You dont make every day amplifiers that have been shipped from abroad .That was a fun project to do transportation was quiet expensive but the total project was relatively cheap ( we managed to keep pp around 86 euro 2way )
Classic kenwood Trio KA 5700 amplifier what was done was the standard procedure with the most attention possible given .
10.000 KMH NIPPON X 2 for the power supply + decoupling
MUR fast recovery diodes in the power supply
63v and 105 degrees all other capacitors
MKS in critical stages like input
boosted capacitance here and there
serious repairs on the totally screwed pcb
multiturn trimmers for the idle ( amplifier featured no adjustment )
beef up the idle just a touch
a bit of art work for a metal reflector above the VU meter
chemical and ultrasonic cleaning
Fitted now with a standard IEC plug
Bypassed the speakers AB switch
Rewire a few things here and there
separate 230V and speakers leads ( very bad practice from Japanese )
and good to go for many years to come
enjoy Manuel ..
plenty of pictures
Classic kenwood Trio KA 5700 amplifier what was done was the standard procedure with the most attention possible given .
10.000 KMH NIPPON X 2 for the power supply + decoupling
MUR fast recovery diodes in the power supply
63v and 105 degrees all other capacitors
MKS in critical stages like input
boosted capacitance here and there
serious repairs on the totally screwed pcb
multiturn trimmers for the idle ( amplifier featured no adjustment )
beef up the idle just a touch
a bit of art work for a metal reflector above the VU meter
chemical and ultrasonic cleaning
Fitted now with a standard IEC plug
Bypassed the speakers AB switch
Rewire a few things here and there
separate 230V and speakers leads ( very bad practice from Japanese )
and good to go for many years to come
enjoy Manuel ..
plenty of pictures
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