amp keeps shutting off

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pcummings32

Copper - Posts: 52

Joined: August 02, 2009

Location: Illinois, United States

Posted: August 19, 2009 at 6:22 PM / IP Logged

my friend has two MTX 12"s that handle 200 RMS each and a JH300 amp that pushes 300 RMS MONO. The amp keeps shutting down. When the system is turned on it hits for a minute or two then the amp shuts down. can anyone give me some help PLEASE

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i am an idiot

Platinum - Posts: 13,667

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: August 19, 2009 at 6:37 PM / IP Logged

Do you have any idea about the impedance of the speakers? Are they single or dual voice coil? Is the amp a 1 or a 2 channel? Do you have the amp bridged, or is it wired in stereo? What is the minimum safe operating impedance of the amp?

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pcummings32

Copper - Posts: 52

Joined: August 02, 2009

Location: Illinois, United States

Posted: August 19, 2009 at 7:22 PM / IP Logged

they are single 4 ohm VC and its a single channel amp

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pcummings32

Copper - Posts: 52

Joined: August 02, 2009

Location: Illinois, United States

Posted: August 19, 2009 at 7:24 PM / IP Logged

the amp is safe at 2 ohm and its wired in stereo( not bridged)

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DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: August 19, 2009 at 7:28 PM / IP Logged

That amp is rated to handle a 2-ohm load so it should be OK with those speakers. It is a mono amp so it is not in stereo and there is nothing to bridge. Does the protection light come on? What is the system voltage when it shuts down? What is the ground return resistance? How did you set the gain?

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amp keeps shutting off

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