I think that the danger of coming to any instrument, particularly in a large building, is jumping to conclusions and not taking the time to find out how the organ works. Truro is one of the easiest instruments to play in the country - very little need for general pistons, as most things can be done on divisionals or by hand. In the four years that I spent playing the Truro Willis liturgically on a regular basis, I didn't once find an accompaniment or piece of organ music that didn't sound convicing - I have a large repertoire. Psalm accompaniments were always a joy, and registered most of the time by hand. Members of the congregation and choir often commented on the wide variety of colour found.
In answer to several criticisms made of the organ:
Choir organ - this isn't quite as quiet in the building as it seems to be at the console. Yes, the choir is at the back of the chamber, but the sound projects well into the nave. The Hohl Flote is of similar power to the Great Claribel for example.
Solo organ The inexperienced visitor to Truro will miss the solo being enclosed. The competent organist will soon realise that the flutes and reeds are voiced so well that they become expressive without aid of a mechanical device. An organist with initiative will realise that changing from the Solo Clarinet to the Choir Corno di Bassetto creates an effective diminuendo. The tonal qualities are different enough to merit having both reeds, but similar enough for effects such as this.
Variety of flute stops Personally, I've always found each flute on the organ to have a different character of its own. No two flutes sound exactly the same, and each is beautiful in its own right, working effectively with the building. I've never enjoyed improvising with different combinations of flutes and strings anywhere as much as Truro. There are two string stops on the swell, and two on the choir. An inventive and imaginative organist can provide many more tone colours than apparently appear on paper.
Tutti piston The tuba has never appeared on this - personally, I've never used a tutti piston in my life as far as I can remember.....
Loudness of the instrument The organ quite simply isn't too loud for the building. As with any instrument, the impact is less towards the back of the Nave, but I can assure all readers of this list that the full resources of the instrument are needed for capacity congregations. For a normal Sunday service, Great reeds are not overwhelming for the final verse of a big hymn. Personally, I'm rather fed up with constantly having to play on the tutti to lead small congregations singing at my Cathedral.
Pedal ophicleide Probably the loudest ophicleide around..... so enjoy it! Clever use of the instrument doesn't neccesitate a pedal reed sound until the Great reeds are drawn. Besides, shouldn't the pedal reed(s) balance the tutti?
Great reeds on choir This would have meant building new chests. Willis's chests speak far more reliably than the new Tuba chest. Perhaps a second Tuba would have been the answer, but this would have compromised the unaltered specification. At least the original action is in place for the Tuba to be moved back, should anyone wish to do so. Nothing has been lost. Lincoln does have a "Great reeds on Choir" transfer - I never remember using it.
This year's recital diary has taken me to many Cathedrals in the UK this year - I have to say that the highlight will still be Truro for me.