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<blockquote data-quote="drpeeb" data-source="post: 5892039" data-attributes="member: 609183">Sorry, I had this wrong the first timeIn math, a 3 dB gain is equal to 100% more, or double your original value (10W -&amp;gt; 20W is a 3 dB increase):Original value + 3 dB = double your original value (example 10W -&amp;gt; 20W)Original value + 4.8 dB = triple your original value (example 10W -&amp;gt; 30W)Original value + 6 dB = quadruple your original value (example 10W -&amp;gt; 40W)... so again if your 6 dB increase is accurate, I don&#039;t know how you couldn&#039;t hear it!Oh, and one of the beauties of the PDX-5, with 300W RMS at either 2ohms or 4ohms ... you should be able to put in two 4ohm DVC subs at 150W each, and just yank one out when needed (if they&#039;re in separate enclosures that is).The Alpine SWS-1043D (~$70) is a 4ohm DVC sub that can handle 300W RMS/ 900W max. I ordered two of them.Kinda wanted the Alpine SWR-1042D &quot;Type R&quot; (~$105) (4ohm DVC) sub, but too darn deep and I&#039;m not sure the PDX-5 has enough power for one, especially two of them.</blockquote>

[QUOTE="drpeeb, post: 5892039, member: 609183"] [B][I]Sorry, I had this wrong the first time[/I][/B] In math, a [B][I]3[/I][/B] dB gain is equal to 100% more, or [I]double[/I] your original value (10W -> 20W is a 3 dB increase): Original value + 3 dB = double your original value (example 10W -> 20W) Original value + 4.8 dB = triple your original value (example 10W -> 30W) Original value + 6 dB = quadruple your original value (example 10W -> 40W) ... so again if your 6 dB increase is accurate, I don't know how you couldn't hear it! Oh, and one of the beauties of the PDX-5, with 300W RMS at either 2ohms or 4ohms ... you should be able to put in two 4ohm DVC subs at 150W each, and just yank one out when needed (if they're in separate enclosures that is). The Alpine SWS-1043D (~$70) is a 4ohm DVC sub that can handle 300W RMS/ 900W max. I ordered two of them. Kinda wanted the Alpine SWR-1042D "Type R" (~$105) (4ohm DVC) sub, but too darn deep and I'm not sure the PDX-5 has enough power for one, especially two of them. [/QUOTE]

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