I wanted to know is it difficult to transform this chip amp TDA7293 from voltage drive to current drive?
Saw that one modified this chip amp to current drive - with pictures and measurements (german language):
https://www.aktives-hoeren.de/viewtopic.php?f=16&t=1427&start=45
Saw that one modified this chip amp to current drive - with pictures and measurements (german language):
https://www.aktives-hoeren.de/viewtopic.php?f=16&t=1427&start=45
But, unfortunately, TDA2003 also has higher THD values. Actually, above 0.1 percent and, according to definition it is not Hi-Fi.
Everyone can decide for himself.
I just don't get why you want to drive a loudspeaker from a high impedance source. Speakers usually (I don't know any other...) are designed to be driven from impedances as low as possible. High impedance means low to non existing damping. Hence, what you perceive as better sounding, most probably are non controlled, sloppy, boomy bass frequencies. Quite the opposite of high fidelity.
Best regards!
Best regards!
current drive is the correct way to drive speakers, but the speakers need to be designed for it. Here is a thread that puts some light on it:
https://www.diyaudio.com/community/threads/help-to-understand-current-drive.390405/
and here is another one that shows the idea for a TDA7294 composite amp designed for current drive (german language):
https://www.aktives-hoeren.de/viewtopic.php?f=37&t=1492
Gruß
Bernd
https://www.diyaudio.com/community/threads/help-to-understand-current-drive.390405/
and here is another one that shows the idea for a TDA7294 composite amp designed for current drive (german language):
https://www.aktives-hoeren.de/viewtopic.php?f=37&t=1492
Gruß
Bernd
Last edited: