Question about Alpine MRD-M300 Car Audio Amplifier

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My amp not workin

Hi, when i try to play ma amp it comes on but it does not play i checked every thing then my friend sayed i prolly burned the channel. how do i fix it are how much will it bee ? were can i send i t to be fixed ? thanks

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  • hylife2008 Nov 15, 2008

    My amp turns on but the protection light work go off.. What could it be?? Ive tried more and different ground. It worked when I went in the store and didnt work when I came out and i would really like it to work..

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Try using some sand paper where you have the ground, grounded, it that doesnt work i would say one of the transistors inside broke off. to know if that happened shake it a little to see if you have any rattle if so you or someone you know who can solder and get it put back on

Posted on Jan 21, 2009

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Or make sure your ground wire is grounded properly.it's very important!

Posted on Sep 09, 2008

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If the amp doesn't play anything but comes on you probably don't have an input signal try to get a different input signal

Posted on Aug 22, 2007

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Posted on Jan 02, 2017

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2 Answers

I cant hear any voices on dvds played throught the dvd system just the bass and background music its all plugged in correctly and set on clear help!


Hi,
please double check your wiring again as if you cross the polaritys (+ and -) you put the audio signal out of phase, thus casing cancellaion of things such as voices.

+ to +
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NOT

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I have a volfenhag zx-8400 amp. i dont have a manual. whats the proper way of conecting amp? its mounted on my speaker box, which is ported, 12' volfenhag 2500 watts. on the side of amp it had voltage...


The voltage prolly says like 100Mv-2v, it doesn't really matter, just know that that the lower you turn it the harder it bangs. The X-over depends on where your box is tuned, crank the knob down too about 40htz and you'll prolly be good, just don't turn it lower than your box's tuned frequency. And your rca's go to line input. And there shouldn't be a problem with mounting your amp vertically, you prolly just had a bad connection. Hope this helps if you have more questions please ask...

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Ma psp is workin slower n its shaking


its shaking from spining the disk faster to try reading it could mean the lazer eye is dirty, same thing with load times, hard time reading the UMD means slower load times for games.

(DO AT OWN RISK!!!) Qtips are a psp owners friend. get some water or rubbing alcohol on 1 end of the Qtip (not alot, just barly damp, not driping wet) find a nice light to so you can see the lazer eye in the disk load area , slide the damp side of the Qtip in there and wipe the eye a little bit, then use the dry end to get the rest of the dust, dampness off the eye and let it sit to dry for about 10 mins or more. turn it on and try it out after the 10min or more drying time. i do this with my psp/ps2 and any other thing that useis CDs/DVDs or has a lazer eye and it usely does the trick.

hope it worked. if not you may need to take it to a repair shop.

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JBL GTO 301.1ii protect mode


Hello roets81,

Check the voltage at the amp. It's possible that the voltage is either too high (above 16V) or too low (below 8.5V). Also make sure that the amp case is not grounded. If these check out OK, the most likely cause is that the amp itself is defective and requires service.

Hope this helps.

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1 Answer

I think ma kicker kx1200.1 amp is blown or ma kicker L7 are gone


that would be the amp. sorry to say. when a wire crosses over, it sends a shock through the amp, there are a few things to try just to see if you fried the amp. the first thing to try is to move your ground to a different location. second thing to look at would be the fuses. alot of times the fuses will blow at the slightest shock. the amp will still turn on if you have an amp with 2 fuses, it just wont be getting all the power it needs, which could be causing your problem. also, it is worth the hour and a half to mount everything down in your vehicle. you might check the kicker website, because i have herd rumors that kicker offers a lifetime warranty on almost all of their products. best of luck, and i hope you didnt fry your amp.

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Apple ipod classic 160 gb


connect ipod to pc..........let itunes (make sure it the latest version) come up....your ipod icon shows up update (let itunes check if your firmware is up-to-date) if so this should do the trick.

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hi buddy see if u want to play a 3gp video in ur handset u need a software called " Real PLayer". the reason why u are not able to use 3GP is cause real player is not competeble with Series 40 Handset. so u might not be able to play it unless u find any software for it from net which is almost imp.

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