| Gold brass has a higher copper content than yellow brass.
Generally a trumpet with a gold brass bell will have a warmer sound than one with a yellow brass bell. Either is applicable to legit or jazz situations..it depends on what sound you want.
A nice fat Bach sound usually comes from a good player playing a nice,dark fat Bach ( Or a fat player with a nice, dark Bach..had to throw that in :) ). Mouthpiece and practice will have a lot to do with that..I'm no Bach expert but I believe that the different model bells respond differently.The 72 and 65(?) bells I believe are darker ie they have slow flares. I think the Bach web site has an explanation about the different bells and their characteristic. They also have some trumpets that are heavyweights, (H) after the model number and the Vindabona which is a (conical?) bore trumpet which is on the dark side.
Hope this helps.
Regards,
Trevor |