Adjustable gap receivers

[bisontuba]

Matt Walters design... Allows to adjust the gap in the receiver/leadpipe to find your 'sweetspot--HIGHLY recommended!!!! Any horn with one plays better IMHO...
Mark

[Donn]

Where can I get one for my sousaphone? Conn, ca 1926.

[k001k47]

Does Matt only install them in shop? Dillon music is mighty far away, and if nobody's going to buy my CC, I might as well get this funky replacement receiver swapped.

[k001k47]

If my tuba were one that the receiver and mouthpipe are one-and-the-same (with an "overpart" that really is not a "receiver"), I would be quite hesitant to chop it off.

I really don't know what it is, but I'm assuming it's a replacement because Meinl Weston horns of this vintage ( I think) have the serial number stamped on it; mine has no such stamp.

Actually, I've always wanted an entirely new leadpipe.

[Donn]

It allows the small-end of your mouthpiece to be closer-to or farther-away-from the choke-point in the venturi created by a receiver and a mouthpiece. (With most *tuba* receivers/mouthpipes, there really is no "gap" per se...not even with most solder-on receivers.)

My experience is that this affects "feel" more than "sound", but others will insist that I am wrong about this. Pulling the mouthpiece back away from the choke point (in effect) lengthens the back-bore of a mouthpiece and setting the mouthpiece closer to the choke point (again: in effect) shortens the back-bore of a mouthpiece.

In the case where there is no gap - receiver is just the end of the leadpipe, for example - would that call for yet another different mouthpiece backbore?