Mapman, thank you for kind word. 1000ASP is 58% louder than 200ASC since power ratio is k=5 while
Perceived loudness = k^(1/3.5) = 1.58
It doesn't look that much of a difference but the key is in max current delivery. It is 40A for 1000ASP and only 12.5A for 200ASC. Perhaps because of that minimum load for 100ASP is rated 2ohm but for 200ASC it is 3ohm. I don't have problem with that since my speaker dips only to 3.6ohm (nominal 6 ohm). As I mentioned Icpower spects are very conservative. Muralman1 runs H2O amp based on 500W Icepower module (rated for 2 ohm min) driving 1ohm nominal impedance Scintilla planar speakers with great sound and without any problems.
Maximum output current chart for 1000ASP shows 40A for 0.35s, 30A for 3s, 22A for 45s.
It is also worth mentioning that many Icepower amps (including 1000ASP and 200ASC) have switching power supplies. Main benefit of that is regulated supply voltage that is steady under changing load or dropping supply voltage (line and load regulation). Jeff Rowland strongly believes in switching power supplies. His newest class AB amps have switching power supplies operating at 1MHz (amazing).
Perceived loudness = k^(1/3.5) = 1.58
It doesn't look that much of a difference but the key is in max current delivery. It is 40A for 1000ASP and only 12.5A for 200ASC. Perhaps because of that minimum load for 100ASP is rated 2ohm but for 200ASC it is 3ohm. I don't have problem with that since my speaker dips only to 3.6ohm (nominal 6 ohm). As I mentioned Icpower spects are very conservative. Muralman1 runs H2O amp based on 500W Icepower module (rated for 2 ohm min) driving 1ohm nominal impedance Scintilla planar speakers with great sound and without any problems.
Maximum output current chart for 1000ASP shows 40A for 0.35s, 30A for 3s, 22A for 45s.
It is also worth mentioning that many Icepower amps (including 1000ASP and 200ASC) have switching power supplies. Main benefit of that is regulated supply voltage that is steady under changing load or dropping supply voltage (line and load regulation). Jeff Rowland strongly believes in switching power supplies. His newest class AB amps have switching power supplies operating at 1MHz (amazing).