Adire Extremis 6.8 Questions

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DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: September 28, 2005 at 1:56 PM / IP Logged

The crossover frequency between adjacent drivers (sub woofer to woofer, woofer to tweeter) should be the same. If you use 2KHz for the tweeter use 2KHz for the woofer. (2KHz is at the ragged edge for the Morel. I recommend if you do this to use at least a 3rd order crossover slope.) The Extremis can reproduce sound down to about 33Hz, but if you use a subwoofer, use the same HP setting on your mains as your LP on the sub.

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Master Asylum

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Posted: September 28, 2005 at 11:03 PM / IP Logged

Erm, ok. So I'm going to crossover at like 3000hz for mid/hi. As for the low/mid I'll probably crossover similar to where it is now. I will see as to what that is. Wjat os a 3rd order crossover slope?

1998 Monte Carlo w/

Eclipse CD8454

2xRockford 5.25" Power 2-way T152C

2xRockford 6"x9" Punch 3-way FRC4369

1xMemphis 16-MCH1300 5-channel

2xKicker 12" L5 Solobaric-2 Ohm

haemphyst

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Posted: September 29, 2005 at 1:08 AM / IP Logged

Master Asylum wrote:

Go down to 2500@18dB (third order) This'll give you better sound power, and you'll still have plenty of capacity with those tweeters.

As for mid-bass to sub? I'd go NO HIGHER than 80Hz, and if you are willing to play arouns with some EQ and crossover slope, you could probably get down to 50 (even better AFAIAC).

A crossover "order" is a 6dB slope. Each order is a multiple of 6 - 4th order would be 24dB, and so on.

It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Master Asylum

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Posted: September 29, 2005 at 11:00 AM / IP Logged

Ah ok, got that now. Ok so I'm gonna have the lows crossed over at like 80hz and my mids will stop there too, what order for that? And what is a good way to determine which order is best? After that the mid/high we can do at like 2500hz on 3rd order, so what would I need for that?

1998 Monte Carlo w/

Eclipse CD8454

2xRockford 5.25" Power 2-way T152C

2xRockford 6"x9" Punch 3-way FRC4369

1xMemphis 16-MCH1300 5-channel

2xKicker 12" L5 Solobaric-2 Ohm

Francious70

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Posted: September 29, 2005 at 2:42 PM / IP Logged

I'd say start with a 24db/oct. crossover, and work down from there if it dosen't sound right.

Master Asylum

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Posted: September 29, 2005 at 11:23 PM / IP Logged

Erm, the higher the order, the more defined of a crossover, correct?

1998 Monte Carlo w/

Eclipse CD8454

2xRockford 5.25" Power 2-way T152C

2xRockford 6"x9" Punch 3-way FRC4369

1xMemphis 16-MCH1300 5-channel

2xKicker 12" L5 Solobaric-2 Ohm

Steven Kephart

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Posted: September 29, 2005 at 11:50 PM / IP Logged

What do you mean by defined?

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Master Asylum

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Posted: September 29, 2005 at 11:52 PM / IP Logged

Like a sharper division I guess. Like higher order means the drop off after that frequency is that much more severe? Or if someone could explain, that'd be great.

1998 Monte Carlo w/

Eclipse CD8454

2xRockford 5.25" Power 2-way T152C

2xRockford 6"x9" Punch 3-way FRC4369

1xMemphis 16-MCH1300 5-channel

2xKicker 12" L5 Solobaric-2 Ohm

haemphyst

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Joined: January 19, 2003

Location: Michigan, Bouvet Island

Posted: September 30, 2005 at 12:48 AM / IP Logged

It refers to the roll off, in dBs per octave. If your flat (or 0dB or reference) frequency is, let's say 1000Hz, a 6dB slope means that at 500Hz, the output of the driver is 6dB lower than the 1000Hz frequency. 2nd order, or 12dB would be 12dB "down" at 500Hz and a 3rd order would be 18dB "down" at 500Hz.

It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Master Asylum

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Joined: November 05, 2004

Location: United States

Posted: September 30, 2005 at 12:59 AM / IP Logged

Ok, so... I looked up octave(why I didn't before, not sure.) I'm guessing THIS is the best definition to use...

The interval between any two frequencies having a ratio of 2 to 1.

That would mean something like 1000 is an octave lower than 2000, which is an octave lower than 4k, and so on. 500 is an octave lower than 1000, which 250 would be the next octave down? Please correct me if this grasp is wrong.

Assuming I have that right, I wanna get the tweeter at 2500 with a 3rd order crossover. (What exactly would be the reasoning for the 4th order recommended otherwise?)

Now as for the lows, 80hz with another 3rd order? or 4th order?

And for the mids, yeah... I was wondering, what if I set my HU up to pro mode that looks at the pre-outs as hi/mid/low instead. If I used the crossover there for low/mid/hi, would that make it REALLY easy for getting it all done? I mean theoretically if this works(I could be just out there, but its worth the idea) I could just match the crossover for the lows and his to the same as the HU. Then like on the mid use that crossover and have no crossover on the amp. If this wouldn't work, why exactly? And is there ANY way this WOULD work? I am kinda assuming that crossovers have a default setting like eqs.

1998 Monte Carlo w/

Eclipse CD8454

2xRockford 5.25" Power 2-way T152C

2xRockford 6"x9" Punch 3-way FRC4369

1xMemphis 16-MCH1300 5-channel

2xKicker 12" L5 Solobaric-2 Ohm

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