You doing the work yourself or did you send the amps to Krell?
Reason I ask is I also have an old Krell needing restoration.
Thanks.
Reason I ask is I also have an old Krell needing restoration.
Thanks.
Krell KRS-100 caprevision
Dear All,
Just acquired a pair of Krell KRS-100 Class A fixed bias monaural amplifiers,
The blue large can Sprague Series 36DE filter-capacitors (6 of them per chassis) have a date-code of 8826 what means they're manufactured in week 26 in the year 1988. The other small caps are German Roedersteins 24 of them orange axial ones per channel. These are of the same age and most techs will state that the should be replaced.
I choose Vishay AML 138 series with a 105 degree Celcius rating. The smaller darkish red radial Roedersteins have all been changed by Vishay 105 degree Celcius types already.
Question: apart from the smaller caps I do not think that the big blue Spragues need replacement when they measure okay , I mean ESR and capacitance or am I wrong.
The drivers on top of each of the six coolingtowers are Hitachi K176/J56's followed by three MJE15024/25 outputtransitors.
There's also a opposite pair of MJE15030/31 TO220's in the middle of the blue coolingfins and these are used as temperature sensing devices I've been told and they should be attached to the two middle cooling towers of the six.
Any other advice regarding these amps? I like them very much and do intend to keep them.
As Krell wants I drive them with a solid state pre-amp (Threshold FET ten/e series) and it sounds gret to my ears.
Reactions are really welcomed because these amps are not very well documented like for instance the Levinson ML-2's
Thanks in advance
Just acquired a pair of Krell KRS-100 Class A fixed bias monaural amplifiers,
The blue large can Sprague Series 36DE filter-capacitors (6 of them per chassis) have a date-code of 8826 what means they're manufactured in week 26 in the year 1988. The other small caps are German Roedersteins 24 of them orange axial ones per channel. These are of the same age and most techs will state that the should be replaced.
I choose Vishay AML 138 series with a 105 degree Celcius rating. The smaller darkish red radial Roedersteins have all been changed by Vishay 105 degree Celcius types already.
Question: apart from the smaller caps I do not think that the big blue Spragues need replacement when they measure okay , I mean ESR and capacitance or am I wrong.
The drivers on top of each of the six coolingtowers are Hitachi K176/J56's followed by three MJE15024/25 outputtransitors.
There's also a opposite pair of MJE15030/31 TO220's in the middle of the blue coolingfins and these are used as temperature sensing devices I've been told and they should be attached to the two middle cooling towers of the six.
Any other advice regarding these amps? I like them very much and do intend to keep them.
As Krell wants I drive them with a solid state pre-amp (Threshold FET ten/e series) and it sounds gret to my ears.
Reactions are really welcomed because these amps are not very well documented like for instance the Levinson ML-2's
Thanks in advance