installing free-air sub?
04-12-2004, 03:58 PM
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Car: 87 Formula/ 87 IROC-Z
Engine: LT1/L98
Transmission: modded700R4s
Axle/Gears: 3:23 posi/?posi
installing free-air sub?
So my brother gave me a 10" Pioneer TS-W251F "Free air type subwoofer" I know it will run adequately thru my amp bridged to the 6x9s and this sub (Pioneer GM X374 4 channel) but i can't remember the signifcance of "free air" from my teen years of systems
What type of enclosure or baffle do i need to install this best?
Thanks
What type of enclosure or baffle do i need to install this best?Thanks
04-12-2004, 04:19 PM
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Car: CTS-V & 89 Z28 vortech charged
Engine: LS6 & 383 charged stroker
Transmission: 6-speed & 5 speed
That type of sub is designed to run without an enclosure. But they will sound better if you can seal off the area as good as you can, to make it like an enclosure.
04-13-2004, 12:52 AM
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Car: 83 z28
Engine: 300hp 355
Transmission: T5
Originally posted by 87LG4FORMULA
so just the infamous board across the well?
so just the infamous board across the well?
i might be wrong though
04-14-2004, 02:25 AM
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Car: 85 firebird
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Its worth a try. I once had free air subs in my car. ONCE! for a VERY short time! they sucked! If i had the subs id make the biggest box i could for them and see how they sounded in that. I dont have alot of exp with them though as i threw mine away.
04-14-2004, 02:44 AM
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I don't know if you looked but here is all of the infor pioneer has on the sub. good luck sorting through it.
http://208.220.235.52:7001/eSupportJ...2ByKeyword.jsp
http://208.220.235.52:7001/eSupportJ...2ByKeyword.jsp
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04-14-2004, 11:39 AM
#8
A free air sub is generally a sub that's got a high qts and a stiff suspension. Since the system "q" consists of the mechanical qts of the woofer and the box q, eliminating the box requires a higher qts to result in a full sound. The stiff suspension is due to not having the "air spring" from the pressurized enclosure. The cone excursion needs to be controlled with a stiffer suspension.
Anyway... if you model a free air sub (or any high q sub), you'll find that to get a flat response generally requires an enormous sealed box. This is perfect in a situation like a trunk. Unfortunately, the area under a "plate" isn't nearly big enough, plus all of the usual issues with air leaks certainly don't disappear when you use a free air sub.
Anyway... if you model a free air sub (or any high q sub), you'll find that to get a flat response generally requires an enormous sealed box. This is perfect in a situation like a trunk. Unfortunately, the area under a "plate" isn't nearly big enough, plus all of the usual issues with air leaks certainly don't disappear when you use a free air sub.
04-20-2004, 12:43 PM
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Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
Those were 12" Pioneer free air subs. Sounds great in that box, but that was about 4 years ago... long before I got my new system
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