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In the Forum: Horn-Loaded Speakers
In the Thread: Driver Alignment, and Where to Draw the Line
Post Subject: Vertical tilt adjustment for hornsPosted by Romy the Cat on: 5/27/2007

 jessie.dazzle wrote:
Romy's comments on "axial rotation" of the horns (meaning in this case, angling the horns) has me thinking. I had planned to build in a vertical tilt adjustment for horns located near the floor and ceiling...  I would be interested in hearing more if anyone has thoughts on this subject.

Do not listen Romy, make you own very simple experiment and then make your own mind. Take two horn channels, low-pass and high-pas them at 6K for instance and drive them with 6K sinewave. When you time alight the driver you have well measurable gain. Any minute angling of axes of any of two drivers you will have change of the summarizing gain. Then set the driver with one having 1-2cm delay and begin to angel them. You will see that aliment will be changing and you will be able to changing the delay and angel to find the look-like perfect time alignment. However, here what the GOTO, Cessaro and the rest of the guys failed to admit: the angled aliment will work probably ONLY for a VERY specific listening distance. The parallel horns however do not care about listening distance. BTW, the effect is audible at HF and for bass horn that do not go very high the “parallel axis paranoia” might be neglected.

BTW, a few years ago the Moron Steve Rochlin wrote a review in Ultimate Audio, suggesting tilting the AG horns. I had replyed to it and it was surprisingly not vandalized within the AA's drain…

http://db.audioasylum.com/cgi/m.mpl?forum=hug&n=6349

 jessie.dazzle wrote:
In any case, in this house the 45Hz Mid-Bass horns will have to be angled down from above ; their drivers will not be aligned with the rest of the system... this may eventually be a reason to move to a new house.

if the 45Hz Mid-Bass horn do not go over 300Hz then, I think, could be annealed quite dramatically.

 jessie.dazzle wrote:
Why have the French so embraced DSP technology? Simple ; if you had a French mother, you too would likely embrace DSP technology.

I do not think that you are right. French audio people like anyone else walk in packs and eat whatever is given to them. In the end of the 90s French folks become to be stressed by DSP filtration propaganda when your French Jean-Michel Le Cleac'h fell in love with DSP and begun to staff this idea into the minds of the French “horny” public. Jean-Michel is experienced guy but he became the Behringer or BSS distributor (or dealer) and then whatever he begun to talk about the DSP subject stopped to be appealing. I think THAT made many French to look at DSP. Ironically I see no problems when people try to resolve the delay problems with DSP but they also do filters by DSP and THAT it horrible…. BTW, I have a local guy who had horrible sounds for years running his 3 channels with DSP filters and multi-amping.  Recently he got Pioneer D-23 crossover, a cheap and VERY consumer-level but very flexible and friendly – a perfect piece for prototypes. His sound still is not good but MUCH better then used to be. When he first time turned his system and I did not know that he use a new crossover, I immediately asked him what happen with his playback that it is suddenly become to sound friendlier.

Rgs,
Romy the Cat

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