Thank you RMC and Ian! Much appreciated.
I suppose there are quite a few different ways to skin a cat as they say... Active vs Passive has always been something I wrestle with. Doing either right is not cheap. I suppose the one aspect of the passive crossover network that appeals to me, is that I don't have any unnecessary ADAC going on in my system.
RMC - Thanks, I get what you're saying. I spent time last night looking over Troels' site and some forums. I had initially started to price out coils based on his suggestions of 0.8-1.0mm for mids, and 0.8-0.5mm for highs. As to whether or not that is a hard and fast rule, your answer suggests there are different schools of thinking? As you say, its for testing purposes, so I suppose building a network for that vs implementing a proper finalized one will differ in execution. Changing the awg used tho would affect the resistance and tuning tho, no?
Ian - I have wrestled with a few different approaches to the 2251J and how I would address it. Todallin uses a 2.5 way approach, and part of his appeal is a lack of high pass on the woofer - he made it sound like something to consider. I don't know if there would be merit in testing fully active, as my limited understanding has me thinking its not as simple as translating the electrical active settings into a passive network. Maybe that's part of what you're trying to convey, maybe I am totally Wrong.
- Playing in WinISD a bit yesterday I kept getting results that looked best and smoothest in similar sized enclosures to the 7L size you suggested so feel I was headed in the right direction, so... I APOLOGIZE for the next point... I was trying to find a good primer and used some forum arguments elsewhere to make sense of this.
- What is the effect of a bigger impedance peak on the lower or upper end if using a ported enclosure. Its the relationship between Fs of the driver and enclosure tuning, yes? Would this alone indicate how it's damped?
- Or is being critically damped solely influenced by cabinet size? As it goes up, the system Q goes down, and makes it more damped, yes?? OR due to how everything is related, both this and my previous point indicative of the same? If I change cabinet size, the impedance curve changes IIRC... so maybe I just answered my own question.
- I am not saying that the 2245 wouldn't go to 290hz or wherever it was crossed, but like the idea of trying both to see what they sound like. Especially if going active, it would be easy enough to try, no?
- Should my TS be coming from the before or after power test?
http://www.audioheritage.org/vbullet...hp?17040-2251J WinISD always says theres issues with my TS inputs when it tries to qualify the driver.