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the_garynator

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  2. DC audio Carbon fiber Cone

    in Murphys Pub

    Posted

    The carbon fiber cones will lower fs slightly due to them being a bit heavier than the standard paper cones.  For most builds they are, as near as makes no difference, a purely cosmetic upgrade. In extreme circumstances where loading issues are destroying paper cones, the strength advantage they offer becomes a benefit.

     

    They look dope as hell though!!!

  11. level 5 or 6??

    in DC Sound Lab - Big Bass on ANOTHER LEVEL!

    Posted

    Each sub is going to have an application that is going to suit it better. If you are starting with 10kw total on 4 subs, then the Level 5s would be better, but with your plans of 20kw on 4 subs, the Level 6s are going to be a better sub. Just based on a tuning of 28hz, you are going to be listening to alot of decaf type music and love the low notes. The Level 6s in this case are the perfect sub for you, they were designed to be low end musical monsters.

    With the type of equipment you are talking about, you are going to need a very stout electrical. Depending on what you can fit on your vehicle for alternators, you are going to be looking at needing probably 5-6 D3100s to start with and then 10-12 once you double power to 20kw.

    you're getting me even more excited for my lvl 6 to show up hahaha!

  18. Sky High Car Audio vs DC Audio TAHOE BUILD OFF 10 LV6s and 75k WATTS

    in DC Sound Lab - Big Bass on ANOTHER LEVEL!

    Posted

    Rusty, be prepared to loose that bad boy. Lots of times when the bed under the nail is damaged, pressure like you had, 9 times out of 10 you loose the nail. I hope that's not the case for you, but by experience that's what does happen. I lost mine last year, and it's fully grown back, took about 3-4 months. Just an idea of what to watch out for.

    Nice progress on both. Can't wait to see Jon's this weekend. keep it up guys!

    I got 9 more!! hahaha Im good =]

    hahaha, That's the spirit!!

  21. PORT AREA for (2) DC Level 4 18's /or/ (2) DC XL 18's

    in DC Sound Lab - Big Bass on ANOTHER LEVEL!

    Posted

    Shared chamber box or dual chamber?

    for dual chamber I would go somewhere in the 5.5-6ft^3 volume per sub like CJ said.

    for shared chamber I would go somewhere around 8.25-9ft^3 volume after displacements.

    For slot port box I would do between 12-16in^2 of port area per cube

    For flared round ports, somewhere between 10-12in^2 per cube.

    is that 8.25-9 cubicfeet PER SUB OR TOTAL? I'd be surprised if there was that much of a difference if the subs each have their own chamber.

    btw my plan is for a shared chamber. my current mock up consists of a 4" x 36" port that is against one edge of the box. I want to kerf the 36" side that isn't against the edge with roughly a 3" radius i believe. I'll check the design and put up some pics tomorrow.

    8.25-9 cubic feet total after displacements for a shared chamber. Dual chambers actually do make a difference. Dual chambers will have more port gain. When I have a chance later I'll post a couple winisd graphs illustrating this.

    Shared chamber works well if you want more cone area but are limited on space. I.E. you can only fit 2 15's in optimal boxes but would rather have 2 18s with less efficient boxes.

  23. PORT AREA for (2) DC Level 4 18's /or/ (2) DC XL 18's

    in DC Sound Lab - Big Bass on ANOTHER LEVEL!

    Posted

    Shared chamber box or dual chamber?

    for dual chamber I would go somewhere in the 5.5-6ft^3 volume per sub like CJ said.

    for shared chamber I would go somewhere around 8.25-9ft^3 volume after displacements.

    For slot port box I would do between 12-16in^2 of port area per cube

    For flared round ports, somewhere between 10-12in^2 per cube.

    I like tuning in the mid 30s, but I know in my case, I usually set my LPF to 60hz because if I have it set to 80, box rise trails off and my amps start to pull a lot more current. I know with my lvl 5 18, 6ft^3 box, 5x 4" precision ports tuned to 37hz, I find it really lacks when listening to rock like rammstein. It dominates on most everything else you listed though.

    Just something to think about, up to you to determine how much punchy bass in rock you want. If you want better response up top for rock, I would mess around and try tuning in the 40hz to mid 40s range and see how that sounds. It really does depend on your car too...my old 240 with the same box had more cabin gain at higher frequencies and helped out in the 60hz range, new car not so much...sounds a lot more peaky because the resonant frequency is lower.

  24. DC Audio 8 m3 ** Vid added page 9**

    in DC Sound Lab - Big Bass on ANOTHER LEVEL!

    Posted

    Nothing other than the sub parts are all finalized and in production so were probly lookin at 60 days before were able to ship them out to the shops

    The suspense is killing me!!!! Getting close to the answers to all of our questions, just gotta dig around and find a little more patience lol. Can't wait to get my hands on the t/s specs of this beast and start messing around with a box design!

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