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View Full Version : Box for the ED8 complete *pics*



JLJunkieMX107
01-12-2008, 02:18 AM
Got the box for the ED8 finished tonight, well nearly done. Still need to cut the hole and carpet it. On with the pics.
http://i197.photobucket.com/albums/aa32/Codyford87/Box%20Pics/DD10082.png



http://i197.photobucket.com/albums/aa32/Codyford87/Box%20Pics/DSC07773.jpg




http://i197.photobucket.com/albums/aa32/Codyford87/Box%20Pics/DSC07774.jpg





http://i197.photobucket.com/albums/aa32/Codyford87/Box%20Pics/DSC07775.jpg




http://i197.photobucket.com/albums/aa32/Codyford87/Box%20Pics/DSC07777.jpg



http://i197.photobucket.com/albums/aa32/Codyford87/Box%20Pics/DSC07776.jpg



http://i197.photobucket.com/albums/aa32/Codyford87/Box%20Pics/DSC07778.jpg



http://i197.photobucket.com/albums/aa32/Codyford87/Box%20Pics/DSC07779.jpg




http://i197.photobucket.com/albums/aa32/Codyford87/Box%20Pics/DSC07780.jpg

SeanDub
01-12-2008, 02:23 AM
Why does the port area change throughout the port length?

JLJunkieMX107
01-12-2008, 02:27 AM
Its a design that rich(stratus) gave me. It's some sort of a tapered transmission line.

JLJunkieMX107
01-12-2008, 02:55 AM
I dont even have the sub yet. Should be getting it next week and cant wait to hear it. Now to find a plate amp.

SeanDub
01-12-2008, 03:34 AM
Yeah, it looked like a T line, but I didn't understand the discrepancy in port area

BuckyBoy
01-12-2008, 03:43 AM
Looks good. Nice build.

Immacomputer
01-12-2008, 12:06 PM
Looks nice. Let us know how it sounds.

As for an amp, partsexpress has that Dayton 240wrms amp that's pretty nice. It's a little big for that sub but it's only $100 and most other/smaller plate amps almost cost as much. It is large at almost 10" square at the outside and a cutout of 8.5" square.

tapout
01-12-2008, 12:15 PM
I can dig it.


Looks nice. Let us know how it sounds.

As for an amp, partsexpress has that Dayton 240wrms amp that's pretty nice. It's a little big for that sub but it's only $100 and most other/smaller plate amps almost cost as much. It is large at almost 10" square at the outside and a cutout of 8.5" square.
link?

mile098
01-12-2008, 12:18 PM
looks good, but x2 on the port question?

Immacomputer
01-12-2008, 12:22 PM
That was already covered -- it's a tapered transmission line and not a ported enclosure and that is not a port. Tapered transmission lines have the line taper from one end to the other.

Oh, and the sale ended on that amp:
http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=300-804

mile098
01-12-2008, 12:29 PM
i know its a T-line just dont know the expression in english for the tunnel/port what ever u call it...every tline design i saw b4 didnt have 'irregularities' in teh tunnel area

JLJunkieMX107
01-12-2008, 12:30 PM
I think we have a couple old half stacks in the garage so I may just steel the amp out of those. Now I am debating on what to finish it with. Possibly black piano paint.

Louisiana_CRX
01-12-2008, 12:31 PM
That ED should sound nice in there :)

JLJunkieMX107
01-12-2008, 12:32 PM
i know its a T-line just dont know the expression in english for the tunnel/port what ever u call it...every tline design i saw b4 didnt have 'irregularities' in teh tunnel area

Its a tapered t-line, meaning at the beginning it is smaller and tapers to a larger width as it gets longer. It is similar to a horn(i say similar for comparison purposes but in reality they are quite different)

lilmaniac2
01-12-2008, 12:34 PM
since you did the 45s i dont see why you didnt sand the edges of the port ends

Immacomputer
01-12-2008, 12:39 PM
i know its a T-line just dont know the expression in english for the tunnel/port what ever u call it...every tline design i saw b4 didnt have 'irregularities' in teh tunnel area

Haha, my bad for not seeing that you're from Croatia. Here is the definition for taper:
http://dictionary.reference.com/search?q=taper

That should make things a little more clear. Transmission line enclosures will often have a tapered or expanding line to help control upper order harmonics and standing waves in the higher frequencies. This will have an effect on output but will clean up the sound some. I don't really see a need for a sub t-line but it's not really going to hurt it. It's pretty standard when doing full range drivers though.

JLJunkieMX107
01-12-2008, 12:45 PM
since you did the 45s i dont see why you didnt sand the edges of the port ends

What im using it for it really wouldnt make a difference. I still have to hit all the edges with the router.

lilmaniac2
01-12-2008, 12:46 PM
round over bit?

JLJunkieMX107
01-12-2008, 12:47 PM
Haha, my bad for not seeing that you're from Croatia. Here is the definition for taper:
http://dictionary.reference.com/search?q=taper

That should make things a little more clear. Transmission line enclosures will often have a tapered or expanding line to help control upper order harmonics and standing waves in the higher frequencies. This will have an effect on output but will clean up the sound some. I don't really see a need for a sub t-line but it's not really going to hurt it. It's pretty standard when doing full range drivers though.

This is true. I am one of those guys that just has to mess around with designs even if it isn't practical lol.

JLJunkieMX107
01-12-2008, 12:48 PM
round over bit?

Yes sir. Gives it a nice smooth look.

PV Audio
01-12-2008, 04:54 PM
I'm still not sure about the T-line there. I'll take your word for it, but it appears to have quite a large compression chamber, which defeats the purpose of a T-line in the first place :crap:. Could I see a printout or modeling/graph of the design?

IamDeMan
01-12-2008, 05:02 PM
i know its a T-line just dont know the expression in english for the tunnel/port what ever u call it...every tline design i saw b4 didnt have 'irregularities' in teh tunnel area
Then you haven't seen too many. It is quite a common practice in home audio to either taper up to the same area of driver or taper down to the same area.