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ia2

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Posts posted by ia2

  4. Posted

    I can now say that I have heard the flatlyne in a sealed enlosure, better yet 2 flatlynes in a sealed enclosure! I ended up buying another 1.44 cu ft enclosure since I already had one lying around from the lethal injection. I had one single flatlyne hooked up to a audison lrx4.1 until the 2nd box came home. First impression, the output is lacking! My IA LI sounded much louder and digged deeper in the sealed and ported box as compared to the sealed LI. I thought that was attributed to the fact that the li was wired in 1 ohm and saw 7-900 watts as opposed to the flatlyne which was wired in 2 ohms and received less watts. However, I knew something was wrong...I checked my wiring and gains. Turned off the subsonic filter and still no drastic change. I finally unplugged the ipod (avic d3) and hooked up my iphone and it was night and day. I had no idea how the signal from the ipod was different from the iphone.

    After hooking up the iphone, the flatlyne was alot louder than the LI, and dropped much lower than the LI in the ported and sealed box even though it saw less power than the lethal injection. High frequencies had an impact that hits you in the chest and low frequencies the low frequencies unraveled new rattles and loose parts. It was unbelievable!

    Today the 2nd box came home and I wired the 2 subs to 1 ohm and hooked it up to the lrx4.1 So both subs should have saw roughly 400 watts (way below the rms). Since I was impressed with 1 sealed flatlyne...you can only imagine my impressions with 2 subs. Without the changing any settings, the 2 subs was too much! The bass simply took over the car and front stage. I can barely hear the high frequencies from the tweeters as the bass made the sound flutter (kind of like when you speak into a big fan). It made me realize that I need more power for the front stage. I currently have the massive audio ck6 stage 3 comps off a nine.4 which is rated for 50 watts x 4 at 4 ohms. I will dropped that amp to 2 channel settings soon and d/c the back speakers so the comps will doubled that power.

    I am no sq fanatic so I will not give a detail review since I am easily pleased as long as it is loud and clear.

    My audison lrx4.1 has been cutting in and out so I can't demo the subs much (new amp tomorrow). The subs play one minute and it stops the next...no relation to whether im driving or parked. The grounds are redone, and everything is securely hooked up. The light on the amp stays green even though the subs don't play. I am thinking it is the amp since it happened to me when I changed the LI to a ported box and cranked it up more. But before that it played flawlessly for the last 2 years.

    Wow... a LI on 900 watts! BTW, do the LI and Flatlynes have the same bolt mounting pattern? I am thinking of running a LI 12" in my Flatlyne's old sealed enclosure (1.34cu/ft) for a future home theater setup. The sub rack amp will put out 950rms in 4ohm. I debated on running a Flatlyne as well, your post got me to thinking......

    Yes, same mounting

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  6. Posted

    There may be more port length inside the box that you cant see, but it doesnt sound like it. I plugged the box into our program and got 2.25 cubes (before displacement) tuned to 40 hz. Slowed down music sometimes reaches into the sub-30 hz range, and if this is the case, you are playing waaay under tuning and the sub will unload like crazy and sound terrible. For the time being, if your amp has a sub sonic filter, try playing with it and adjust it closer to the box tuning, or at least a bit over 30 hz. Contact the box builder, and get the exact specs of the box, and make adjustments as necessary until you get everything figured out. You dont want to have to buy a recone because of some simple adjustments.

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  7. Posted

    We would like to thank everyone here for eight years of allowing us to continue doing what we love to do. It is such a blessing to wake up every morning and go to work with your best friends, and without you guys, this would not be possible. I hope everyone here is able to enjoy their families and friends through the holiday season, and once again, thanks for everything!

    Now, with that being said, here is our holiday/CES schedule:

    Closed dates:

    December 23rd, 24th, 30th, 31st

    January 6th, 7th, 10th

    sexy_merry_christmas-11410.gif

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  9. Posted

    im thinking about going from 2 15's to one 21" DP, my question is what is the recommended box size for these? and can they take more then 1500rms daily? i would be putting 2200rms on it daily.

    thanks!

    Most people wind up making their box 8.5 cubes with about 120" of port tuned to 32ish hz. The new DP can take tons of power with the new star motor's cooling, and the new voice coil. Just be easy on the gains, and don't play hard below tuning, and you will be fine.

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  15. Posted

    If you find T/S parameters, or we give them to you, please do not plug these numbers in your box building program and expect to get correct box sizes. There is another stickied thread on here with listed recommended box sizes and port dimensions. We have been receiving tons of emails and messages wanting to know T/S parameters on our subwoofers, just so they can build "the right box" for the subs.

    Please follow our recommended box sizes for optimum performance from your subwoofers!

    Recommended box sizes

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  16. Posted

    Just got an email back, here is what i got for the 15" LI

    Driver---15 Inch

    FS --- 27 Hz

    Re --- 8 ohm series

    Qms---5.03

    Qes ---0.67

    Qts ----0.59

    Mms ----205 g

    Cms ---0.15 mm/N

    Sd ----810 cm^2

    Vas ----137 L

    Spl ----87.6

    BL -----15.5

    X-max ------21mm

    Sub Diameter------- 15 1/2 inches

    Mounting ---------14 1/8 inches

    Mounting Dept -------- 8 inches

    Driver Displacement ------ .15 cubic ft.

    Power ----------- 600 Wrms / 1200 peak

    Should help with some better box design I hope, I'm gonna run some numbers today.

    Do not use the TS parameters to build your box if you plan on plugging those numbers in a box building program. Follow our recommended enclosure sizes.

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  17. Posted

    Come on guys give him a break.....hes from Trinidad, which just happens to be a country that imports tons of IA gear now :)

    Hey man, the recommendation above of 2.3 cubes is great. Externally the box would be 18x15x19.5, and internally that would give you 16.5" x 13.5" x 18", with a port of 13.5" x 3" x 33.5" deep. That will get you roughly 35 hz tuning.

    Thanks!

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