207E in BLH?

[freddi]

FWIW 207 sims (with AJ) on low end "about like" other drivers in a 2.5M pipehorn.

whats the real BLH sonic story of 207E vs 206, A-N super 8, etc?

http://img89.imageshack.us/img89/4920/207kslot1hd7.jpg

[seanzozo]

A more oprimized design might provide a better comparison.
Something like Ron's Dallas.

Sean

[freddi]

I imagine Bill Woods piddled a bit with this design - should be ok for simple build

http://img177.imageshack.us/img177/4921/al4bep6.gif

http://img427.imageshack.us/img427/170/rcahur7.jpg

[seanzozo]

I'm sure Bill did, he used a 208EZ if IIRC.

I was suggesting that if you wanted to see the differences between a 206 and 207 it might be good to look at a horn that was optimized specifically for a 206 through extensive modelling. Ron's fits the bill. I wasn't suggesting that you had to build it, just that sims from it might be more enlightening.

Sean

[chrisb]

Also worth considering a design more suited to the 207's T/S parameters:

http://www.frugal-horn.com/metronome-table.html


or Bruce / Sachiko

http://www.frugal-horn.com/spawn.html

or Godzilla's BIB

http://www.zillaspeak.com/bib-howtobuild.asp


the math is in on all of these designs, with more than a few builds completed.

[freddi]

hi Sean & Chrisb - there's no drivers yet so am "window-shopping" plus only familiar with a few front-load horns -- no BL pipehorn yet, so sounds and tradeoffs will be new territory and colorations unknown.

do BIB punch harder than simulations indicate? cone excursion follows throat Z and predicted power handling on sim can be very low vs FR x-max figures.

206E BLH vs 206E & 207E 20l sealed box
http://img114.imageshack.us/img114/1...lhvsboxwa9.png

206E Viech vs big vent reflex with 15" coax about the same bulk
http://img53.imageshack.us/img53/801...vsviechdc0.jpg

206E in 2.5M BLH vs BIB its same bulk
http://img114.imageshack.us/img114/7...sbib206hx7.jpg

[chrisb]

Freddi, at least 2 of the huge advantages of the Metronome and BIB designs are the lower cost of materials and vastly less complicated build over any (folded) BLH.

Having built a few simple and more elaborate cabinets, I'd wager a pair of BIB's could be assembled in less than 2 hours (fancy finishing details aside)


As for reconciling the math vs real world performance of the various designs you referenced, Scott and Jeff would be the best to answer that one. Ultimately, I think that room / system interface (dare the word "synergy" be used? ), and your personal qualifications of "punch" will be the arbiters.

I know of at least one (now slightly deaf ) speaker builder who will politely tolerate our baby systems, but for whom the reference is nothing smaller than VOT size horns

hey Cal, howzit goin?

I said, hey Cal ........

[Scottmoose]

Well, no FR system is ever going to do dynamics & punch like a good multiway. Period. They can sometimes get close to a lot -until a VOTT comes along (also my dream speaker) and spoils the party.

Sticking with FR systems, pipe horns like the BIB will clobber any FR MLTL or BR you'll come across on the dynamic & scale etc front, though a more complex BLH will beat them on that score. As ever, it's a trade-off against simplicity of build and usually somewhat more extension. They do sound very natural and have a lot of scale -TC wasn't kidding when he said his originals sounded like 15in paper cone from something more expensive: they do. But they're not perfect; they have as many flaws as anything else. They're just simple pipe-horns remember. What they do, they do very well though, and they can be very addictive.