I am sorry I only speak English. I am restoring a B&O Beocenter 3500 which is very similar to the 4000. Your repair and improvements look very good! I am interested in how and why you changed the 3 output capacitors to four capacitors? What are the values of the capacitors? How is this better? Did you change the output transistors as well? Nice job! Thank you!
Good evening. Thanks for the comment. Capacitors 4700μF63V - NCC. Two are turned on as usual at the output of the amplifier, another pair is turned on in parallel - we get a total of 4700x2. It turned out compactly and beautifully. The out stage transistors did not change - only small TO92. Replaced all electrolytic and tantalum capacitors. Replaced trimmer potentiometers. I installed a timer circuit with a relay to remove the clap in the speakers when turning on and off. On request of the owner, he removed the phono stage and organized another AUX input. The receiver has been rebuilt and is working very well. Excuse my bad english. Best wishes, Andrew.
@@avmandrew8949 Hi Andrew, Thank you for your detailed response. I also like the way you replaced the DIN speaker connectors. Your English is excellent! I wish you were local to work on my 3500.
Это раритет. Ничего выдающегося как высококачественный усилитель тут нет. Тем более это ресивер. Сравнение с Барк/Бригами не корректно, последние могут быть и не ухожены/частично неисправны или идеально отремонтированы + модернизация - как сравнить?
@@avmandrew8949 Спасибо ,я понял ,а то у нас продаеться 3000- 2 баксов 70 ,а теперь точно покупать не буду ,лучше наверное YAMAHA RX 10 ресивер возьму или Сансуй 117 усилитель.
Отличная работа!!! Класс!
I am sorry I only speak English. I am restoring a B&O Beocenter 3500 which is very similar to the 4000. Your repair and improvements look very good! I am interested in how and why you changed the 3 output capacitors to four capacitors? What are the values of the capacitors? How is this better? Did you change the output transistors as well? Nice job! Thank you!
Good evening. Thanks for the comment. Capacitors 4700μF63V - NCC. Two are turned on as usual at the output of the amplifier, another pair is turned on in parallel - we get a total of 4700x2. It turned out compactly and beautifully. The out stage transistors did not change - only small TO92. Replaced all electrolytic and tantalum capacitors. Replaced trimmer potentiometers. I installed a timer circuit with a relay to remove the clap in the speakers when turning on and off. On request of the owner, he removed the phono stage and organized another AUX input. The receiver has been rebuilt and is working very well. Excuse my bad english. Best wishes, Andrew.
@@avmandrew8949 Hi Andrew, Thank you for your detailed response. I also like the way you replaced the DIN speaker connectors. Your English is excellent! I wish you were local to work on my 3500.
Вечер добрый! И как он вам в плане звука? Если сравниват с БАРКАМИ БРИГАМИ , то он лучше звучит или на ровне ?
Это раритет. Ничего выдающегося как высококачественный усилитель тут нет. Тем более это ресивер. Сравнение с Барк/Бригами не корректно, последние могут быть и не ухожены/частично неисправны или идеально отремонтированы + модернизация - как
сравнить?
@@avmandrew8949 Спасибо ,я понял ,а то у нас продаеться 3000- 2 баксов 70 ,а теперь точно покупать не буду ,лучше наверное YAMAHA RX 10 ресивер возьму или Сансуй 117 усилитель.