Dome tweeter research

[roland bios]

Please go all the way! Build the uber version!

I am very curious about the technologies you are using to get these wonder spec's. I am sure there will be an great interest in this tweeter. Don't take the djinn to serious, what else would you wish from a tweeter: linear, high efficiency, fast...

What was the qeustion again?

[Feyz]

The T/S params given yield a 5% efficiency, so almost all energy input into the driver turns into heat. According to my rusty specific heat, joule knowledge, 1000Watts in a second will vaporize a 0.0558g copper coil, unless the heat is wicked away from it, may be with a water cooler. That's a lot of heat to be wicked away. For a RMS 1000W continous power handling, with the 5% efficiency, it could be used as a 1KW room heater, but with a heating coil of 0.0558 grams???

[Audiophilenoob]

Originally posted by Feyz
The T/S params given yield a 5% efficiency, so almost all energy input into the driver turns into heat. According to my rusty specific heat, joule knowledge, 1000Watts in a second will vaporize a 0.0558g copper coil, unless the heat is wicked away from it, may be with a water cooler. That's a lot of heat to be wicked away. For a RMS 1000W continous power handling, with the 5% efficiency, it could be used as a 1KW room heater, but with a heating coil of 0.0558 grams???

what's so great about this, is that it foils your mind to try and understand it, so the idea will be impossible for someone to think of on their own not even by tearing it apart and looking at it could you find out the secret behind it

no it's around 800w-1000w continous

beyond just the normal former "wicking" away this heat other things are used... things I can't go into

you need to remember that you can't just jump to the conclusion you just did... that the weight of the copper dictates heat as the wire is a gauge and this needs to be accounted for... also you need to understand that the heat is not produced via the total efficency but by the wire's thermal properties... otherwise those 75db/w speakers would burn up with <1w...

shhhhh maybe one day I will reveal the secret

for now we're doing the 200W version anyway... however anyone can special order the 1000W version

I dunno how long we'll let the DIY community buy it... hopefully forever... but prices need to go up once speaker companies start using it... otherwise if audiophiles aren't told it's expensive... will they buy it?

/hehehehe

alright well now that I know the end to work towards... I'll go ahead and get a working prototype made... specific prices and customizability options will follow... likely though the actual speaker will only be available to buy for less than Thiel prices for a month or two... then we'll see if I'm forced to pull it from DIY in the interest of companies


cheers

[BAM]

You should license your technology to Eminence, who seems to have trouble pushing a 4" VC beyond 800w power handling.

[Audiophilenoob]

Originally posted by BAM
You should license your technology to Eminence, who seems to have trouble pushing a 4" VC beyond 800w power handling.

as it stands dylan and I have no desire to lease it to any other buildhouses...

[BAM]

P=(I^2)(R) no matter what day of the week it is, no matter what year it is. That heat is going somewhere.

[Audiophilenoob]

Originally posted by BAM
P=(I^2)(R) no matter what day of the week it is, no matter what year it is. That heat is going somewhere.

yup... it sure does.... it's just not as simple as he stated...

but a lot of that can be shown to be self cooling as it's a moving coil and it does have a former

not to mention the point is moot if you understood all the aspects of the design...

[rcavictim]

I didn't check to see the date when this thread was started. Must have been April 1. I guess Audiophilenoob is using the same wattspeak as computer speaker manufacturers do. I am looking at my 120 watt amplified computer speakers on the shelf above my computer, and the 3 watt wall wart that powers them. I have become convinced that when the computer speaker manufacturer claim 120 watts PMPO they mean Peak Milliwatts Power Output. So OK I actually have 1.2 watts RMS.

[AJinFLA]

If anyone is capable of this feat of engineering, it would be Feandil.
I anxiously await the results.

Cheers,

AJ

p.s. 99db sen. and 1000w power handling. The car audio guys must be drooling. Might have something to go with their 150db bass. Where you would listen to this from, I'm not exactly sure.

[ShinOBIWAN]

Originally posted by AJinFLA
If anyone is capable of this feat of engineering, it would be Feandil.
I anxiously await the results.

Cheers,

AJ

p.s. 99db sen. and 1000w power handling. The car audio guys must be drooling. Might have something to go with their 150db bass. Where you would listen to this from, I'm not exactly sure.

Yes I agree, out of all the multi-million dollar driver houses vs. Feandil and his mate... well its a no brainer

Seriously though, if you do it and its proven, I'll buy a couple.