Active vs. Passive: An attempt by me to explain

[CRXBMPN]

two years later and still such a great tutorial. the ideas outlined in this thread are just now fitting together in my head.

this does not mean that the ideas take this long to understand, only that my venture has taken me on a 2 year path to reach the level of understanding that is presented in these outlines.

i agree... i've been an SPL head for about 7 years and this is the first time i've actually looked in this section and I have always wanted to know the legit and somewhat technical terms and differences... very good read!

[macq32]

wow... great thread, I feel that I actually have a decent basic understanding

[de8212]

I'm looking into this but not sure if my headunit will work.

it's an alpine 7894. Looking at the manual it says it has a built in crossover

HPF (Setting the High Pass Filter):
FLAT (OFF) ↔ 80Hz ↔ 120Hz ↔160Hz
Outputs all frequencies higher than that selected
according to your preference

and

LPF(Setting the Low Pass Filter):
FLAT (OFF) ↔ 80Hz ↔ 120Hz ↔160Hz
Outputs all frequencies lower than that selected
according to your preference.
(Only available when using the subwoofer output from
this unit.)

Since I am not running a sub that would make the LPF option not applicable.

So, that leaves me with only HPF. But I have a 4 channel amp and would need seperate settings for the front two and rear two, right????

Also, I though I read somewhere (maybe earlier in this thread) where the settings were changed in db's? but mine are settings for Hz????

I'm assuming my Alpine just won't do it. Anyone know for sure?

Here's alink to their manual.

http://akamaipix.crutchfield.com/Man...500CDA7894.PDF

[eggyhustles]

can you go active with a dnx8120 or avic n5?

[nismos14]

No, neither one.

[TurdFergueson2]

can you go active with a dnx8120 or avic n5?

Pioneer makes one DVD HU that can, but it doesn't have Navi. And it's expensive as hell

Pioneer
AVH-P7950DVD

[eggyhustles]

Hmm..so what what be needed go active with either, an external processor?

[TurdFergueson2]

Hmm..so what what be needed go active with either, an external processor?

I would say a capable HU and a 4 channel amp. Also some mids and tweets without the crossover. That's pretty much it. There are some other alternatives, but I feel this is the easiest way.

Not sure if there is a way with either of those. I believe you can hook an external processor up to the Alpine screens.

[eggyhustles]

I wanna go active..but i also need nav

[DidUHearThat?]

Then just get an external crossover or an amp that has a built in crossover that's flexible enough to hit your crossover points.

[eggyhustles]

seems like a shitload of work lol

passive it is..

[DidUHearThat?]

seems like a shitload of work lol

passive it is..

It is?

[James Bang]

basic 3-way setup:

highpass tweets
bandpass mids
low pass subs

4-way (3-way fronts):
highpass tweets
bandpass mids
bandpass midbass
low pass subs

[joeboxer5876]

seems like a shitload of work lol

passive it is..

first thing i did when i started learning of this site was buy and alpine 9835 with the crossovers built in the hu and got rid of my passive crossovers. it is nice and one of the reason why i wouldn't buy and dvd unit. only units i would want cost over 2 grand! its very easy to do with and external crossover but it is really nice when the crossover is built into the HU.

[JimJ]

I wanna go active..but i also need nav

Alpine W205/505, Blackbird, H701 processor...