Korean compared to Brazilian amplifiers (Electrical theory stuff)

[Papermaker85 5,000+ posts]

I'll definitely get some pictures up sometime. I'm actually headed home now to begin tilling up an area for a garden and get away from a computer screen for abit. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
Amperage flowing across an impedance can be used to determine approximate power. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif The thing is all 3 (4 w/ phase angle) entities are interconnected *shrug* Assuming your load isn't 0 or infinity you will have both voltage and current.

but measure pricks with you later amigo. try not to die of boredom until I decide to bless you with my presence again //content.invisioncic.com/y282845/emoticons/suave.gif.858fc102f7646e678ee8af7e1fbc41d1.gif

OMG did I not just do the math?voltagexamperage is power

if you know power and resistance the squareroot of power*resistance will give you voltage

if you know power and resistance and want to find amperage you find the square root of power/impedance.

I'm not sure what your not understanding money..

furthermore I wrote the post

20kw on a two ohm driver has the same amperage as 5kw on the 1/2 driver.

which one will be louder? which one will have more? its a legitimate question and applies to the original post..

 

[The_Quiet_One 10+ year member]

bro not even close to original post unless OP is talking about stepping up to a more powerful brazilian with cost savings....

Roughly the argument is coming down to 5k at 2 ohm vs 5k at .5 ohm which is louder? At that point you have a ton of variables at play including amp topology in this case and how it responds to a reactive load.

 

[Papermaker85 5,000+ posts]

bro not even close to original post unless OP is talking about stepping up to a more powerful brazilian with cost savings....
Roughly the argument is coming down to 5k at 2 ohm vs 5k at .5 ohm which is louder? At that point you have a ton of variables at play including amp topology in this case and how it responds to a reactive load.

impedance doesn't mean anything. power input is power input.its the same as a motor. if this where true motors would be 1/2 ohm windings to get the maximum power..

to the latter part yes topology does affect drivers differently.

 

[Papermaker85 5,000+ posts]

Korean amplifiers achieve their total wattage output with a higher amperage output, hence why their internals are extremely beefy and thus the amps more costly. Conversely to that, Brazilian amplifiers significantly step-up output voltage to hit their wattage numbers, less current throughput reduces the need for beefy (heavy gauge and extremely stout) internals and thus reducing costs for the same total wattage. Here is where my question begins, 7kW =/= 7kW, what I mean by this, is a 7kW total output can be achieved with 200Volts and 35Amperes or 46Volts and 150Amperes.. Electromagnetic coils (The coils in the woofer) have a direct relation to magnetic flux saturation and amperage.. Meaning, more amperage, more magnetic flux lines, meaning a stronger magnetic field, thus leading to a more powerful excursion.. So, wouldn't Brazilian amplifiers technically fall short even at the same "wattage" level?

sorry to carry your thread out so much.

your going to find a bigger variance in the subwoofer and its "parameters" and how they change much more by the coils used in them than the difference in amps where as ne is high voltage vs low voltage..

what i mean is you should be more worried about designing the box and the cabin and choose the speakers that give the desired frequency response more so than which amp to choose

 

[adulbrich 5,000+ posts]

[quote name='wew lad']everytime @papermaker talks, i cant help but wat[/QUOTE]

^x100,000,000

 

[Eggroll]

 

[wew lad 5,000+ posts]

fixed

 

[ciaonzo 5,000+ posts]

If I had to choose between a current source amplifier or a voltage source amplifier, I would choose the current source amplifier. They just sound better for low frequency reproduction. Perhaps a voltage source amplifier for midrange and high frequency use, but that can depend on the drivers being used as well. Something like a planar, yeah voltage. Something like a wideband transducer with low sensitivity, yeah current.

The hotter it runs, the better it sounds. I know this subjective input isn't much help to the argument at hand. But because ears.

 

[Papermaker85 5,000+ posts]

If I had to choose between a current source amplifier or a voltage source amplifier, I would choose the current source amplifier. They just sound better for low frequency reproduction. Perhaps a voltage source amplifier for midrange and high frequency use, but that can depend on the drivers being used as well. Something like a planar, yeah voltage. Something like a wideband transducer with low sensitivity, yeah current.
The hotter it runs, the better it sounds. I know this subjective input isn't much help to the argument at hand. But because ears.

What about the amperage driven topologly makes you say this?

all of the great sounding amps have had 3 things in common

excellent noise floors and higher channel separation Via isolation of the power and switching supplies

lower ESR high ramp/fall time transistors and quatitly parts that have ideal materals/build low low leakage/and more natural sound.

 

[ciaonzo 5,000+ posts]

What about the amperage driven topologly makes you say this?all of the great sounding amps have had 3 things in common

excellent noise floors and higher channel separation Via isolation of the power and switching supplies

lower ESR high ramp/fall time transistors and quatitly parts that have ideal materals/build low low leakage/and more natural sound.

Honestly, I can't say. I'm not smart enough. But even when I start with optical head units and outboard precision DAC's with 110 S/N ratio and very high channel separation as you've indicated, there's still a difference to be heard when swapping out amplifiers that are much happier passing current than they are voltage (and vice versa). It's most evident on subwoofers that have huuuuuge strokes, that are not very sensitive, and are being asked to play flat well down into the teens (14-15Hz with full authority. I mean, slew rate and damping blah, blah, blah... all important, but you need solid current delivery capabilities for certain things. Subwoofery is one of them.
Again, this is 100% subjective and relates mostly to sound QUALITY and driver control, not how loud things are. I will gladly give up dB's for a smooth velvety warm passband.

 

[Papermaker85 5,000+ posts]

honestly the best amps ive heard the arc,lunar,zapco and the old us amps.. sounds like you have alot more experience than me..

suggestions?

 

[SounDrive Pro Seller]

I blew my DDZ's wired at 2 ohm, which with this theory would mean they were seeing much less current and wouldn't heat up as much as .5 with the same power. Oops

 

[adulbrich 5,000+ posts]

I blew my DDZ's wired at 2 ohm, which with this theory would mean they were seeing much less current and wouldn't heat up as much as .5 with the same power. Oops

Square wave on the HD "10k" //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[wew lad 5,000+ posts]

You can't get a square wave out of a Brazilian even if you tried

 

[adulbrich 5,000+ posts]

You can't get a square wave out of a Brazilian even if you tried

Can't tell if you're joking...

Even with the DSP, you can....