Jump to content
Second Skin Audio

help with 8 autotek m12's


Recommended Posts

I'm buying 8, they're only $45 on audiosavings with free shipping (drop off in US/pick up from Canada). I've been playing with designs for my Alero behind the front seats.

I just sent this message to Autotek on Facebook:

I asked a local audio shop guy about a 4th order wall for 8 M12's. He told me it'd fry the coils and to ask if you do or dont recommend bandpass (2 ported @ 45hz, 1 sealed/each/each). Like this, behind the front seats (the blue line is plexi so you look back and see the surrounds, port above the head rests) https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-prn1/534416_10150987306875786_60 0705785_128...30585_1820650142_n.jpg - i'd need to take out the rear door panels for it to fit and i doubt i'd be able to build a floor, i'd probably just put a 1" layer of rubber on the metal so it doesn't screw it up. the subs are only 9.5 lbs, the wood 3/4", maybe mdf lite. box braced with 2x4's.

shop guy recommended this instead

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/392488_10150987973745786_60 0705785_12832273_110057267_n.jpg

Both are cool, but I really wanted that 4th order wall. The M12 plots nicely from 25-70 Hz in about 2 ported/1 sealed @ 45 Hz, nearly flat.

I don't know what to do anymore. Are these safe for a 4th order? If theyre designed for ported OR sealed than why would both be bad?

The box would cost $500-$600 and it would be about 16 cubes ported/20 cubes 4th order (16 p/1 s). nice design this guy drew up, really cool looking. I still wanted that 4th order wall because I thought it'd be safer for the subs because they'd still have loading below the tune. He said he could do it but it might fry the coils, saying that the bandpasses of the 90's weren't good or something. It seemed he was going to "guesstimate" the port area. I was like um, bad idea dude. he then said i could port towards the floor at that point i was like w.t.f. no. i can send him my visonik 1500w to get fixed. im stuck between what i think is bad advice and what im pretty sure i wont be able to accomplish on my own. my skills are screwy. thanks guys.

specs:

qts .734

9mm xmax

spl 83.2 1w1m

fs (which they called FO) 23.72 hz

vas 98.15L

I also got to listen to a ported 12" on 4k in a golf hatch. Holy christ that thing slammed. It was hard to breathe but I'm a bass head and want more.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Who's Online   0 Members, 0 Anonymous, 708 Guests (See full list)

    • There are no registered users currently online
×
×
  • Create New...