help! kenwood KA-501 wanted

jagalj · 24th July 2006, 09:28 AM

Hi there! I am new in this forum. Wondering if anyone can help me: I have got completly toasted KA-501, with possible preamp section alive, but the rectifier and the output amp are completly removed. I don`t know voltages for the preamp and the values of parts for eventualy repairs/modifications. My intensions are to put in a nice hybrid amp I am using and making for years: input section of amplifier (for voltage amplifying) is valve amp,wit PCC88, and current (output drivers) section is Hitachi`s mos-fet 2SK/2SJ amp, completly without NFB. If somebody is interested to build such one, I`ll post a copletly schematics, part lists and PCBs layout. It`s sounds warm like valve amp and has all dynamics and power that valve amps usualy lack and it`s relatively cheep and easy to build.

latala · 24th July 2006, 10:28 PM

Go On show us your baby!
I get many hours of pleasure thinking about such projects
regards Trev

24th July 2006, 09:28 AM	#1
jagalj diyAudio Member Join Date: Oct 2005	help! kenwood KA-501 wanted Hi there! I am new in this forum. Wondering if anyone can help me: I have got completly toasted KA-501, with possible preamp section alive, but the rectifier and the output amp are completly removed. I don`t know voltages for the preamp and the values of parts for eventualy repairs/modifications. My intensions are to put in a nice hybrid amp I am using and making for years: input section of amplifier (for voltage amplifying) is valve amp,wit PCC88, and current (output drivers) section is Hitachi`s mos-fet 2SK/2SJ amp, completly without NFB. If somebody is interested to build such one, I`ll post a copletly schematics, part lists and PCBs layout. It`s sounds warm like valve amp and has all dynamics and power that valve amps usualy lack and it`s relatively cheep and easy to build.

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24th July 2006, 10:28 PM	#2
latala diyAudio Member Join Date: Feb 2006 Location: staffordshire	Go On show us your baby! I get many hours of pleasure thinking about such projects regards Trev

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