free air sub

[j_slovax]

bros,

i'm driving waja and plan to install sub on my car. since i want to save the boot space, the installer suggest to install 2x10" free air sub to replace standard 6x9 rear speaker with custom made box to cover it.. My Q.. 1) is this a gud setup.. 2) they sugget to install italian made REVAC compset and sub.. is this a gud product?

thanx all.

 

[oldskolboyz]

Revac Car audio also good stuff... but if compared the price tag ... I'm prefer RS Audio Sub woofer 10' DVC... Waja aaa ....... I think you should contact zenn coz he has afew frend using waja with diff stuff... If U can listen to the car system.. that much better...

 

[TT9236]

lololol

 

[oldskolboyz]

Thats a good planning to put a sub in your trunk. The woofer quality is more important .
Revac thats not a italian brand. Try to find out a good woofer in a hi end shop . The result will better than u using 2 pcs 10 inch if compare with a good brand single 12 inch in a compact speaker box .

Than u think about your space ...... try this . But a bit high cost in fiber job. hope u like it.

http://img.photobucket.com/albums/v497/Qsmalaysia/DSCF1167.jpg

Who said Revac not a Italian 1 brand....maybe U only know about Audio System, Audison, Sinfoni, Celestra made in Italy... as I Know it same as Ad Audio Development... not much promo about his product... coz to $$$$$

 

[craziechild]

Who said Revac not a Italian 1 brand....maybe U only know about Audio System, Audison, Sinfoni, Celestra made in Italy... as I Know it same as Ad Audio Development... not much promo about his product... coz to $$$$$

you mean revac and ad is the same company?

 

[oldskolboyz]

you mean revac and ad is the same company?

I mean promo about this 2 brand in our market....

 

[Zenn]

systems with free air subs for me is the best for SQ for normal listening, not for competition (SPL score will be low). however this only applies to a properly installed free air set up, where u have to seal the air from the boot (behind the sub) from the passenger compartment, involves quite a bit of work and wood.

to look for free air subs, u can try old JL IB series subs or easier still look for subs that have a really large box size recommendation, like some kickers, bravox, RF, etc etc....

 

[Kippo]

bros,

i'm driving waja and plan to install sub on my car. since i want to save the boot space, the installer suggest to install 2x10" free air sub to replace standard 6x9 rear speaker with custom made box to cover it.. My Q.. 1) is this a gud setup.. 2) they sugget to install italian made REVAC compset and sub.. is this a gud product?

thanx all.

installing a sub in infinite baffle, IB (here ppl call it 'free air') is equivalent of using a very large box where the vol. is more than 4 times the sub VAS (suspension compliance).
The response is similar of using very large sealed box where Qtc will be low eg. 0.5 & you will get response in good low end extension but lacking in upper end.

due to the large box, sub efficiency is higher so the power handling is a lot lower. If the power is not controlled, u will get mechanical damage.

one thing u must know that not all subs are suitable for IB setup (free air). Ask ur installer to refer to the sub manual or dealer first.

also doing IB setup is not easy. It is not as easy as what most ppl think of.
1. u need to ensure that there will be no leaks to inside cabin. If the sub rear wave leak into the cabin, u will get cancellation.
2. Like any sub enclosure/box, u need to get it rigid by adding a lot of sound dampening. If not, your car boot will vibrate or flexing hence creating secondary sound i.e distortion & uneven response. With the plenty of sound dampening to be used, it is not a cheap solution.
3. U need good mid-drivers to cover the lack of upper bass freq. So cannot say this is SQ setup if there are missing or lack of required freq. response.

On Revac sub, i've never heard of it so i can't comment. But if the price is higher than established good sub brands then i better get the cheaper one. No point paying more for brand alone.


cheers.

 

[kyheng]

Get a 12" sub with either sealed or ported then all your problem settled. The sub power is the best at around 200-300watt rms. Brand I don't want to comment here, who can really comment the most is your wallet, not anybody else..