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Full Version: Got xmax? Looks like the Beyond Audio PSI does...
Mobile Electronics Australia > Mobile Electronics Discussion > SPL and Competition Discussion
the[K]id
During my wonderings across cyberspace, I saw the word PSI, and was rewarded with THIS!!!

Apparently a video of the first Beyond Audio PSI prototype doing its thing. Enjoy fellas.

[ November 21, 2002, 02:59: Message edited by: the[K]id ]
Splat_man
i downloaded.
i saw.
my jaw is now on the floor.
Androo
oh that is rather nasty isnt it
SomeFReaK
that is awesome, how much power are they putting into it???
Walkinshaw
Phil, those braham vidoes are insane arent they

they have a new one now, where a guy cracks the frame arround his passanger window from burping at 170.3db

[ November 21, 2002, 10:10: Message edited by: Walkinshaw ]
psi rocks

carn't wait for 2 gen of it meant to be around 100kgs

oh and the PSI in the vid can play music aswell apparently

[ November 21, 2002, 13:44: Message edited by: KraSE ]
Splat_man
hehehe krase is getting ideas now
the[K]id
From around the place:
Next PSI will be between 100-200 pounds, depending on basket I think. Don, you around?

Oh, and the 1st two are now in an SQ system. Mmmmmmm, bet it could get a flat RTA reading a mile away
Ear bleeder
Not trying to turn this into a DD post but you can't go past this, a 9515 hooked up AC main power, blows part of the basket and still keeps going
the links should work
and open ac test 9515
http://www.termpro.com/cgi-bin/ubb/ultimat...t=009074#000000

ftp://termpro:termpro@207.73.68.3/
if u look at the basket b4 it is connected it looks stuffed already. if it is the same vid as the one i got
the[K]id
Yeah, I think that bit was just taped on. If the basket couldn't survive a burp less than 10kw, I'd say it has issues...
Ear bleeder
I saw on termpro, that this sub in question was damaged in transit and the offending bit was originally broken

QUOTE
Yeah, I think that bit was just taped on. If the basket couldn't survive a burp less than 10kw, I'd say it has issues...
just remember they are using mains power
splbound
Bah... US mains power is less than ours... 120V AC.. Our 240V AC on the other hand... lets do some maths..

Power = Voltage^2/Resistance

So into 4 ohms..

Power = 240^2/4

That means a wopping 14,400 Watts from our electrical outlet. Playing a constant 50z or was it 60Hz tone... Test your subs on that!!!

At 2 ohms and 1 ohm respectively.. 28,800Watts and 57,600Watts... I doubt your house fuses will stay intact for these anyway.. even with the 4 ohm load.

Power = Current * Resistance

So depending on your house fuses are ratings you can figure out how much power you can get before it blows.

The US has a 120 volts on tap so that works out to be less at 3,600Watts at 4 ohms again at 50 or was it 60Hz.. I'll leave ther rest of the maths for you to work out if you are interested.
the[K]id
Problem is you can only draw about 10 amps from most sockets. So actually limited to less than 3kw...
Bassaholic
QUOTE
Originally posted by splbound:

Power = Current * Resistance
you mean Power = Current^2 * Resistance

Australian power is at 50hz, US power is at 60hz
Ear bleeder
QUOTE
Bah... US mains power is less than ours... 120V AC..  
righty then, have a look at about 39 seconds and what does the multimeter say, 218.4v??? only using 120v hey....

and it is doing 6000 watts, W=EI watts= voltage X amperage current
Thus being 218.4v x 28.8 amps = 6289.92 watts

US main are 60 Hz

If you have a look in the same link but look at the video called thump10_110ac, $20 sub on mains, 110 vac 60Hz 3025 watts
Androo
QUOTE
Originally posted by splbound:
I doubt your house fuses will stay intact for these anyway.. even with the 4 ohm load.
I like that, EVEN with a 4Ω load hahaha. Generally to connect things to mains, we use like 50kΩ
QUOTE
Originally posted by Androo:
quote:
Originally posted by splbound:
[b] I doubt your house fuses will stay intact for these anyway.. even with the 4 ohm load.
I like that, EVEN with a 4Ω load hahaha. Generally to connect things to mains, we use like 50kΩ[/b]
umm i use nails when doing tests

and heck I have 3 phase
toby123
the link didnt work for me ( 1,000,000,000,000 wrms one)

thanks

toby
BA5513
yes same the link on the termpro site didnt work for me
Splat_man
QUOTE
Originally posted by the[K]id:
Problem is you can only draw about 10 amps from most sockets.  So actually limited to less than 3kw...
hehe "most" sockets not all sockets are like that

kid knows what i'm talking about
splbound
QUOTE
Originally posted by Bassaholic:
quote:
Originally posted by splbound:
[b]
Power = Current * Resistance
you mean Power = Current^2 * Resistance

Australian power is at 50hz, US power is at 60hz[/b]

Whoopsie...

Yep P = I^2 * R

P=IV
V = I*R
Therefore P = I * I * R
hence P= I^2 * R

BUT something has slipped my mind... The circuit is AC so requires different calculations... I don't think in this situation it will be just Voltage * Current as the woofer has inductance... stuff it...I didn't really like electrical engineering anyway...

The point was.... Australian power outlets deliver more power depending on how many amps the fusebox will put up with.
the[K]id
QUOTE
Originally posted by Splat_man:
quote:
Originally posted by the[K]id:
[b]Problem is you can only draw about 10 amps from most sockets.  So actually limited to less than 3kw...
hehe "most" sockets not all sockets are like that

kid knows what i'm talking about[/b]

hehehe

BTW: Seems even 15Amp sockets dont like near short circuits. Me n krase discovered that one
QUOTE
Originally posted by the[K]id:
quote:
Originally posted by Splat_man:
[b]  
quote:
Originally posted by the[K]id:
[b]Problem is you can only draw about 10 amps from most sockets.  So actually limited to less than 3kw...
hehe "most" sockets not all sockets are like that

kid knows what i'm talking about[/b]

hehehe

BTW: Seems even 15Amp sockets dont like near short circuits. Me n krase discovered that one [/b]

Yer st00pid safty devices circuit breakers work too well

/me grabs 6mm rod
CHIEF
Hey KraSE, u ever had the panel van metered with the inhumans?
QUOTE
Originally posted by CHIEF:
Hey KraSE, u ever had the panel van metered with the inhumans?
we have had a single inhuman with 2 amps and 12.8v has hit 148 thatw as just chucked in at the last min. that in the sig is a upcomming project. one of many
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