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<blockquote data-quote="アニメMrDanquer" data-source="post: 8889625" data-attributes="member: 692984">Recently I discovered my father has this AMA 550 system[ATTACH=full]62917[/ATTACH]The middle one is the power supply, it has a 12V input, and a REM, but I can&#039;t find a GRD anywhere, and it has 5 33V outputs for AMPS[ATTACH=full]62922[/ATTACH][ATTACH=full]62918[/ATTACH][ATTACH=full]62924[/ATTACH][ATTACH=full]62921[/ATTACH]And the other ones are all monoblock power amps.&nbsp;[ATTACH=full]62923[/ATTACH][ATTACH=full]62920[/ATTACH]There is also a fuse box in the right side of the power supply, with a blade to 40A.These are very old, my father doesn&#039;t know any specs, and there is no specs on the chasis, there is no box or user manual, I tried using ChatGPT, got lots of info, but none of it is 100% sure, he told me that each amp is probably capable of 100W RMS, but IDK at what resistance, and that the power supply can probably do about 450W total.Does anybody know anything about these?</blockquote>

[QUOTE="アニメMrDanquer, post: 8889625, member: 692984"] Recently I discovered my father has this AMA 550 system [ATTACH type="full" alt="IMG_1182.jpg"]62917[/ATTACH] The middle one is the power supply, it has a 12V input, and a REM, but I can't find a GRD anywhere, and it has 5 33V outputs for AMPS [ATTACH type="full" width="193px" alt="IMG_1183.jpg"]62922[/ATTACH][ATTACH type="full" width="193px" alt="IMG_1178.jpg"]62918[/ATTACH][ATTACH type="full" width="195px" alt="IMG_1181.jpg"]62924[/ATTACH][ATTACH type="full" width="194px" alt="IMG_1179.jpg"]62921[/ATTACH] And the other ones are all monoblock power amps. [ATTACH type="full" width="238px" alt="IMG_1184.jpg"]62923[/ATTACH][ATTACH type="full" width="238px" alt="IMG_1172.jpg"]62920[/ATTACH] There is also a fuse box in the right side of the power supply, with a blade to 40A. These are very old, my father doesn't know any specs, and there is no specs on the chasis, there is no box or user manual, I tried using ChatGPT, got lots of info, but none of it is 100% sure, he told me that each amp is probably capable of 100W RMS, but IDK at what resistance, and that the power supply can probably do about 450W total. Does anybody know anything about these? [/QUOTE]

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