DIYAPASON-L Digest #812 - Monday, May 19, 2003
Pressure and voicing
  by "Robert W. Taylor" <>
Re: Pressure and voicing
  by "Larry Chace" <>
new pipes
  by "Kelvin Smith" <>

(back) Subject: Pressure and voicing From: "Robert W. Taylor" <> Date: Sun, 18 May 2003 21:27:13 -0500   In trying to assemble my organ, I have discovered that two ranks may have been switched. I have an 8' Vox on the Swell and another 8' Vox on the Echo. The initial specification for the organ was for 4" on everything except the Echo, which was 3 1/2".   The CC of each Vox rank has scribed on it, the pressure, either 3 1/2" or 4". It appears as if the previous owner did swap the ranks. If these ranks are swapped, what are the ramifications? Other than the CC pipes, there is no way to identify which pipe belongs on the Swell and which pipe belongs on the Echo. We carefully marked the trays on removal, but now I am not sure the ranks were correct when we bought the organ.   One rank of Vox was much cleaner, with no visible dirt. The Echo chest = had been rebuilt in the last ten years. The other rank of Vox was quite dirty on the top, and matched the dirt accumulation on the adjacent Oboe rank.   In my installation, the main organ will be on 4" and the Echo on 3 1/2" as per the original specification.   Any comments?   Bob Taylor      
(back) Subject: Re: Pressure and voicing From: "Larry Chace" <> Date: Mon, 19 May 2003 10:37:33 -0400   Bob Taylor asked about his two Vox Humana ranks and how to tell them = apart. The simplest answer might be that there is "no" difference at all, except that the Swell rank was played on slightly higher pressure! In general, the lower-pressure rank would have been softer, might have been of a smaller scale, and might have less curve on its tongue. If the corresponding pipes appear identical, then it is possible that the = pressure is the only difference.   It is also possible to try corresponding pipes on the two pressures and = see which one seems "happier" on which pressure.   I seem to recall a comment (perhaps from Nelson Barden) that Aeolian sometimes used *higher* pressures for their Echo divisions, at least in cases where the Echo had to speak from around 4 corners and down 2 staircases, so it is possible that the ranks were switched a long time ago (and in a distant galaxy?).   When first reading Bob's note, I was surprised that there was no "rank number" on the pipes, since Aeolian seems to have usually done that. (The numbers might be the rank's position from one side of the chest, or they might be some other numbers, probably keyed to notations on the = installer's blueprints.) A quick check of my Aeolian Trumpet, however, showed no such numbers, although the other Aeolian ranks in the barn do have them.   Larry Chace        
(back) Subject: new pipes From: "Kelvin Smith" <> Date: Mon, 19 May 2003 13:22:26 -0600   Hi,   I have not exactly been zooming along with work on my residence organ lately. I'm in the process of building a new windchest for my choir division, which has suffered delays and distractions. I also replaced my 4 and 2' great diapason, which was a big pain, because of the = unprofessional, (although expensive) shipping job. They are sounding nice now, however, = and my estimations of my skill in pipe repair went up a notch or so.   But I am going to go pick up a new rank of pipes for my organ in a couple weeks. It is a 1957 Reuter 16' Principal, which I will use for the facade. When I first put the organ together a few years ago I used a couple of 8' Diapasons for the facade as a temporary measure, always intending to put a 16' there eventually. It will be available on the great and pedal at 16' pitch. It was originally a manual rank and is smaller in scale and should make a good contrasting stop to the 16' wood diapason I have already.   Kelvin