Miguels

that you made it seem other wise.. also seem cocky when saying prove me wrong instead of asking if you was correct. its just the way you said it

the boominator asta la vista baby

its the way you came out about it.. you made seem more like you knew what you was talking about and not a personal opinion.. you also questioned his knowledge and never asked how he did it

this guy really has no idea who tony is youre arguing against an engineer who designed amps for a living here are pictures of the most efficient amp aver made.. even after the years no person has come close to building something like it Tony Damore Posted - 12/06/2006 : 9:36:39 PM Hey guys thanks for the props!! Yes it is true the idea came from a defibrillator. It seemed silly to me that all these guys in the db drag lanes need to have 1/2 of their vehicle full of batteries and alternators to maintain a decent B+ voltage for a few seconds. That and the fact that the amount of total energy all those batteries contain is huge and they are only using a fraction of it during their burp. It is like taking a NASCAR car to a drag race. A vehicle that is designed to go 200mph for hours on end probably isn't the best design for a 1/4 mile burst. So when you look at the way a defibrillator is used its like burping an amp. Defibrillators don't have massive power cords that need mega amps at 220V, in fact some of them are portable and run off a very small battery. Why, because they don't need to shock someone for hours at a time, just a quick burst. They just draw a small amount of power continuously during 'charge up' and once all the energy they need is accumulated they release it all at once. With the operation of the defibrillator in mind, I tried to apply it to car audio. I set off to build a prototype which was based on (2) T1500.2 output sections, I had to liquid cool the MOSFETs because even the FETs in the T1500.2's were not big enough to handle the kind of power I wanted. By keeping them very cold they could be pushed beyond their limits. (This may be the radiator ect... part of the story that someone posted). Then I needed a way to store a bunch of energy, electrolytic caps and some of the carbon based caps that are commonly used in car audio were not even close to being capable of storing the amount of energy I needed, so I used 12 small motorcycle batteries in series to get 140+ Volts. Then I built a power supply that would convert 12VDC to 140VDC to 'charge' these batteries. I got this contraption all put together the night before the Annual Rockford Fosgate Employee Sound-Off. I didn't really how much power it would make exactly, but to try to shorten this long story it ended up putting out 15,030 Watts RMS! This is how 15k Watts became the goal for a 'real' amp. The first step towards making it a 'real' amplifier was I had to eliminate the array of batteries. I began searching high and low for something that would do it. I found a company that makes capacitors for hybrid cars and large wind turbines. These worked perfectly. The caps I ended up using are 400 Farads, and there are 180 of these in the T15kW. Then I needed an intelligent power supply that could monitor these caps and add energy to them as needed, and it had to be fast, really fast if this amp was going to play music and not just a burst. So during music these caps are charging, discharging, charging, discharging. The power supply in the T15kW can charge the caps 35,000 times per second. Of course many other things had to happen like finding MOSFETs that could handle it, a way to keep it cool without antifreeze and car radiators ect. The final product met all the goals and then some. The main idea is that with this technology the amplifier can put out more power during transients or bursts than the car it's connected to could supply. Again thanks for the props, look for hybrid technology to hit our smaller amplifiers in the near future. PS if you guys would like to see pictures of the original liquid cooled proto I'll post them. This proto was eventually dubbed the D'Fibrillator. haha -------------------------------------------------------------------------------- Tony D'Amore Design Engineer Rockford Corporation

I'm glad tony got his knowledge from here... The only thing the diamondboxx needs is a cassette player

even with results posted people are getting it wrong lol

have you put a pbr 300x2 on the dyno?

1167

never did but some dude i knew put his DJ loud speakers in his wagon and sounded like shit.. still didnt stop him from driving around with a coffin in his wagon going full blast down the street

i will call bs on this one. if it was true you would be dead by the DB's. unless you heard it from the other side of the world welcome to the forum

Imagine how much a pair of those and two 1000 watt amps to push them was back then, $$$$$$$$$$ i had a cheap amp and couldn't push it. i then sold it to a friend and he got the pair and got the punch amp at the time that too was the first 1k amp i ever seen. it cost about $350-$400. wasnt even $400 but was around there. the msrp was way higher though thats why its always good to know the right people

these are the subs.. first sub i ever seen with a rating of 1k rms

My step dad has been wanting to get audio in his car but has no extra money to get it done.. This is a good opportunity for him.

No complete build needed? I'm in if thats the case. Even if I don't win it helps reach the 50 contestants

I first heard some pioneer that looked like metal plates. Then had some that said earthquake. But the ones that got me into bass was some fosgate power DVC back in 2000. First sub I ever bought and best I heard at that time

Not good, not going to post pictures at least until EMF & Sundown reply to emails. there is nothing wrong with posting pictures of the damage. its not like its sundown or emf fault or that you are blaming them. its was the carrier who is at fault here so its not like youre making SD and EMF look bad

chances are he hasnt dont any research.. i can say them same but then have audotistics and del rey audio.. if it wasnt for smd.com i wouldnt have known about them

i looked it up and says it has More basic crossover function from our other gear -- Class-A/B design the sax line is discontinued

not all.. i think the sax200.4 was AB but think they changed to class D

dude.. you can get all that information on the web.. go to sundown.com not trying to be a dick but really. you will find what you need if you search

But to answer your question. Both are ab

I dont think the 125.2 is made anymore. It's 150.2