to hifonics nay-sayers

[CL1CKCLACK 5,000+ posts]

Heat from what ?
Low voltage = High Current = Heat

A bad ground at the amp is the only instance which could cause an issue with heat....

it is called clipping dude...
you have to be kidding right?

you bring up OHM's law and don't even understand it yourself?

lmaoo, i was thinking this exactly. the idiot who brings up ohms law, but doesnt understand it himself

 

[Haunz 10+ year member]

lower voltage requires higher amperage ( to make the same output ) which creates higher heat and exceeds the internal components thermal limits...
some direct quotes from people with degrees in the field...

Current=Power/Voltage

As voltage goes down, current has to go up to maintain the power. You will get to the point where the input section of the power supply can't keep up and **POOF** out comes the magic smoke

Power = Voltage * Current

Chris is correct, To maintain the voltage rails on the output of the power supply section, the input power must stay constant with the output. If the input voltage goes up, less current is needed, and if the voltage drops, the current goes up

If an amp is designed such that it does not shut off when too much current is being drawn by the power supply, that is just poor design. There are capacitors on the output rails of the power supply that supply current peaks to the amplifier section for high transients in music. If there is not enough capacitance and you keep running the amp beyond it's rated power and it doesn't shut down, somethings gotta give

and there is always the bible...

Basic Car Audio Electronics

I have a degree 'in the field' and understand ohms law quite well, thank you.

The only instance where an amp draws more current when the voltage drops is when the power supply is regulated to do so, and the duty cycle of the power supply increases... voltage drop beyond the point where the power supply is operating at a 100% duty cycle will not cause the amp to draw more current... likewise an unregulated power supply (most amps) will not draw more current with less voltage...

That notion that you can somehow get more current flow with less voltage is completely counter intuitive to ohms law....

An amp with an unregulated power supply puts out less power as voltage drops... the power output does not stay the same...

 

[dbeez 5,000+ posts]

all i will add to this is even db-r himself has said previously low voltage does not kill amps.

 

[SicAudio 5,000+ posts]

never said you could "get" more current

I said it "takes" more current at a lower voltage for the same output, which creates more heat...

you gonna call all the electrical engineers in the world wrong? you gonna tell the engineers that designed the amplifiers wrong?

you ever see a fuse holder melt? more than just a bad ground can create the issue...

get a clue dude...

and remind me not to use the company that you are "in the field" for....

 

[Vossy 10+ year member]

Isn't BRZ Cea approved though

 

[SicAudio 5,000+ posts]

all i will add to this is even db-r himself has said previously low voltage does not kill amps.

one 1 the quotes was from Chris... go look //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

and low voltage doesn't kill anything.... the heat does..

 

[SicAudio 5,000+ posts]

Isn't BRZ Cea approved though

all Maxxsonics has been CEA since 2006 or earlier

but CEA is all BS anyway...

it means nothing in all reality... they test at 12 and 14 volts for amps at 4 ohms only...

 

[PPI_GUY 10+ year member]

I know that on the very first Orion HCCA series (this was back in the day), a drop in voltage = poof!

The second series seemed to be alittle more forgiving with nowhere near the fail rate. I had a friend who competed with all Orion gear and they swapped his two HCCA 225's out FREE when the 2nd Gen went into production.

Now, back to the MB Quart/Maxxsonics argument...

 

[Vossy 10+ year member]

all Maxxsonics has been CEA since 2006 or earlier
but CEA is all BS anyway...

it means nothing in all reality... they test at 12 and 14 volts for amps at 4 ohms only...

New crunch amps are CEA approved?

Why'd they release the "new" cea approve video on the BRZ series

They also cost 1/2 the price more too

:hmm:

 

[SicAudio 5,000+ posts]

they never advertised it before because no one seemed to care. then rumors started that they won't do anywhere close to rated so they proved it and released the info

you gotta understand the big picture...

no Major company cares about people on a forum and their opinions...

they care about sales and profit margins...

other Major companies use the CEA rating as a "consumer" safety net and charged more for it when they did and in the retail market their sales are doing great, so why wouldn't Maxx do the same?

 

[hazardous0388 10+ year member]

actually the former brutus amps the past few years were NOT CEA rated. the BRZ line is CEA rated however.

 

[SicAudio 5,000+ posts]

if you look on the CEA website it shows Maxxsonics as a certified CEA member and i know they were there in 2008 the last time it was debated cuz I posted this same link then which shows them listed...

CEA: CEA-2006-A, Mobile Amplifier Power - CEA-2006-A, Mobile Amplifier Power

either way it is all marketing hype nothing more...

 

[hazardous0388 10+ year member]

its not really a marketing hype as MANY people on here say. you and i are not against each other on this hifonics bashing but i do disagree with that statement.

i think it does provide the semi-educated car audio buyer a general guideline when purchasing new equipment. I believe it is a good standard to use in an industry where knowledge is key to at least be able to say "hey i at least do this much power according to this test compared to this other brand that does this".

 

[SicAudio 5,000+ posts]

good point

I would have to agree

I say Hype because to the knowledgeable person it comes across that way usually

for the less educated it is a great way to determine that what they buy does what it says just as you pointed out, and all similar items in its marketing venue are held to those same standards

 

[hazardous0388 10+ year member]

exactly. that is really the MAIN reason i think it is a good program.