needless to say I know little about car audio.I have a jvc 35x4 cd player,stock speakers in front(gonna replace)and kenwood 3 ways in the 6x9 holes in back.I think they are decent,I paid like $80 for them 2 years ago,if they are still good.The system sounds good until half volume,after that it sounds worse then the factory unit.So I bought an amp(pyramid 300x2) I know its not the best but figure it would do.Should I hook it to the 2 6x9s or buy 2 woofers for the back?What will the differance in sound be between the both.I carry the kids alot so im not looking for a thumper,those days are far gone,but I want it to sound good at all levels when I do decide to turn it up.Can I hook the amp to a box with 1 woofer and just power that?not sure of amp model number.thanks

 

Your first problem is the stock 4x6's. Even with the headunit you're using is overpowering them so that's where your biggest problem is. As for thinking about putting them on an amp? Don't even think about it

 

buy some bass blocker for you 4x6's I would try to block about 400hz and below off I bought 300hz and its not quite enough. and yes if I were you I'd hook up the amp to 2 subs. that'll change the whole way your system sounds. the bass blockers will help a ton too. in my opinion when your working with smaller speakers, that'll make the biggest difference with them.

 

Well if you're gonna use bass blockers, just remember that (IIRC) the stock speakers are 8ohm.

IF they are, then you'll need a cap of 50 microfarads to cut them off at 400Hz. If they're 4ohm, then 100 microfarads.

And they only cutoff freq. at 6dB/octave. So it's a little safer to go too high, than too low.

Radio Shack has capacitors that will work. They're about 1/3 the price of "bass blockers" that you'll buy at the local stereo shop.

AJ

 

do whaaat?maybe I shouldve said I know nothing about car audio.Bass block who,and lower ohms to what?I have no clue what that means.So if I get good fronts and hook the amp to the 6x9s then will it be decent,or work right?Do I need bass blockers,or change to omhs,etc?thanks

 

An OHM is a measurement of resistance. Kinda like a fuel pressure regulator. And the higher number of OHMs you use is the same as using adjustments in the regulator to boost fuel pressure.

So let's say you have a 12 PSI fuel pump. And you want to make it flow 6 PSI to the carb. Then you would use 6 PSI of resistance. And you do this by turning the valve in the regulator. But if you only want 4 PSI of pressure at the carb, then you would need 8 PSI of resistance at the valve. So let's say that the 8 PSI of resistance that you need is OHMs when you're talking about elec.

So now you have 12PSI (let's call that 12volts) and a 4 PSI (let's call that OHMs) regulator. You will get 8PSI of fuel pressure at the carb. But now the amount of fuel that is seen going from the regulator to the carb is now rated at G-allons P-er H-our (GPH). We'll call that "wattage".

OK. So let's turn this around so that you can understand it in electrical terms.

You now have 12 Volts (or PSI) and 4 OHMs (resistance, or the regulator), and 8 watts (or GPH)

The higher the resistance, the less flow you're going to have.

The amplifier is a 12 volt amplifier. The wire is the "fuel line". And the speaker is the "valve in the regulator". A speaker that has 4 ohms of resistance will let 8 watts get through. A speaker that has 8 ohms of resistance will only let 4 watts get through.

Can you see were I'm going here?

The higher the OHMs are on a speaker, the less electricity flow (aka 'watts') your going to get from the amplifier (aka "fuel pump")

Just remember.....

12 volts is the 'pressure'

8 ohms is the 'regulator'

4 watts is the 'flow'

Now these are not the actual formulas or calculations of electricity. They are just examples I am trying to use so that you better understand the "lingo" of electricity. All the formulas and other terms come at a later date.

One more thing. The amplifier needs some resistance, or else the current (fuel) will flow through it so fast that it'll burn up, just like an elec. fuel pump if you let the tank get empty.

If the resistance is higher, then the amp will live a longer, happier life.

If you want the most power (or watts) then use less resistance. And the amplifier will do fine as long as the resistance is kept at or above the manufacture's specifications.

My brain is tired now.
AJ