New build for me

[seagrasser]

Going to try an MTM with these drivers.

Woofers: Usher 8945P
Tweeter: SEAS Prestige 27TBCD/DXT

First try at designing a crossover too, so let see how long this takes. Once I get far enough along, I'll create a post in the project showcase.

Opinions welcome.

[Chris Roemer]

If you search PE for # 296-602, you can still get (15 yr old!) CLIO f/z data for these woofers.
PM sent.

[seagrasser]

Started toying with the design of the crossover. This is a novice first stab based on previous designs compiled in XSim. Critiques are welcome.

[seagrasser]

[seagrasser]

This is where I am most unsure of things.

[seagrasser]

Perhaps I should move this to the Speaker Project section?

[Chris Roemer]

Your LCR "notch" on the woofers is basically ineffectual, and up near 6kHz, whereas the breakup is more like an octave lower.
There's nothing wrong w/your impedance plot.

[seagrasser]

Will go back to notch and remove to see what the effect is. Thanks for the feedback

[tom_s]

You could probably tank that breakup over the first inductor. It would save you a coil and use a tiny cap - maybe a .47uF. I would add a few ohms in series with that cap just to keep from shunting HF directly to ground and making your amp unhappy.

-- Just looked at the raw response from the Usher - maybe a simple tank won't be effective here. Carry on....

[seagrasser]

Tried a second order on the woofers and retooled the notch. This allowed me to remove the padding on the tweeter.

[seagrasser]

response, a little dip at 1.2k I can't seem to deal with. I can probably live with that

[seagrasser]

impedance