08-20-2018 Post does not mapped to Knowledge Tree martinshorn Germany Posts 114 Joined on 04-14-2017 Post #: 121 Post ID: 25043 Reply to: 25042 Upper vs lower range benefits ? Hi Romy.    Confused by your statement i flipped a few pages back and just noticed you changed / corrected your opinion along the course. So you're back to white polyester?   I have 6 different dia's in my storage, all different surrounds, but did not compare any yet. Neither heard them playing further than up to 5k.  So im curious what to find. Sure, if the graph above is smoothened 1/6th Oct it does not show HF resonances.   However it indicates lot more power in the lower range, which could be interesting in a 75 or 150Hz Tractrix.  Of course with small mods in respect to backchamber + phaseplug + shimmer etc.  At the end, also the WE555 made huge xcursion with a metal surround, so it shouldnt be the showstopper.      Any latest opinions about the S2/3... fundamental performances?    cheers,  Josh

08-20-2018 Post does not mapped to Knowledge Tree Romy the Cat Boston, MA Posts 10,316 Joined on 05-28-2004 Post #: 122 Post ID: 25044 Reply to: 25043 The white suspension only. I do not think that I changed opinion about anything. I used the white suspension since my initial introduction to of S2 and never likes any other suspensions. I do use metal suspension with S3 driver in my Fundamental channel but is operates between 600 and 100Hz, hardly normal range for compression drivers. With this very limited range the metal suspended S3 does perfectly fine and I do not see a need to waste S2 driver with proper diaphragm in there. Anyhow, my own practice has nothing to do with my thoughts on the drivers. I do feel that S2 with plastic cone is the only good driver in Vitavox compressions line and what I personally use is kind of irrelevant. "I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche

08-20-2018 Post does not mapped to Knowledge Tree martinshorn Germany Posts 114 Joined on 04-14-2017 Post #: 123 Post ID: 25045 Reply to: 25044 Maybe i confused smth Hi Romy  I remember somewhere deep in the forum it was said, with a proper loading (cant recall what u did, feedback, or output resistance etc.. on the amp) you reached a point where the metal resonance got tamed and played better than the plastic.  Seems like it was a temporary thing, revoked later. Unfortunately i stoped at that point and till today thought the metal is to aim for  Problem of reading half...  cheer, josh

08-20-2018 Post does not mapped to Knowledge Tree Romy the Cat Boston, MA Posts 10,316 Joined on 05-28-2004 Post #: 124 Post ID: 25046 Reply to: 25045 A typical convention... Yes, I do feel that letting a diaphragm to idle less (means more loading) you can tame the code resonance, and the ringgy metal cone in particular but it might be done in context of worsening upper transients and over-damping the lower driver knee, a typical sound of the overly loading driver. In my application where the driver was used in a very narrow frequency range it is acceptable. Also, I was not going for overall better sound but I was trying to get out of my Fundamental channel the viola like “melancholic  filling sound”, if you know what I mean. So, I use the drivers in a way how I need and want it and as I said my personal practice should not be relevant to anybody. If we judge an absolute performance of the drivers and if we presume that behind a brand and model there is some presumed targeted quality of sound reproduction then Vitavox S2 should have white cone. It is as simple as this. If you use drivers to accomplish your own creative goals then all bets are off and you can use anything that fulfill you objective. "I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche