650 WATT 85 VOLT BOSE
Sebuah amplifier merk BOSE dengan menggunakan 6 pasang transistor power dengan kode part number tersendiri konon menghasilkan daya audio hingga 650 watt dengan tegangan supplai 85 Volt.
Rangkaian ini saya dapat saat kelapayapan di internet dan ada amplifier buatan BOSE seri 1801 saya temukan namun tidak diketahui nomer seri transistor finalnya.
Setelah saya pelajari ternyata transistor power menggunakan seri MJ15011 yang memiliki kemampuan dissipasi daya 200 Watt ( DATASHEETS ). Ini berarti ada kemungkinan daya hingga 1200 Watt pada setiap kanal power amplifier ini.
Akan tetapi jika saya kalkulasikan dengan kemampuan amplifier untuk mengeluarkan tegangan hanya sampai 51 Volt RMS pada titik output maka power output dari amplifier ini mentok ke 650 Watt untuk beban 4 Ohm.
Dengan beban 2 Ohm pun saya rasa masih bisa menghasilkan daya 800 Watt akan tetapi saya tidak menyarankan hal ini.
Berikut adalah skema edit dari BOSE 1801:
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SKEMA YOHAN ( HERE )
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