Power amp up blue light comes on and no sound comes out what dose this mean
SOURCE: Blinking Led power light
I have a alpine MRP-M350 700 watts class D... i will ask if it can support 2 subwoofer a 1200 watts 10" JBL subwoofer?
SOURCE: Blown fuses
This is a sign the you have poor voltage regulation. Which may mean that you are taxing the electrical system of your vehicle. I would suggest you adding a secondary electrical supply for you audio system. This can be done by adding an extra alternator and voltage regulator and battery supply. This will allow you to drive your audio system without having it (power supply) split between the vehicle and the audio system. The fact is your system is drawing to much current for the unit and your vehicle. You are blowing the 20-amp fuses which means the the amp is creating a currnet draw which is past the rated value of the fuses, which if done too many times could damage the power amp components in the unit. I would also check the ohmage reating on the speakers connect to the unit since you may have the wrong impedance which may also cause excessive current draw and actuate some sort of overcurrent protection.
SOURCE: Alpine MRP-M650 : Power LED turns on but no sound
is the remote lead properly connected to the head unit? if the power led is on then the power cable and earth must be good, check the remote lead 2 your head unit first, if thats all good try looking at the amp to see whether theres a small switch to adjust the output going to the subs, if its very low or right off then nothing will be going through to the subs. if its on high and fine it only realy leaves the neg and pos inputs from the amp 2 the subs.
cheers, adam
SOURCE: Amp light on , but subwoofers stop working after 5 seconds
check sloder conection in amp. if your amp is in trunk it copuld have over heayed and mealted the metal.
hope this helps.
caution
About Power supply wires (MRP-M1000 only)
• 21mm2 is the minimum power and ground cable size
that should be used to connect this amplifier. The
length of these cables should not exceed 1m to assure
safe operation.
• If the length of the power and ground cables exceed
1m, or if you connect more than one amplifier, a distribution
block should be used with 33mm2 or 53mm2
power and ground cables depending on the length
necessary. Ensure that you install a correctly-rated
in-line fuse on the power cable near the battery positive
post.
RMS Continuous Power (at 14.4 V, 20 - 200Hz)
• Per channel into 4 ohms (?1% THD+N)
MRP-M1000 ......................................... 600 W x 1
MRP-M500 ........................................... 300 W x 1
• Per channel into 2 ohms (?1% THD+N)
MRP-M1000 ....................................... 1000 W x 1
MRP-M500 ........................................... 500 W x 1
Total MAX Power
MRP-M1000 ............................................. 1900 W
MRP-M500 ............................................... 1100 W
S/N Ratio
• IHF A Weighted, Reference: rated power into
4 ohms .................................................... 100 dBA
Input Impedance
• RCA IN .................................................. 20k ohms
• SP IN .................................................... 40k ohms
Frequency Response (200Hz/ -3dB) ....... 20 - 200 Hz
Crossover Frequency .......... 50 - 200 Hz (-24dB/oct.)
Input Sensitivity (RCA IN) ............................ 0.2 - 4 V
Dimensions
• Width (Heat Sink/Footprint)
MRP-M1000
......... 320 mm (12 - 19/32")/380 mm (14 - 61/64")
MRP-M500
............... 210 mm (8 - 17/64")/270 mm (10 - 5/8")
• Height ..................................... 60 mm (2 - 23/64")
• Depth .................................... 242 mm (9 - 17/32")
Weight
MRP-M1000 ................................................ 4.2 kg
MRP-M500 .................................................. 2.7 k
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