Going 3-way

[thejoker989 10+ year member]

I currently have a 2-way setup in fiberglass kickpanels and my subwoofer in the trunk. The imaging is right on, but the midbass is severely lacking. I want to add some woofers in the factory door speaker location and make it a 3-way setup, but I dont have the money to change my amps and add a seperate crossover to go all active.

So what I want to do instead is...

Use the h/u low pass filter for my subwoofer at 80 hz. Have the frontchannel h/u highpass filter set for 80 or 125 and first going to my amp that will be used for tweeters and midrange, but I will set the highpass on that amp to somewhere around 300, making my h/u filtering do nothing for those speakers. From there run a short patch cable from that amps output rca's to the woofer amp. The woofer amp would have a low pass filter set around 250 - 300 and the highpass will be 80 or 125 depending on the h/u.

How do you think this sounds? Save the money and go fully active?

Will the tweeter/midrange amp filtering have any effect on the outpout rca's?

What is a decent (~40$ max each) woofer?

Does my theoretical setup work? Is there anyother/better way of doing it?

My woofer amp has a bandpass filter, would you ditch the preset h/u crossover points and tune it all with the passive amplifier filters?

No rear speakers will be used.

What I currently have:

15" Rl-P D2: Orion D1200 (600 watts) 3.2ft^3, 28hz

Diamond D661a: Cadence Q2150 (125 watts)

knu 4-gauge.

Click to read more...

 

[enzowho 10+ year member]

Where are the two output channels to run your mid-bass drivers coming from? It seems like they are coming from your sub amp, but does that mean you are ditching your sub???

To answer your questions though...

How do you think this sounds? Save the money and go fully active?

Active is nice, but expensive. Judging on your midbass driver budget, I would stay away from going fully active.

Will the tweeter/midrange amp filtering have any effect on the outpout rca's?

Shouldn't

What is a decent (~40$ max each) woofer?

Dang that's not a lot. Some Adire Extremis would be nice, but who knows how much you can get those for.

My woofer amp has a bandpass filter, would you ditch the preset h/u crossover points and tune it all with the passive amplifier filters?

The filters on an amplifier are active //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif. If this is the amp you will be using for your midbass drivers then yeah, that's probably how i would do it.

 

[spudracer326 10+ year member]

what deck do you have??

and enzowho what part of oregon you from???

 

[thejoker989 10+ year member]

The input for my mid-bass and tweeter amp will come from the front channel output of my h/u. And the input for my woofer amp will come out of the midbass amp. I will not be doing anything with my sub amp besides maybe adjusting the low pass.

//content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif sony deck, but with cc accomadation may pick up an eclipse //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[spudracer326 10+ year member]

just upgrade to better midbasses...possibly dayton rs180 7's??or ascendent audio poly mids....

 

[thejoker989 10+ year member]

The filters on an amplifier are active //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif. If this is the amp you will be using for your midbass drivers then yeah, that's probably how i would do it.

I thought that I had read that filters on amplifiers filter the signal after it has been amplified and not the pre amp signal.

 

[thejoker989 10+ year member]

just upgrade to better midbasses...possibly dayton rs180 7's??or ascendent audio poly mids....

But I think it is my small kick pods that is killing the midbass, although I have heard that the D661's **** big when it comes to midbass

 

[Megalomaniac 5,000+ posts]

Dang that's not a lot. Some Adire Extremis would be nice, but who knows how much you can get those for.

$100 each

 

[enzowho 10+ year member]

and enzowho what part of oregon you from???

Corvallis during the school year.

I thought that I had read that filters on amplifiers filter the signal after it has been amplified and not the pre amp signal.

Hmm...never heard that before. Also, I always figured it would be easier and more efficient to do filtering before amplification.

I think your plan will work though. Also, if you pick up an Eclipse deck it should have 3 RCA outs (most do at least). I would run one pair to your components, one to your midbass drivers and the last to your subs. Then cross your sub at like 60-80 hz (either hu or amp), midbass from 60-180 (probably hu for hp and amp for lp), and your components around 180 (amp).

Also, my midbass died when I threw my components in kicks. I cut a hole in the bottom and essentially vented them into the carpet. Helped with the 125-200 Hz range.