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Comments
The internal speaker is 8Ohms and a Celestion G10, not a bad model? The danger is an external feed could get shorted and the schematic shows no protection AFAICS.
The circuit also uses a current feedback trick to simulate the higher OP Z of a valve PA abd this might be a problem if the speaker lead is long enough. The circuit also uses the horrid jack switching technique to get a headphone output. This is a known source of trouble, if not in this, in other transistor amps.
Dave.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Yes, that looks pretty chunky, should blow the fuse first. Would that ALL transistor amps were such a BSH grade!
Dave
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
http://www.hotroxuk.com/mono-input-jack-4-solder-terminals-switched.html
Connect the wires to the terminals on the side you can't see in this pic, black closest to the nut.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein