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Thread Hijacking Continues... Re: Passive Crossover

Posted by Dr Deville (A) on February 22, 2007 at 01:03:41

In Reply to: Passive Crossover posted by KCHANG on February 21, 2007 at 19:52:13:

Hey Kurt,

Thanks again for the thoughtful reply. I'm enjoying the back and forth, and appreciate you taking the time with a newbie. Your reasoning seems valid to me--my sympathies. But--doubtless partially due to my inexperience--I want to try a slightly different variation.

In particular, I take your point that any paper cone speaker (or any speaker, I imagine) will have breakup modes, and that one brand's frequency response curve might be smoother than another brand's simply due to measurement techniques.

Granted that, my preference is to err towards smooth rather than crisp. Add to that I will be driving my FR with a SET amp, which has a relatively high output impedence, aka a very low damping factor. Paul Joppa asserts that this causes an SET's output to decrease less than a high-damping amp's when a FR driver's load impedence rises in the bass and treble--boosting them. So I'm thinking the lower-treble speaker might work better with an SET. Any thoughts?

Of course I had my mind set on the FX120, and after a while I might bring myself around. Half the price is a nice incentive, and I will have equalization available. Any thoughts on the 3" Jordans? The specs and buzz look good.

I'm also leaning toward an active crossover for three reasons--I want to hear if it sounds better than a passive, I want ease of experimentation, and I want to unburden my FR's SET amp.

Regarding that--is your dislike of fourth-order crossovers due to their inherent, ideal qualities, or the fact that implementing them with analog/passive components mucks up the signal? My understanding is very shallow here, but I'm under the impression that their theoretical qualities are excellent.

So many thoughts, so many variables. My strategy is to try to keep an open mind. And, as Einstein said "Things should be made as simple as possible, but no simpler."

Thanks again for your experiences and thoughts.

George

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