https://www.youtube.com/channel/UCa6s0Csw7PEwKOt76CL9ZtA
Try this link. He reviews and he has a class D amps.
Try this link. He reviews and he has a class D amps.
High end Class D amps?
Just an observation and a question. Are there 'high end' Class D amps out there that are just as good as Class A, A/B amps? I realize that's a sensitive question to some and I mean no disrespect---but whenever I see others' hifi systems on social media, all of the amps are A or A/B. There's always Pass, McIntosh, Moon, Luxman, Accuphase, etc. Where are the Class Ds? For folks out there that want more power for less efficient speakers and can't afford the uber expensive Class As, A/Bs, what is there to choose from that's close to those brands? Thanks
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Any amps do, but react differently to it, - phase angle when combined with the speakers impedance is called EPDR (equivalent peak dissipation resistance) and is what the amp really sees. And it’s that combination that’s presented to amps, by many speakers, that can freak them out. Dismiss amp builder that says it a furphy,https://www.dictionary.com/browse/furphy Here is just the Wilson Alexia, it rated as a 4ohm speaker, but!! combine that with the -phase angle it’s got and the amp sees 0.9ohm in the low bass!!!! https://ibb.co/Zzsqsr0 https://www.stereophile.com/images/718WAlex2fig1.jpg Cheers George |
I will repeat my question, why would a class-D amplifier care about phase angle. The data you have presented only applies to thermal loading (hence dissipation resistance) in the linear region of semiconductor devices (It would apply to tubes as well, but don't think it would be much of an issue). Class-D semiconductor devices operate in saturation and would not be impacted by this. |
- 510 posts total