MAYBE Sealed setup.

[Savackz]

What do you guys think the advantages and disadvantages would be to run 2 si ht18s at 2 ohms on a sq3500 compared to my current setup of 2 xfl 15s at 1 ohm on a sq3500? In terms of sound, not space.

 

[blazian87 10+ year member]

A big advantage will be that your response curve will be alot flatter than your current setup, better for more types of music. You might start hearing more of those rumbling lows than before. I think overall it should sound better than your current setup. A disadvantage will be you won't be able to peak at 35hz and get as good of a score if loudness matters. But since you're moving up to 18's, it might even out almost. Who knows. I think the 15's ported will still be louder overall since you have a nice octoport to go with it. But yeah you will be sacrificing more trunk space which you already know about so that's something to consider. Are you not satisfied with how your current subs sound? Why go through all this trouble again?

 

[Jeffdachef 5,000+ posts]

I was pretty satisfied when i upgraded my buddy's 12 ported to a 15 sealed. Not too far off in output but it sounded a lot better.