A 8 incher with a paper cone

[Inductor]

Originally Posted by alspe

Have you built speakers of Seas A26 already? What tweeter to match A26's roll off and what XO/slope?

Good question, that's a never ending job. There are a few options. All of them an application in it's own, with it's own different Xover.
1. SEAS Excel E0006-06 T25CF001
2. SEAS Excel E0038-06 T29CF001
3. SEAS Prestige H1318-06 29TFF/W

[alspe]

How great is demand for little waveguide in tweeter? I think tweeter must be crossed at 3000 Hz if 1st slope is used. No lowpass XO and 1st degree high pass may give best phase?

[Inductor]

Originally Posted by alspe

How great is demand for little waveguide in tweeter? I think tweeter must be crossed at 3000 Hz if 1st slope is used. No lowpass XO and 1st degree high pass may give best phase?

(you can start a new thread) The xover is not the same as the phase you mention. It can be a 1order (what sometimes makes things easier) and if not in phase with the woofer, or a 180 (90-90) phase shift can kill it. The phase you mention is in relation to (something) where the phase of the woofer is. No phase (shift between the two in frequency) the better. So if a (for ex.) 3. order and in (they are in) phase (phase coherent between wo and tw on the xover freq. band) the better.