Hello guys, I’m desperate to find an original power supply for this amp. It was handed down to me and I listened to it all the time but my partner threw out the power supply by mistake thinking it was for the keyboard we were getting rid of!!! 😡
If they are pure unobtainium would anyone happen to have a circuit diagram or know how to make one?? I have done a little research and there isn’t much online wrt the power supply. What I did find is what it needs a 19v+/- ac supply.
Any help would be much appreciated.
Matt
If they are pure unobtainium would anyone happen to have a circuit diagram or know how to make one?? I have done a little research and there isn’t much online wrt the power supply. What I did find is what it needs a 19v+/- ac supply.
Any help would be much appreciated.
Matt
Not much help sorry, but the Earmax is distributed in the UK by The Audiophile Club. Have you tried them to see if there are spare power supplies available? The web address Brocksieper Audio web page (the manufacturer in Germany) doesn't seem active. Have you tried the headphone forums? There generally isn't much DIY going on in those but you may get lucky with someone who knows a tech whose done some work on one.
Is yours the original that uses ECC86 output tubes? I think these had AC in to the amp unit that fed the filaments and was also voltage multiplied to DC for the tubes. ECC86s are a low voltage tubes so B+ likely wasn't more than about 50 volts.
If all else fails a local tech might be able to give an idea of what the board is expecting, voltage-wise. Do you want to probe around in it yourself? Take the bottom cover off and have a look at the power jack and see what the connections are.
If it wasn't for crossing the Atlantic twice I'd have a look at it for you. I've built a couple of Earmax clones but they were not powered like the original.
Steve
Is yours the original that uses ECC86 output tubes? I think these had AC in to the amp unit that fed the filaments and was also voltage multiplied to DC for the tubes. ECC86s are a low voltage tubes so B+ likely wasn't more than about 50 volts.
If all else fails a local tech might be able to give an idea of what the board is expecting, voltage-wise. Do you want to probe around in it yourself? Take the bottom cover off and have a look at the power jack and see what the connections are.
If it wasn't for crossing the Atlantic twice I'd have a look at it for you. I've built a couple of Earmax clones but they were not powered like the original.
Steve