GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Horn-Loaded Speakers
In the Thread: Battling stupid Horn Criticism as a concept

Post Subject: Re: If To Look Deeper... and “understanding”Posted by Axel on: 8/5/2009

Romy,
you did not disappoint my expectation in your reply. Who can argue with the take: "bugger off and do some home-work"?
On the other hand, when looking through that "Knowledge tree TM" it's more of a "forest" as far as horns are concerned. So it's a bit like "not seeing the trees for the forest". Take this as the back ground to my “tell me what to do” question...

So, I guess it'll be back to some trial and error as with all the other stuff we been up to.
So let me try it like this ---- your answers might, or might be not buried in the horn "knowledge forest".

1) What is your experience between different materials used for an upper-bass-horn (i.e. bass horn = steel armoured concrete...)?
Can it be related to what one can hear with box speakers, e.g. propensity to ~ 300Hz res. frequency with MDF, and other 'similar' material related signatures of the materials used?

2) Since the horn throat may be smaller, I.E. membrane diameter of the driver only (excluding surround), the surround material (rubber, foam, textile, etc.) would impart (far?) less of it's signature on the sound, or is your experience suggesting otherwise?

3) Have you found Kapton or fibre-glass voice-coil formers with alu-voice-coil wire the preferred material (due to reduced membrane/drive weight) or is copper wire showing a more preferred signature (warmer?), because all is multiple times acoustically amplified by the horn?

4) Where is the horn's mass in your experience best located, heavier, thicker (damped!) horn, or e.g. cast-iron (heavy and self damped) type rear chamber with lighter horn materials in front?

5) The driver(s) you used, seem out of production by now, have you any other 8" drivers found suitable?

6) Could you find an 'efficient' step-by-step process in deriving at horn profile(s) by some predetermined process of knowledge-based elimination of unsuitable profiles?

If your answers are buried in the "horn knowledge forest" you will tell me I guess, and I shall endeavour to do some more digging then...

Rerurn to Romy the Cat's Site