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Alpine mrp-m850 will power on but no power to sub
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<blockquote data-quote="keep_hope_alive" data-source="post: 7106761" data-attributes="member: 576029"><p>you want to measure VAC out of the amp between the terminals - you shouldn't have any DC voltage going to the sub. measuring DC voltage between outputs and chassis is just an issue of relative voltage.</p><p></p><p>verify a connection didn't come loose during the swap - measure resistance at the speaker wires before they connect to the amp.</p><p></p><p>call Alpine for the nearest service center - you'll have to ship it to them and it will take them a month or so (typically).</p><p></p><p>good luck in Afghanistan - and thank you for serving our country.</p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 7106761, member: 576029"] you want to measure VAC out of the amp between the terminals - you shouldn't have any DC voltage going to the sub. measuring DC voltage between outputs and chassis is just an issue of relative voltage. verify a connection didn't come loose during the swap - measure resistance at the speaker wires before they connect to the amp. call Alpine for the nearest service center - you'll have to ship it to them and it will take them a month or so (typically). good luck in Afghanistan - and thank you for serving our country. [/QUOTE]
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Alpine mrp-m850 will power on but no power to sub
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