•I recently saw some reed pipes, probably Vox, that had graduated boots for resonators, as opposed to the tops of the pipe. I have pictures of these pipes which are most unusual; email me if you would like to see the pictures. The longest bass was about 3 feet and the shortest was about 8 inches. Th...

•Robert Linnstaedt wrote: "I hope Professor Liljencrants in his next discussion can include a word about cylindrical vs. conical resonators. I have wondered at the 'why' behind their special characteristics and how one causes the nodes to aggregate at one end only." I'm not the good professor, but I...

•Bill Chapman wrote: > I recently saw some reed pipes, probably Vox, that had graduated > boots for resonators, as opposed to the tops of the pipe. ... The > longest bass was about 3 feet and the shortest was about 8 inches. > The tops are almost all the same size. They were made by Wicks ... These ...

•John Nolte told the highly technical reason for extended boots for Vox, Musette, and other fractional length resonator reed pipes. To put all his very well explained technical words into your more basic everyday organ guy talk: the reed boot is longer because the reed doesn't care what resonator it...

•[ Continuing the topic which began in 000403 MMD, "Free Reeds [ and Beating Reeds", by Prof. Johan. -- Robbie The reason you use reed pipes at all is that they give louder sound and have higher and stronger harmonics as compared to flue pipes. But they are more difficult to fabricate and handle. In...

•Dr. Liljencrants, thanks for your excellent article. Reeds are a complex subject. I now understand them much better. I was looking at some spectrum envelopes of instruments on my analyzer tonight when it suddenly dawned on me how we can tell instrument sounds apart. I was looking at an oboe WAV fil...

•Conventional belief is that an acoustic resonator will amplify sound at its resonance frequency. Lots of applications tend to lead your thoughts that way, but in general this is a _misconception_ : A free resonator in a sound field _eats_ energy! The classical example is the Helmholtz resonator, or...

•I have been working with a brass instrument maker to make bent brass resonators. The measurements were taken from a Wurlitzer 148 organ. The 148 has 15 trumpets, two notes lower than the 13 notes of a 125. Photos of the two sets are at http://i219.photobucket.com/albums/cc278/billklinger/15noteset...

•My statement in MMD 000418 ("Reeds and Resonators in Organ Pipes"): > It rather goes in a sequence of half-periods -- when trying to enter > the 'negative' half-period it bangs into the shallot and immediately > bounces back to start another 'positive' half-period. is apparently refuted by John Pag...

•[ Mark Buckland wrote in 211114 MMDigest: > An 11" Polyphon comb having its lead resonators replaced was > knocked off the workbench promptly shearing off 8 teeth. How heartbreaking! Did you need an upper or lower comb? I have a 'perfect' upper off a Regina (has shaped teeth). Depending on the damp...

•I have regret in detailing an unfortunate accident! An 11" Polyphon comb having its lead resonators replaced was knocked off the workbench promptly shearing off 8 teeth. It is not economical to have the teeth replaced by a professional so I am hoping that someone, somewhere, has a comb that is surp...

Howdy, Fritz Gellerman, and welcome aboard. I share your interest in xylophones and the "melodic percussion" instruments. The "cut up" on the back side of bar resonators serves these purposes: 1. To tune the fundamental (by grinding the pitch lower). 2. To help bring the most prominent overtone into...

With all of this interest in the RCA tones, does anyone know the origin or significance of a three note mini instrument that has metal bars and tubular metal resonators. The bars are brown with NBC engraved and the resonator is brown wrinkle finish paint. Sound quality seems to be inferrior to what ...

•First off, I called my thingy a VibraHarp, and discovered it's called "chord," instead. A VibraChord. Robbie was wondering; >[ Does your Vibraharp have the long resonators and rotating throttles, >[ or is it more like the orchestral cabinet Celesta (which sinply plays >[ "plink, plink!" from a pian...

•Hi All, Here are some interesting sites: http://w1.430.telia.com/~u43000075/Orgelb.html [Web site of Gisli Olsen, Sweden] Gentleman building a grind organ with PVC pipe resonators and wood for the speaking parts. There is some interesting information on the unit valve blocks he built. http://windwo...

•Lloyd Osmundson asked if there is a difference in instruments between the Nelson-Wiggen 4X and the 5X (010203 MMDigest). The 4X has a 28-note xylophone; the 5X has a 20-note marimba (with tubular resonators) that are pitched exactly with the piano notes they are teed into. Both have expression capa...

•Yes, Chrysoglotts are found on theatre organs. The ones I have seen are all single-stroke instruments with metal bars and long resonators. The beaters are either round balls covered with felt or a felt piano hammer types. I usually describe the sound as being that of a set of Vibes without the moto...

•Well, I found out something about Chrysoglott I didn't know. That basically, they are played with soft hammers, have resonators, and tremulant. Mine, obviously, is not one of those, although the bars might be from a Chrysoglott. I doubt it. I suspect we'd call this model a damped metal bar xylophon...

•I can not imagine a 125 restoration costing $17k, plus the value of a Wurlitzer 125 band organ! Is the case only useful for patterns? Are the brass resonators missing or crushed? Send me pictures and description, and I will provide a second estimate for professional restoration of your 125. I have ...

•I am interested in finding someone with a Wurlitzer 105 or other Wurli band organ that is willing to help me out. I need to know what kind of shallot and reed to use on a set of the trumpets. The ones in particular are the ones with wooden resonators and wooden round boots. I need to know the diame...