The g10 gold is the ultimate 10" speaker, blending unmistakable alnico class with a rich low-end, creamy mid-range and vintage chiming top-end. Springy, warm, revealing and highly expressive, it can be used singly or in pairs to add a classy sheen to any amp, or in a 4x10 configuration for higher volume depth, warmth and shimmer, with less of the boom associated with 4x12 cabinets.dimensions (mm)135x254resonant frequency (hz)80impedance (ohms)8coil size (mm)44.5sensitivity (db)98power rms (w)40frequency response (hz)80-6000diameter (mm)254