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Eskii

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Posts posted by Eskii

  1. Port Length, Help!

    in Subwoofers / Enclosures

    Posted

    That's not enough port area for that much cone. You tune the port to the box but you have to allow for cone area when figuring out port area :) Just means you need longer ports.

    What's the dimensions? Could you fit 4 4" aeroports either firing up or firing across the box? The flares will reduce port noise, otherwise you're gonna need a shitload of port to stop it chuffing. Ideally you would need about 15 sq.in for EACH sub, as mentioned... I figure this box is going across behind the seats, could you have external slot ports that extend out under each seat or something?

    Could be an option, hmmm. I'll get back to the drawing board!!!

    yeh thanks, i thought i needed more port area

  2. Port Length, Help!

    in Subwoofers / Enclosures

    Posted

    That's not enough port area for that much cone. You tune the port to the box but you have to allow for cone area when figuring out port area :) Just means you need longer ports.

    What's the dimensions? Could you fit 4 4" aeroports either firing up or firing across the box? The flares will reduce port noise, otherwise you're gonna need a shitload of port to stop it chuffing. Ideally you would need about 15 sq.in for EACH sub, as mentioned... I figure this box is going across behind the seats, could you have external slot ports that extend out under each seat or something?

    Could be an option, hmmm. I'll get back to the drawing board!!!

    yeh thanks, i thought i needed more port area

  3. Port Length, Help!

    in Subwoofers / Enclosures

    Posted

    You would have really high port velocity if you port that box either way. The smaller the port the lower the tune. The longer the port the lower the tune. I assume that the 1.85 cubes includes the port? So any port takes up air space along with the sub too. So to get that low tune you need either small port that is short (really high port velocity) or a large port (10-16 square inches per cubic foot of box) with a long length to get the lower tune. That is fine but you only have that 1.85 cubes to work with and the port would start to gobble up your space. So... you get back to the high port velocity again.

    I have been putting numbers in Bass Box Pro and I just can't make it work with that tune. 3 10s with their displacment, plus a port that is only 12sq inches that is 18 inches long gives a remaining internal space of around 1.4 cubes (less than the recommended) and tunes to about 32-33 hz. That gives a really high vent velocity and poor low end output.

    I just don't see it happening. But you could proove me wrong- that space is just killing you.

    note that the 1.85 cu.ft is including the drivers displacement

  8. Port Length, Help!

    in Subwoofers / Enclosures

    Posted

    You tune a port for the box, not for the subs. It wouldn't matter if you have 3 subs in that box or 1, the tune would be the same if the internal volume and port size & length were the same.....

    So- I think you would be better off with all 3 sealed or just 1 ported. Just because you can stuff the speakers in there doesn't mean it will be louder or sound better.

    But wouldn't the amount of subs determine the port area, coz there's more air moving.

    It's all planning at this stage. So i'm just going through my options

  9. Port Length, Help!

    in Subwoofers / Enclosures

    Posted

    Yeah, if that is total cubes for all 3 then he might have to go with a dirty word *GASP* ....sealed.

    Ha, yeah, i've always had sealed, so time for something different.

    Fi recommend 0.5 cu.ft min for a ported BL 10, so it's not too extreme wat i'm doin. Especially coz i'm overpowering them

  12. Im Stumped...any Help?

    in General Audio - Can't find a category for your question? Ask here.

    Posted

    I'm currently designing a box for behind the rear seats of my wrangler. It's for 3 fully loaded BL's and gonna be run of an RF T4k

    <a href="http://imageshack.us"><img src="http://img205.imageshack.us/img205/559/67194141kj8.jpg" border="0" alt="Image Hosted by ImageShack.us"/></a><br/><a href="http://g.imageshack.us/g.php?h=205&i=67194141kj8.jpg"><img src="http://img205.imageshack.us/img205/559/67194141kj8.7f756000d3.jpg" border="0"></a>

    If you give me dimensions i can work something out for ya :D

  16. How Do You Get Rid Of Distortion?

    in Head Units-Processors and Eq's

    Posted

    Distortion is the same as clipping, meaning that the top of the AC sine-wave is lost due to insufficient power.

    In yor case, the only reason i can think of is that the gain is turned up too much on either the H/U or the amp.

    Note that bass boost on an amp is good as it isolates the sub, where as most head units will amplify bass for all channels.

    My advice is to get rid of any bass related EQ's or boosters on the head unit and stick with gain on the sub channel...

    Eskii

  19. Best 10inch Sub... Opinions

    in Subwoofers / Enclosures

    Posted

    just go to walmart and get 2 sony xplod 10s in the right box they will sound good trust me

    I'm sure they would sound good.

    No disrespect, but i did state it's for a SPL/Daily and from my experience, sony doesn't proved soild sound.

    I need something that sounds awesome!

    Q's would be a good choice. Lvl 4's, haven't really looked into them at all actually, i will but :)

    Something i'm still deciding on IS wat sort of enclosure to go with, subs will have to be facing down. So the only options are sealed, port-down, port-up.

    BTW, I'm from Australia. So Walmart... Wat's that lol

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