ibanender

What variety of wood is that? Isn't that planks and not a solid sheet?

Does it matters why he wants it to peak at a low freq? I don't know why you are ranting about it. He just sets a goal and tries to get to it. Some people think it's a failiure, i think it's a (expensive) lesson to learn Sometimes some people don't know any better or don't think for themselves, and making them think can inspire their own thoughts, potentially making them realize how dumb of an idea it was. It's been talked about at length with him. He wants it because he wants it. You can't argue reason with an unreasonable person, so we've all given up on that front. True. In that case, I think he should try to do a 150 @ 5 hz instead.

I have a low tolerance for ignorance. By chance were they SA15's or another 15? More cone area in a single 15 than three 8's, and the 15 has more excursion than an 8 as well. That's why I used the term "displacement". An SA15 has 48% more displacement when you consider cone area and excursion. Again, this is assuming you're running all of them at full stroke. The SA8's would have significantly more motor force and would be more efficient, as well as 50% more power. In theory, the power and efficiency make up for the displacement differences, making things nearly equal. Oh wait, that's what I said before..... You do know I had SA8's 4 months before they shipped and help develop them right? There is only 1 person that knows more about SA8's than me, and that's the person that designed it. It's not a matter of smaller sub vs bigger sub, it's THAT sub in particular when tuned below 35 hz loses output very quickly across the board. The difference between a 30 hz tune and 35 hz tune in the same box was 5 dB peaking within a few hz. When the Fs is 44 hz, you can't expect it to play 30 with exceptional output, even in a 30 hz tune. I'd hate to talk about something on the forum and actually have experience with it rather than regurgitating simulated graphs and what other people say that also have no experience....... My 10s have no problem performing well playing in the low 20s htz range with considerable amount of spl too ... To the op, i rather see 4 8s rather than 3 ... Just my suggestion please ... Your 10's aren't SA8's.

Too far Not for the OP who said central Florida, or all the people that go to SBN from Maine, New York, Pennsylvania, Ohio, Missouri, Illinois, or Canada.

148 still isn't 150 am I really trying to get a 150 though? Or am I trying to feel people out to see what really is impressive for a cheap daily driver at 25Hz? Cuz over the last few days this has been fruitful. I have found theres always goign to be the rude comments, and the people saying 150 is easy and can be done for $2k, but the majority say 148 @ 25 is very good period, let alone chap, let alone daily driver. Sure the thread is titled "what will it take to get 150" and if your stuck on that, stay stuck. I think the better question is why 25 hz? If music doesn't play it, why make it peak there? Is there a new pissing match I'm unaware of about who can peak at the most useless frequency? Does it matters why he wants it to peak at a low freq? I don't know why you are ranting about it. He just sets a goal and tries to get to it. Some people think it's a failiure, i think it's a (expensive) lesson to learn Sometimes some people don't know any better or don't think for themselves, and making them think can inspire their own thoughts, potentially making them realize how dumb of an idea it was.

Playing low, and playing low obnoxiously are different things.

More cone area in a single 15 than three 8's, and the 15 has more excursion than an 8 as well. That's why I used the term "displacement". An SA15 has 48% more displacement when you consider cone area and excursion. Again, this is assuming you're running all of them at full stroke. The SA8's would have significantly more motor force and would be more efficient, as well as 50% more power. In theory, the power and efficiency make up for the displacement differences, making things nearly equal. Oh wait, that's what I said before..... You do know I had SA8's 4 months before they shipped and help develop them right? There is only 1 person that knows more about SA8's than me, and that's the person that designed it. It's not a matter of smaller sub vs bigger sub, it's THAT sub in particular when tuned below 35 hz loses output very quickly across the board. The difference between a 30 hz tune and 35 hz tune in the same box was 5 dB peaking within a few hz. When the Fs is 44 hz, you can't expect it to play 30 with exceptional output, even in a 30 hz tune. I'd hate to talk about something on the forum and actually have experience with it rather than regurgitating simulated graphs and what other people say that also have no experience.......

So purple Kool-aid isn't purple or Kool-aid, got it. You are thick headed. IE it isn't for turbulent reasons that you go to those extremes. and based on that, nothing I've said is flat out wrong. You yourself said making it thicker IS a solution to making a box solid, making the answer to the OP, "a lot". A lot sure that isn't being contended, but bracing is important as well. Thickness isn't an end all be all solution. Bracing isn't an end all be all solution. Never said it was, but it is important. If it's not for turbulent reasons (And how do you get turbulence? Air flow conflicts), then explain why that is? After all, you did say it's for "laminar flow" that apparently isn't flow at all, despite what the definition and how it works is. You didn't have to out M5 like that here.

3 8's is less displacement and the power gain is negligible. The 8's would be more efficient though. If you're wanting to tune below 35 hz, do the 15.

Spring Break Nationals, problem solved.

Peak ratings are only marketing, the biger the number the more liklely someone will buy the product. Only look at rms. That is the true power handling How much they can handle and peak rating are different things. You can burp 4000 watts on a single SA8 and the coil will not fail. Mechanically, it's destroyed in pieces, literally. In my SPL box, I've burped 2300 watts probably 100 times and never had a physical or mechanical failure, but that's in MY box. In an ordinary box, you'd hit mechanical limitations a long time ago. So the short answer is, the coil won't fail unless your a moron, and your power limitation is your box, and nobody can say exactly what that number is.

Yup, use your ear. The fact that you're using the passive xovers on the components means you could run the front channels full range. Also, settings your gains by voltage is not a good idea, especially if it's resistive and not reactive. It doesn't matter what voltage the amps are putting out of it doesn't sound right.

If you wanna use it daily, I wouldn't use Stetsom LOL $1500 isn't gonna get you a real 6000 watts brand new, at least not in a single amp. If they have to warranty 10% of their amps, they'll be out of business the week after. That's assuming they actually do what they claim. You haven't heard anything from Diablo Audio since the transformer fiasco, have you? That's because they closed the doors. You could do four SAX-1200d's and get about as close as it gets. Strap each pair @ 1.2 ohms. Also, I could get 4 of them out in time.

That doesn't surprise me at all. A friend of mine had a 200 or 220 from him that did 24 amps, even after it was sent back 3 times. Also, my friend had to use the regulator off of his stock alt because he didn't send the alt with a regulator at all. I think the general consensus is the load testers don't work right if you like Iraggi, because clearly the alternator can't be flawed..... See the vents on the tester? That's to dissipate heat, from the load it puts on it. It basically dead shorts it to a coil, like a heater. Load testers work, I used to have one I used for the same purpose. There are different levels of amperage load testers, but 74 amps seems like an odd number to be maxing out, especially when they gotta test over 100 amp alts all the time that are stock. So for the poster who said a tester read 1200 amps because it maxed out the 100 amp tester, his said 74, which is less than 100, and certainly not 1200. Good luck on getting an email response, he's known for not answering emails, or phone calls, or keeping promises, or having a product that works. This has been going on for at least 7 years and somehow people keep buying them. Last I knew, he threw in the towel and sold the name to somebody.

Vehicle: 1990 Honda CRX (if they're instantly loud, go get one yourself and replicate what people do in them) Equipment: POS alt I get 86 amps out of, 2 Stinger batteries, one Sundown SAZ-3500d, one Sundown SA8 Music: 144.2 @ 37 hz in kick, 142 something on dash @ 37 hz (just a regular daily box, I don't mess with music boxes for it) Tones: 152.1 @ 68 hz in kick, 148.6 @ 62 hz on the dash (a lot of testing, competition box)

148 still isn't 150 am I really trying to get a 150 though? Or am I trying to feel people out to see what really is impressive for a cheap daily driver at 25Hz? Cuz over the last few days this has been fruitful. I have found theres always goign to be the rude comments, and the people saying 150 is easy and can be done for $2k, but the majority say 148 @ 25 is very good period, let alone chap, let alone daily driver. Sure the thread is titled "what will it take to get 150" and if your stuck on that, stay stuck. I think the better question is why 25 hz? If music doesn't play it, why make it peak there? Is there a new pissing match I'm unaware of about who can peak at the most useless frequency? There are people saying they CAN do it, but have they? There are a lot of people that haven't built a thing in their life and think WinISD is accurate.

So purple Kool-aid isn't purple or Kool-aid, got it. and based on that, nothing I've said is flat out wrong. You yourself said making it thicker IS a solution to making a box solid, making the answer to the OP, "a lot". A lot sure that isn't being contended, but bracing is important as well. Thickness isn't an end all be all solution. Bracing isn't an end all be all solution.

Yes that's what I was thinking. I bought a 4'x8' sheet. I'll have plenty to build another box later on. The X8 looks cool on paper, thought maybe I could get one of those for the next project. I love having more than 1 car Still waiting on my SA8. I ordered Tues or Wed and it hasn't shipped yet. Now I know why your name looks familiar! You have (had) the red crx on youtube. Your Cake video is what convinced me I wanted this sub. Hoping to get started cutting tomorrow. Yup, I'm that guy. I'll have an X8 sometime in February to start initial testing.

Judging by your sig, you don't do mid 150's or 160's, so how can you say you could easily do it, if you've never done it? If you can do it so easily, why haven't you done it? Again, last I checked 147 isn't a 150.

I was giving you an out. Obviously you were too stubborn to take it. The resistance that is seen in laminar flow is the same resistance to the air moving in a box. It is still not flow and I never said it was flow. Go re-read. You keep taking one phrase out of context in this whole thread. This whole discussion is about the fact that you were recommending NO BRACING which is flat out wrong based on the OP's first post. So now you're saying a term YOU said applied with the word "flow" in it, isn't flow? How can it not be flow if what you said is flow, isn't flow? The OP was and based on that, nothing I've said is flat out wrong. You yourself said making it thicker IS a solution to making a box solid, making the answer to the OP, "a lot".

No need to bother quoting here, but make up your mind if there is flow or not. First you throw out a term saying smoothing helps flow, then you say there is no flow in the box. Instantaneous flow is still flow, laminar flow is flow, but then you say there is no flow. Since you're the master of all things enclosure, lets see some examples of your perfect boxes.

Keep this in mind. We don't have an X8 yet, it's still a drawing at this point. We don't know what box it will need or work best in, and it's not that big of a box to start with. Regardless of all that, you won't get one till June at best. I'd build for what you have, and build again as necessary because after all, it's a small box. You can build like 4 individual 8 boxes out of 1 sheet of wood.

148 still isn't 150

I helped (and continue to) develop the SA8. I wouldn't do a 3" port. You can run one sealed and it'll be just fine, but that doesn't mean you're getting your monies worth. Ever put 4000 watts clamped on an SA8? We've tested all power levels i ran 2 3ks strapped @ .5 each on 4 of em i dont think he cares about 4k on one driver. He doesn't care about your 2 3k's either. Power levels don't matter when your box is wrong to start with.

Car audio installation. Pay a "professional " to do it for you bro. that just defeats the whole purpous of learning in my opinon.. Learning is messing up 1 amp. Stupidity is doing it more than once.