Loudspeakers are the most important link in the sound reproduction chain. Mainly because, they have the highest frequency response variations, highest Harmonic, distortion, highest intermodulation distrotion, highest spurious responses like chuffing, resonances etc, highest negative effect on other components acting as nonlinear loads. Only badly designed, over driven single ended tubea amps and listenning room effect can come close! kaanseler@gmail.com