High current amplifiers

[UndercoverPunk 5,000+ posts]

I farted on another forum... come check it out...

 

[joetama 5,000+ posts]

I farted on another forum... come check it out...

OMG OMG OMG that's funny dude......

 

[hoss 5,000+ posts]

correct me if im wrong, but arent all the responses about what a high current amplifier incorrect... i think even yours are thyl...

HC amps create the power by putting out more current than normal amplifiers. power = current x voltage. for instance, whereas a regular amp might produce 1000w by creating 75V and 1.333amps of current. a HC amp could produce 1000w by creating 40V and 25 amps of current.

at least, that was my understanding of a high current amp

 

[thylantyr 10+ year member]

correct me if im wrong, but arent all the responses about what a high current amplifier incorrect... i think even yours are thyl...
HC amps create the power by putting out more current than normal amplifiers. power = current x voltage. for instance, whereas a regular amp might produce 1000w by creating 75V and 1.333amps of current. a HC amp could produce 1000w by creating 40V and 25 amps of current.

at least, that was my understanding of a high current amp

75V & 1.33 amp = ~100w not 1000w. Should be 13A //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

In this case, you get 1000w when the load is 5.8 ohms.

In the HC example, you need a 1.6 ohm load to get 1000w.

In both cases, the result is 1000w but have different load requirements

which doesn't make it a apples to apples comparison. To make

the comparison apples to apples, place that 5.8 ohm load on the HC amp, now

you get 6.8A, lower current than 13A from the HC {75V} example, and less watts

which means that the word HC is moot, a marketing term not engineering

term. It's not a bad term to use in the marketing departments, but it's

best to understand what it really means which is nothing.

Only the wattage desired into desired load is important.

These exercises are too stimulate thinking vs. word on the street says...

Here's another example. Suppose you are an alien from Mars where

the speaker loads are 80 ohms, not the typical 8 ohm. The amplifier design

will be different, draw less current. Later, you, the alien, come to Earth

to design 8 ohm load amplifiers, to you those could be marketed at HC

in relation to the Mars amp. But we don't call ordinary amps HC if they drive

8 ohms, but the alien would. /lol

Why would 1 ohm loads be called HC if the aliens on Jupiter drive 0.1 ohm loads

in their systems? To them it's low current. /lol

/comedy

 

[thylantyr 10+ year member]

The debate is pretty sweet there, cartman character brings spice to the topic.

So much comedy..............

y O U K NoW yOu LiKe It.

lol

 

[squeak9798 5,000+ posts]

correct me if im wrong, but arent all the responses about what a high current amplifier incorrect... i think even yours are thyl...
HC amps create the power by putting out more current than normal amplifiers. power = current x voltage. for instance, whereas a regular amp might produce 1000w by creating 75V and 1.333amps of current. a HC amp could produce 1000w by creating 40V and 25 amps of current.

at least, that was my understanding of a high current amp

A HC amplifier is (generally) nothing more than an amplifier that is capable of driving lower impedance loads since, by way of Ohm's Law, as the load the amplifier is driving decreases the current output increases and the voltage output decreases.

Take two amps; one makes 1000w @ 1ohm, the other makes 1000w @ 4ohm.

sqrt(1000*1) = 31.6V

1000/31.6 = 31.6A

So, the 1000w amp at 1ohm will have an output of 31.6V and 31.6A.

sqrt(1000*4) = 63.2V

1000/63.2 = 15.8A

The 1000w @ 4ohm amp will have 63.2V, but only 15.8A of current.

Same total power output. But, comparatively, the amplifier capable of 1000w @ 1ohm has "higher current" output. And that's simply how the physics work, not because it's special as some marketeers wish to make it sound.

But since the level at which an amplifier is to be considered "high current" in output is not defined...it's even more of a useless term.

 

[JimJ 5,000+ posts]

Here's another example. Suppose you are an alien from Mars wherethe speaker loads are 80 ohms, not the typical 8 ohm. The amplifier design

will be different, draw less current. Later, you, the alien, come to Earth

to design 8 ohm load amplifiers, to you those could be marketed at HC

in relation to the Mars amp. But we don't call ordinary amps HC if they drive

8 ohms, but the alien would. /lol

Why would 1 ohm loads be called HC if the aliens on Jupiter drive 0.1 ohm loads

in their systems? To them it's low current. /lol

I'm thinking of the characteristically high load impedances favored by OTL amps - not uncommon to see 16 ohms as a recommended load. Hell, I think Lowther sells more horns at 16 ohms than they do eight //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

But it goes back to what I was saying, about that forum and apparently thinking everyone has speakers that are 86dB/w @ 8 ohms //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[djman37 5,000+ posts]

they probably don't get quad .7 VC's either. Why in the WORLD would you need that!?

pics and tales of a 20.1 running @ .08 will be greeted like a 3-headed dog.

 

[zachzchw 5,000+ posts]

OMG OMG I did something to cause problems on another forum let me run over to this one and show off my e-penis and people will like me and then maybe one day it will be so big that I can have some self confidence.....

//content.invisioncic.com/y282845/emoticons/clap.gif.178cba2c538c68e720c727fcb024b19c.gif

What's it say about our forum when members take the time to organize "attacks" on other forums? //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

 

[thylantyr 10+ year member]

Same total power output. But, comparatively, the amplifier capable of 1000w @ 1ohm has "higher current" output. And that's simply how the physics work, not because it's special as some marketeers wish to make it sound.

 

But since the level at which an amplifier is to be considered "high current" in output is not defined...it's even more of a useless term.

Yes the term in only valid when there are two comparibles, but standalone

the term is useless. Overal, it's more useless than good, because we don't

care if the amplifier has a high current label if we know it's specs.