Fullrangedriver Forum

Keep us posted, Dave. I've got my 108 EZ's (glad I kept 'em) and some nicely broken 126's. Dying to make some(more) sawdust.
  Thanks for your efforts!                                    Don

doorman wrote:

Keep us posted, Dave.

I got a nice note from Ed. I've updated the page to reflect his questions.

Chris is putting final assembly of alpha 1.2.1 tomorrow... i'll try to get a pic before the last side goes on.

dave

Under construction pictures of the alpha 1.2.1 are up

http://www.planet10-hifi.com/alpha121.html

dave

ghpicard wrote:

A pity the H108 is not out in the world yet...

I'm awaiting the A108.

dave

Horns don't scale. For the 206es-r, you'd have to start fresh. The general folding is certainly reuseable.

dave

Dave... wouldn't a radiused mouth (ala Austin) help if ppl were to use the additional reflector as Ron does in the backfiring Austins ? This to allow a better backwave support.
It would add some build complexity, but not as much as angles other than 90 degrees, and if you are thinking in a flatpack offer, then no complexity at all...

Gastón

ghpicard wrote:

Dave... wouldn't a radiused mouth (ala Austin) help if ppl were to use the additional reflector as Ron does in the backfiring Austins ? This to allow a better backwave support.
It would add some build complexity, but not as much as angles other than 90 degrees, and if you are thinking in a flatpack offer, then no complexity at all...

Gastón

I think Ron has already been asked to take a quick look at that  - but even prior to that we need to try a set of the reflector geometry he so kindly sketched up for Ed Schilling some time back.

Godzilla - I'm not sure I'd hold my breath counting on any revolutionary enclosure rework from Ed (aside from "the twins").  Along with all the current "Horn" owners, I think he's pretty happy with exactly how they sound - particularly with the 126E - and notwithstanding the meaningless published measurements by Stereophile, most reviewers have been equally captivated.

Of course on top of the undeniable downright cuteness of the speaker, part of the entrancement could be Ed's own affable charm and graciousness - anyone who has spent an hour or 2 on the phone with him, or corresponded by e-mail know exactly what I'm talking about.   

Ed - Frankie says 'hey' back

Godzilla wrote:

Too many darn speakers to build!
Ed must be annoyed.

No. He had some concerns about some of the wording on the page, but i fixed that. The part of the part of the market that builds their own doesn't interesct very much with those that buy. The Frugel-Horn will help legitamize the market segment, and it should actually end up as free advertizing for Ed (at least until the Frugel-Horn has developed way past the EdHorn and someone does a compare -- but i'd have nothing against Ed co-opting the design if it gets that good.

dave

Should have the completed H108 finished this week. My whole goal was to perserve the excellent mids of the 108, but provide more directivity. Unless its a perfectly designed (ie circular) FH then there is distortion in the wave front. I find that waveguides can efficently provide control of the wave shape, they really provide no actual boost.
The H108 will require aiming the horns directly at the listening position for optitum performance, but should provide a greater imaging as well as a great deal more " air" than a flush face baffle. I have found that the less reflected signal(side wall) provides a greater undistorted signal to arrive at the listening position due to the lessining of a secondary signal(less in amplitude) arriving at a greater time point. This reduces the width of the recieved signal which gives a closer match to the input signal.
Simmed LF TL response is around 52 hz with horn action rolling in at 87 hz and rolling off at 284 hz, at which point the upper waveguide takes over in place of a wider baffle. The wave form leaving the waveguide is a vertical elliptical shape which means a more narrow sweet spot, but very little side wall reflections. Optitum listening position is 8-10' from the vertical plane of the waveguide.
ron

Last edited by ron (2006-05-02 19:48:34)

More pictures up, and a few comments on a comparison of the alpha build to the modified B-Horn reference.

dave

No Ferg old bud, i havent recieved any. My addy is roncla at cebridge.net.

Even when launching the wave to a more restricted solid angle, due to the restricted dispersion
No its more of a lack of TL action and a flare rate that is not the best for greater partical transfer. IOW its just not a horn. Now i can see a tiny boost (maybe 1 db) but its truly not horn action. The benefit is greater directivity and more control over the wave. Its more of a collimator than a horn.
ron

JohninCR wrote:

ron wrote:

...Its more of a collimator than a horn.
ron

Yes but the Fostex designs seem to be just a series of larger collimators.

To me they look like a series of short (1/4 wave) pipes of ascending diameters (and consequently lower Q's)
the mouth chamber is tuned to the mouth cutoff
(

Last edited by hitsware (2006-05-03 23:17:38)