posted
i know i need a second battery for a fact cause i will be using an earthquake200DHC amp wich puts out 2000X1@2ohms, would i also need some caps with this if so how many i was thinking of 3 caps since i have another amp for my highs but not this powerfull. 1 optima battery and 3 caps with a solenoid would it do the job? in a 96 DODGE stratus
posted
you probably dont need another battery, you may want to upgrade your stock battery to an optima, but thats all as far as batteries go, unless you want to play your system for long periods of time with the engine off. as for the caps, the general rule is 1 farad for every 1000 watts. im assuming when you said you were thinking of 3 caps, you mean 3 1 farad caps, you will probably be ok with just 2 1 farad, or you could get 1 1 farad and 1 1.5 farad, that should be plenty. if your planning on adding more amps later, you could go ahead with the 3 farad or 2 1.5 farad (same power, less to install) if your lights start to dim when you have the caps, youll need a new altinator, but i dout that will happen if it has a decent sized alt now... anyway, the alt is another story, tackle that only if you have to. just remember, that second battery isnt going to do anything, just add a load to your alt...
------------------ Do as little as possible to achieve maximum recognition.
posted
um, 3 batteries?? for a 2k watt amp, i dont think so. 3 caps MAYBE, but like i said before, extra batts will only add an extra load to the alt, but will let you play your radio longer with the engine off, thats it, thats the facts, i realize that some people add a second battery and it fixes the prob, or they think it does, it doesnt, it hides it. trust me, extra batteries will do NOTHING for your system while the engine is running.
------------------ Do as little as possible to achieve maximum recognition.
posted
damn you'd rather spend all that money on 3 caps instead of buying a HO alt? I mean if you're gonna spend the money at least do it right man...go through your yellow pages and start calling up alt and starter shops and you'll find a good alt for around $250...you're more than likely gonna have to deal with the alt problem at some point so just get it over with now and save yourself the future frustration
------------------ The more i learn, the more i realize how little i know!
Posts: 215 | From: San Jose, CA | Registered: May 2000
| IP: Logged |
posted
ok, im tired of explaining this. i read your explination about charging with less amps but longer(i guess if your system didnt pull a lot all the time, that would be ok), but you shouldnt run an alt that hard for a long time. its very simple, power doesnt just appear, it has to come from something. that something is either the alt. or the battery(s). now, yes, the batteries will supply power for a little while, but eventually you will have to replace that power from somewhere (the alt), those batteries arent going to just produce power, thats impossible. i do realize that when you add a second battery or a 3rd or whatever, it sometimes seems like it helps, but you will end up ruining the alt eventually if you do that, unless it is one designed for that type load. if your system pulls more than your alt will put out, the only solution is a bigger alt. if you dont get another alt, you WILL BURN IT UP eventually, doesnt matter if you have 1 or 100 batteries, its just that when you have a lot of batteries, it slows the process down, but when it does burn up, youll still end up buying a new alt (that you should have gotten to start with), but youll also have all this money invested in batteries that you dont need.
------------------ Do as little as possible to achieve maximum recognition.
posted
First of all Kappaboy I would like to ask what experience you base your opinions on? You say you disagree with the statements in my FAQ? Before opening my own audio shop with Dr. Hertz I was an auto electric mechanic by trade. I built and rebuilt alternators, and was submerged with all aspects of a vehicles charging and electrical systems all day. Not to mention I have taken the title of loudest vehicle in Western Canada in our respective power class three years in a row. Granted if you stereo consistantly draws more current that you alt can supply you will need to upgrade it. But I really don't know many people that drive around listening to test tones all day long, you must remember that music is dynamic, therefore not many people draw 150amp continuously all day long. If you think you do get an AVR and actually measure what is happening. I would like to know what benifits you believe capacitors will provide over low internal resistance batteries such as optimas?
------------------ Knowledge=SPL As does and open mind Team Hertz Canada Pres Hertz Audio
Posts: 221 | From: Calgary, AB | Registered: Nov 1999
| IP: Logged |
posted
ok, im not going to start an argument with you because i dont want this to turn into a forum like sound domain, but anyone with any since can realize that if a sound system draws more power than an altinator can put out, the battery(s) will eventually go dead, if you cant see that, your dont need to be working on these cars. im sure that there are many people here that will back me up on that.
------------------ Do as little as possible to achieve maximum recognition.
posted
Seems you still havn't gotten the part about STEREOS NOT DRAWING MAX CURRENT ALL THE TIME.
As my partner stated. unless you listen to test tones at full volume, you aren't coming close to max alt output all the time.
So, what good is a battery then? It reduces the voltage drop during peak SPL (yes, batteries GENERATE voltage, they're not a storage device). So the alternator has less to charge after the note, and less output produced during the peak, which my friend, reduces strain on the alternator.
Mr. Hertz does know what he's speaking about, as he mentioned he is an auto electrical mechanic by trade. So when it comes to charging and batteries, I'd say he's about as much an expert you're gonna find.
And none of this is being said to start an argument, I'm just stating documented tests we (as a shop and as competitors) have tryed.
------------------ Shaughn Murley HERTZ AUDIO Team Hertz CANADA
[This message has been edited by DrHertz (edited 06-12-2000).]
Posts: 444 | From: Red Deer, AB, Canada | Registered: Mar 2000
| IP: Logged |
posted
the FACTS are that the alt supplies the power when the car is running, and when the alt can't give off enough power it reaches into the battery for that extra juice. If you have more than one battery, it will take much much longer to drain them down to nothing. But if you have a HO alt it wont matter because the amps wont ever grab from the battery.....now this isn't the case in all systems, of course, but for most daily drivers, a HO alt is a much better road to stroll down than adding batteries. Those are the facts, more or less
------------------ The more i learn, the more i realize how little i know!
Posts: 215 | From: San Jose, CA | Registered: May 2000
| IP: Logged |
posted
i realize that it isnt drawing max current all the time, i never have and never will say that it will, i said that if the system is drawing more than the alt can hanlde, you have to get a bigger one. i realize that it peaks out sometimes, thats the purpose of the cap, thats what they are designed for, and you could use a battery in its place if you wanted, but a cap is designed for just such a reason.
------------------ Do as little as possible to achieve maximum recognition.
Printer-friendly view of this topic