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JL 10W7 ported vs. 2 SI SQL-12s sealed

4.2K views 11 replies 5 participants last post by  Nakamichifan  
#1 ·
Hey folks!

I've got a 2-door JL Wrangler, with the following equipment:
Stinger Heigh10 HU using variable optical out
MiniDSP 8x12 w/ Dirac Live
JL XD800/8, sending 75w to each tweeter and mid, 200w to each mid-bass
JL XD1000/1, sending 800w to sub
Hertz ML280.3, ML700.3, ML1650.3
JL 10W7 in 1.5 cubes net, ported at 30Hz, downfiring; went with down-firing so that there is still some cabin gain with the top down.

My system sounds great to me, and I've really been enjoying it, and don't have any actual complaints, but it's fun for me to iterate and improve.

After seeing DavidRam being able to fit 2 12s in his 2-door Wrangler (something I didn't realize was possible when spec'ing my build), I've started to wonder how the sound in my system would change if I switched my sub-section out for 2 Stereo Integrity SQL-12s, in a down-firing sealed box, with roughly 1 cube each. Note: I would be keeping the same XD1000/1 amp. So instead of 800w @ 3ohms on the 10W7, I would have 1000w @ 2ohms on the 2 SQL-12s, i.e. 500w each (which obviously is well below the power handling capability of the SQLs).

I modeled my ported 10W7 setup @ 800w against the SQL-12s @ 1000w, in WinISD, and the single 10W7 appeared to model better based on my limited knowledge (see below). Am I missing something? I am very new to WinISD. Green is the W7; Blue is the SQLs.


Is the model not telling the whole picture? What difference would you expect me to hear if I made the switch?

Thanks!
 
#2 ·
That doesn't look right. @daloudin is our resident winisd expert... Hopefully he'll see the tag. I would think the 2 SQL's would beat up the 10w7. You?
 
#3 ·
Yea, that's what I was expecting, especially given the sensitivity. Probably I did something wrong
 
#6 ·
Sealed in ~0.7cuFt I'm running a single and it's got no problem with the Taramps Smart 3K which dynoed at 3kW into 2 ohms. So sealed you'd need something like an SFB-5000d at 1 ohm to maximize.

When I get thru shopping with my beautiful wife I'll model the possibilities for you.

Sent from my SM-G965U using Tapatalk
 
#7 ·
Sealed in ~0.7cuFt I'm running a single and it's got no problem with the Taramps Smart 3K which dynoed at 3kW into 2 ohms. So sealed you'd need something like an SFB-5000d at 1 ohm to maximize.

When I get thru shopping with my beautiful wife I'll model the possibilities for you.

Sent from my SM-G965U using Tapatalk
Haha cool, thanks. Yea, it seems to me like switching only makes sense if I go with more power, which makes sense. I'm definitely not looking to switch out my amps at this time. Was just curious if there was a quick sub/enclosure alteration I could experiment with. 1 12" SQL ported could work, but I don't think that will be that different from what I'm currently running.
 
#9 ·
That looks about right, you're losing a peak of 3 db from 20-70 hz because of the sealed versus ported comparison, but you're gaining below 20 hz and the group delay will be much lower with the sealed subs. Your 3 db loss can be offset with another 1000 watts though, with much better sq.
 
#10 ·
Thanks guys; this is awesome info and makes sense to me. I'll need to decide where this sits on the priority list!

Seems obvious that, if I went this route...I'd pretty much immediately start thinking about more amplification 🙃

Slippery slope!
 
#11 ·
Thanks guys; this is awesome info and makes sense to me. I'll need to decide where this sits on the priority list!

Seems obvious that, if I went this route...I'd pretty much immediately start thinking about more amplification [emoji854]

Slippery slope!
More amplification which leads to needing more sound deadening and rattle/buzz attenuation which leads to my front stage can't keep up with my subs now... welcome to the rabbit hole!

Sent from my SM-G965U using Tapatalk
 
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