Capacitor or Second Battery??
|
Bronze Member Username: Wylie_coyotePost Number: 11 Registered: Apr-07 | so the capacitor stores like a resevoir of power for the amp so it stops things like the disco effect in the car. but the second battery can also have this affect and power big sounds, the point of this thread is to find out which is the better option, personally i use the second battery |
|
Silver Member Username: Dsmith07NC Http://com4.... Post Number: 641 Registered: Jun-06 | 2nd batt no doubt |
|
Bronze Member Username: Wylie_coyotePost Number: 12 Registered: Apr-07 | wts ur reasoning behind it though, because the second battery would be pushing the alternator quite a bit aswell. now in my first car the second battery was the one that was getting charged and the front battery was drained flat (dint realise till i took the 2nd one out and the car wudnt satrt) i know there are ways around this but its too expensive an option for me. give me specifics people, lets get to the bottom of this once and or all |
|
Silver Member Username: Dsmith07NC Http://com4.... Post Number: 642 Registered: Jun-06 | i dont have my own reasoning or theory or whatever but every where you read it says that capacitors are not needed and a extra battery is always nice |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 11804 Registered: Dec-03 | we've been over this already http://www.bcae1.com/capacitr.htm http://www.betteraudio.com/geolemon/newmain/battcapalt/ http://www.bcae1.com/charging.htm http://www.bcae1.com/chargin2.htm http://www.bcae1.com/battiso.htm http://www.the12volt.com/info/recwirsz.asp an isolated battery will stablize voltage rails when the car is turned off, and will protect the starter battery. a capacitor's voltage rails parallel the charging system voltage rails. unless you have a sufficient alternator, the capacitor does NOTHING to help the charging system. N O T H I N G what you should probably look into is a high output alternator, since that's the sole source of current when the engine is running in your car. |
|
Bronze Member Username: Wylie_coyotePost Number: 14 Registered: Apr-07 | sorry mate didn't realise its already been covered |
|
Silver Member Username: Trey4sportsPost Number: 913 Registered: Sep-06 | its cool, GW is a legend around these forums  |
|
New member Username: MisifusPost Number: 6 Registered: Dec-06 | hey... i just bought a car and it came 2 amps 4 speakers and 2 subs... but i dont know anything about stereos and if i want to play it when the car is not runing it only plays for like 20minutes then it wont start ...what should i do?? |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 11810 Registered: Dec-03 | get a battery isolator and a second battery to use as a dedicated audio battery. that way when the battery is run into the ground (deep cycle) the starter battery still works |
|
New member Username: Justin_15_07Manitou Beach, Michigan United States Post Number: 2 Registered: Apr-07 | To be honest, i wired up a sufficient cap to my old system, and 3 years no problems. I upgraded to much more powerful system, so my cap doesnt do anything, lights dim, battery gauge flops around. When gettin a cap use the formula of .5 farad for every 500 watts max |
|
Gold Member Username: Nd4spd18Southeast PA Post Number: 1406 Registered: Jul-06 | " Capacitor or Second Battery?? " None of the above. HO alternator. |
|
Bronze Member Username: Wylie_coyotePost Number: 19 Registered: Apr-07 | getting a new alternator is too expensive, and in some cases unneccessary, you gotta first find the right one and then get it fitted, i don't think its worth the hassle unless u got some big time system |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 11848 Registered: Dec-03 | if the alternator is too expensive for yu, then buy smaller amplifiers. end of story. the alternator is the sole source of current in a running car. the batteries should be in a charge-state, and capacitor voltages parallel the circuit voltage rails, so if the alternator can't keep up, a capacitor can't do a thing about it. Now, you can believe what you like, but for the record, I have a little experience in this field.. 20 years OTJ, master installer, and electrical engineering degree. I have a fairly good understanding of charging systems in cars. just for what it's worth. |
|
Gold Member Username: Nd4spd18Southeast PA Post Number: 1421 Registered: Jul-06 | " i don't think its worth the hassle unless u got some big time system " Then you need to do some reading about how electrical systems work...... |
|
Silver Member Username: Sinful_systems7015 INCH WANG... Post Number: 624 Registered: Nov-06 | I agree with M.S and GW. I also have a massive amount of knowledge in this field. |
|
Bronze Member Username: Big_edge_headPost Number: 39 Registered: Mar-07 | or u can do the big 3 first then see if HO alt. is needed |
|
Silver Member Username: KillswitchjdPost Number: 404 Registered: Apr-06 | ho alts lose gas mileage>? d*mn |
|
Bronze Member Username: Big_edge_headPost Number: 42 Registered: Mar-07 | so then do the big 3, see if it improves |
|
Gold Member Username: JuliobSanto DomingoDominican Re... Post Number: 4388 Registered: Dec-05 | "ho alts lose gas mileage>? d*mn" But not too much... almost like a running car with A/C on |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 11874 Registered: Dec-03 | the HO alternator will increase drag on the belt driven off the crank, but not enough in most cases to notice. |
|
Silver Member Username: KillswitchjdPost Number: 407 Registered: Apr-06 | lose horsepower glasswolf? |
|
Bronze Member Username: Wylie_coyotePost Number: 21 Registered: Apr-07 | u know what i was in a corsa 1.2 when i started pushing 1000rms sub with a 1200rms amp and i definately noticed the car started to drag, it improved after i put in the second battery though |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 11880 Registered: Dec-03 | 1 horsepower = 746 watts, or 7445 BTU/hour that should give you a rough idea. watts = amperes (from the alternator) / 12 (volts) |
|
Gold Member Username: CarguyPost Number: 6106 Registered: Nov-04 | "watts = amperes (from the alternator) / 12 (volts)" What is that formula for? I thought watts always equaled amps*volts. |
|
New member Username: Ray21388Charlotte, N.c. Usa Post Number: 1 Registered: Apr-07 | I FOUND A STRONGER AMP AND TRIED TO HOOK IT UP AND I DID BUT WE=HEN IT DID NOT WORK I CHECK MY WIRING AND MY FUSE IN THE LIVE WIRE WAS BLOWN RUNNING FROM POSITIVE TERMINAL TO MY AMP. I CHANGED THE FUSE AND ITS KEPT BLOWING SINCE WHAT CAN I DO? |
|
Gold Member Username: CtmikeCt. Post Number: 3951 Registered: Feb-06 | YOU CAN TURN OFF THE CAPS LOCK AND START YOUR OWN THREAD. |
|
New member Username: Ray21388Charlotte, N.c. Usa Post Number: 3 Registered: Apr-07 | i just need some help i m not tryin to go through all of that for on simple question |
|
New member Username: Ray21388Charlotte, N.c. Usa Post Number: 4 Registered: Apr-07 | but whatever i'll do that |
|
Bronze Member Username: Wylie_coyotePost Number: 22 Registered: Apr-07 | from the look of that formula the drop in horse power is very small, but does any of it also depend on the engine size of the car i.e smaller engine more noticeable, bigger engine, less noticeable Ray if you're reading this then most likely the fuse between ur battery and amp is too small, i had the sme problem and thats what it was. also remember that this fuse is there to protect ur batter from overloading incase of a crash so the general rule of bigger is better can be followed, but make sure ur amp has its own fuses |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 11890 Registered: Dec-03 | yeah I meant * not /, sorry. blood pressure was about 100/35 when I typed that and my brain wasn't workin' so well. anyway, yeah a smaller engine will feel the loss a bit more since the loss is a fairly fixed amount, say 200A for an alternator, nd a smaller engine has less horsepower, thus loses a larger % of the total power. Still, I had a 150A alternator in a Festiva and never really felt any drag on the engine from it. System consisted of an Orion 2125SX and a 280GX, both class A/B, with a combined power output of about 820 watts RMS "rated" |
|
Bronze Member Username: Wylie_coyotePost Number: 24 Registered: Apr-07 | check this people, i heard that the standard alternators that come in diesel cars are better than the standard alts that come in petrol cars, is this true cos if it is then i need to get me a diesel |
|
Bronze Member Username: Justin_15_07Manitou Beach, Michigan United States Post Number: 28 Registered: Apr-07 | I have 2 Power Acoustik Lt1920's bridged and each one ran to a audiobahn AW1005N sub. Im curious if this will hurt my altnerator, it will probably be running about 1500RMS watts. If so should i get like a 4.0 Farad cap? |
|
Gold Member Username: Nd4spd18Southeast PA Post Number: 1562 Registered: Jul-06 | " check this people, i heard that the standard alternators that come in diesel cars are better than the standard alts that come in petrol cars, is this true cos if it is then i need to get me a diesel " I don't understand why the f*uck people will do anything to avoid getting an HO alternator when you absolutely cannot run a high powered system without one. People like me, Glass, Issac, Sinful try to explain to people how an electrical system works but nobody listens...... |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 11905 Registered: Dec-03 | diesels have smaller alternators, generally, since all they use aare glow plugs to warm the block. they don't need electricity to fire plugs like a petrol car does. there is no way around needing a high output alternator if you want to run big amps. period. |
|
Bronze Member Username: Justin_15_07Manitou Beach, Michigan United States Post Number: 35 Registered: Apr-07 | http://www.betteraudio.com/geolemon/newmain/battcapalt/ im soo glad i foudn this website, it has cleared up everything |
|
Bronze Member Username: Wylie_coyotePost Number: 28 Registered: Apr-07 | listen mate, i understand about needing a high output alternator to run the system and the car, i even know what a capacitor is used for now. however not all of us are running a big system, the whole point of this thread was to find out what would be the next best alternative for people who aren't running huge systems, now tell me this..why are u geting all emotional and worked up about it? wts wrong with wanting to know if a diesel car comes with a better standard alternator? |
|
Gold Member Username: JuliobSanto DomingoDominican Re... Post Number: 4423 Registered: Dec-05 | ^^^^ haha. 1- Run smaller sistems. Try learning how to build nice ported boxes so you don't get hungry for bass all the time. I got a 1200w rms sistem and guess what i did. I stopped all installation cuz when i tried, my voltage was dropping. I decided to save for a HO. Now i got the money and i'm going to buy it. If you guys want music, then start adding components to suit your needs hahaha lol! |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 11912 Registered: Dec-03 | It's annoying because people ask the same things over and over again and we get tired of answering the same questions. Geolemon is a good guy. he wrote that betteraudio article on charging systems. Last time I spoke with him, he was working on a design for a new high excursion XBL^2 based SQ sub, but I have no idea how that's coming as of late. |
Main Forums
Today's Posts- Home Audio Forum
- Home Video Forum
- Home Theater Forum
- Car Audio Forum
- Accessories Forum
- All Forum Topics