alpine amp reliability
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=91194
Printed Date: May 21, 2024 at 1:48 AM
Topic: alpine amp reliability
Posted By: belcom
Subject: alpine amp reliability
Date Posted: March 02, 2007 at 12:33 PM
Someone stated that Alpine amps "melt" at anything less than 4ohm. I am planning to run my MRD-M605 at 2ohm pushing a 400-500wrms subwoofer. Should I be concerned?
Replies:
Posted By: DYohn
Date Posted: March 02, 2007 at 3:12 PM
The MRD-M605 is a mono subwoofer amp and is stable at 2-ohms. ------------- Support the12volt.com
Posted By: forbidden
Date Posted: March 02, 2007 at 4:27 PM
As such, it will not melt.
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Top Secret, I can tell you but then my wife will kill me.
Posted By: roo-dog
Date Posted: March 02, 2007 at 5:20 PM
'melt'- well, the only time i have seen amps get hot enough to melt any part (wire connections, board, etc), it was almost always due to insufficient power to the amp- power/ground wires too small or poor connections, or not enough current supplied from the alternator. the only other reason would be if you were just simply pushing the amp too hard (gains set too high). at two ohms, the amp will require more current to it (can't make power where it doesn't already exist), and may also run warmer, but shouldn't ever get hot enough to melt or burn anything. if properly installed and adjusted, that amp should run just fine at 2 ohms.
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Posted By: aznboi3644
Date Posted: March 02, 2007 at 6:55 PM
belcom wrote:
Someone stated that Alpine amps "melt" at anything less than 4ohm. I am planning to run my MRD-M605 at 2ohm pushing a 400-500wrms subwoofer. Should I be concerned?
That person has absolutely no knowledge about car audio
Posted By: aznboi3644
Date Posted: March 02, 2007 at 6:55 PM
belcom wrote:
Someone stated that Alpine amps "melt" at anything less than 4ohm. I am planning to run my MRD-M605 at 2ohm pushing a 400-500wrms subwoofer. Should I be concerned?
That person has absolutely no knowledge about car audio
Posted By: tcss
Date Posted: March 03, 2007 at 12:06 PM
Hi guys, it's been a while. I've had some bad experience with the 605s at a 2 ohm load. They tend to shut down when run hard, specifically with a JL 10" W6V2 which when parralled actually shows a 1.9 ohm load. I will be leaving this business soon, it's been fun, Bob
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There is no such thing as free installation!
Posted By: belcom
Date Posted: March 03, 2007 at 12:17 PM
well yes, the 10w6v2 is what I was looking to get. I can pick one up locally for about $200 CAD. So I thought it'd be a good deal and better than my 10" Type R (older 300wrms version). By "melting" I didn't mean physically burn or melt wiring or any other components. Just like Bob here mentioned that it might have problems like shutting down and overheating. And it looks like it might.
Posted By: soultinter
Date Posted: March 03, 2007 at 1:39 PM
can you actually tell by LOOKING at it??
Posted By: tcss
Date Posted: March 03, 2007 at 1:58 PM
Semantics. I've just had it happen more then once.
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There is no such thing as free installation!
Posted By: aznboi3644
Date Posted: March 03, 2007 at 4:08 PM
tcss] wrote:
Hi guys, it's been a while. I've had some bad experience with the 605s at a 2 ohm load. They tend to shut down when run hard, specifically with a JL 10" W6V2 which when parralled actually shows a 1.9 ohm load. I will be leaving this business soon, it's been fun, Bob
That is prolly 1.9 ohms DCR...not accounting for impedance rise
Posted By: tcss
Date Posted: March 03, 2007 at 4:35 PM
The fact is , it shuts down for whatever reason.
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There is no such thing as free installation!
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