TromboneChat

I recently acquired a Yamaha trombone slide without the bell. That means I do not have the model or slide number. I'm hoping for some help identifying the slide and leadpipes?

It appears to have the following specs:

• Small bore--most likely .508
• Nickel silver outer slide tubes with no oversleeves
• Yellow brass crook
• Yamaha logo and "M2" on the mouthpiece receiver
• Removable screw in leadpipes

It came with three leadpipes that I also know nothing about. they are marked:

• 1
• M2
• M5

Thanks!

If it is a .508, I would have a guess and say it could be a 691 slide, precursor to the current 891z. I’m not entirely sure whether that came with 3 leadpipes or a fixed pipe though. If you posted some photos, some others may be able to judge the era based on the ferrules and bracing.

We have a winner! That is absolutely what it is. Thank you!!!

Now to figure out what Yamaha's intent is for the three different leadpipes.

M2 and M5:
These specific leadpipe models are designed to offer different characteristics. The M2 likely provides a specific response and tone, while the M5 offers a different set of qualities. These differences are achieved through variations in taper (how the leadpipe gradually widens) and the materials used.

got to love the A.I. answer.

My 691 pipes are marked 1, 2, an 3? No M's, and no 5?

My since long sold 695 had removable lead pipes, and I think I remember that at least one of those were marked with an "M".

I've decided that my slide is a 691/.508 bore.

Any impressions or knowledge of what Yamaha intended with each leadpipe? So far I get the following:

• 1 = "most tight"
• 2 = "in the middle"
• 3 = "most open"
• 5 = no one seems to have seen before

What does that mean for actual playing characteristics? So far I find the #1 kind of dull and not as responsive in the staff, but I'm still really getting to know the horn.