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Stefano,

I do not have any strong objection regarding to what ALE do. Bent bass horn are more evil then straight horn but considering the small throat of the ALE drivers  and their desire to make it to work low the length of the horn become too high to keep it straight. So, if one does not want to get any higher frequencies out of horn then I do not see that bents are the problems, if ten are made properly. Under the properly made bents I imply the bend when the cross-section of the profile does not change across the bend. The first bass horn at your page, with 9 degree horn I would not recognize as interesting and I do not like it. The third picture, the view from behind, is the example of the proper bends, at least from how I can judge from outside. This system would need a complimentary LF section as I preams the bass hot will effectively go down to let say 50Hz in closed-bottom mode.

If close my main bitching from would be about the fact that none of those Japanese companies, GOTO, ALE and any other make no efforts for time-aliment I do not mean the bass horns).  I need to note that time-aliment is not some kind of panacea of mine. I did not learn it from book sand I never was told/taught about time-aliment by anybody. I absolutely single-handedly discovered it and developed all necessary for myself evidences about the time-aliment’s topmost importance in context of auditable experiences. If you read my Macondo pages:

http://www.goodsoundclub.com/MacondoAcousticSystem.aspx

… then the time-aliment “invention” was during my “discovery period” that stats from the paragraph #4.

Well, I do not have a need to convince you in importance of time-aliment and explain what and how to evaluate the time-aliment benefits. We had a number of conversations before about the subject. What I do suggest is to think associatively about the subject.

Let visualize an internal combustion engine, let say multi-cylinder four-stroke engine.  The cylinder’s valves must be opens and closed once every other revolution of the crankshaft and in the very specific crankshaft position. There are different ways of synchronization of crankshaft that drive cylinder and the camshafts that driver intake and outtake valves. I am not knowledgeable in engines but at the level of visualization from 5.000 feet it would do. So, what have multi-cylinder engine and each cylinder needs to have valves open and close and the spark applied at the very define position of the cylinder compression. If all 4, 6 or 8 cylinders work in unison, creating on the crankshaft identical thrust then the engine does fine.  Now pretend that we have an engine where the in the cylinder #1 the ignition is applied not at the time when the combustible mixture is compressed and in the cylinder #2 ignition applied with open output valve.  The engine still might be running and someone would sit in their Lamborghini and demonstrate to you how great this automobile is and how experience he is as a driver. Still, knowing that two cylinders are limping in their time actions you truly question if the person might be such a great driver that if he driver the badly performing Lamborghini and has no feeling that anything is wrong.

The very same is with playback systems. There is nothing wrong with having drivers in not time-aligned position. Just for the people who know how the things work and how the time-alignment “sound” it is very self-evident that the playback doe not sound as good as they might be.  There are huge amount of problems deriving from time-misalignment, particularly in velocity-centric systems as horns are. So, when people show to me the exotic drivers organized in time-misaligned arrangement, I feel very mach as somebody shows me a Lamborghini with two dead cylinders.  It is not necessary indicate that the drivers are bad or the Lamborghini is bad car or has bad engine. It however indicates the audio reference points of the people who design the playback system or the driving reference points of the car driver and how much this driver truly needs a car of this level

To listen a horn installation with time-misaligned channels to me is like tasting a fancy cooked Filet Mignon in duty restroom.  It is not necessary indicate that the steak was not cooked well but ingestion of food is not just the objective of cooking but to have a pleasant quality time during the entire eating ceremony….

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