Author Topic: Cranleigh School Mander organ temperament alterations  (Read 12049 times)

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David Pinnegar

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Re: Cranleigh School Mander organ temperament alterations
« Reply #20 on: July 05, 2011, 03:43:08 PM »
Hi!

An expert friend in discussion this morning affirmed that in this case the right decision has most certainly been achieved.

Retuning an instrument of Mander's quality is no small task nor can be undertaken lightly with any real liklihood of reversibility in such circumstances. The modern revival of traditional methods has caused the easy tuning system of sliders on pipes to be considered second-rate - which they are for, as easily as they can be tapped for tuning, they can slip on the pipe resulting in the pipe going out of tune just as easily. Instead, the best of organs, and in particular in the perfection of modern instruments, pipes are cut to size to their calculated length for the temperament concerned and cut to length on voicing  . . . and fine tuned in situ with cones forcing the end of the pipe inwards or splaying it outwards. This is a pretty permanent tuning technique and offers maximum stability.

Furthermore at the recent talk to teh Surrey Organists' Association, Matthew Copley explained how the tone of reeds is affected by the length of resonator coupled to the tuned pitch of the pipe. The resonator is literally cut to length with a knife on voicing. This means that retuning means a change in tone or alteration of the length of the resonator. As in Kellner C is 8 cents sharp if one tunes on A rather than C, the resonators will be too short for equal temperament. A change in temperament therefore is not a temporary alteration.

The decision of the delay by the year before undertaking the change is so very musicologically important and hopefully the school might be sympathetic to visiting organists and local Orginists Associations . . . as well as trying out in particular early and mid 19th century repertoire for concerts and recordings.

The progress through the opinions discussed on this thread is also testimony to the value of full, open and frank discussion of all opinions and levels of assumption and expertise. It's through good discussion that people find harmony, ideas are more widely understood and the best decisions are reached.

Best wishes

David P

David Pinnegar, BSc ARCS

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Re: Cranleigh School Mander organ temperament alterations
« Reply #21 on: July 06, 2011, 12:02:07 PM »
Voix Cynique messaged privately about a number of organs in unequal temperaments in the south of England - some in Meantone, others in Werkmeister, both stronger than Kellner - so this instrument remaining in Kellner at least for a while is a most important musicological opportunity and it's helpful to be compared to the more strongly coloured instruments. It's hoped therefore that Voix Cynique will post here his list of other instruments for comparison.


It may be that his post has been lost in error . . .


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Re: Cranleigh School Mander organ temperament alterations
« Reply #22 on: July 12, 2012, 12:43:17 PM »
We have heard today that this instrument has sadly been converted to Equal Temperament.

This thread may therefore be moved to the section for Organ Gravestones and Memorial Plaques

Best wishes

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