Air space?

[Mr FaceCaser]

So I've had alot of help 2 to 3 people and all there information is great I just want to hear other people's advice that's all. So the box I need is 4 cubic feet net so there's a box that's 3.5 cubic feet net instead of 4 that would be a better fit in my car would that make a huge difference (subs are 2 Uv2 12") should I go for the 4 or should I stay with the 3.5? Thank you to everyone that's been helping

Click to read more...

 

[Mr FaceCaser]

Thank you to everyone that helped

 

[spokey9 5,000+ posts]

These prefab or custom boxes?

 

[Mr FaceCaser]

These prefab or custom boxes?

The 3.50 cubci feet is pre fab and the 4 cubic feet is gp glue and screw it so I'm assuming custom

 

[Mr FaceCaser]

The 3.50 cubci feet is pre fab and the 4 cubic feet is gp glue and screw it so I'm assuming custom

There both by gp. One is the Tru spec box and the other is Glue and screw it.

 

[spokey9 5,000+ posts]

I'd do the glue and screw because if you put in your subs they'll do it close to spec. The prefab won't be close to spec for your subs

 

[Mr FaceCaser]

I'd do the glue and screw because if you put in your subs they'll do it close to spec. The prefab won't be close to spec for your subs

So what's the difference between the glue and screw it

 

[1aespinoza Premium Member]

car would that make a huge difference (subs are 2 Uv2 12") should I go for the 4 or should I stay with the 3.5?

Subwoofer Enclosure Design: Bending the Rules to Maximize Output - DD Audio

Most of the aftermarket audio crowd wants to do the most they can with what they can reasonably afford or justify as far as sound systems go. For some, there is reprieve because spatial limitations don’t have to hold them back. Take, for instance, a 500 watt subwoofer paired with a 500 watt RMS...

ddaudio.com

 

[SlugButter]

Both of those boxes will lose air space once the subs go in. Probably lose .25 cubes and raise port tuning by 1-2 HZ. The GP box is going to be far superior over a prefab.

 

[spokey9 5,000+ posts]

So what's the difference between the glue and screw it

The glue and screw is done with your subs in mind...the prefab is done with a generic 12" mind...

A box done to spec for your subs will outperform a prefab

 

[Mr FaceCaser]

Both of those boxes will lose air space once the subs go in. Probably lose .25 cubes and raise port tuning by 1-2 HZ. The GP box is going to be far superior over a prefab.

Both boxes already take in account the subs going I'm so the box is 3.50 cubic feet total after sub go in bc it's a true space box for the sundown SA-12V2 but not for the u series there very close in spec.

TRU SPEC Prefab Dual 12" Subwoofer Enclosure Sundown SA 12v2

GP Car Audio is a manufacturer of many USA Made ðºð¸ car audio products. We are also a distributor for several top Audio brands including Sundown Audio, XS Power, and Deaf Bonce.

gpcaraudio.com

 

[Mr FaceCaser]

The glue and screw is done with your subs in mind...the prefab is done with a generic 12" mind...

A box done to spec for your subs will outperform a prefab

The prefab is made for the SA-12V2 subs and very close in spec so the box is 3.50 cubic feet total.
https://gpcaraudio.com/tru-spec-prefab-dual-12-subwoofer-enclosure-sundown-sa-12v2/

I didn't know if .50 cubic foot would matter in total

 

[Doxquzme Premium Member]

3.5 is a 12.% reduction and will work though up to 10% is the usual barometer. 4 cubes is optimal an unless you absolutely cannot make it work, the GP 4 cu box is best. Keep in mind that many (most) manufacturers usually recommend subwoofer boxes that are actually on the small side as it makes the fitment more desirable. When it comes to sub enclosures, bigger is usually better within reason. This is based on longstanding applied subwoofer enclosure design; It's physics and you cannot change that.

 

[spokey9 5,000+ posts]

My subs are in sealed box but .2 cuft bigger or smaller than what I'm currently running makes a pretty big difference between soundng ok and sound great.

 

[Mr FaceCaser]

My subs are in sealed box but .2 cuft bigger or smaller than what I'm currently running makes a pretty big difference between soundng ok and sound great.

Alright thank you