Another beetle audio install - progress pics

[Dasdubber]

Thanks for the tip Jason...I am a little blind during this installation because I am yet to rewire the car (will be using watsons street works kit)....so it makes it 'ken hard to trial different positions for the components. I could probably adjust the mid angle up a bit to better parallel the tweeter (which I adjusted to aim just in front of the face of opposite person - put seats back in temporarily this arvo). I am hoping there will not be a significant frequency separation.

I had a fellow plot the specs of the mid driver into WinISD (box design software)...

t/s small specs include:
*Fs 60Hz
*Qts 0.62
*Vas 10.1L

His advice was that "it IS possible to port it, but 10L is still a very small enclosure. and you'll want either a very steep xover filter (eg: 24dB/oct) or set it a bit higher (eg: 90~100Hz) to avoid the cone unloading (ie: overexcurting due to loss of enclosure cushioning effect below the tuning frequency).

something like 10L tuned to 60Hz using a 2x5" port could be ok. i've never contemplated porting a midwoofer to know if what i see on the frequency-response graph will equate to good incar performance."

Thoughts of porting into the cabin if I do end up porting? (I'd port in the centre [under the centre of the dash])

[craigt-from-atl]

I'm actually just finishing up my audio install in my GTI, but this thread has pushed me into doing a fiberglass install. I installed a 'false floor' for my subs, amp, and crossover. Ended up taking up a bit more room than I anticipated. Fiberglass would help recoup every nook and cranny.

Excellent, excellent work!! :agree:

[Dasdubber]

Cheers Craig, hope the revamp of the GTI will turn out well!

I attempted to squeeze in a port (the round shape on the inner end [which will be cut out once f/g is done]) as close to 2x5in based on some calculations/estimations in a "box design" software.

I also attempted to reposition the woofer angle to better parallel the tweeter but unfortunately the limited room did not allow a better angle. Either the woofer hit the base, or when the bottom edge was brought out, my feet would hit whilst trying to get to the pedals. So this is a compromise I'll have to live with.



After checking fit (for the 50th time) resin was generously applied. And that was it for the weekend - more pics to come.


Once last pic just because I thought it looked cool

[Troy_Audio]

Yeah Baby..
That looks sick..
Nice job man.. Keep it up...
Oh you dont need to stop workin on the car cuz the weekend is over..lol
Peace Troy

[volkdent]

Looks great! Sorry I've not been on as much, I'm cruising from island to island in Thailand right now, and the beach has been more appealing than the computer!

Regarding the install, try the port and see, then you can always close it off. One of the keys will just making sure the actual inclosure doesn't color the sound to much, then work on the tuning. I'm really impressed with how it looks so far.

I had the same problem with the angulation and foot space, so I cut the outside flange of the speaker down, so just the needed material was left, and that decrease the diamter significantly. I'll look forward to your next post with much anticipation.

It takes alot of time, doesn't it!!!

Jason

[Dasdubber]

Thanks guys! Yep it sure does take a lot of time
You are right about the port too, I figured I'd put it in, and then experiment once done to see if it sounds better with it open or blocked.

Nonetheless, first few layers of matt and resin went down this arvo...


The circled area is where I had to adjust the inner skeleton to ensure my foot had adequate clearance when the clutch pedal is depressed - gotta think of these things sooner rather than later!


A couple more layers to go down in the next few days then prep for paint.

[Mudo]

Ooooh!! Babyyy!!! :agree: :agree:

Simply: amazing!!

I can't wait for the next post.