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At Florida State Finals Tampa Fl, September 9th. Pipo finished with a 162db running his 16 12" AA Havocs and 4 Loudforce 7.5Ks. Enjoy!

It's not hard to build a 1500w amplifier and put a 1kw label on it.......

Nice Cam you got there sir!

just laid the chat to bed, time to browse the web while eliminating these last 6 cold ones

And the important difference is that SPL competitors worry about what a meter says whereas the average daily user is concerned with the resultant sound. The main issue is SPL competitors trying to convert all of their experiences from the lanes on a meter and applying it to every daily system when the overall goals are completely different. A 1db difference in the lanes is a big deal, in a daily system it's literally not going to matter one damn bit. As a result the things an SPL competitor did to gain that 1db may not be applicable or advisable to a daily user. Daily systems can do things like sacrifice some overall system efficiency to gain low end efficiency or an improved response curve or system damping whereas that might not be acceptable to an SPL competitor because "it hurt their score". When there's a meter involved, either burp or averaging, there are going to be compromises made in that system to improve the score on a meter which is not necessarily going to be relevant to a system focused on sound rather than score. Prime examples are the three issues you mentioned above...the first two have no reason to even enter the mind of a person designing a daily driver system as they won't matter in the slightest, and if someone with a daily system is designing their enclosure for efficiency rather than response then they are designing it wrong. I'm not saying there is no overlap between the two, there's bound to be some as we're dealing with the same physics.....but there are different goals and focuses, and the means to those ends are not necessarily going to carry over from one area of focus to another. IMO SPL competitors tend to end up with tunnel vision and view everything in terms of how it scored on a meter when that's not the focus of 95% of the audio market.

HoneyBee, my mothers puppy.

Competitors operate under a unique set of circumstances. For the normal everyday user, such as the OP, what a burp competitor experiences and focuses on is completely and utterly useless. For a daily system, it will always be better to focus on maximizing displacement and proper enclosure design before even considering increasing power. Scott Owens was the first to break 180db with thirteen 12's, so i would raise issue with the premise that least cone area is best for burping. I would gander a guess the issue you raise with cone area and SPL has significantly more to do with the last issue you mention than the 1st two, maximizing cone area while also maximizing enclosure efficiency is a balancing act......which is again only significant when we narrow our focus to that of a burp SPL competitor....which has absolutely no bearing on the daily user. I'll add that it is possible for a daily user to have more cone area than their space allows, but that has more to do with appropriate enclosure design in general and not the efficiency aspect that SPL competitors focus on. When I mentioned "efficiency" earlier it was not in regards to subwoofer enclosure efficiency........adding a 2nd subwoofer (where airspace allows) even if we keep power the same is a 3db increase, you double amplifier power on the same sub setup and you'll gain somewhere less than 3db - after power compression - (that's after not only spending $$ to upgrading the amplifier but also more than likely the electrical system, wiring, etc), which is the more efficient upgrade for a daily listener from an acoustic and money/time spent perspective ?

Alt took a dump last night. I swear, if its not one thing, its another. FML. Anywho, got all my speakers sounding good and set correctly. I am finally content for the following months as stated before. Heres just a random video I took. BTW, my explorer was running on the D3100 for about, ~60 miles/~1.6hours. From the time I noticed, to the time I got the alt the next morning. Its just a replacement, OEM refurb. Here are some pics. The eX from last weekend show Wish I had a better cam Today, me and Swift went out to another show, at first, I thought we was the only ppl there for spl A little bit longer, a few other ppl showed up. Got to here my first 160, it was loud lol. Also heard my first Sq system, wow! Swift and I gave a few demos, ppl seem to like our installs.

According to three different FEA programs xmax at 82% BL (10% distortion) is roughly 28mm. At 70% BL (20% distortion) should be between 30 and 35. I'll wait for Klippel results to know exactly. I could have abused the sub for a video but I needed a sub in good working order for testing (a crumpled coil wont make for good T/S testing) and really didn't feel like reconing it. I'm going to make a few changes but so far I think its a pretty decent sub for $350ish bucks.

10*Log(Power1/Power2) = Power Difference (in db) So in your case, the difference between 1500w & 1kw is 10*Log(1500/1000) = 1.76db This is the maximum theoretical difference in output. It does not account for real world factors which will only decrease the difference to something less than that predicted by the formula. For example power compression (<--explained in the link), the ability of your electrical system to support the larger amplifier, etc etc. For power compression, when you're already at 500w on a driver rated for 750w or so, expecting atleast 1db of power compression is not unreasonable and is likely pretty conservative which would make the actual difference less than 1db. Audibility wise less than 1db especially in the subbass is not going to be audible. Between 1db and 3db it's possible for the difference to be audible depending on circumstances surrounding the listening session but it's not going to be a dramatic difference, in most cases the difference is not worth the cost of the larger amplifier especially if further electrical upgrades are necessary. Beyond 3db (actual acoustic difference, not theoretical difference) it's going to be up to the individual user at what point the cost of the added equipment is worth the difference in acoustic output. It makes more sense to improve your enclosure and maximize your displacement potential long before you ever think about amplifiers. Increasing amplifier power is the least effective and least efficient method of increasing output with the lowest cost/benefit ratio, especially when you already in the 1kw range because to increase power enough to make an audible difference you would then also need to upgrade the electrical system to support the increased amplifier power which only costs more money and time. But yes, it can be slightly more "effective" to upgrade power with multiple subs as opposed to a single driver because the power is distributed among multiple motors which could potentially mean that power compression is lower. However, increasing amplifier power to reach the goal of increasing audible output is and always should be the absolute last factor considered, and more times than not it isn't going to be a worthwhile "upgrade".

This is what a build log should be......... NO CHATROOM JUST FLAT OUT SEXY TIME!

Putting the R in a low ported box is not it's forte. Most likely that is your "lows" problem. I am pretty sure that if he is "hard on stuff" he'll be more than happy with a BL. Could also run a Zcon though.

Thanks guys! I love the new setup, sounds incredible, Had several bailouts already and subs not broken in yet,LOL... Voltage is alittle better with the extra batts but still could use a D3100 I think. Here are some daytime pics of everything, headunit it Underhood HDR rear window view Another rear window view showing port (207sq in) I can see perfectly out rear window, Its not below window line but functional.

My nightmare Both bats in and cleaned up, not much room to work with just enough. Cover panel back on and finished Sorry for the shitty pics.

Finally making some progress. Box going back in was hell, had to take off the leather beauty panel cause we ripped it and I redid it, no biggie. Box is massive In and ready Went ahead and deadened all doors but only took a pic of this one. After lots of brain storming and not wanting to start on fiberglassing doors and realizing how huge those Crescendo 8's are I decided to pick up some Rockford Forsgate Punch Pro Audio 6.5's for the stock location. Also mounted the Ft1's off axis on doors near the mids. The mids are very nice and loud. After getting in all in and alot of EQ'ing running active I have to say that it sounds awesome. Its not perfect but it will suffice until I decide how I want to do door panels. I think I will sell the Crescendo 8's and buy another set of the Rockford pro audio mids, The are expensive but are very shallow and very well built. anyway here are a couple pics I have the final 2 d3400's coming this week and I will be done fooling with this shit for a minute. Right now it is brutally loud and without the worry of voltage I will be happy. Maybe I can get it metered soon. It shouldnt have a problem going 152's I would think. For a box tuned low at 30 it slams

Car has fresh paint. Overcast phone camera pic, but you get the idea .