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Questions tagged [valves]

For questions related to the mechanisms in brass and other instruments that change the length of tubing within the instrument and therefore alter the pitch.

12
votes
3answers
784 views

Trumpet valves, lengths, and pitch

I would like to know a bit more about how the valves of trumpets (and other brass instruments) work than is here: Trumpet at Wikipedia. I am ignoring issues such as it being a transposing instrument. ...
4
votes
1answer
399 views

Bach Stradivarius LT42 restoration

I got a Bach LT42 with quart valve for few Euros, worth about € 1000,-. Now the trombone was built in the 1980s, so its material is brilliant, the sound is really great! The caveat: It’s in quite ...
2
votes
1answer
1k views

What is a buffered effects loop in a guitar amp?

I've just purchased an Orange Rocker 15 combo valve guitar amp and one of its features is a valve driven effects loop also referred to as a buffered effects loop. What does this actually mean? I'...
4
votes
2answers
1k views

What can I do to address valves getting stuck on a trumpet?

I have a problem with a low-end trumpet ($100 range, so you get what you paid for). The valves occasionally get stuck-ish, and won't depress fully after being pressed (they stop at around ~2/3 or 3/4 ...
3
votes
1answer
298 views

Preamp Valve gone in 'hissing' amp?

Roughly 3 years ago, I purchased a VHT Special 6 Ultra (Combo) Valve Amp. It has recently been 'hissing' (not sure if this is the correct description), and this noise increases with higher wattage and ...
0
votes
1answer
445 views

How should tuba valve springs of different size be reassembled?

I finished cleaning my tuba, but I'm not sure where the springs go. I know they go into the valve but they are all different sizes ranging from largest to smallest. Does it matter what order they are ...
5
votes
2answers
527 views

How to disassemble a tuba for cleaning

When I remove the valves of a piston tuba, do I remove the spring also?
10
votes
2answers
456 views

Why isn't there a reed aerophone with valves?

Most reed instruments instruments have keys or finger holes. Most brass instruments have valves. There are brass instruments with keys, though, like the (fairly unsuccessful) keyed bugle. I can find ...
8
votes
3answers
1k views

Why do trumpet valves shift down and not up?

I understand how trumpets work - valves open to force the air through crooks, which lengthens the pathway the air must travel, thus decreasing the resonant frequency. The question is, why are ...