I learn something new every day..
The website I provided a link to gives reasons and examples.Brass may add unwanted mechanical resonances from the brass tube itself. If you hit a brass tube with a hammer it would ring to some extent. Lead would only make a dull thud when hit. I think the only resonance required would be the air column in the pipe. (This is only a theory as I know nothing about organ pipes..)
so your saying that the company in your link is the end all of organ pipes? The link I gave earlier, to a company that also is world known seems to disagree.Again, the link I provided pretty well explains it.
Or seems to say pretty much the same - that organ pipes are made of different materials for different reasons.so your saying that the company in your link is the end all of organ pipes? The link I gave earlier, to a company that also is world known seems to disagree.
"Our pipe shop manufactures every flue and reed stop currently used in the organ industry. Besides the standard zinc and spotted metal, our pipes can be supplied in flamed, polished, or brushed copper, polished brass, polished tin, frosted tin, aluminum, and a high lead alloy." From their site under Products. https://www.arschopp.com/products/