Going Active?

[dru 10+ year member]

I just recently replaced my mids in my Crystal set with a set of CDT ef6fg. I keep reading these forums and I always see people recommending to go active. I'm pretty curious and probably will do it out of curiosity. How the hell do I go active? and plus Id like to run new tweeters instead of the ones from teh crystal set.

HU is Eclipse 55090 and I have an EQ Eclipse 21010.

All other gear is in the siggy.

Thx everyone.

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[alphakenny1 10+ year member]

not trying to mean but there are tons of threads with this very subject. do a search. maybe i might to try do a write up on what is active because that question has been going around on this forum a lot. and i'm not singling you out, but i'm tired of explaining.

 

[dru 10+ year member]

not trying to mean but there are tons of threads with this very subject. do a search. maybe i might to try do a write up on what is active because that question has been going around on this forum a lot. and i'm not singling you out, but i'm tired of explaining.

yea yea I kno, I just never see a basic full blow explanation of everything

always see you need a xover, and no more information in a post

If I learn anything near sticky material I'll be happy.

 

[Ctminime 10+ year member]

not trying to mean but there are tons of threads with this very subject. do a search. maybe i might to try do a write up on what is active because that question has been going around on this forum a lot. and i'm not singling you out, but i'm tired of explaining.

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yea dude people have to think before they post questions. me and one of my buddies just talked about this the other day and most times if ure thinking about asking a question (especially if it is somthing general like "port area" and "wiring to 2500d" sombody has prolly already asked that question.... look it up if u cant find what u need then start a thread...

 

[alphakenny1 10+ year member]

yea when i have the time i might do a write up on the basics of going active, although i'm still learning myself. or some other ca.com veteran can do a write up. i actually might have time tomorrow so if i'm bored i'll do a write up.

 

[dru 10+ year member]

yea when i have the time i might do a write up on the basics of going active, although i'm still learning myself. or some other ca.com veteran can do a write up. i actually might have time tomorrow so if i'm bored i'll do a write up.

That would be great actually. thx

 

[alteraudiousa 10+ year member]

all things aside, going active is doing away with the passive crossover and powering each speaker individually using your own judgement on crossover points instead of the passive crossover that had a mapped out crossover point and slope. If you like you can PM me and i'll explain it in more detail.

 

[squeak9798 5,000+ posts]

yea yea I kno, I just never see a basic full blow explanation of everything
always see you need a xover, and no more information in a post

If I learn anything near sticky material I'll be happy.

The basics;

You will need;

1) An active crossover. This can either be an external unit (that is connected via RCA's between the HU and the amplifier), the crossovers in the headunit, the crossovers in the amplifier, or any combination thereof (i.e. using the HU's internal xover to highpass the mids and use the amplifier's internal xovers to lowpass the mid and highpass the tweeters). An important thing to note here is that it can't just be *any* crossover...you need to be sure that whatever option you choose allows you to select the crossover points and slopes that you need. So if you have a tweeter that needs to be crossed over no lower than 2.5khz and with a decently steep slope (18db/oct, for example), make sure that you can acheive atleast a 2.5khz crossover point with atleast an 18db/oct slope. Also, the more flexible the active xover, the better. Plain and simple.

2) One channel of amplification per speaker. For example, if you are going to be running a 2-way frontstage (one tweeter and one mid per side), then you will need atleast 4 channels of amplification (a 4 channel amp, two 2 channel amps, etc) just for the frontstage.

Other than making sure you have all of the necessary wiring....that's pretty much it.

And, as was mentioned, you will ditch the passive crossover and wire each speaker directly to one amplifier channel.

From there, it's just setting everything up correctly using the most appropriate xover frequency and slope for your application.