Is He Bullsh!t!in?

[RAM_Designs 5,000+ posts]

exactly.

that

is

what

i meant.

Maybe you should explain your thoughts fully if you want people to follow them the way you intended...

 

[Pickler 10+ year member]

the amp to .25 ohm. thats 1/4 of 1 ohm.

r u sur?

 

[delvryboy 5,000+ posts]

Saying that the audio will run at 22V and the rest of the car at 12V is wrong. The voltage that the alt is running at is the voltage that the entire car's electronics will see...

It depends. I was only doing it for shows, so I would disconnect the alty from the main battery. Basically, the van would run off the under hood battery alone. I had a G31 under the hood, so run time was long. I actually forgot to reconnect after a show one night and made it 100 miles w/ the headlights on without a significant drain.

 

[RAM_Designs 5,000+ posts]

It depends. I was only doing it for shows, so I would disconnect the alty from the main battery. Basically, the van would run off the under hood battery alone. I had a G31 under the hood, so run time was long. I actually forgot to reconnect after a show one night and made it 100 miles w/ the headlights on without a significant drain.

I didn't think that we were talking about special instances where the alty would be disconnected from the main battery(although I good idea on your part). I figured we were talking about everyday daily driving situations.

 

[Goindef154 5,000+ posts]

Maybe 10 years ago they were...nowadays 99% use ported or 6th order BP boxes for spl...
I'm not saying there aren't some loud sealed cars, but 99%+ of the time a properly designed ported or BP box will trump a sealed box with ease...

I've seen a few, the most notably being Hoe Problems. I'll see if I can find some others.

 

[Ed Lester 10+ year member]

some people are so funny.

22v DC would fry every automotive amp out on the market.

 

[delvryboy 5,000+ posts]

doubt it. I've seen the 20.1's take 22V at Meca finals '04.....

 

[lilmaniac2 5,000+ posts]

doubt it. I've seen the 20.1's take 22V at Meca finals '04.....

lol yup, biggest baddest cheater amps ever lol. I think nick shouldve called them the 150.1 killers

to the OP again, you can separate the charge a number of ways. A step down transformer, a triple post battery, or two settings.

 

[lilmaniac2 5,000+ posts]

ps in my old crx for burps i would up the alt to 16v and burp it, it gained me almost an entire db, and had no detremental effects to the car, other than blowing the dash bulbs

 

[PaulD 10+ year member]

I know there are ways of getting around it, but we were NOT talking about all the little exceptions ...... the OP stated that the autozone guy wante to bump up the cars regulalor to 22 V. I stands by my statement, I would love to see what running a car at 22V regulation would do to the rest of cars electronics.

 

[Ed Lester 10+ year member]

doubt it. I've seen the 20.1's take 22V at Meca finals '04.....

That amp must have had a customized power supply.

Most components used in the power supply have voltage limits. Caps are important here. In switch mode power supplies the voltage inside the amp is changed to AC and then raised very high. The DC input voltage could drive this voltage higher if the DC was raised and could raise it beyond the designed limits.

The basic automotive environment can have a voltage range of 10.5 to 16.8 volts. So amps are designed to work within this range. For protection purposes the range is always a little higher and a little lower. So some amps can have a range of up to 9.5v to 19v.

If you create an amp with a greater range or set the range higher, it will result in a less consistant and less efficient amp. In other words, if an amp is set to work at 22v, it could blow with under voltage and under voltage on an amp like that could be 13v.

Also, even 16v batteries will have their cells cooked with anything charging that high.

So a 22v setup at MECA Finals seems highly unlikely, They would have to have made custom batteries and would have to have modified the power supply of their amps. An adjustable voltage regulator for the alternator will easily do this though.

MECA does have an unlimited voltage rule in some higher classes, most other orgs limit voltage to 18v.

I could be wrong, it just seems unlikely to me.

 

[Ed Lester 10+ year member]

I was up a Auto advance and im bumping my type arrrrhhhhh's then this older guy comes up to me like man i can have you stuff thumpin to where anyone that pulls up next to you have their ears thumping.

He said something about he can get me thumping like so with

2 MTX 12's 1000w RMS a piece.

250amp alternator

something like this voltage thingy so you can turn the knob up to 22volts.

and he said he onlu fux with a class d amps that can do 22v. He said he can get 3000w RMS from 1000w or 1500w mtx thunder class d 22v amp.

O and by the way he said he runs/wires the amp to .25 ohm. thats 1/4 of 1 ohm.

Is this guy full of it or what?

Also, any 12" MTX would be just OK, nothing too great even from 9500s. Type Rs can be just as good.

And you can only run the amp at .25 ohm of the subs coil combo can do it. So with 2 12s you would need dual 1 ohm coils to run all coils in parallel to a single .25 ohm load. MTX doesnt make an amp that can run that reliably. And they dont make dual 1 ohm subs.

Also, it would make much better sense to keep your 12v electrical system and get bigger amps if you wanted more power, it will cost less anyway and it would actually run reliably.

Next time you see that guy just ignore him.

 

[delvryboy 5,000+ posts]

That amp must have had a customized power supply.Most components used in the power supply have voltage limits. Caps are important here. In switch mode power supplies the voltage inside the amp is changed to AC and then raised very high. The DC input voltage could drive this voltage higher if the DC was raised and could raise it beyond the designed limits.

The basic automotive environment can have a voltage range of 10.5 to 16.8 volts. So amps are designed to work within this range. For protection purposes the range is always a little higher and a little lower. So some amps can have a range of up to 9.5v to 19v.

If you create an amp with a greater range or set the range higher, it will result in a less consistant and less efficient amp. In other words, if an amp is set to work at 22v, it could blow with under voltage and under voltage on an amp like that could be 13v.

Also, even 16v batteries will have their cells cooked with anything charging that high.

So a 22v setup at MECA Finals seems highly unlikely, They would have to have made custom batteries and would have to have modified the power supply of their amps. An adjustable voltage regulator for the alternator will easily do this though.

MECA does have an unlimited voltage rule in some higher classes, most other orgs limit voltage to 18v.

I could be wrong, it just seems unlikely to me.

In 2004 there wasn't a voltage limit in any classes. I'm not saying it's not dangerous, but it can be done for short periods of time on some amps. The regulator was set at 22v and even Nick couldn't believe they didn't blow smoke.

In 2006, I ran 20.7v through 3 zx2500's at finals. I'm not sure what the drop was, but it gained me .6db from setting the regulator at 18v. I was willing to take the risk of blown everything.

 

[SethPhillips 5,000+ posts]

op you are retarded for even thinking that is possible...

 

[MikeyB 5,000+ posts]

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