Tuberculin, Class D is not a digital amp. Class D is just one of the next levels of amp design nomenclature. They have Class A, Class B, Class A/b, Class D so on. People always seem to think that Class D means digital, it is not. In fact where Class D really shines in most designs due to some amps not having a lot of very expensive feedback circuit designs is in the lower frequencies. Class D amps can suffer from upper frequency harshness if they do not employ fancy feedback designs. For Subs, Class D is probably the best option which is why most companies use it. It’s very efficient, produces huge power with almost no distortion at low frequencies, very low loss and heat which A and A/b amps make a lot of heat as they are not terribly efficient.
The best of all worlds is to have a good class D amp section coupled with a very nice Linear Power supply, large toroid transformer and a lot of capacitance for reserve head room. If you ask the manufacturers of the subs what type of power supplies they use, most will tell you that they have a switching type supply which has little headroom and therefore runs out of fuel fast.
The best of all worlds is to have a good class D amp section coupled with a very nice Linear Power supply, large toroid transformer and a lot of capacitance for reserve head room. If you ask the manufacturers of the subs what type of power supplies they use, most will tell you that they have a switching type supply which has little headroom and therefore runs out of fuel fast.
