Zen Mod

jos samo LEDs, zicice za inputs i finalno kuvanje

takva 2 po strani taman za proper A class

svaka cast na informaciji za drugare moj savet bi bio da uzmes sebi jos dva - taman dva po boku ampa i ako je AB klasa i ne treba toliko hladjenja , ispadne super kuciste i imas manje posla nego da dobacujes neki lim ili drvo

a jes sto bi rekao Šojić - meta je zgođena!

eto to

rekoh - priroda , , ne citanje postotaka sve moze arbitrarno da se promeni , odnosom vrednosti MOX otpora u izlaznoj vertikali

ima li ko komentar - priroda ampa sa oba IRFP u izlazu , priroda ampa sa Semisouth dole , IRFP gore ?

Semisouth SJEP120R100 u donjoj poziciji , 4R load

surprise !!!! Semisouth SJEP120R100 u donjoj poziciji , 8R load

ih ko da sam gi ja crto

tomorrow - Semisouth SJEP in bottom position , 2SK2145BL will stay in , no reason to change them anymore it just came to my (precious!) mind - I can try Pass SIT-1 there , too...... naah , too complicated , involving depletion part .....

same , load 4R

now the real stuff ...... I mean - hard data (observe how I finally switched two cells On , so removed confusing unnecessary part of graph ) each graph is having title in bottom so , THD indeed goes down , comparing to yesterdays measurements , with pair of Toshiba 2SK170BL in FE load 8R

as I promised (to my self , in first place ) , today I did change pair of 2SK170BL in input LTP position , for 2+2 pcs of 2SK2145BL previous idea was to up LTP current from 10mA to 20mA , resulting in healthy 50mW per tiny bugger , but later decided to try Papa's approach , of doubling input JFets , while Iq keeping at same level as for single pair that way - due to increased combined xconductance , OLG is rising , and without change of NFB network , NFB is rising , so we can expect lower level of THD is it good thing or not - sound wise , who cares ...... I have all the time left to humanity to try that ...... later

dovoljno jeftino da uzmes i napravis iz gusta i posle da se kezis ko benast i svima okolo pricas kako dobro svira kud ces bolje

eto, ovaj nema ono ckupo gvozdje i nema one ckupe current sense chips i nema one ckupe tokine sinko,ovaj sinko - imas li ti ostali hardware ...... to uvek kosta isto .......

Mikum ga mrko pogledao i ovaj jado odmah mora da navija

that's it , practically , for today tomorrow , I hope - same tests with 2+2 2SK2145BL in LTP , LTP current programmed to 5mA per tiny (20mA overall) , so it'll be nice and cozy 50mW for each will up a little current through EF , to be closer to 20mA than 15mA ........ after that will most probably leave 2SK2145BL in situ ( not crazy enough to remove them ) and try same battery of test with SJEP120R100whatever in lower output position .... will leave mighty IRFP150 in position of upper one ( mu or what-follower) , can't see what Semisouth could do better in same role .... ZM , Happy Camper this evening edit: Shade game not promptly ; first need to evaluate this one in long term listening test , to be able to value Shade after ..... I know it'll measure worse , but it could happen that my ears are happier with worse after all , I'm listening regularly one of crappiest amps by measurements and enjoying immensely

so , set of measurements at 4R load , same Iq and rails as for previous test btw. I decided that clipping is at 1% THD , and that's exactly at 21W9 ...... though - it was tricky to set level pot to exact value (THD rising rapidly at that level!!) pretty good , if you ask Mighty Moi

power-on and power-off behavior is same polite and nice and gorgeous as ZM Might itself , so there is no any surprise now some measurements ....... being lazy and impatient , I didn't use recently acquired Quantasylum ( older , SE one ) but my old funny interface box and EMU1212 in PC , software is ARTA Iq set at 1A8 , rails more or less exactly 25Vdc first set of measurements at 8R load ; each graph is titled at bottom ; as always with my T-Bed and test setup - ignore everything left of 1K ...... plastic box for interface , old and crummy PSU incorporated in T-Bed blahblah

then yesterday and today I put it in T-Bed , and did some final tweaking of some values for start , they're equipped with 1+1 Toshiba 2SK170BL in FE , Iq set at 10mA (5mA per tiny) and pair of goodoldsturdy IRFP150 are in OS