for volume and actually port the kpanel boxes correctly for the woofer. Jason

Thanks again for you help Jason, according to the specs, recommended sealed box volume for the MW160 woofer I will be using is between 7.1 and 21.1L. Here is a link to the specs:

http://www.dynaudio.com/eng/mobile/p.../DYN_MW160.pdf

I'll try and get in touch with manufacturer re. ports etc....7.1L may be achievable since I am using the space in front of the pedals etc, but 21.1L would be impossible!

[Dasdubber]

Retaped the interior this arvo and applied another two layers of fibreglass matt (trying to minimise resin use!).