The COMP25T-8 is a replacement HF driver assembly used in several Carvin guitar and bass combos as well as pro audio loudspeakers listed below. The impedance is 8-ohms and the diameter is 1". 

HF Driver Assembly used in :

AG Acoustic Combos

AG100D
AG200
AG300

MB Bass Combos

MB10
MB12
MB15
MB210

Pro Audio Loudspeakers

810
LS1002