Axiom Home Page Forums General Discussion Home Theater VP160 Concept Discussion

Yes, your square room sucks.

All better now?

If the amp is rated at 1000 watts RMS then it should, if the peak power output is 1000 watts then no it shouldn't. JC told us that they run their M80's at 800 watts for several hours on end to 'tourture test' them to make sure they don't break. I would be interested in knowing which amp is used in this tourture test?

Ahhh, so he was able to squeeze out the whole 1 watt eh?

J/K


Excellent information Alan, exactly what I was looking for. You have indeed cleared up many unanswered questions for me personally with that explanation, I thank you for that. And in fact the reasons you give actually give my old beliefs in subwoofer box design differences credibility. If you go back and read the beliefs I 'used to hold', I said we car audio junkies prefered ported box's because they ultimately put out more bass. I didn't know why, but with your definition it seems this is because they are more sensitive. With less power we were able to achieve greater amounts of air moved as we made use of the 'back wave energy'.

But just as Ian explained to you, along with lower bass notes, we got a lot of port noise that interfered with the music. Which is why sealed subs were considered 'clean' and or 'tight', because there was no port noise to contend with.

Anyone that wasn't into car audio won't understand any of this. You see at least back in the 80 and early 90's you couldn't find 'all-in-one' car audio subwoofers. You bought a woofer (usually a JL Audio or Kicker), an amp (most people bought amps that made 500 to 1000 watts), and then you either bought (or made) a sealed box or a ported box to put it in. We certainly weren't engineer's, we were just kids who liked to give our back seat passengers back massages while cruising the strip. And with the three ingredients listed above, those of us who liked 'clean' bass used a sealed box. Those of us who wanted the most bass you could possibly create used a ported box. It was as simple as that.

And I'm assuming a lot of people who come on here who say they prefer the 'clean' sound of a sealed box is from that very same school of audio education that I came from. Given a generic driver and a generic power supply you're going to get more bass out of a ported box, and a cleaner sound from a sealed box.

Since those days hundreds of subwoofer companies have refined subwoofer box's remarkably. They now include a built in amp, and drivers that are either very sensitive or not so sensitive to accomodate the box design being used. This is why so many people on here tell those people who come on here exclaiming they prefer one design over the other, "there is no difference". Because with today's subwoofers there isn't.

But perhaps, just perhaps this information can help bridge the two schools of thought so that they can understand where each is coming from. Thank you for chimming in on the subject Alan!

From my understanding thats not how the amp ratings work. I have started a separate thread about amps and power here to respond to your last post.

Pretty interesting, and quite frankly shooking information indeed. If amps are only designed to produce 1/8th of their rated power for a continuous amount of time, then I'm very curious to know what sort of amp they hooked up to their M80's during the Axiom torture test chamber excersize, during which they ran them with a full 700 watts (or was it 800?) for hours on end to make sure they wouldn't break.

It couldn't have been their own A1400-2, as the most it could put out at a continuous rate would be about 175 watts.

the diameter of the pipe would be the guage of the wire there for the resistance of the wire used.. the current would be the amount of water flowing past a certian point. voltage would be the pressure that the water tower had to offer.


if you have a lot of pressure, with low resistance you have a lot of flow...



nothing like describing electrical engineering principles over the internet on a HT forum??!!!???!!!

That analogy works well, I'll steal it.

A HT forum is a good place for EE. Having a little practical knowledge of how electric works helps remove the "magic", and allows consumers to avoid snake oil.

I've got some skunk oil I'd like to sell.

hey to sell skunk oil effectively you

1) need to make the package REALLY pretty
2) sell in boutique stores, or have a special area made in a retail chain...
3) charge a shit load of money.....


now go forth and make lots of money!!!

oh, one thing i did notice neon, no one has used any equations to try to explain anything......

i though about a few, but figured i be better off sticking with the water....