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<blockquote data-quote="gud" data-source="post: 8723756" data-attributes="member: 672522">Update: I bought a brand new amp and I&#039;m still having issues. The amp powers on yet goes directly to protect mode. The manual claims protect mode means one of three things: the amplifier overheated (this is not the case), it short circuited (which doesn&#039;t seem likely because the fuse is in tact), or the speaker impedance is too low.I&#039;m lost here because I purchased the same amplifier, just an upgraded model. Same specs and whatnot. The RF R2-1200x1 to be exact. My amp is wired to my sub at 2 ohms pushing 800W which it can handle with ease, and I have been running for the past four years without issue. So I am confused how the impedance would be too low.I haven&#039;t touched anything regarding the speaker wiring itself as in I haven&#039;t replaced any wiring, though I have tested with a digital multimeter the connection from battery to amp (check), connection from amp to sub (check), connection from head unit to amp (check). All seem to work fine, though I&#039;m not sure what readings I should be getting, but they all do give off power. No wires are hanging out, squished between anything, etc. All ground connections are in tact.I am still lost, and out the money I just spent on this amp LOL... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown&nbsp; &nbsp; :(" loading="lazy" data-shortname=":(" /> Any other ideas before I take it to a second shop?</blockquote>

[QUOTE="gud, post: 8723756, member: 672522"] Update: I bought a brand new amp and I'm still having issues. The amp powers on yet goes directly to protect mode. The manual claims protect mode means one of three things: the amplifier overheated (this is not the case), it short circuited (which doesn't seem likely because the fuse is in tact), or the speaker impedance is too low. I'm lost here because I purchased the same amplifier, just an upgraded model. Same specs and whatnot. The RF R2-1200x1 to be exact. My amp is wired to my sub at 2 ohms pushing 800W which it can handle with ease, and I have been running for the past four years without issue. So I am confused how the impedance would be too low. I haven't touched anything regarding the speaker wiring itself as in I haven't replaced any wiring, though I have tested with a digital multimeter the connection from battery to amp (check), connection from amp to sub (check), connection from head unit to amp (check). All seem to work fine, though I'm not sure what readings I should be getting, but they all do give off power. No wires are hanging out, squished between anything, etc. All ground connections are in tact. I am still lost, and out the money I just spent on this amp LOL... :( Any other ideas before I take it to a second shop? [/QUOTE]

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