SteveTheShadow wrote: ↑Sat Oct 23, 2021 8:22 am
To get a feel for full range drivers: if you go to the Audio Talk Owston meet, I will have my Fane 12-250-TC 12” aperiodic speakers on show. It’s nice to experiment, but the frustration can be terrible, if you are not getting anywhere. Sometimes it pays to hear what other people are doing and pick up ideas off them. Don’t know whether Scott L will be there, he usually turns up but never commits to coming, but there’s me and there’s Steve Shiels.
Thanks for your advice Steve, much appreciated. I am thinking seriously of going to Owston but risk depressing myself even more with further proof of how inadequate my work has been.
I like the idea of your Fane 12" FR but I'm not prepared to accommodate boxes of that size in my little living room. It would have to be something smaller but then I am limiting myself to bass output and sensitivity. I don't think I know enough about the driver parameters to chose the best one.
I really like the 2" FR in small spheres above the up firing doped 6.5". Most would leave it at that and be done with it but oh no not me. I am my own worst enemy. Problem is I have had a taste of what a driver with less mass and no dope can do and I want it (the bits I liked about it). I don't want passive speaker level filters either for various reasons - I don't know what I am doing with them and the thought of using a coil fills me with horror.
So after thinking about it I have several options
1) Live with the doped 6.5" run fully open & 2" FR tweeter 1st order high passed passively at line level
2) Use an up firing wideband like the Alpair 12PW run fully open & 2" FR tweeter high passed passively 1st order at line level
3) Try and choose a down firing bass and up firing mid to marry with this 2" forward firing full range tweeter- all filtering done 1st order passive at line level.
One thing is for sure. There is no way I am going beyond 1st order even with the problems it throws up. The drivers overlap for many octaves so maybe better results come from using the same type of cone material for both. The Alpair 12PW was paired up with the Alpair 7P I think but that is no longer made and the resulting box size required means the sphere above the up firing driver would be too big.
At this rate I will be back at point & squirt having done a full circle of confusion. It's fooking annoying.