3 ms·
there were commercial class D amplifiers in the 1970s, Sony iirc. but back then Philips had a very cool amplifier, not class D, which fed a signal from the lou
by fsckboy 3y ago
there were commercial class D amplifiers in the 1970s, Sony iirc.
but back then Philips had a very cool amplifier, not class D, which fed a signal from the loudspeaker cone back into the negative feedback loop to correct any error!
- dsr_ 3y agoThey were invented in 1955, but high quality class D audio amplifiers have only been around since the mid90s, and are only now available as simultaneously good, high-power, and cheap. Servo-controlled subwoofers are readily available these days; full-range servo systems are comparatively rare, because the end user generally wants room-calibrated equalization anyway.