yabba235 Posted February 7 Report Share Posted February 7 30 minutes ago, kevin gilmore said: there is no way this is going to be a diy product. I understand, and when will it be ready to buy? Quote Link to comment Share on other sites More sharing options...
yabba235 Posted February 7 Report Share Posted February 7 I have one more, maybe a stupid question - how are these four amplifiers connected - there is no phase inverter there and looking at the pcb I can see that the inputs in the channels are connected (?) - I'm tired of this matter and I can't sleep because of it - can you explain it to me ? Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted February 8 Author Report Share Posted February 8 well there are 2 ways to do this. instrumentation amp and inverting/non inverting. pick one, they are roughly equivalent. Quote Link to comment Share on other sites More sharing options...
justin Posted February 8 Report Share Posted February 8 On 1/13/2022 at 3:49 AM, HVRV said: This is the latest design might look similar to Stax-D10 but the fact is different. Why under cut a supposedly original design by making it look just like the SRM-D10? Seems to show a lack of confidence 1 Quote Link to comment Share on other sites More sharing options...
yabba235 Posted February 9 Report Share Posted February 9 I have a certain idea - you could add a direct input for a balanced signal - my qudelix gives 4V rms in this mode - bypassing the potentiometer, which is not of high quality - anyway, it is unnecessary in this configuration because the gain control is taken over by the phone or the qudelix itself (of course it writes about my case) Quote Link to comment Share on other sites More sharing options...
s2030081 Posted February 9 Report Share Posted February 9 Maybe a good idea to have a bypass mode just like T8000? Quote Link to comment Share on other sites More sharing options...
yabba235 Posted February 10 Report Share Posted February 10 On 2/8/2022 at 8:26 PM, kevin gilmore said: well there are 2 ways to do this. instrumentation amp and inverting/non inverting. pick one, they are roughly equivalent. Nice joke I simulated your schematic in topology from pcb and it does not work in any way - only in single mode, not bridge. And I know it works to you - some "king of magic" I always liked to check the circuit in the simulation before I did something - we have something in common Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted February 10 Author Report Share Posted February 10 (edited) if you can't copy it now... Edited February 10 by kevin gilmore Quote Link to comment Share on other sites More sharing options...
yabba235 Posted February 10 Report Share Posted February 10 3 hours ago, kevin gilmore said: if you can't copy it now... Thank's, but my problem is when I connect them single amp like on a kerry pcb together, the simulation does not work. And I can see that it works in real - maybe I'm doing something wrong in the simulation ?? Quote Link to comment Share on other sites More sharing options...
yabba235 Posted February 11 Report Share Posted February 11 Now all works - I had a short break with electronics so I was a bit rusty Quote Link to comment Share on other sites More sharing options...
yabba235 Posted June 17 Report Share Posted June 17 Born in pain - no semiconductors on the market- but case is here ! Introduction my portable estat with necessary modifications 4 Quote Link to comment Share on other sites More sharing options...
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