Joe X

For a low cost daily setup I think that is ok. With some more money you can get much better stuff.

Cutting about 25% of Vb is a big deal as far as the type of sound you will be getting from the sub in most cases which you would care about on a daily setup. You need to protect the sub of course but I was just curious, if not going by specs throwing a round number would seem daring to me. unless??

Right, so I am guessing you measured them once broken in??

Wrong 3.75 as listed by DC Audio. I believe that you missed the part that he is running 1 DC 12k amp bridged at .5 ohm to 2 Level 5s. He has the potential of haveing 4-5k per sub. Now I think that I might know a little bit about the entire line of DC subs and amps, and particularly this setup since I have been working with him to get this setup for over a year. I recommend 3ft3 net per sub becasue of the potential of the extra power. Now if you know more about these subs/amp and his setup than I do, please indulge me with your vast amout of knowledge. Yes you are right I did miss the amp infos..the 3.75 applies for around rated power. Unhappily I couldn't find any T/S parameters for this sub so no way to take a look at an excursion plot for hints.. how do you know 3 cubic feet is just the number?

Wrong 3.75 as listed by DC Audio.

DC Audio does not publish T/S parameters for their level 5 subwoofers.

Guess you were lucky enough to realize that before building. Got a guy that realized that on the way in.. pretty big box also. Kind of hard building inside the trunk. Think about it.

Flared ends can be purchsed separately but I couldn't find 6" ones unhappily.

So here is a suggestion on the new dims port/sub front or back firing: Enclosure Specifications: Fb = 37 Hz Vb = 6.397 ft^3 Subwoofer Mounting = Flush Mounted External Height = 16 in External Width = 39.375 in External Depth = 26 in Port Width = 6 1/8 in Cut List: * All Dimensions in Inches. * Wood Thickness is 3/4 for all Parts. External Enclosure Parts: 2 x Front & Back (3 parts) = 39 3/8 x 16 Left & Right Sides = 23 3/4 x 14 1/2 Top & Bottom = 39 3/8 x 23 3/4 L Port Internal Assembly Parts: Front to Back = 15 x 14 1/2 Let me know any quesions.

That amp will work ok, and yes they have the 6" PVC in Lowes, there are also ready made stuff from parts express if have some extra $$$ not that expensive.

}It you really need to use it. it gets really easy overtime. Not doing this on paper..ever..lol.

Unfortunately sensitivity is measured at 1KHz, high sensitivity subs perform well in huge boxes.The only way to vaguely determine which sub has potential for loundess is through modelling (using all the t/s parameters), use the free WinISD but then... it ignores completely the cabin effects inside your car, need better software for that.

Guess 3 cubes per sub will be good if your amp is strong, the two rod dowels as well as the double baffle are very important. Use flared ports thats also very important in this case. Let me know any questions. BTW nice subs for the money.

I've got [email protected] which is about right for those subs, displacement was set at 0.2cuft per sub. For a 33Hz tune change the port to 5" wide and 17.25 deep, add a second baffle on the top of the existing one and add top to bottom crossbracing (a couple 2" diam wood rod dowels) between each two subs. Those would be my suggestions.

A Torres snap would let me see better, I really don't know how you figured out that design.

The box should spec at 14cuft@35Hz the subs displacement is not listed. As always port area per cube should be 12-16.

It's two subs Snowdrifter!!

It will sound tight but still on spec: Enclosure Specifications: Fb = 36.06 Hz Vb = 3.687 ft^3 Subwoofer Mounting = Flush Mounted External Height = 13 in External Width = 30.25 in External Depth = 26 in Cut List: * All Dimensions in Inches. * Wood Thickness is 3/4 for all Parts. External Enclosure Parts: 2 x Front & Back (3 parts) = 30 1/4 x 13 Left & Right Sides = 23 3/4 x 11 1/2 Top & Bottom = 30 1/4 x 23 3/4 Port Quantity and Dimensions: Number of Ports = 3 Pipe Port Diameter = 4 Pipe Port Length = 18 1/4 As before top to bottom and front to back crossbracing applies.

4 cubes seems a bit large for a 12 don't you think? It says "port them"

Yes you can do ported very well on that space with 3 4" aero ports (flared), ports/subs in the same face front firing is suggested, take a look: Enclosure Specifications: Fb = 36.048 Hz Vb = 4.128 ft^3 External Height = 13 in External Width = 30.25 in External Depth = 28 in Cut List: * All Dimensions in Inches. * Wood Thickness is 3/4 for all Parts. External Enclosure Parts: 2 x Front & Back (3 parts) = 30 1/4 x 13 Left & Right Sides = 25 3/4 x 11 1/2 Top & Bottom = 30 1/4 x 25 3/4 Port Quantity and Dimensions: Number of Ports = 3 Pipe Port Diameter = 4 Pipe Port Length = 16 Top to bottom and front to back crossbracing applies. Let me know any questions.

Better read this one: http://www.jlaudio.com/header/Support/Tutorials/Enclosure+Ports/Tutorial%3A+Enclosure+Ports/656168 The Torres is based on this document, the and correction applies only once.

Minimum recommended PA/Vb is 9 for aero ports, best way to know is using WinISD free software, Port Mach below 0.05 is best. Without telling which subs can't say.

Where did you read that? curious.

It's within spec but on the short side, 2.5 cubes minimum per sub 3.75 max, depends on the power you are driving those, for rated 3.75 is probably best if you are going to overdrive them then a smaller Vb is better, with space 3.2 per sub would probably be what i'd have aimed since subs hit the lows better with more airspace. Your configuration is not standard, so no sketch right now.. see if with some time I make some simple one for you later, if you want to give up some more depth let me know.

Ok so here is it port back (bottom center vent) subs up: Enclosure Specifications: Fb = 32.012 Hz Vb = 5.496 ft^3 Subwoofer Mounting = Flush Mounted External Height = 16 in External Width = 31 in External Depth = 32 in Port Width = 4 in Cut List: * All Dimensions in Inches. * Wood Thickness is 3/4 for all Parts. External Enclosure Parts: 2 x Top & Bottom (3 parts) = 31 x 32 Left & Right Sides = 30 1/2 x 13 3/4 Front & Back = 31 x 13 3/4 L Port Internal Assembly Parts: 2 x Front to Back = 24 1/4 x 4 Top = 24 1/4 x 19 1/4 Or better you can go with aeroports (same box as above): Enclosure Specifications: Fb = 32.08 Hz Vb = 6.068 ft^3 Port Quantity and Dimensions: Number of Ports = 2 Pipe Port Diameter = 6 Pipe Port Length = 20