Question about Alpine MRX-M50 - Monoblock 500 Watt RMS Subwoofer Amplifier
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.
Posted on Jan 05, 2014
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Posted on Jan 02, 2017
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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