Many years ago Philips tried to develop a full digital amp that aimed at getting the full potential out of the SACD and had the problem that no switching transistor was fast enough to do 2.8Mhz delta-sigma without correcting feedback. So they took 16 switching devices, where any of them only handled every 16th bit and every bit was extended to 16 times of its original width, resulting in 16 bitstreams of 1/16 of the original rate, running phase-shifted to each other. These 16 bitstreams were added to give a slightly lowpassed version of the original bitstream.
I don´t know whether the voltages were really added in that concept, probably rather not, but could it be done with floating power supplies?
If not, an alternative would be the use of Thyratrons, but these are even slower, so one would probably have 64 switching devices or so.
I don´t know whether the voltages were really added in that concept, probably rather not, but could it be done with floating power supplies?
If not, an alternative would be the use of Thyratrons, but these are even slower, so one would probably have 64 switching devices or so.
check here: https://ris.utwente.nl/ws/portalfiles/portal/6030469
Thesis about high-voltage Class D amp.
What do you think about that?
Thesis about high-voltage Class D amp.
What do you think about that?
I know this thread may be old but I find myself needing some advice: I built a pair of ESLs and I'm driving them with a AA-AB32312 Sure amp board. Based on this thread it seems as though there's some way to tweak the amp to be better suited for driving these panels. Could anyone point me in the right direction of where to go with this?
Ben
Ben
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