I don't see the Alpha as a step up, even tho I do like and respect Eminence drivers. If you like the idea, it's not a bad way to go.
You don't have to do a crossover on the Betsy, but it's not a bad idea. The Betsy is only going to play so low, adding a high pass filter just means you aren't throwing energy at it that serves no purpose. And you aren't asking the driver to move the cone for bass sounds that don't add anything. A single cap is all you need. I like the motor run oil filled caps for this sort of job.
You don't have to do a crossover on the Betsy, but it's not a bad idea. The Betsy is only going to play so low, adding a high pass filter just means you aren't throwing energy at it that serves no purpose. And you aren't asking the driver to move the cone for bass sounds that don't add anything. A single cap is all you need. I like the motor run oil filled caps for this sort of job.
Thanks for the clarifications.
The other path I'm looking at besides a full range driver was going with a Coaxial. Namely the 15" Silver Iris from hawthorn audio or possibly the Beta-10CX from Eminence. I like the coaxial because they have the unified look of a full range with the wider bandwidth of a two-way. Space is also a big consideration and I think two 15" drivers would be overkill for my needs.
Coaxials are not as easy as they should be. I've heard and worked with a lot of them, and crossover development can be a long process. It does pay off in the end, tho. 
As for the twin 15s, since I was building a tall baffle, so there was no reason not to do the stack. No more footprint than a single 15". But if you need to stay low, the twin woofer probably won't work.
As for the twin 15s, since I was building a tall baffle, so there was no reason not to do the stack. No more footprint than a single 15". But if you need to stay low, the twin woofer probably won't work.
noob question
what is a fairly big coil in series? and is there somewhere I can get more info on the cap you used?
what is a fairly big coil in series? and is there somewhere I can get more info on the cap you used?
No, but Doug [https://www.diyaudio.com/forums/members/d-to-the-g.html] was here today, so it's not like he's abandoned us, what with some drivers posted for sale recently with no forum responses: NIB but boxes aren’t new!
GM
GM
. What do you plan to build?
I'm sure we will! Haha!
Experimenting with various full range drivers on open baffle to see which I like best. Planning to supplement the bottom end with some GRS 15PF-8's (2 or 4) and active crossover with miniDSP. Also working on various amps to power it all; ACA, Alpha 20W, MoFo, M2x, MyRef Fremen Edition.
Experimenting with various full range drivers on open baffle to see which I like best. Planning to supplement the bottom end with some GRS 15PF-8's (2 or 4) and active crossover with miniDSP. Also working on various amps to power it all; ACA, Alpha 20W, MoFo, M2x, MyRef Fremen Edition.
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