do i need an extra battery to run a AQ2200 an AQ4x90

[audioholic 5,000+ posts]

The reason these discussions always get so heated is because the situation is rarely as simple as most people want to make it out to be. Most people are content to say 'my amplifier pulls 120 amps, so I need to supply 120 amps'... but the reality is the current pull from the amplifier(s) is transient (unless you are one of the rare few running a true class A amplifier). So, factors such as listener preference, and even music type, can and do play a role. We cannot account for those types of factors, so in reality the best we can do is recommend an alt when there is a clear discrepancy between current draw and supply (like 10kw off a 90amp alt), or simply tell the person asking that they may or may not get away with the alt they have, and to carry jumper cables if they are going to try to get away with it.

Lets try to remember that when these discussions get so heated.

 

[audioholic 5,000+ posts]

And yes, calling someone a retard here is a rule violation, as it is an insult. Insults are not allowed, or needed, in the tech section. But since papermaker seems to be a good sport about it, and I dont think Tony meant any harm, I will leave it. Just please keep that in mind for the future guys. Thanks.

 

[CAT MAN 5,000+ posts]

The reason these discussions always get so heated is because the situation is rarely as simple as most people want to make it out to be. Most people are content to say 'my amplifier pulls 120 amps, so I need to supply 120 amps'... but the reality is the current pull from the amplifier(s) is transient (unless you are one of the rare few running a true class A amplifier). So, factors such as listener preference, and even music type, can and do play a role. We cannot account for those types of factors, so in reality the best we can do is recommend an alt when there is a clear discrepancy between current draw and supply (like 10kw off a 90amp alt), or simply tell the person asking that they may or may not get away with the alt they have, and to carry jumper cables if they are going to try to get away with it.
Lets try to remember that when these discussions get so heated.

but you can also remember what the alt doesnt put out you can make up for in battery power. but as my above statement . an alt aint doin it all

 

[audioholic 5,000+ posts]

Yes, the battery works as a buffer when the alt's output is exceeded. I didnt think that was in question here. What is questionable, and impossible for us to predict accurately, is what the listener's preference will do to create the difference between pull and supply.

Adding more and more battery capacity only goes so far. Remember that the key to discussing current pull is it is an average over time type of situation. If your average current pull over time exceeds your alt's output capacity, adding more batts only prolongs the inevitable dead battery problem. Many SPL guys get around this by recharging their batts between runs, for example.

 

[Papermaker85 5,000+ posts]

Alternator - Wikipedia, the free encyclopedia

look I'm not trying to be an ******* but your making yourself look bad..

alternators are daily simple in theory..

they create an ac waveform,use diodes to rectify the signal to dc and have voltage regulation which is based on a resistive load aka a battery and voltage to the exciter..

no battery and you will see a voltage spike depending on the windings and saturation(excitation)

the battery is to start the car and maintain a nominal load on the alternator to regulate voltage..

 

[CAT MAN 5,000+ posts]

Alternator - Wikipedia, the free encyclopedialook I'm not trying to be an ******* but your making yourself look bad..

alternators are daily simple in theory..

they creat a ac wave form use rectify the signal to dc and have voltage regulation which is based on a resistive load aka a battery..

no battery and you will see a voltage spike depending on the winding and saturation(excitation)

the battery is to start the car and maintain a nominal load on the alternator to regulate voltage..

im not looking bad. ive learned from the best . its the way you worded it to make it seem as the battery does absolutely nothing in car audio that looked stupid

 

[Papermaker85 5,000+ posts]

it doesn't and shouldn't be used to supply any current..

if it is the alternators output is being depleted..

which in case adding batteries is about as ideal as adding caps..

yes you can add enough capacitance or battery power to power the system if you modify the alternator to charge below the voltage the battery bank will rest at..

but it's just not how it works..

 

[CAT MAN 5,000+ posts]

it doesn't and shouldn't be used to supply any current..if it is the alternators output is being depleted..

which in case adding batteries is about as ideal as adding caps..

yes you can add enough capacitance or battery power to power the system if you modify the alternator to charge below the voltage the battery bank will rest at..

but it's just not how it works..

if you worded the rest of the stupid things you've said like that. we wouldnt have went 3 pages.....lol

 

[Papermaker85 5,000+ posts]

I'm a terrible writer and iPhone is a *****..

I'd buy a pc but it's all going to prototyping and developing new stuff..