Crown/Amcron D-75 Mod/Rebuild/Improve
Photograph:Hassy@MetaDesignWork
(C)2017 Hassy All Right Reserved



















Mod/Improve/Rebuild


(non inductive WireWound Resistors & PP Capacitors)



(SBR 100V40A Lo Noise Diode Bridge /
directly voltage selected into AC100V)



(non inductive Metal Plate Resistors w/Heatsync
LEDs replaced hiblight type w/lo current drive)




(rewiring w/Mogami OFC wires)


(DC+/-30V & DC+/-18V Regulators
Balanced Input rebuild & Speaker Protection)


(Cable clamp for AWG14 OFC Power Cable
Fuse Holder relocated)



(FuseHolder relocated
for AWG14 OFC Power Cable)


(Conductive Plastic Potentiometers)





(HeadPhones Out Attenuator
w/non inductive WireWound Resistors)


















AC Cable replace/rewiring



(AWG14 OFC Power Cable w/Marinco AC Plug)




Regulator rebuild
(Main DC+/-30V)


Regulator rebuild
(Very Lo Noise DC+/-18V
rebuild Input/GainAmp/IOC Detect
for DC+/-18V Drive , not DC+/-10V)












(LEDs Power Indicator , instead of Neon Lamp)
((Monitor of DC+/-18V Regulator))


Speaker Protect


(Output Mute @Power On /DC Detect/Power Off
w/Internal Dummy Load L/R Indivisual processing)




(5A Power Relay 2C Parallel connection)


Balanced Input rebuild
































Dummy Loads
(for Speaker & HeadPhones)


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(C)2000-2019 Hassy All Right Reserved
Meta Design Work