Very low tuned ported box


matmonster58

CarAudio.com Newbie
Apr 5, 2020
4
0
Virginia
My beginner sub (10in I found on Craigslist) has dry rotted and ripped and I need a new sub.

I'm looking at a Skar Audio SVR-10 for a compact enclosure around 2cuft. I like the sound of sealed boxes and im not a fan of boomy bass.

Anyways when I modeled the driver in a ported enclosure of the same size tuned to 18hz, I got the same response of a sealed enclosure but louder and then a steep roll off below 20hz. Is this realistic?

Will a ported boxed tuned super low sound like a sealed box but louder?
 

Bobbytwonames

Pro Pot Stirrer
Aug 28, 2018
2,087
-152
My beginner sub (10in I found on Craigslist) has dry rotted and ripped and I need a new sub.

I'm looking at a Skar Audio SVR-10 for a compact enclosure around 2cuft. I like the sound of sealed boxes and im not a fan of boomy bass.

Anyways when I modeled the driver in a ported enclosure of the same size tuned to 18hz, I got the same response of a sealed enclosure but louder and then a steep roll off below 20hz. Is this realistic?

Will a ported boxed tuned super low sound like a sealed box but louder?
Steer clear of Skar. American Bass or Sundown is a better option.
 

Bobbytwonames

Pro Pot Stirrer
Aug 28, 2018
2,087
-152
Preferably less than $150. I want a sub for sq and to bring out the bass in my daily music. I listen to folk, pop, rock, jazz, kinda everything
One of these should work for you. I don't know which amp you are using. Buy a DVC2 if your amp is one ohm stable.
Screenshot_20200405-145254_Amazon Shopping.jpg
Screenshot_20200405-145338_Amazon Shopping.jpg
 
OP
M

matmonster58

CarAudio.com Newbie
Apr 5, 2020
4
0
Virginia
Thanks but back to the original question. Will a sub in a very low tuned enclosure sound like a sealed box but louder?
 

wew lad

wew lad inc
Mar 22, 2015
6,147
198
VA
Thanks but back to the original question. Will a sub in a very low tuned enclosure sound like a sealed box but louder?
In theory yes, in reality a multitude of variables will effect that. Driver orientation in your vehicle, port loading, and port placement - to name a few. It's worth trying though.
 

SlugButter

CarAudio.com VIP
Nov 5, 2019
277
91
arizona
Once you start getting under 28 hz or so, the port will become very large, making the box very large also. I’m not really discouraging you, because I have done this, and have yielded good acoustical results. If you’re going for practical, 2 sealed 10s would be in a much smaller box at this point and yield nice results. The negative side of that is you now need double the amplifier power.
 
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n2audio

OPTIDRIVEN
10+ year member
Dec 29, 2001
5,689
58
Lawrence, KS
My guess is you'll run out of useful xmax before you get close to the theoretical FR curve. I could be wrong, I didn't model it, but that's what I've seen with my models. Make sure you've entered your amp's power in the model, and look at your cone movement plot.
 

ez2hotwire

Old head into SQ now
10+ year member
Aug 10, 2004
133
0
NJ
I love the low tuned box (here was a 3.5 cuft tuned to 23hz for a 15” Brahma). Way louder than in a sealed box. But...it took up my entire trunk. I only had enough space over the wheel well hump to squeeze an amp for it. If space isn’t an issue, go for it!
 

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