Step by step: full recap + upgrade with Audio Note Kaisei
caps and Vishay polypropylene capacitors.
P.S. The resistors R88 and R89 -IRC 1 Ohms 1W, generate too much heat , the new resistors are CPF21R0000FKE14 Vishay DALE Metal Film Resistors -1 Ohms 2 W.
caps and Vishay polypropylene capacitors.
P.S. The resistors R88 and R89 -IRC 1 Ohms 1W, generate too much heat , the new resistors are CPF21R0000FKE14 Vishay DALE Metal Film Resistors -1 Ohms 2 W.
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VG board
WURTH 860241081008 Capacitor, 150 µF, 200 V, ± 20%, 10000 hours @ 105°C, red caps
Audio Note Kaisei 100 µF, 63 V, gold caps- the originals 68µF, they are filter caps for the DC Servo Opamp supply at 16V
Vishay polypropylene capacitors +
LT1097CN8 new IC LINEAR OPAMP at location U1
WURTH 860241081008 Capacitor, 150 µF, 200 V, ± 20%, 10000 hours @ 105°C, red caps
Audio Note Kaisei 100 µF, 63 V, gold caps- the originals 68µF, they are filter caps for the DC Servo Opamp supply at 16V
Vishay polypropylene capacitors +
LT1097CN8 new IC LINEAR OPAMP at location U1
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SURGE RESISTORS : RIEDON SP-1976 are better choice if you want to protect the amp in case of failure.
Absolutely not. Compare the datasheet... The Vishay (Dale) are better in:
Precision
Short Time Overload
Derating
Maximum Working Voltage
Load life
Precision
Short Time Overload
Derating
Maximum Working Voltage
Load life
Hello,
i'm waiting for a good opinion about power capacitors + external power banks.
Levinson series 300 are well known with power caps failure.
The new caps are Cornell-Dubilier DCMC513M160DP2D 51000uF/160V
https://eu.mouser.com/ProductDetail/Cornell-Dubilier-CDE/DCMC513M160DP2D?qs=8sdi9t63WmqD9Y7Fgl2YCQ==
Life 2000 hours.
Levinson 336 use 4 x 51 000uF =204 000 uF in total
In my storage I still have 50 + BHC Aerovox capacitors, Slit Foil technology , Brand new, old stock
BHC Aerovox Capacitor, Model: ALS30A 1002NP, 4700uF, 450VD / • Long life, 20 000 hours at 85°C
I was thinking to use 4 x BHC 4700uF inside ML336 and two external power banks with 20 or 24 caps outside- total 44 x 4700 = 206 800 uf or 244 400 uF. For the capacitors banks I can use HIFI 2000 Case 4U 300mm - two of them, next to the amp.
The external wiring ,amp & power banks can be made with cable 1/0 AWG (53mm² ) and the amp will need 4 additional holes on the back .
i'm waiting for a good opinion about power capacitors + external power banks.
Levinson series 300 are well known with power caps failure.
The new caps are Cornell-Dubilier DCMC513M160DP2D 51000uF/160V
https://eu.mouser.com/ProductDetail/Cornell-Dubilier-CDE/DCMC513M160DP2D?qs=8sdi9t63WmqD9Y7Fgl2YCQ==
Life 2000 hours.
Levinson 336 use 4 x 51 000uF =204 000 uF in total
In my storage I still have 50 + BHC Aerovox capacitors, Slit Foil technology , Brand new, old stock
BHC Aerovox Capacitor, Model: ALS30A 1002NP, 4700uF, 450VD / • Long life, 20 000 hours at 85°C
I was thinking to use 4 x BHC 4700uF inside ML336 and two external power banks with 20 or 24 caps outside- total 44 x 4700 = 206 800 uf or 244 400 uF. For the capacitors banks I can use HIFI 2000 Case 4U 300mm - two of them, next to the amp.
The external wiring ,amp & power banks can be made with cable 1/0 AWG (53mm² ) and the amp will need 4 additional holes on the back .
Starting resistors (3 pieces of 10 Ohm) I installed 3 pieces of 22-25 Ohm. The amplifier's starting current is less - it is easier for the home power network. 🙂
THE ORGINAL CAP FOR 336 WAS 50000uF 125V. THE REGULATOR CAP WAS 1900uF 150V THEY WILL FAIL.
I HAD CORNELL DUBIER ENG MAKE 51000uF 160V ABOUT 14 YEARS AGO AT 76MM IN DIAMETER AND 150MM LONG. THE 51000uF 160V WITH 200V SURGE HAS NEVER FAILED. NOW IT IS RELEASED TO MOUSER AND DIGIKEY. THE ORGINAL DIAMETER IN CDE PDF WAS 89MM IN DIAMETER AND 5 INCHES LONG.
ALSO ALL THE CHEAP RED CHINA MADE SURGE RESISTORS WILL FAIL. NONE OF THEM HAVE JOULES. I SEND THE ORGINAL ML WIREWOUND RESISTORS TO RIDEON TO MAKE BETEER ONE WITH HIGHER JOULES SPECIAL WIRE AND VERY EXPENSIVE.
I HAD CORNELL DUBIER ENG MAKE 51000uF 160V ABOUT 14 YEARS AGO AT 76MM IN DIAMETER AND 150MM LONG. THE 51000uF 160V WITH 200V SURGE HAS NEVER FAILED. NOW IT IS RELEASED TO MOUSER AND DIGIKEY. THE ORGINAL DIAMETER IN CDE PDF WAS 89MM IN DIAMETER AND 5 INCHES LONG.
ALSO ALL THE CHEAP RED CHINA MADE SURGE RESISTORS WILL FAIL. NONE OF THEM HAVE JOULES. I SEND THE ORGINAL ML WIREWOUND RESISTORS TO RIDEON TO MAKE BETEER ONE WITH HIGHER JOULES SPECIAL WIRE AND VERY EXPENSIVE.