Deepest mouthpiece in 28-27.7mm

[JackMyung]

Hello, I am a utility trombonist mainly plays bass.

A few days ago, I discovered an emboucher problem and changed the size of the mouthpiece.

The mouthpiece I was previously using was Greg Black 1g.

However, this time I changed to JK 1Ak and felt very stuffy due to the relatively shallow cup.

So this time, the same rim size (28mm or slightly smaller) I am looking for a mouthpiece with a deeper cup.

(In fact, I want Gregg Black, but taxes are high in Korea)

Do you know a mouthpiece that fits this option? (It would be better if it was less than $150, but don't care about that)

[LIBrassCo]

Pollard Sarastro Gravitas 800 is crazy deep. There's a link in my signature.

[boneberg]

The JK 1AK does have a deep cup with a large backbore (8mm). I play a JK 1BK which is only slightly smaller regarding cup and back bore (7.6mm). I really like the 28mm rim.

[JackMyung]

Pollard Sarastro Gravitas 800 is crazy deep. There's a link in my signature.

very interested I hope play your MP soon of late

[JackMyung]

The JK 1AK does have a deep cup with a large backbore (8mm). I play a JK 1BK which is only slightly smaller regarding cup and back bore (7.6mm). I really like the 28mm rim.

Yeah definitely AK cup is one of the deep cups
But I felt it can’t accept lots of air
(Maybe I blew too loudly but It was necessary at that time)

When I played greg black 1g that was enough

So I looking for deepest cup in 28mm like black 1-3/8

[tbonesullivan]

I'd recommend consulting with a mouthpiece designer or working professional to diagnose your issues. Who did you work with when determining that you had an "embouchure problem" a few days ago?

Mouthpieces are not cheap, and just buying a bunch trying to fix a perceived issue with solutions that may not work is not exactly a good idea, IMHO.

[modelerdc]

You could try the Wick 00AL.28mm rim and deeper cup than most, too deep for me on bass trombone.