RAD

Yeah sealed up it dropped from 150 to 148, but window open it still did 151+ on music P.S. we completely smashed it last night, chips and pieces flying out onto the crowd was dangerous but they loved it

A little too good...

Can't comment on the rock music... but they pound out lows. Here's four IXL's excelling in my Hyundai excel!

Looking good so far, keep working!

From what i hear, the build quality on the Mass Destructions were poor, it was common for the soft parts to fail. Could just retune the box for BTL's, run the napalms in the meantime while you save/buy new subs.

I'd be hoping so with 4 18's in a diamond! Should have numbers and some vids by next weekend, cant get that 4th sub fast enough.

crosspug: no updates yet, just waiting on sub #4 to land at my door, get the auto fixed and im off pounding again. Hopefully with #4 in, it will make the enclosure volume more optimal to the recommended 4.5cubes. That, and with more cone area, and loading the amp lower, im hoping it'll do 150+ on music all day long.

There's a comp coming up on the 30th, i'll let you know how it goes! Hopefully still in the 150's, too bad the next shipment of IXL's wont come in time for me to have 4 of them running Highest was 151.5 @ 51hz with the ported setup; not enough port area held it back.

Car: 1995 Hyundai Excel (Oz version of Accent) Electrical: Big 3, 00gauge, Stock 90A alt, Odyssey 2150 Amp: Epsilon EA5000D @ 1.3ohm - ~3400w Subs: 3 x Mach 5 IXL 18"s Box: 24 cubes @ 40hz Mic: TermLab Tone: 49hz Score: 151.5 Legal Has plenty more in it, just redone for 4x18's in a Quasi 4th order.

4 18's sealed ? :bigclap: Technically sealed, but its kind of a Quasi 4th order bandpass. Hits hard and sounds good doing it, its designed for 18 cubes before drivers and the manifold; perfect for 4 IXL's, so when theyre in, it should be something to experience ...

Just got the newsletter (which i got a mention in!) Too bad their arrival is on the 28th, theres a club demo on the 27th i was hoping to have 4 IXL's rocking for.

I guess no-one saw the funny (or serious) side of my image

I realize the cone wont move as much, but audible output at low frequencies is poor compared to having more port area per sub; 3 subs 200sqin vs 2 subs 180 sqin. Either way, Sealed sounds great with these, but Marks recommended sealed volume vs the 'optimal' Qtc of .707 still intrigues me?

I'd be that gent Now i have 3 ported in my wall, and the output is quite good; it won me SPL King at a major Autoshow recently, 151.5db from 33hz tuning, a 4kw amp, one battery and 90A alt if thats any help to you. Huge bang for buck, and with the gains down it blends into music quite well for me. I'm playing with more of these in a sealed box, and its amazing how an 18" sub the price of an entry level 12" performs. Cant compare to a Fi sorry, because no-one sells them in Australia. Only downside i can see with them is that they require fairly large boxes, and huge amounts of port area: I have 24cubes, 200sqin of port and its not enough to reach anywhere near Xmax at lower notes in the 30 something Hz region. P.S. Mark, when are more coming to Oz, i need a 4th sub! P.P.S recommended sealed volume for the IXL 18's is 4.6, but gives a Qtc of 0.63? Should'nt it be 3.5 for 0.707?