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<blockquote data-quote="hispls" data-source="post: 8446910" data-attributes="member: 614752">If you need to play 20hz tones you probably need more cone area.&nbsp;&nbsp; I&#039;d suggest getting the proper softparts in those subs then building a box to manufacturer specs and see how that goes for you.&nbsp; It just might be that they have their recommendations for a reason?How&#039;s that working out for you?You must test with subs connected.&nbsp; It would be interesting to see what that &quot;clipping&quot; light is actually doing because if you were getting even half rated power from that amp your coils would be melting in about 3 minutes.&nbsp;&nbsp; The difference between 14V and 14.8V is inconsequential.&nbsp; Charging at 14.8 would be optimum, but again that&#039;s not going to save the day for you.That&#039;s barely half enough to attempt to run a legit 20K.&nbsp;&nbsp; Guys I know who run two 10K&#039;s or 4 5K&#039;s are working with 16 batteries... it takes power to make power.Find someone who knows what they&#039;re doing to co-sign on that statement.Good luck with that.&nbsp;&nbsp; That 1dB you&#039;ll gain from dropping all that dough into double the cost batteries or cap bank will not be audible.Certainly a far cheaper option than trying to go 16V.... though you&#039;ll need a lot of batteries if you hope to see anything close to rated power out of your amps without blowing them up.Because the 20K you have isn&#039;t enough power and your pair of 3&quot; coil woofers need more.....&nbsp; &nbsp; I can assure you that from where you&#039;re sitting just swapping amps isn&#039;t going to &quot;fix&quot; things.... though a second alternator would be a good idea to help with your woefully inadequate battery bank.Not nudes... that would get V&amp;amp; assuming they&#039;re high school girls.&nbsp; Just pics of them with you.&nbsp; Make sure you get pics of the hands so we can make sure they&#039;re not just trannys.Legion told me.My guess is that you haven&#039;t gained your amp correctly, aren&#039;t feeding it properly, or your box is a colossal failure.&nbsp;&nbsp; You should be smelling coil really quickly even at 10K and from what I&#039;ve seen 20KW pair of 18&quot; B-pillar walls do 160 and up.Do measure voltage on that amp.&nbsp;&nbsp; Sine wave and with subs connected.&nbsp; Look into doubling your electrical if you plan to run any sort of 20KW, then consider rebuilding your box.&nbsp; Your thread was a train wreck so I didn&#039;t catch anything beyond the double layer (which is inadequate) wood.&nbsp; I&#039;d really like to see some metering done to see frequency response and output so we can predict how bad this really is.&nbsp; That data may reveal something you miscalculated or missed.</blockquote>

[QUOTE="hispls, post: 8446910, member: 614752"] If you need to play 20hz tones you probably need more cone area. I'd suggest getting the proper softparts in those subs then building a box to manufacturer specs and see how that goes for you. It just might be that they have their recommendations for a reason? How's that working out for you? You must test with subs connected. It would be interesting to see what that "clipping" light is actually doing because if you were getting even half rated power from that amp your coils would be melting in about 3 minutes. The difference between 14V and 14.8V is inconsequential. Charging at 14.8 would be optimum, but again that's not going to save the day for you. That's barely half enough to attempt to run a legit 20K. Guys I know who run two 10K's or 4 5K's are working with 16 batteries... it takes power to make power. Find someone who knows what they're doing to co-sign on that statement. Good luck with that. That 1dB you'll gain from dropping all that dough into double the cost batteries or cap bank will not be audible. Certainly a far cheaper option than trying to go 16V.... though you'll need a lot of batteries if you hope to see anything close to rated power out of your amps without blowing them up. Because the 20K you have isn't enough power and your pair of 3" coil woofers need more..... I can assure you that from where you're sitting just swapping amps isn't going to "fix" things.... though a second alternator would be a good idea to help with your woefully inadequate battery bank. Not nudes... that would get V& assuming they're high school girls. Just pics of them with you. Make sure you get pics of the hands so we can make sure they're not just trannys. Legion told me. My guess is that you haven't gained your amp correctly, aren't feeding it properly, or your box is a colossal failure. You should be smelling coil really quickly even at 10K and from what I've seen 20KW pair of 18" B-pillar walls do 160 and up. Do measure voltage on that amp. Sine wave and with subs connected. Look into doubling your electrical if you plan to run any sort of 20KW, then consider rebuilding your box. Your thread was a train wreck so I didn't catch anything beyond the double layer (which is inadequate) wood. I'd really like to see some metering done to see frequency response and output so we can predict how bad this really is. That data may reveal something you miscalculated or missed. [/QUOTE]

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