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<blockquote data-quote="L4R63N7" data-source="post: 8119114" data-attributes="member: 655394">I blew out my sub and I&#039;m looking for a replacement.&nbsp; I am looking at the Rockford Fosgate P3D4-10.&nbsp; I was comparing it to the one I blew out (Rockford Fosgate R2D4-10).&nbsp; I was looking at the SPL and RMS ratings to determine how loud they could get.P3d4-10: SPL=82dB RMS=500~27dB&nbsp; =109dBR2D4-10: SPL=86dB RMS=250~24dB&nbsp; =110dBIf I&#039;m doing the math right, the P3D4 is actually a bit lower than the other.The R2D4 is priced at $69.99 While the P3D4 is $229.99What could make the other sub cost so much more?I did find a few points that would affect the cost, but I&#039;m not sure if there&#039;s more to it that I&#039;m not seeing.&nbsp; I noticed the Frequency response is 26 on the P3D4 and 45 on the R2D4, the materials they use on the P3D4 are also better.&nbsp; I was wondering if maybe the level of distortion might be less too.&nbsp; But how can you figure that out?&nbsp; I checked the Manual and can&#039;t find anything referring to THD or S/NR.Are the Punch series woofers really much better than the Prime and are they really worth the extra money?</blockquote>

[QUOTE="L4R63N7, post: 8119114, member: 655394"] I blew out my sub and I'm looking for a replacement. I am looking at the Rockford Fosgate P3D4-10. I was comparing it to the one I blew out (Rockford Fosgate R2D4-10). I was looking at the SPL and RMS ratings to determine how loud they could get. P3d4-10: SPL=82dB RMS=500~27dB =109dB R2D4-10: SPL=86dB RMS=250~24dB =110dB If I'm doing the math right, the P3D4 is actually a bit lower than the other. The R2D4 is priced at $69.99 While the P3D4 is $229.99 What could make the other sub cost so much more? I did find a few points that would affect the cost, but I'm not sure if there's more to it that I'm not seeing. I noticed the Frequency response is 26 on the P3D4 and 45 on the R2D4, the materials they use on the P3D4 are also better. I was wondering if maybe the level of distortion might be less too. But how can you figure that out? I checked the Manual and can't find anything referring to THD or S/NR. Are the Punch series woofers really much better than the Prime and are they really worth the extra money? [/QUOTE]

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