Just installed 2 IA Flatlynes, previously had a LI

[droppedv6 10+ year member]

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 flatlyne. 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 the low frequencies unraveled new rattles and loose parts. It was unbelievable! It reminded me of my 2 oz matrix elites back in the day but louder.

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.

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[DBBOOM 10+ year member]

Nice to see IA gettin used. I've never been disappointed with any of their products.

 

[sundownz Pro Seller]

I saw a few in the SQ lanes at MECA Finals -- supposed to be really nice woofers.

 

[R34P3R 10+ year member]

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[09civic 5,000+ posts]

^^ this

 

[droppedv6 10+ year member]

the only camera i have is my iphone:

3 Incriminators:

typical cd comparison but from the backside:

left is the LI, right is the flatlyne..which one is heavier?

out with the old (audison), in with the new:

ps3 control to show how small it is:

real small:

 

[mikes81 10+ year member]

after hearing both the LI and the flatlyne is the flatlyne worth the extra money if I plan on running one 12 ported with about 700 watts?

 

[droppedv6 10+ year member]

That is a tough question. I would have stuck with the LI but I received a deal on the pair of flatlynes so I decided to change it up. With 700 watts you are over the recommended power for the Li, but I think it should handle it no problem if you have your gains and subsonic filter set correctly. I would go with the LI in your case if you are going ported. If you are planning on going sealed or Isobaric then I would go with the flatlynes. If money is not an issue, by all means get the flatlynes.