Anyone try free air subwoofer?
 

I’ve seen a YouTube video where a fella installed a 6.75 inch free air sub in the deck/shelf behind the back seat. It looks like there’s a spot in the middle where they stamped out a spot for a 6.5 inch speaker. I’m a sound quality kinda guy and would like to avoid even a small sealed enclosure in the trunk if possible. The sweetest system I’ve ever heard was in a young installers Jetta sedan. It had separates in the front doors and a couple 8” subs in the shelf behind the back seats. He was running quality class A/B amps driving high end Focal speakers (not utopia). Just wondering if anyone has gone free air and their thoughts...

most hardcore sq people seem to be mounting everything up front now. Even some higher end luxury car companies have started mounting subs behind the nav systems right up next to the windshield.

I suppose smaller shallow mount subs could fit in the doors or dash. I’m sure the r&d folks are working on noise cancellation to eliminate road and engine noise or having half the car silent while the other half listens to J.Rogan!

R&D guys lol nah.
With how horrible our rear decks rattle free air sub would worth less.
Not sure how much of a sound quality guy you are, but a real sound quality guy would rather give up cargo space for a proper ported sub box.

The key is compromise. Find the a small box enclosure with either a shallow mount sub and give up a bit of space. Or go full custom fitted enclosure on the rear quarter panels or spare tire area.

Normally I’d go with a 10” in a sealed enclosure but space is getting tight. I was always scared of Murphy’s law in past installations, figuring I’d be practically asking to be stranded on the side of the road if I ditched the spare tire. But it’s been a good 20 years since I’ve had to rely on a spare to save my bacon, so I guess that’s an option I’d consider. When I say I’m a sq guy I mean that I go for pioneer premier over Sony x-plod and I don’t spend $2k on 20-70hz and $500 on 70-20khz, more the reverse.

Free air usually sounds awful, and to make it worth while is a lot of work, time, and money...plus the subs have to be capable of free air. If you want to use the rear deck, get a shallow mount sub, sound deaden the entire rear deck and put a low profile MDF enclosure over the back of the sub....better sealed to the rear deck the better. It is not acoustically the best position for a sub, but it will be lightyears better than a free air.

track down Integrity Concepts and convince him to make another run of fiberglass boxes.

https://www.ft86club.com/forums/showthread.php?t=31813

I mean, you can fit an Anarchy in each door I believe, will get quite low with fewer compromises...

would need almost a 1.5" spacer. my peerless hds nomex needed a 3/4" spacer to clear the glass.

though iirc, there is enough space in the interior door panels for that.

Talk about peer pressure! I was hoping for some feedback from an individual or two who have tried going free air. Thanks for the feedback, I can’t wait to try to sell my wife on a custom fibreglass enclosure, she loves it when I start talking about audio upgrades! Looks like she might be getting that fancy dining table sooner than later. So now my second hand $20kUS mid-life crisis mobile is going to cost me $30k+ and that’s before I even consider putting in an HKS supercharger. Good thing I’m in a crisis with a side order of crickets.

if an audio setup is $10k for a car, you've confused irrationally burning money for good sound...

Raaaaaaaly? ;)


Not sure how else to spend that much...


Also not convinced a sub is needed. Good door driver choice will go as low and sound better than the free air setup being discussed.

I know right?

With less than $350 I can put together a decent sounding set up from Walmart. That will still sound leaps and bounds better than stock. Granted the head unit stays.

Head unit should be the first thing to go. Unless you are getting some sort of digital aid if the source stinks the sound will never be good. I bet the stock speakers on a good head unit will sound much better.

Even a bad sub like the oem one you can get as an option makes it sound a lot better.

I disagree to a point, if you have the base frs non gps version, yes replace that pos. But if you have the brz one, it's a polished turd but ok, still a turd though.

Oem speakers, again if you have base frs set up, yep. Even the premium brz can barely pass.

Oh and FYI the "factory" sub is made my an aftermarket brand Kicker along with its amp. It was not an in-house brand. Then again..... it's the same sub they use on their $150 generic sub/box combos. But sell if for $400+ because the "custom" fit enclosure. :bonk:
Oh even for the luz.... sold on Walmart.:lol:

There are no "in house brands," they all have them manufactured for them at a specific price point. The BRZ head unit is still absolute garbage for sound quality.

And that was my exact point about the sub. Any sub will make it sound better. Believe me, I know how bad that optional sub is, the person I bought my car from thought is was so bad he unplugged it. After wrapping a few towels around it the sound is acceptable, but literally anything a person can buy aftermarket will be better.

Even a $200 head unit will make the stock speakers sound better. Not I'm going to spend $3000 better, but so much better than stock.

Now I'm trying to build a $10k audio install in my head...

Not even HAT stuff costs that much! I think the best I can do without searching out unicorn blood type stuff is about $5-6k...

This is still available at at Crutchfield. :D

Personally, I just want the head unit.

https://www.crutchfield.com/p_130DXT....html?tp=72430

Attachment 197998

I didn’t try the rear deck, if I did it would be 6x9s. I wouldn’t wAnt to block anything going into the back seat gotta fit the golf clubs in the back of the poor mans Porsche somewhere.... what I did was put in a cerwin Vega spare tire sub. I spliced into the rear amp for remote and high level inputs, converted to RCA with a filter to deaden the potential buzzing. That with a pair for RF 4inch in the dash have made me wonder about the deep jbl door speakers and upgraded 4ch amp and custom mounted 5.25 in the back seat that I am thinking of.... it sounds great the little sub takes ZERO trunk room, and fits perfect. Cerwin-Vega VPAS12ST 12" 2Ω 600W / 150W RMS Powered Active Subwoofer Spare Tire Application, Black https://www.amazon.com/dp/B07FY9BPVR...0EC3NH771SCY2W