'Z' means impedance in 'electronic speak'
Amps damping factor is another one of those minimal specs.
Above a certain minimal value they don't mean much except to the advertising copywriting guy.
Besides, the amp doesn't 'absorb' or 'Damp' or 'control' the Back EMF from the woofer. Rather, the woofer controls itself.
You can test this idea by thumping the edge of a woofer with a finger. Than, short out the leads to the driver with a piece of wire. Thump again and the sound changes lots. this is the woofer damping itself. Low input impedence of an amps outputs just allow the current to pass thru, back to the woofer.
More (arguable) is the speaker systems design 'Q', which also is an expression of damping. What is called 'critically damped' design of Q=.7 will give nice tight bass even with a minimal damping factor amp. A speaker with a hi 'Q', say 1.2 or so, will sound sloppy, even with a high damping factor amp.
Amps damping factor is another one of those minimal specs.
Above a certain minimal value they don't mean much except to the advertising copywriting guy.
Besides, the amp doesn't 'absorb' or 'Damp' or 'control' the Back EMF from the woofer. Rather, the woofer controls itself.
You can test this idea by thumping the edge of a woofer with a finger. Than, short out the leads to the driver with a piece of wire. Thump again and the sound changes lots. this is the woofer damping itself. Low input impedence of an amps outputs just allow the current to pass thru, back to the woofer.
More (arguable) is the speaker systems design 'Q', which also is an expression of damping. What is called 'critically damped' design of Q=.7 will give nice tight bass even with a minimal damping factor amp. A speaker with a hi 'Q', say 1.2 or so, will sound sloppy, even with a high damping factor amp.