TromboneChat

I see that the Yamaha Silent Brass mutes don’t have an option for bass trombone. Has anybody used the normal trombone one on bass or knows if it would fit?

The older mute fit my bass trombone fine.

You could try building up the corks to fit a bass trombone.

Bruce is right. The older version will fit a bass. It will make the horn front heavy, but it will work.

The new French horn one kind of works but it makes the intonation weird iirc.

The older LARGE mute even fits the large bell throat of my King 8B, but the smaller, newer design "scalloped" mute required that I make another cork layer to build it out of the bell throat. I used the mute as a guide, rolled it on a sheet of paper, tracing the arc as it rolled and then when the paper template fit the mute properly I transferred it to a sheet of cork and cut the final example. It is true that the smaller mute is "squirrelly" intonation-wise especially in the lower register. The Yamaha Silent Mute isn't perfect but is sure does come in handy !

As I use the smaller version both on small tenor and bass, I use a neopren belt, possibly cut from a surf suits arm.
It doesn't clamp perfect, but the silent brass endures occasional drops and as it is not on stage..

Here two images to show it fits at least a 9.5 inch bell.

I tried that devise on my bass horn and thoroughly hated it. So I switched to the Nepus barrette covering for one year while transitioning from a house through an apartment to a 55+ five-plex with us in the end unit that has a secondary bedroom on an outside wall. What a relief to be free of BOTH devises now, although I still use the Nepus for special effects; sometimes full on and sometimes half on!