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Headphone Heights Welcome to Headphone Heights, the place for all your ear bud discussion |
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I have a RA-1 battery ver. that will now be seeing almost daily use. According to others/Grado it can be converted to psu use with (2) 9 volt converters.
Having done this I get a loud buzz/hum as soon as I connect both units, volume at zero. Connections are okay.
I am using seemingly identical converters having attached two 9 volt battery connectors. What am I missing? It seemed simple enough.
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Topic - Grado RA-1 Battery -to- PSU Mod. Issues - Roastaman 11:51:03 01/10/16 (9)
- RE: Grado RA-1 Battery -to- PSU Mod. Issues - neolith 11:02:04 01/13/16 (0)
- RE: Grado RA-1 Battery -to- PSU Mod. Issues - Caucasian Blackplate 12:34:43 01/10/16 (7)
- RE: Grado RA-1 Battery -to- PSU Mod. Issues - Roastaman 08:29:58 01/11/16 (5)
- RE: Grado RA-1 Battery -to- PSU Mod. Issues - Caucasian Blackplate 11:40:56 01/11/16 (4)
- RE: Grado RA-1 Battery -to- PSU Mod. Issues - Roastaman 09:59:53 01/12/16 (3)
- RE: Grado RA-1 Battery -to- PSU Mod. Issues - Awe-d-o-file 20:29:17 02/06/16 (0)
- RE: Grado RA-1 Battery -to- PSU Mod. Issues - Caucasian Blackplate 14:15:06 01/17/16 (0)
- RE: "Why so much variation?" - 1973shovel 06:07:42 01/14/16 (0)
- When you said "connected in series" - 1973shovel 05:30:34 01/11/16 (0)
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