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Hey Yall,

I ordered my new stuff today. I sent off for a 2000 watt BOSS audio amp, and a 240 watt BOSS cd player, with motorized face. I wanted to know if I need a cap. My old system ran 1408watts, and I never had any trouble at all with the battery draining or dying on me. But, with this new one, with 2240 watts of power being put out....Im a little afraid its going to be too much. What do you guys think?



what type and guage of wire should I use to hook everything up? I mean every wire, what should I use? I dont think what I had on there before is going to be big enough for 800 more watts.

And... has anyone had any boss stuff? Is it any good?

thank yall!

Corey
 

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Use the same guage wire for the cap as you use for the amp power wire, i use 12 guage wire for my speakers but then again my amp is only 1600 watts, you might want to go a guage or two bigger if your subs connections are big enough, generally they are about 12 guage size. one thing i do know is that caps are the biggest rip offs out there, they are only good if your alternator can already handle the amp and there is very slight dimming, it will give you an extra couple of decibels in a competition. If you have bad dimming you are going to have to have your alternator re-wound for more amperage.
 

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drag-aholic
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Tony I like your way of thinking, in gereral, caps seem to be a bandaid to a weak charging system for the average Joe. When they came out i had a stock alternator and i had dimmeing lights and everybody said put a cap on it. It seems to me at the time its almost just adding another load to an already over taxed alternator. Since i have gotten a 160 amp alt. and a cap. I'm glad i have it, if nothing else it helps with the lights dimming some.
 

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There is nothing wrong with adding a cap.

Yes a cap does have to charge up but it stiffens the charging system.

Run 4awg wire to your amps and the cap. Make sure your ground wire is the same gauge as your power wire. Wire your cap as close as possible to your amps. Charge the cap before you put it in, unless you like sparks.

Before anybody says a cap is a bandaid or challenges me, keep this mind:

A cap is not a resistor, even though it does have effective series resistance.

Almost ALL electronic boards have "bucket caps" wired close to each IC from positive to negative. The "bucket" is so if there is an increase in current requirement, the cap has charge in its bucket to throw to the IC so voltage is kept constant and does not drop. The 1farad cap is a good bucket for your car's electrical system.
 

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drag-aholic
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The 1farad cap is a good bucket for your car's electrical system.
i realize the benifits, but my point was that is still gets its charge from a possably, already over taxed, charging system. if you add 20 caps and you can only charge to 11 volts, for example, you gained nothing. You need a healthy charging system or the "bucket" will be half full, or half empty :p
 

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Dustin seems right... corrrect me if im wrong...the cap does not do anything untill there is a drop in power (your subs suck it all up) then the capacitor discharges to maintain a constant power level and then charges back up once less power is being used. that sure is a lot of power your talking about, but our cars have 1000a batteries and 130a alternators. i would think you would be all set with a good cap and power wire. i havnt gotten that silly with stereos, but i am curious.

Dave
Infinity & JBL 5x7s all around (25x4 kenwood)
JBL gt1041d... the little 10" that could (100x2)
custom box (no spare :))
 

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biggest problem with a cap is, is that it is only good for shorts bursts of power, then it is drained. At that point, the battery and altenator are again the only things being utilized. It would be good if you are only listening to songs with maybe a fast beat, but for songs with extended bass sections (where the power draw is highest) that cap would only work for a short period of time, before it needed to recharge.
 

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A cap helps keep the voltage up so you won't have a voltage drop over a long run of power cable from the battery to the amp(s). A cap will discharge/recharge very rapidly when the sub amp puts a heavy draw on the line just as it should and this is where the term "stiffening" comes in to reinforce the voltage in the line. The old rule of thumb is a one farad cap for every 1000 watts of amp power. Anymore than that and you may be just spending money for no real benefit. A cap can also make an effective noise choke.

There is a lot more to it but like the saying goes..."Keep it simple stupid"

:)

Mark

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