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16th May 2006, 08:11 PM
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#1 |
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diyAudio Member
Join Date: Mar 2004
Location: carlsbad, CA
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musical angel modified marantz 7 preamp schematics
Hi All,
Recently, one channel of my relatively new modified marantz M7 preamp broke. I wondered if anyone has a schematic on this amp made by musical angel, which was frequently listed in Ebay. I have a jpeg which is very hard to read and I could not get the supplier to put up a better one. Any suggestion on modding this amp for better performance while I am repairing it. It started out very static-ky and then no more sound, just some hum. on the left channel. Any help is appreciated. RC |
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16th May 2006, 11:58 PM
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#2 |
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diyAudio Member
Join Date: Nov 2002
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Is there a chance that you could draw out the schematic and list the tubes ? I can't make out the schematic you posted.
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17th May 2006, 12:08 AM
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#3 |
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diyAudio Member
Join Date: Mar 2004
Location: carlsbad, CA
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jpeg schematics
Unfortunately, that is all they gave me on the ebay listing. I know the tube should be 12AX7 and the rectifier tube should be the standard type. I would try to trace that out when I have time. it would be at least a couple days before I can find time to get to it.
I found this one from a website and I wondered if it is similar. |
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