what do you think about these amp guts?

[SourDeez 10+ year member]

i thought it goes like this 14.4 volts x 90 amps = 12961296 x .7 (70% efficient amp) = 907.2 watts

but i may be wrong. i don't claim to be an electronics engineer like most google kids. I would assume that the design of the power rail n stuff would effect that. Like Rockfords power boost rail line, i would assume has a different output than the fuse suggests.

I just go by CEA ratings and keep it simple.

It's basic stuff that you learn in highschool. Volts x Amps = watts

Anyways, I was referring to the 80 amp fuse of the first amp.

I was just stating my opinion it does 1200 at 14.4 so shave off at least 100 because you will not be at that voltage in most cases. I go by fuse on cheaper amps because I don't trust them to rate well at all. I know fuse ratings don't mean very much but they have a decent amount of meaning. The mmats 3000.1 puts out 3k and only has a 100amp fuse.

Fuse rating can be inflated. That's the only reason people say it doesn't matter. But most of the time they are fused properly..

And yea people obviously you can't tell where the builder of the amp buys his coffee by looking at the fuse rating but it is a huge indicator of what class the amp lands in

 

[murph 10+ year member]

It's basic stuff that you learn in highschool. Volts x Amps = watts
Anyways, I was referring to the 80 amp fuse of the first amp.

Fuse rating can be inflated. That's the only reason people say it doesn't matter. But most of the time they are fused properly..

And yea people obviously you can't tell where the builder of the amp buys his coffee by looking at the fuse rating but it is a huge indicator of what class the amp lands in

either way my opinion stands and if there is a large price increase for the 1200 I would just snag the other amp. I still bet that the 900 watt amp will get hot as **** but they look stout.

 

[SourDeez 10+ year member]

either way my opinion stands and if there is a large price increase for the 1200 I would just snag the other amp. I still bet that the 900 watt amp will get hot as **** but they look stout.

I was basically agreeing with ya

 

[Reimers 10+ year member]

the price difference is minimal.

the brand is a norwegian brand called lib

they also have a 5kw and 7kw amp

in my eyes it looks like a zenon board

here is the 5kw

and here is the 7kw

 

[TheUnderFighter 10+ year member]

Glad to see they finally got a fan on the 7kW one They look good enough, I don't know **** about amp guts though. How cheap is cheap for the 900w one?

 

[Reimers 10+ year member]

cheap for us here in norway. it is about 380 us dollars

but remember my 500w cerwin vega amp was about 666 us dollars

car audio is 4x as expencive here compared to in the us

 

[TheUnderFighter 10+ year member]

Hey if it's a solid amp, that's not a bad price at all. Won't know until you try it though. It'd be interesting to get a clamp and o-scope test for it.

 

[audiobaun 5,000+ posts]

the price difference is minimal. the brand is a norwegian brand called lib

they also have a 5kw and 7kw amp

in my eyes it looks like a zenon board

here is the 5kw

and here is the 7kw

WOW! Those are Fantastic Looking boards man!Several Huge Caps, and Nice coils, and that feed is Pretty good sized.How much for those in US $??Ill bet shipping will Kill a man:

 

[slim2fattycake 10+ year member]

Unless it is very efficient it looks like it is gonna get quite steamy. But looks alright.

I'm guessing you know a lot about heat transfer, right?

Tell me whats wrong then. If you attempt to have 10,000 watts of current through an amp thats fused at 80 amps, it's gonna blow..whether you do it on purpous or mistake (short)

heard of MECA, brah?

 

[VWBobby 10+ year member]

It's basic stuff that you learn in highschool. Volts x Amps = watts
Anyways, I was referring to the 80 amp fuse of the first amp.

Actual real life is not something you can predict with a formula. Amps have a certain "headroom" built into them, in the form of capacitance -depending on the design. An amp with a good bank of capacitors can supply a more steady burst of current for a longer amount of time - without having to draw more current from its source (12V). Forget what you read on this forum about capacitors, most people are idiots. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

Audio amps, by their very nature take a low voltage high current supply, and turn it into a medium voltage, relatively low current AC output. It doesn't represent what it is being fed in the least bit...... Judging a power supply by what fuses it may have on the DC side does not equate to what it will put out on the speaker (AC) side. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif This is why a lot of cheater amps can have fuse ratings much lower than the monster ratings we see on amps today...

 

[05fronty 5,000+ posts]

those bigger amps look nice

 

[SourDeez 10+ year member]

heard of MECA, brah?

eh..heard of? yeah..... so are you telling me there is people running 10kwrms fused at 80 amps? Or whats going on..'cause if thats the case then I was totally wrong

 

[JimJ 5,000+ posts]

eh..heard of? yeah..... so are you telling me there is people running 10kwrms fused at 80 amps? Or whats going on..'cause if thats the case then I was totally wrong

MECA's a special case, they set their classes by fuse size. So of course, the competition becomes who can stretch the fuse ratings to the absolute limits //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif Sort of like USACi and "2 watt" amplifiers that do 10kW //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

Not exactly a situation for the non-competitive install...

 

[SPLaudio 5,000+ posts]

people need to learn it take 2x amperage for 3+ sec to blow a fuse. so if you have 80amps of fusing you can pull 120amp thru it all day everyday without failure...

 

[SikFly 10+ year member]

then how come my 10 amp fuse to my cigarette plug blows whenever i attach a device that uses more than 10 amps? i got a 15 amp converter and it blows pretty **** quickly when i plug it in. i'm afraid to put in a larger fuse cause i dunno much about that stuff.