Jump to content

osiris10012

Members
  • Content Count

    99
  • Joined

  • Last visited

Posts posted by osiris10012


  1. That is terrible advice. Dss recommends 1.5 ft3 tuned to 32hz with 40in2 of port. You would get terrible performs out of the ethos 12" in that large of an enclosure. Chances are you would also damage it. The reason I love SSA is because of the solid accurate advise so please stop given such bad advice.


  2. Just a heads up. I went to my local sears and they told me I could only get the super low price if I ordered it online for store pick up. Not sure if all sears stores will be like this, but you may want to give them a call first before wasting a trip out.

    They will match any verified online pricing or coupon you can find. The guy was just being a dick then.

    All I had to do was show him a screen shot of my phone with the low price.

    I think he couldn't figure it out just like M5 mentioned. Honestly not sure. They were really nice about it and set it aside for me until I ordered it online. Plus I called in. It's a 25 mile drive for me to get to sears so I didn't want to chance it. I'll be picking mine up Saturday. Thanks again for starting this thread hydrox.

  3. Thanks for all the input. I didn't realize it was so simple to just do it by hand. I will do the math when I get a chance and post the results.

    Note that the above equation for port length is not taking port displacement into account.

    E.g. arbitrary values but say you have box volume 2 ft^3, port area 20 in^2, tuning 30hz, port length 25"

    The above values for the port and tuning are based upon a box volume of 2 ft^3, but the port itself is displacing (20 in^2 x 25in)*1ft^3/1728in^3 is 0.29 ft^3 so the net volume is now 1.7 ft^3

    since the volume is actually less than what was used for calculation the actual tuning will be higher than 30hz. So you have to either play around with the numbers until you end up with the volume, tuning, and port length needed, or you simply add the port volume to the box volume and come up with new box dimensions (if you have the space), you can also calculate it here: http://box.bitpusher.in/enclosure/?page=portlength

    Also don't forget to account for the thickness of the port depending on the enclosure it may or may not be negligible.

    Alright well now I am a bit confused. I used the given formula for using port area and got 57.8" of port length when using the 3 cu ft and 74 in2 of port area. The part I am confused about is where in the formula am I looking to see the reduction in volume. I see where it is converting it to cubic inch but not changing the overall volume. I was initially under the impression that I would need to use the net volume. Sorry for the newb question but up until now I was relying on the Torres calculator. I just want to make sure I get the tuning length right.

  4. Hello everyone. I am redesigning my enclosure for my 15" ethos for different mounting options. When I use the Torres calculator I am using the total net feature with 3 cu ft and also 3 common walls since it is a slot port. Using a port that is 4x18.5 at 56" long gives me a tuning of 31.94 hz and 74 in2 of port. Then when I use the same size port in the carstereo.com calculator it tells me 48.5" of length is required to give me 32hz tuning. So my question is which one should I use. In sketch up I am designing the port by measuring down the center. Thank you in advance for the help.


  5. Thanks for the compliments guys. Here are a couple more pics. I ended up getting it installed but don't have any pics of it because it is pouring down right now. I absolutely need to design a way to secure this, but at least I got it playing. I barely have any play time on it but I am extremely impressed. Even with the windows up I could feel this thing moving a lot of air while playing stuff in the 27-32 hz range. I have never felt that in any of my previous set ups. I can definetely tell it needs to loosen up a bit and I can't wait. Another thing I forgot to mention was my speaker wire is definetely overkill. I had to trim quite a bit to fit it in the ethos terminals. Fit great in the amp though. Lol

    20140715_065053_zpseqx98wh1.jpg

    20140715_062731_zpsmmjwapsv.jpg

    20140715_062720_zps3mt29d8k.jpg


  6. Alright everyone, I apologize for the wait. I just got all the pics uploaded. My first impression of this sub was basically a shock. This thing is an absolute monster, especially next to my sundown e10. The build quality is awesome and the packaging did great. The only thing that happened to the packaging was a slight tear in one corner and the bottom wood plate got a corner bent up. No big deal at all. This thing had a long journey from Louisiana to Alaska and the sub arrived perfectly fine. It sat nice and tight in the packaging. This sub is gorgeous with the chrome motor, black basket and the raised dss logo. I am almost ashamed that the motor will be hidden. Another thing I noticed was this bad boy is stiff. I can't wait to get it installed in the truck and start breaking it in. Unfortunately due to a few things I have going on I may not get it in until this weekend. Anyways enough talk and onto the pics.

     

    IMG_2549_zps4fd8fe56.jpg

    IMG_2550_zpsad37a0f3.jpg

    IMG_2551_zps75dda455.jpg

    IMG_2552_zps5bc0871f.jpg

    IMG_2553_zps5c8b3a49.jpg

    IMG_2554_zpsaea7d7bf.jpg

    IMG_2555_zps7b9a2d54.jpg

    IMG_2556_zpsaefb08ae.jpg

    IMG_2557_zps3cefb37f.jpg

    IMG_2559_zpsc0cf415b.jpg

    IMG_2560_zps7c6673a9.jpg

    IMG_2561_zpsfec05321.jpg

    IMG_2562_zps57b35f45.jpg

    IMG_2564_zps49f8bcf3.jpg

    IMG_2566_zps8a6b8028.jpg

    IMG_2569_zps3d9e5b73.jpg

    IMG_2570_zpsa39436bb.jpg

×