Sh*t, even hybrid cars have something they call boost caps in them. This is done because it takes too many batteries to provide peak current demands. Besides filters, that is what capacitors are for!

Matt

 

sure it takes more batteries, but when your running that much power, you'd need even more capacitors than you would batteries....you cant tell me capacitors are better than a couple Kinetic HC2400's, or PowerMaster D3100 Batteries, becuase they're not. if you want to believe they are, you have the right to do so, but i wont run a capacitor over a battery designed for high powered car audio systems.

look at the SMALLEST battery kinetic makes. says that single battery is stronger than a 100 farad capacitor.

/discussion.

 

If the answer is no, then it's time to do some reading.

I read thier entire website. Yet is says NOTHING about what makes thier batteries so special other than they have a slightly higher open loop voltage.

I also note that the 2400 you keep talking about weighs 69 lbs.

So, the battery is "stronger" than a 1 farad cap? So what? How many farads (of the right kind of farads) weighs 69 lbs? How many farads can you put in the same physical volume? What I'd call that phrase is pure marketing BS.

Stop getting all your information from vendor websites, and start learning the principles of operation of the systems you want to build. One makes good systems, the other smokes credit cards....

MAtt

 

He's got some good points here

 

[SIZE=1]"All Kinetik power cells feature a high current absorptive glass mat design with an ultra low ESR for super effecient and quick discharge and recharge. "

FWIW, this is the same design that's in the Optima batteries. The idea is by using windings of glass mats you can hold a fixed gap between the posative and negative electrodes, so that you have more surface area and can sustain more peak current. But it's still based on SLA (sealed lead acid) technology, and as such has both the strengths and weaknesses of the that particular chemistry.

Really, it's a mild tweak on a very old technology. They do a bit to pack a bit more in the same sized box than others do to increase the energy density by a few percent.

Do some reading on boost capacitors, that go by the brand name "Ultracapacitor" by Maxwell Technologies if you want to see something in non-chemical high energy density storage technology.

What the Kinetic site is trying to do is compare tweaked lead acid technology to those large metal cans (some of the cheapest relativly high capacity capacitors there are) that you used to see all over the place. This is called an electrolytic capacitor and is cheap, easy to get in higher capacities, and relatively slow compared to other capacitor designs. This is a classic straw man argument, the mainstay of advertising and marketing.

Matt
[/SIZE]

 

ok, i will look into those ultra capacitors. ive never heard of those, so im not going to say anything yet. ill PM you with a few questions

 

Good Grass Hopper...we are learning I do not know as much as either of you, but it sounds like Dr.O is right. He has never steered me wrong with advise I would definitely trust him. It will most likely save you money in the end.

Can't wait for another update...but do it right

 

this is gonna be a crazy box. this is what ive measured/drawn up so far. ill continue to add onto the sketch-up as i go, it figures out what all the angles are as well. i ran out of card board. only reason im doing this is to get as much airspace as possible.

 

Nice What are you using to make your drawings? CAD?

If you need cardboard, check out your local refrigerator centers...they are always willing to give away old Fridge boxes

 

good idea

i use Google Sketch-Up

im going to draw up the sides, bottom, back, and top, according to the max external dimensions i take from the cardboard templates i make, then im going to have a guy on one of my car audio forums do the port (design it so its the right tuning, etc)

i MAY go sealed instead of ported. dont know yet. i need to finish the design so i can see how many cubic feet i have to work with, then i can decide what subs i can put in there...

 

Good, I think you are going in a much better direction already...just take Dr.O to heart

Can't wait to see more!

 

ya, i still dont know what im gonna do about electrical. no one in the car audio world runs those ultra cap things...NO one....im not gonna change up the game when the batteries are proven to work. i had a kinetik 2400 in once in the mini, got it for cheap, and it helped TREMENDOUSLY with voltage drops, and i had a 3000w rms amp, at 1 ohm....and at full tilt it hardly dropped...this is with the stock alternator too...i dont know though. im deff going to run 4 runs of 1/0 wire from the alternator to the battery in back, most likely under the car, unless i can fit it under the drivers kick panel, which i doubt 4 runs of that big wire will fit...

 

here you go, the admin of a car audio forum i post on has a classic mini (his is BADASS) and he ran his wire under the car

http://forum.realmofexcursion.com/sh...ad.php?t=21520

 

That Mini is just ridiculous!!! He has put some work into that car
I like it.

 

ya thats one of the nicest classic mini's ive seen. looks very nice!

 

(always dangerous) and I think you need to use both batteries and caps. Batteries are heavy & relativly slow, but they have close to a steady voltage output untill they are significantly drained. Caps are lighter and faster, but they have a voltage that decreases as you take power out of them.

Matt

 

Looks like good progress so far!
I <3 Sketch-Up! I'm going to hijack your thread for a sec and ***** out my sketch up stuff....



Hijack over....Back on topic

 

a combined battery/capacitor/fishtank based audio wall!

Poor little fishies... Wonder what they'll have to listen too. Captain and Tanile? Abba? Bill Shatners spoken word album?

Matt

 

karma chameleon - Culture Club

 

nice work that7guy! u got skill in that program, for sure!

cut out the back/bottom today.

 

keep it coming

 

im going to go attempt to make a template for the sides/top now. the sides are gonna be hard....

 

back is green, sides are blue, bottom is red

the sides will be continued tomorow. i gotta finish measuring. it was a PITA getting the exact dimensions and everything

 

Interesting to see what the rest of the sides are going to look like...

 

i have it pictured in my head, i just dont wanna bother drawing it up, when ill just have to redo it when i get the correct dimensions tomorow. only reason im doing it weird like that is to get the most airspace possible, becuase i may do 2 18s