adulbich

[fatboytyler]

You all are talking like the Brazilians are more efficient enough to run that much more power than Korean. Yes they are more efficient but not that much more. It still takes power to make power. They are not miracle amps.

It's always give and take in this hobby. Nothing is free

Well, when you run at a high enough internal voltage, the amperage draw is reduced significantly. So according to physics they can be that much more efficient. I've seen people local run high power Brazilians using half the electrical I would run for their Korean counterpart and not have a single voltage issue.

 

[LosIsATool 5,000+ posts]

Well, when you run at a high enough internal voltage, the amperage draw is reduced significantly. So according to physics they can be that much more efficient. I've seen people local run high power Brazilians using half the electrical I would run for their Korean counterpart and not have a single voltage issue.

Voltage and amperage run together.

 

[los33 10+ year member]

By most competitions you mean MWSPL which is quite small and maybe partially in DB drag? FYI the DSP series aren't banned from Db drag as they clamp just fine on the magnum. Not sure on the HD10k but I would assume its in the same boat. MECA has already said they do not want to be unfair to Brazilians as a lot of their competitors use them.

Yes mwspl is the main one, I assume they were exempting Brazilian amps for extreme classes.

As far as i know the clamped classes are the ones currently being limited.

*****FOR IMMEDIATE RELEASE*****

From this point forward USACI will be using the Termlab Magnum Clamp Meter at all events including 2015 USACI WORLD FINALS for all clamped power classes. We are aware of issues with Brazilian manufactured amplifiers not reading properly on the Magnum Clamp Meter. At this time we cannot allow any Brazilian manufactured amplifiers in ONLY the clamped power classes until further notice. This includes (but not limited to) Soundigital, Taramps and Stetsom amplifiers. USACI will be testing and researching for solutions to this problem in the near future to allow for these types of amplifiers. We apologize for any inconvenience this may cause our competitors, retailers and manufactures.

These amplifiers will still be allowed in all divisions except the clamped division.

** USACI reserves the right to review and or remove any amplifier from competition for the clamped division if we feel it has an unfair advantage or the amplifier will not read properly on the clamp meter. **

 

[fatboytyler]

Voltage and amperage run together.

W = A * V

Therefore 1,000 watts output at say 30 volts is Much more efficient than that of it outputting at 10 volt. I'm not sure the exact internal voltages of Brazilians versus Koreans, but you get the picture. Can't fight physics bro.

 

[hispls 5,000+ posts]

MWSPL banned them as they "couldn't be clamped by the termlab magnum" and db drag talked about doing the same next season. They claim noise from the amp throws off the clamp but from what I've seen all it takes is proper placement of the clamp probe and it works fine.

Sounds to me like some half-**** regional org can't afford proper tools to measure current and voltage and there is a problem with the "new" termlab.

Yes mwspl is the main one, I assume they were exempting Brazilian amps for extreme classes.As far as i know the clamped classes are the ones currently being limited.

So your regional competition org can't figure out how to measure current and voltage so they "ban" Brazilian amps. That's laughable and certainly doesn't reflect the real international SPL organizations.

 

[hispls 5,000+ posts]

W = A * V
Therefore 1,000 watts output at say 30 volts is Much more efficient than that of it outputting at 10 volt. I'm not sure the exact internal voltages of Brazilians versus Koreans, but you get the picture. Can't fight physics bro.

The big issue being the current creates heat so all things being equal high voltage is superior. That said at some point high voltage becomes a problem with the coils as it can eventually jump through the shellac and burn holes in them.

 

[fatboytyler]

The big issue being the current creates heat so all things being equal high voltage is superior. That said at some point high voltage becomes a problem with the coils as it can eventually jump through the shellac and burn holes in them.

I never said they were better, just more efficient. I know I plan on setting the gains when I go BrazilIan very conservatively to help avoid any potential problems such as that.

EDIT: As for heat, even with power lost due to heat, it's still more efficient in the end. Those components are designed to handle higher voltage, thus having a higher thermal rating. Works much like power supplies in PCs

 

[Massive spl]

It take power to make power. Tfade even said they arnt Magic. Korean all day, every day, even on a holiday

 

[LosIsATool 5,000+ posts]

I never said they were better, just more efficient. I know I plan on setting the gains when I go BrazilIan very conservatively to help avoid any potential problems such as that.
EDIT: As for heat, even with power lost due to heat, it's still more efficient in the end. Those components are designed to handle higher voltage, thus having a higher thermal rating. Works much like power supplies in PCs

It still takes power to make power, again, nothing in this hobby is free. As for testing, yes they are more efficient but we are only talking a few percent at the lowest load. Speaking for Korean amps not Chinese stuff like Rockford's hyped 50% power amps.

Its your money you can do what you want. The track record turned me away, I don't like pissing money on something that's proven time and time again to fail, to much of a gamble to be the select few that have no issues.

 

[MrFoca]

I remember one show here alan Dante was DQ because they considered his banda amp a signal generator, first time I'd seen a Brazil amp back in like 06-07 he did a 180 at the kick in his Volvo. That was DB Drag.

 

[fatboytyler]

It still takes power to make power, again, nothing in this hobby is free. As for testing, yes they are more efficient but we are only talking a few percent at the lowest load. Speaking for Korean amps not Chinese stuff like Rockford's hyped 50% power amps.
Its your money you can do what you want. The track record turned me away, I don't like pissing money on something that's proven time and time again to fail, to much of a gamble to be the select few that have no issues.

But when you only have to have half the batteries, that is a nice cost saver. I also don't see how it's just a few percent more efficient when they literally take half the electrical to run properly? Oh yea that makes sense. As for track record, all the people who actually know what they're doing how long they last... bet it's better than that regular user track record.

 

[adulbrich 5,000+ posts]

But when you only have to have half the batteries, that is a nice cost saver. I also don't see how it's just a few percent more efficient when they literally take half the electrical to run properly? Oh yea that makes sense. As for track record, all the people who actually know what they're doing how long they last... bet it's better than that regular user track record.

According to hispls, I need a ton more batteries, so apparently that statement is false

 

[LosIsATool 5,000+ posts]

But when you only have to have half the batteries, that is a nice cost saver. I also don't see how it's just a few percent more efficient when they literally take half the electrical to run properly? Oh yea that makes sense. As for track record, all the people who actually know what they're doing how long they last... bet it's better than that regular user track record.

Lol it won't take half the batteries. They are not 100% vs 75%.

 

[Massive spl]

They don't take half the electrical to run safely... The people that say that went from a 3.5k Korean amp up to a 7k Brazilian amp... So yes the 7k amp will have an easier time doing as much power as the 3.5 Korean amp..

 

[wew lad 5,000+ posts]

Not to say "I told you so" but I told you a couple times that these Brazilian amps liked higher source signal. I'd suggest that relying on your head unit isn't going to do you any favors so buy yourself a pre-amp.
From my experience even with some Sundown amps when I used to run them pre-amp + less gain on the amp gained on the meter.

how much pre out voltage are we talking? I have 2v pre outs and it seemed fine but who knows. i figured gain was just gain, not some magic way of getting more clean power