Interesting Link... Brass Compensating Systems Explained...

TheMusicMan

tMP Founder
Staff member
Hi,

Just read Charlie's earlier post here in this category - http://www.themouthpiece.com/viewtopic.php?t=692 - and it prompted me to do a little reading on Compensating Systems. Here's an interesting link I found straight away with Google.co.uk...

http://www.dwerden.com/eu-articles-comp.cfm

It doesn't cover 5-valve compensating systems but gives a good insight...

Charlie - do you have any other interesting links that explain this in more detail...?
 

Highams

Member
Most tuba euph / web pages carry an article the compensating system.
It is certainly the ultimate in tuning devices.

Back in the early years of brass instruments, all models, even cornets were offered with compensating valves !

Another idea was the Enharmonic system, with 2 sets of slides for different ranges of the instruments. Obviously the enormous weight problem put anyone off wrestling with tubas of that design.

The difference in intonation on small instruments of course, is minimal, enough just to have 1st. & 3rd. valve slide adjusters. By the time you get to euphoniums & tubas, the required amount of extra tubing needed to bring the notes down to pitch is about 4 inches !

Adding additional valves is still popular, even on Picolo trumpets & flugel horns, but mostly on the American & Continental stlye of rotary valve tubas.

Both Courtois & Couesnon of France offered a small C tuba (really a euphonium) with 6 piston valves.

http://www.tubaquartet.net/compens.htm

www.euph9.freeserve.co.uk
 

Straightmute

Active Member
Highams said:
The difference in intonation on small instruments of course, is minimal, enough just to have 1st. & 3rd. valve slide adjusters. By the time you get to euphoniums & tubas, the required amount of extra tubing needed to bring the notes down to pitch is about 4 inches !

Adding additional valves is still popular, even on Picolo trumpets & flugel horns, but mostly on the American & Continental stlye of rotary valve tubas.
But the fourth valve on my picc is really to extend the range downwards, to allow the A picc to play D trumpet parts for example. As you infer, on an instrument so small any intonation problems should be solved with the lip!

Highams said:
Both Courtois & Couesnon of France offered a small C tuba (really a euphonium) with 6 piston valves.
Is that the B sharp bass of the other thread???? (joke!) I've only ever seen large American C tubas.

D
 
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