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<blockquote data-quote="sundownz" data-source="post: 6689528" data-attributes="member: 549523">If you will be running the NS 15 @ 0.5 vs. the Alpha 12s at 1 ohm the NS 15 will likely be louder simply from more power.Assuming they have equal x-max... just for the sake of argument... you have ~77% of *maximum* displacement of the two Alpha 12s using a single 15&quot; Nightshade (I&#039;m just using the simple divide cone diameter in half for SD calculation to eliminate calculation variances).But... neither will see full x-max at the loudest frequencies (around box tuning **) anyway so the extra power from dropping to 0.5 will likely push the NS ahead in output by a bit. Hard to find accurate T/S on the Alpha as there are so many versions but quite likely the NS v.1 has a higher motor force factor as well which will help you out in output ported.Is the difference worth making the trade ? Not so sure... and we are just talking in theory anyway... hard to say what will happen in your car.** -- We have a low tuned box reaching nearly 150 dB @ 35 Hz with one NS 15 with 2500 clamped watts and it is *still* not at full throw... box is tuned right around the 35 Hz range similar to your plans.</blockquote>

[QUOTE="sundownz, post: 6689528, member: 549523"] If you will be running the NS 15 @ 0.5 vs. the Alpha 12s at 1 ohm the NS 15 will likely be louder simply from more power. Assuming they have equal x-max... just for the sake of argument... you have ~77% of *maximum* displacement of the two Alpha 12s using a single 15" Nightshade (I'm just using the simple divide cone diameter in half for SD calculation to eliminate calculation variances). But... neither will see full x-max at the loudest frequencies (around box tuning **) anyway so the extra power from dropping to 0.5 will likely push the NS ahead in output by a bit. Hard to find accurate T/S on the Alpha as there are so many versions but quite likely the NS v.1 has a higher motor force factor as well which will help you out in output ported. Is the difference worth making the trade ? Not so sure... and we are just talking in theory anyway... hard to say what will happen in your car. ** -- We have a low tuned box reaching nearly 150 dB @ 35 Hz with one NS 15 with 2500 clamped watts and it is *still* not at full throw... box is tuned right around the 35 Hz range similar to your plans. [/QUOTE]

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