Posted by Bin Love on June 29, 2002 at 15:01:11:
In Reply to: Meinl Weston model numbering posted by Thomas on June 29, 2002 at 13:22:36:
x = size
For example 2145 is 4/4, 2155 is 5/4 and 2165 is 6/4
y = number of valves
Amost all horns you run into will have five valves. Every so often you'll hear about a 2164 or 2154 - these are the same horns, with only the 4 piston valves.