Hi everyone,
I'm new to the forum,and I need some help.
If anyone knows Randy Stone "The Audiophile's Project Sourcebook",I built a BJT amplifier (Figure 6.15) ...which doesn't work.So far I burned three speakers,till I learned to check for DC current at the speaker.
Removing transistors from Q16 to Q23 brings the DC voltage down to .5V,but one I put back the Q16 and Q17 the voltage at the speaker goes back to +48V.
Also the D6 diode goes so hot after 1-2 minutes,you can smell it.
For the PCB I used the artwork from the book,so I can't make any mistake designing it.
Beeing my first posting,I don't know how to attach a picture of the electrical diagram of the amplifier.
I'm new to the forum,and I need some help.
If anyone knows Randy Stone "The Audiophile's Project Sourcebook",I built a BJT amplifier (Figure 6.15) ...which doesn't work.So far I burned three speakers,till I learned to check for DC current at the speaker.
Removing transistors from Q16 to Q23 brings the DC voltage down to .5V,but one I put back the Q16 and Q17 the voltage at the speaker goes back to +48V.
Also the D6 diode goes so hot after 1-2 minutes,you can smell it.
For the PCB I used the artwork from the book,so I can't make any mistake designing it.
Beeing my first posting,I don't know how to attach a picture of the electrical diagram of the amplifier.