And Now For Something REALLY BIG

[RockLeeEV]

Originally Posted by Pano

I think passive crossovers sound a bit more natural than active, but that just my taste. I ran my system active for a long time.

Why do you think this would be the case?

series DCR raising Q at system resonance?

[buzzforb]

Bi radial vs iwata vs jmlc. Any opinions?

[tinitus]

Originally Posted by buzzforb

I will begetting the hf144 or 204. Both push resonant impedance down low and will give the option of crossing low or high,depending on what you want handle vocal range.

yes, tempting isnt it
but not so easy at all
for one, bigger drivers are usually built for higher power handling, and less aimed lower frequency
for hifi you dont need the huge powerhandling, and thus its possible to cross lower
but dont forget you need a much bigger waveguide
and its getting a lot more expencive

another problem could the transition to a big woofer
two drivers with totally different sound character
cannot be easy I guess
is it worth it ? I dont know, maybe it is
but surely, just crossing low is not all there is to it

[buzzforb]

Mating issues are there regardless. Only get better by crssing to 6-8" mid. None of those go far and niw you have multiple xo points. Ill try two way and go from there. So many people prefer bigger throat sound over 1"

[tinitus]

Originally Posted by buzzforb

So many people prefer bigger throat sound over 1"

how low do you expect to cross it ?
only interested, not argueing

[JRKO]

looking at the freq. response for the HF144 I'd guess you could cross at 600-700hz as long as you dont bash it too hard - its still producing 105db/w/m for 1w at 500hz so you'd barely need to tickle it to damage your hearing

[buzzforb]

If I go Iwata, I may try 500-600. Cant tell until it begins. found a couple interesting sites i case you are interested.

Are Iwata horns that good?
Yuichi's Audio Lab.
L'ébéniste audiophile
Iwata horn - Audio Voice Acoustics

Second one is the most interesting with more explanations. I really like the finned versions. I could pull this off as I am a bit of a woodwroker, but i still have interest inthe LeCleach versions as well.

[tinitus]

Originally Posted by JRKO

looking at the freq. response for the HF144........

nice looking driver, but response seems a bit bumpy
but maybe thats normal, i dont know
also most of the big waveguides appear to have a bit rough upper frequency
I wouldnt mind trying it myself tho
too risky for me, but if it sound like the HF100, Im in

Originally Posted by buzzforb

found a couple interesting sites i case you are interested.

wow, thats cool
I didnt know my own waveguide was a Iwata profile
or at least a 'look alike'
no wonder it sounds so good

[Pano]

Originally Posted by RockLeeEV

Why do you think this would be the case?
series DCR raising Q at system resonance?

Q could be part of it, of course. I really don't know "why", it just a subjective impression that I've gotten on a lot of different systems. Active can sound a bit hyper-realistic to me. So detailed it sounds better than real. Like peering at the music thru a microscope. Very impressive, to be sure, but a good passive crossovers seem more organic, more natural to my ears. That sounds like pure woo-woo, I know - but that's how I hear it!

(Active subs are a different matter).

[JRKO]

Originally Posted by tinitus

if it sound like the HF100, Im in

Where do you cross the HF100 in? They say it should be 2Khz but it dips nicely to 1khz at 100db/w/m - do you think you could use that to mate nicely with the 15FH100 at 1khz?