Trying to design my own speaker.

[PV Audio 5,000+ posts]

I think one of my first ideas turned out to be the best as far as two way. I tried a split x-over point after seeing that that tweeter has excellent low frequency extension almost akin to a midrange, but the woofer tends to break up higher. So instead, I tried a low pass point of 2.5khz and a HP of 2khz. I then tried using a Chebychev alignment on the tweeter to knock up that dip a bit and a 1st order on the woofer to see if we can get her to take some stress off the tweeter to play those upper mid frequencies. The result is the following:

Notice that only between 500 and 1500 are we -3db down. This appears to be a bit more seamless than before, but I need to keep checking. I'm supposed to be getting ready for school but your *** has me out here thumbing through Testing Loudspeakers to see what might work //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

Ima try somethin else to see if this program isn't bullshitting, then I'll see about using a different woofer that might work better with that tweeter.

 

[PV Audio 5,000+ posts]

I've hear a single cap, 16.7mF on the tweet gives pleasant results. But as of now what you just posted looks good.

//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif//content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif 16.7 milliFarads, or did you mean 16.7 uF aka microFarads?

 

[bose301s 5,000+ posts]

//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif//content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif 16.7 milliFarads, or did you mean 16.7 uF aka microFarads?

Haha, you would be right, uF.

 

[PV Audio 5,000+ posts]

And besides, a single cap means that's a first order filter, so lemme try that since I assume you meant microfarads.

 

[bose301s 5,000+ posts]

And besides, a single cap means that's a first order filter, so lemme try that since I assume you meant microfarads.

Yea, they said a first order with a 16.7uF cap worked well suprisingly. BTW, Zaph Audio has tested both of the drivers, if that helps.

 

[PV Audio 5,000+ posts]

I'm getting a nasty response shelf using a 1st order Solen. It's not a smooth roll off, but rather a stepped rolloff which as I've experienced first hand can cause a bit of midrange honkiness. I'll see what I can do to rectify it though.

 

[PV Audio 5,000+ posts]

This disappoints me because I'm a huge proponent of 1st order crossovers, but I just don't think it'll work well here.

We need squeak and joetama in here to give their input since they both know a ****ton about passive x-over design.

 

[bose301s 5,000+ posts]

This disappoints me because I'm a huge proponent of 1st order crossovers, but I just don't think it'll work well here.
We need squeak and joetama in here to give their input since they both know a ****ton about passive x-over design.

Just for shits and giggle try a 4th order @ 2750.

I did PM squeek.

 

[PV Audio 5,000+ posts]

Aight gimme a minnit.

 

[bose301s 5,000+ posts]

I think one of my first ideas turned out to be the best as far as two way. I tried a split x-over point after seeing that that tweeter has excellent low frequency extension almost akin to a midrange, but the woofer tends to break up higher. So instead, I tried a low pass point of 2.5khz and a HP of 2khz. I then tried using a Chebychev alignment on the tweeter to knock up that dip a bit and a 1st order on the woofer to see if we can get her to take some stress off the tweeter to play those upper mid frequencies. The result is the following:

Notice that only between 500 and 1500 are we -3db down. This appears to be a bit more seamless than before, but I need to keep checking. I'm supposed to be getting ready for school but your *** has me out here thumbing through Testing Loudspeakers to see what might work //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

Ima try somethin else to see if this program isn't bullshitting, then I'll see about using a different woofer that might work better with that tweeter.

I am not sure which I would rather have you change out, the Tang Band woofer or the Vifa tweeter. I have heard greeat things about the XT25 but that woofer is just so **** sexy.

 

[PV Audio 5,000+ posts]

The entire plot from 1k-5k is 6db down. Now, this is using a 4th order Legendre alignment which I have no qualms in saying that I have no idea how they behave, so perhaps someone could educate me //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

 

[PV Audio 5,000+ posts]

It should be the woofer. That tweeter is fantastic, I've heard them before in a 2.5 way using some some of them Seas woofers with the blisters on the cones //content.invisioncic.com/y282845/emoticons/drool.gif.b5e863e893038027711d4402f340dad0.gif

 

[bose301s 5,000+ posts]

It should be the woofer. That tweeter is fantastic, I've heard them before in a 2.5 way using some some of them Seas woofers with the blisters on the cones //content.invisioncic.com/y282845/emoticons/drool.gif.b5e863e893038027711d4402f340dad0.gif

http://www.stereophile.com/floorloudspeakers/805bw/

Those are my comparison point. I am sure my B&Ws will **** whatever I build, but I didn't build them, lol.

 

[PV Audio 5,000+ posts]

Aight bose, I'm gonna try using another woofer that I have experience with personally.

 

[PV Audio 5,000+ posts]

Well before I waste my time doing that, would you ahve any reservations using a cone that looks like this:

They are the most transparent midwoofers I've used, but they ARE hideous and they discontinued the regular D6 and the D6.8 isn't the same.