Excuse me - I am not into electronics. I just want to try out current driven or current feedback topologies here discussed.
I think these are two quite different concepts. One is a low (?) ohmic feedback path - the other is about output impedance. They are definitely not the same thing and don't do the same thing.
//
//
Why? 1875... Built as per the Data sheet! is a decent amp.
Not world beating certainly, but better than most commercial efforts of comparable power output .
And especially Why ? if 'Not into electronics' 😉
Could try for a composite build much like the ones developed for the Lm 3886 .
That has proven to give advantage.
Not world beating certainly, but better than most commercial efforts of comparable power output .
And especially Why ? if 'Not into electronics' 😉
Could try for a composite build much like the ones developed for the Lm 3886 .
That has proven to give advantage.
You can look at this one:
https://www.diyaudio.com/community/...-composite-amplifiers-based-on-lm1875.382575/
Years ago I put a lot of efforts to build Howland current pump amp using LM1875. Finally I got stable and nicely sounding circuit but far, far away from the sound of the composite amp describe in the thread above. If you have not very good speakers (woofers) a current drive can help but apart from that I couldn't find anything comparable to the sound of the composite.
LM3875 and LM3886 are hard to find, eventhough they are better than LM1875.
But LM1875 there are plenty of to buy.
Composite topology is much better. The sound is super clean and no listening fatigue.