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Stacked Ultras!
Tower Of Power!! Two SVS Ultra Subs Pushed by 2000 watts from a new Crown K2 amp, these are incredible!
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Do NOT do this! Jig saws don't work like a router and I never took the plunge. Did second one freehand and it worked much better. |
Parts are finished, ready for assembly after applying edge veneer, stain and polyurethane. It's critical to have the spacers cut the same length and square. Use a fixtured cut-off saw. |
Assembled, ready to go! Notice the felt applied to the inside and 1/2" on the bottom of each ring. No wood-to-sub contact. Ended up with nice, snug fits. | Here's a closeup of the center section that spaces and supports the stack. | Detail of the upper ring. There are 4 1/4-20 machine screws that are threaded through inserts and push the upper spacers against the ceiling to lightly compress and stabilize the pair. |
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Results? I was not overwhelmed when I went from single to dual Ultras with the Samson S1000 amp (500 watts/Ultra). While SPL's were great and much more than I needed, the impact that I had with my single and an old 600 watt amp was missing. I upgraded to the Crown K2 amp, supplying 1000 watts to each of the two Ultras and got it back - in spades! Even though I had them close side-by-side, stacking them seemed to give a cleaner audio image. Besides, it LOOKS COOL!! Bear in mind that these are just my impressions, and are contrary to advice from more experienced people. I offer no assurance that I really heard what I think I heard or that I did not have anything else goofed up, so YMMV!
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