Question about Alpine MRX-M50 - Monoblock 500 Watt RMS Subwoofer Amplifier

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Subs cut out when bass hits - Alpine MRX-M50 - Monoblock 500 Watt RMS Subwoofer Amplifier

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Assuming that both subwoofers are working fine: check what voltage output your headunit has (RCA output voltage) and match it to your amplifiers input sensitivity (GAIN) eg: if your headunit has 4 volt outputs then on this particular amplifier your gain knob would be completely to the left as if in the off or 0 posirion.

if u are not sure of your headunits output voltage you could check the manuals specification page or send me the barand and model number of your headunit and I will check it for u.

hope this helps. let me know if I can assist you any further.

.......andy.......

Posted on Jan 05, 2014

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SOURCE: amp cuts off

You may have a problem with the power source feeding the amp. You need to check the voltage across the amplifier's B+ and ground terminals when the amp is playing/cutting off. If it's dropping below ~11 volts, you need to determine why it's dropping so low.

Posted on Sep 19, 2007

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What would cause my fossgate t1500 to shut off everytime the bass hits hard I have two t12s that it pushes


Sounds like your amp isnt powerful enough to power your subs, whats the wattage of your amp and both subs? Its shutting off when hard bass hits to protect itself from blowing, a good feature as a blown amp means a new one. an amp should always be more powerful than the speakers / subs you are connecting to it. for 2 500w subs your looking at a 1200w amp minimum.

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I have a few problems. i have 2 amps and 4 subs. first problem is when i connect one amp to my speakers it just hisses and crackles. this never happened before. when i turn up the gain to try and get...


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Amp cutting out when bass hits


With an amp like that you can not pull enough power from you cars battery alone. That is why when it hits hard it drains the amps from your battery and you amplifier cuts out. The light on the amplifier most likely dims when the bass hits. You need to get a capacitor. They are easy to hook up on the main power wire. You can get one from http://phatcaraudio.com/capacitors.html or get a used one off ebay.com. Good luck

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I plugged int he rca's but he the lowest sounding bass possibe


kicker subs arnt ment to hit the lowest bass, unless you go spend a **** load of money, im talking 3000 wat amp, ant some 15' or bigger subs. the most commen kickers are 12' subs, so im asuming you have 12' subs, if not, this (said lightly) should work. try turning the bass boost screw on the amp to the middle of its turning range. this will offer the greatest balance between high and low bass. if you want more low bass, turn it past half. if you want more high bass, turn it down. i have mine set to mid range, but i also recently purchased 2 18' kickers. with every new set of subs, you should spend at least 15 min tuning the amp to get the best performance. every sub is different. hope this helps, good luck.

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Sony Xplod XM-1652Z Car Audio Amplifier cuts out when turned up loud


The best thing to do is to get a amp that is more watts than your subs, not the other way around, speakers are known to handel a lil more power but amps cant produce more power than they are capable of... your ground wire should be thick also, say 6 to 8 mm or so, and its best to put in a cap and an equalizer.
Cheers

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2 Answers

Amp cuts off


You may have a problem with the power source feeding the amp. You need to check the voltage across the amplifier's B+ and ground terminals when the amp is playing/cutting off. If it's dropping below ~11 volts, you need to determine why it's dropping so low.

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My amp turns on then the music cuts in and out


check your main ground, if possible try to read voltage across making sure 12-14v present with load and some signal.

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