Any way to manipulate the overal impedance(ohms)?

[whitedragon551 5,000+ posts]

Maybe he wants to run it at 2 ohms?

Then he should have bought the proper sub. If he already had the sub then he should have bought an amp that did power at what he needed.

Read above as to why that would be stupid.

Thank you.

I know. But he asked why you would want to in the first place, and I was giving him a possible scenario. Chances are his sub is dual 2 but his amp is only 2 ohm stable.

Scenario or not still no reason for it.

 

[bubbagumper6 5,000+ posts]

So how do transformers work?

Well I could explain but I have a feeling your being sarcastic...

 

[bubbagumper6 5,000+ posts]

Also why does everyone get so butthurt when someone disagrees with them? Is there no one on this board capable of having an intelligent discussion without involving emotion?

 

[ahole-ic]

Well I could explain but I have a feeling your being sarcastic...

You didn't see how it applied to your previous comment?

 

[bubbagumper6 5,000+ posts]

You didn't see how it applied to your previous comment?

I guess not, go ahead and explain (I'm being serious not condescending).

 

[ahole-ic]

I guess not, go ahead and explain (I'm being serious not condescending).

I would prefer you just get it. Start by asking yourself what a transformer is and how it works. Then you will see how what you said is patently false.

 

[Vossy 10+ year member]

Blake knows all /thread.

 

[bubbagumper6 5,000+ posts]

I would prefer you just get it. Start by asking yourself what a transformer is and how it works. Then you will see how what you said is patently false.

Transformers generally work by having the coil wound around a core which doesn't really apply to a subwoofer since the coil is wound around nothing...so again, I ask you to just explain to me where your coming from instead of giving me vague statements about how my statements are false.

 

[ahole-ic]

Transformers generally work by having the coil wound around a core which doesn't really apply to a subwoofer since the coil is wound around nothing...so again, I ask you to just explain to me where your coming from instead of giving me vague statements about how my statements are false.

So a pole piece isn't a core? Also, you didn't describe the main thing a transformer does. How does it "step"?

 

[Louisiana_CRX 5,000+ posts]

Hello everyone,I have to speakers that have a final impedance of either 1 or 4 ohms. I wanted to know if there's anyway to alter these impedance through the use of resistors or such...? Please let me know.

With my Veritas Accumatch you can make the sub see any impedance you want it too and even switch between various ohm loads....I may be selling it if intrested PM me....

 

[bubbagumper6 5,000+ posts]

So a pole piece isn't a core? Also, you didn't describe the main thing a transformer does. How does it "step"?

Well I forgot there was a metal part inside the coil (I've never built any woofers only wanged em) but my original statement of the coil generating a sinusoidal voltage was based on the other coil being energized (say by an amplifier) and causing the entire assembly to move through the magnetic field (thus generating a sinusoidal voltage on the other coil).

If you're just referring to the current being transferred through that core, how will there be any energy transfer without the assembly moving? If the assembly isn't moving then your either not supply power to main coil or your supplying it with DC, neither of which are relevant cases.

Also, I know you think your helping but your coming off kind of condescending. I don't mind being wrong but don't speak to me like a child.

 

[ahole-ic]

Well I forgot there was a metal part inside the coil (I've never built any woofers only wanged em) but my original statement of the coil generating a sinusoidal voltage was based on the other coil being energized (say by an amplifier) and causing the entire assembly to move through the magnetic field (thus generating a sinusoidal voltage on the other coil).
If you're just referring to the current being transferred through that core, how will there be any energy transfer without the assembly moving? If the assembly isn't moving then your either not supply power to main coil or your supplying it with DC, neither of which are relevant cases.

Also, I know you think your helping but your coming off kind of condescending. I don't mind being wrong but don't speak to me like a child.

.... not meaning to. I have a problem with this type of discussion where I sound like a dikk... but I'm really not trying to be. With that said, a stepping transformer is one coil wrapped inside of another coil with an iron core in the middle. (this simply improves magnetic strength as you know). The coil being powered will have a certain number of turns. The second coil has a certain number of turns. The number of turns is the ratio of the stepping. So if it's a "step up" transformer, the first coil will be powered let's say by 12v. If it's a 1:3 step up, the second coil will have 3x the turns as the first one it will have 36 volts vdc, with the current also reduced proportionally. NOTHING moves.

With that being said, the similarities to what we are talking about are many.

 

[audioholic 5,000+ posts]

"Shorting" the second coil (wiring pos and neg together) will simply change the circuit from open, to closed. If you (anyone) suggests this will alter how current created from moving the coil through the magnetic field is 'used', please let us know here.

IOW, shorting the second coil will not affect damping in any noticeable way. Tapping on the cone of a woofer, shorted or otherwise, proves absolutely nothing, and will sound exactly the same unless psychoacoustics play a role.

 

[duanebro 10+ year member]

Can anyone measure the specs of a driver? (my system is junk) If you can please measure a dvc speaker using one coil, shorting the other, and again with the coil open. Post your results here so we can put this to rest please.

 

[audioholic 5,000+ posts]

Can anyone measure the specs of a driver?

You are asking if anyone here has a Klippel machine, which I doubt. People like Sundownz has access to one Im sure, but they aren't something the average DIY'er here will have and can run the testing you request. Besides, it is unnecessary to discuss the topic at hand, simple physics answers most of the questions in this thread.