with my idea what i want to do,and Dragan100´s directions it is done : LME49830 is driving mosfets wich are biased at 300mA and with source resistors of 0,3Ohm. source is also connected to a base of 2SA1943/2SC5200 so the amplifier is a hybrid type and on 8R loudspeakers it works at a-class up to 1W,in "aab" class up to about 15W and in "abb" class up to about 100W / 8R.
here is a schematics that Dragan100 did
,it is slightly changed in bias circuit and two resistors in a remote sense feedback-botg rails. i need to check again latest values and as soon as i do it i will post it here.
we did two versions : LME49830+2SK1058/2SJ156+2SA1942/2SC5200 and LME49830+IRFP240/9240+2SA1942/2SC5200. they are both assembled and tested,here is 15kHz square output signal on 8R slightly inductive load (not pure active)
i did box-inclosure for both amplifiers by my self at home and with simple tools and for now it looks like this
the PSU unit is not compleeted yet but i will do it soon. for now it is like this because i was patinet-less to listen to it in both versions. it sounds...well it souns very well,i am not the best person to give sound impressions (i was a part of duo that built it) but oscilogram says a few words for him self...
