ssh

Bought a saz1500d from S.DeYoung last week, received amp today. It's in perfect condition, can't even tell it was used. Packaging was top notch, UPS would have had a hard time breaking it Thanks again.

That would be a good way to get the need for speed out of my system.

It looks like a hoot!

That site is hilarious, reminds me of http://27bslash6.com/

LOL.

SOUNDS LIKE A CHALLENGE SIR!!!!!!!!! if i got a hand job for every time they said "jon you cant do that" LOL, maybe if you call up DC Power and offer them some?

Yeah there's no way around the price, but I know the dc alts dissipate heat a lot better, better cooling, and so forth.

Or bandpass.

Cabinets are great, everything's starting to come together. I was wondering at first if that was the tv you were going to use

Amps have gain knobs for a reason. Lol, say what?!?

I'm scared of heights, but watching that makes me want to jump off...and fly!!!! Most of the videos I've seen where they fly in that suit were very short, where as he just flew and flew, awesomeness. Thanks for posting edouble.

What about switching alternators to DC Power or Mechman?

Enclosure volume isn't changing, but I understand twice the amount of air moving, so you would simply multiply the end result by the # of drivers? Sorry that wasn't clear, wherever the "air pump" is in the equation you should double it. Okay that would be reference efficiency. Doubling the reference efficiency (two drivers) is the same as doubling the power input on a single driver, which in a perfect world makes sense, but for the formula it seems to work out. So by doubling the reference efficiency, the vent speed increases but doesn't double the initial vent speed.

Enclosure volume isn't changing, but I understand twice the amount of air moving, so you would simply multiply the end result by the # of drivers?

Okay I just edited this so it wouldn't be confusing. Finding vent mach for multiple drivers, do you calculate the vent mach for one driver, then multiply that result by the total amount of drivers being used. ex: you plug in all the info for one driver into the equation, you get 10 for the result. Your using 4 drivers, so 4*10, 40 would be the vent mach for four drivers. (just made up numbers for easy explanation) OR do you multiply the reference efficiency by the total amount of drivers being used?

If anyone needs a simple bright ipad wallpaper, I made one yesterday. Don't ask me why it says "resist", I just like the word,

All the buttons are in the wrong spots. The reset button is at the very very bottom I didn't make it!

IMO hard to answer without knowing frequency and SPL level. Ie, maybe you don't care as much for the ultra lows since they don't happen so often and of course if it only occurs when your shit is wailing then it won't bug you. Are you starting to get even more why rules of thumb are a joke? I understand pretty well that rules of thumb try to cover a broad amount, that it may work in application x but in application y it's complete shit, therefore your better off modeling / calculating for each and every situation. But... I was going to make a new min port area app that mainly relied on vent mach, but now I'm thinking about just showing the vent mach and let the user ultimately decide if that's enough or not. Next question, found the formula for calculating vent mach: W is the acoustic power output of the speaker in Watts. Fb is the tuning frequency of the enclosure. R is the radius of the port. Mach is the speed of sound in air (344.8 m/sec or 1131.2 ft/sec). W = driver rms * reference efficiency. Can the result from the formula be multiplied by 2 if you were using two drivers? Or should the reference efficiency be multiplied by 2, since your creating twice the acoustical power?

If it was me, competing / burping: n3, daily loud music: smd. This is just my opinion, not fact. I haven't modeled anything, I haven't heard the n3s..., even if I had, you can't compare them with one in vehicle a and another in vehicle b, and the list goes on and on. Take a step back and think for a second, your asking a very complex question that relies on many many variables, and your asking a bunch of people on a forum what they think, everyone is just going to guess for the most part. Lets see what all effects spl: vehicle & cabin characteristics, electrical supply, amplifiers, window orientations, enclosure volume, enclosure tuning, enclosure type, driver firing position, port positions, port area, etc. "Well I've heard 2 15" smds and they hit 151db" "Oh yeah, well I've heard one 18" n3 hit 150db" "Hey I've heard one 18" smd beat both those, it hit 152db" ^That is meaningless, measuring something with far too many variables to accurately come to a conclusion. Both drivers are made by the same great people. The decision is yours to figure out.

Nem, Sets are sick.

What's a reasonable limit for vent mach in ft/sec before you start getting port noise? 113ft/sec? <-This would be 10% of speed of sound, roughly.

Time to play some nintendo? I think so.

Even You Brutus? - Red Hot Chili Peppers.

Thanks for sharing.