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a little help, subwoofer build
a little help, subwoofer build
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Old 31st October 2014, 05:12 PM   #1
UCrazyKid is offline UCrazyKid  United States
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Default a little help, subwoofer build

Hi guys!
So I have a JL Audio 10w3v2 in a 1 cu/ft sealed box wired for 4 ohms. I'm running 300 watts to it from an outboard mono block amp and bass management coming run from my Pre/Pro.
This box really did well in my car, but now it's in the house. I'm contemplating modifying the box. Thoughts?
1. build new 2 cu/ft box to retune
2. place a port in the 1 cu/ft box (will stay small then)

Any tips?
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Old 1st November 2014, 02:52 AM   #2
GM is offline GM  United States
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Location: Chamblee, Ga.

Well, it depends on what your performance goals are, i.e. music genres, peak SPL, room layout vs speakers, sub, listening position, etc..

Personally, Id either build a ~3.2 ft^3/~20 Hz Fb extended bass alignment [EBS] alignment [white] using a pair of PRs or a bit larger inverse tapered TL [TQWT]/~20 Hz Fp, i.e. morph the cab and its necessarily large, long vent into one tapered tube [usually folded in half] and in either case, stick it up against a wall, or better yet, in a corner to ensure that it can handle the whole 300 W.

Sealed is ~3.2 ft^3/0.577 Qtc [yellow].

The TL would be a bit slower roll off variant of the EBS alignment, i.e. rounds over the EBS's more extended, but much sharper roll off, so tends to blend in better with a typical room's gain curve.

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File Type: gif JL Audio 10W3v2-D2 vented Vs sealed.gif (18.6 KB, 74 views)
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
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Old 1st November 2014, 12:47 PM   #3
bjorno is offline bjorno  Sweden
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Old 1st November 2014, 11:13 PM   #4
head_unit is offline head_unit  United States
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Location: Los Angeles
I cannot imagine you could fit a port into the 1 ft3 box which would be big enough in diameter to flow enough air. I concur I'd look at a larger box. I prefer "under tuned" designs, with a bit of droop (yet more extension) at the low end.
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