electronics australia 300 watt amplifer

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hi diyers
geetings everyone wanting to ask if the circuit published in
ea 1960 300 watt amplifier can be upgraded for higher power level
there is npn pnp version and the npn version using 2n3773 transistors
in output the sonics might noy be great but very very reliable pushed to 2 ohms never gave up very easy to get components want to know
of npn version only all gurus of diy djk ostripper carlos mr steeve dunlap andrew t dr borivoge could please help can anyone tell
using 2n3773 in output stage how much output power is possible does
any circuit exists greater than 600 watts using 2n3773 in output exists
please let me know
thanking you
andrew lebon
 
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