20 Most Recent Alpine PDX-1.1000 1000W x 1 Car Amplifier Car Audio Amplifier Questions & Answers

Hello thefatman69e,

The Alpine PDX-1.1000 is a physically small amp to produce the power that it does. The result is that it has less physical area for heat to dissipate. Running at or near it's maximum output into a 2 ohm load, it needs some serious airflow to keep it cooled down. I'd look for some way to get more air to it.

Hope this helps.

Hello sir good day. Try to check this link it may give you an idea. http://caraudio.manualsonline.com/manuals/mfg/alpine_electronics/pdx-4.100m.html best regards.

check the fuses, take and ohm meter (multimeter) and read out the sub. check your rca output at the head unit with some earphones and an rca to earphone adapter.

1.take it back to who installed it and ask them to do it right. 2.your sub may be wired incorrectly 3.your sub may be cooked.

possably, did you get it professionally fitted? they have lifetime warranty on install,

fuse may be blown on the amp

YOU ARE PROBABL;Y RUNNING THE AMPLIFIER INTO CLIPPING, WHICH IS A DANGEROUS OVERLOAD CONDITION THAT REALLY TENDS TO HEAT UP THE VOICE-COILS OF THE SPEAKER. IT IS QUITE POSSIBLE TO BURN A 1000 WATT SPEAKER WITH A SMALL 500 WATT AMPLIFIER IF IT IS ALLOWED TO RUN INTO SEVERE CLIPPING. YOU MUST LEARN TO UNDERSTAND WHEN THIS OCCURS BY CAREFULLY LISTENING TO THE MUSIC AND TONES AND RECOGNIZE THE NASTY SOUND OF CLIPPING THE AMPLIFIER. THERE IS SIMPLY NO SAFE WAY, AT THESE POWER LEVELS, TO SIMPLY TURN THE GAIN UP AND THROW THE RADIO INTO FULL THROTTLE. WHILE IT WILL SOUND AS IF THIS OFFERS THE HIGHEST VOLUME, IT IS NASTY AND THE SPEAKER WILL NEVER ACCEPT THIS CONDITION WITHOUT EVENTUALLY FAILING. THIS APPLIES TO ALL AMPLIFIER/SPEAKER SETUPS. LET ME KNOW IF I CAN BE OF FURTHER ASSISTANCE.....V

The most likely suspect would be an internal fault on the Alpine PDX-1.1000. So other than verify the 2 ohms per speaker using a continuity tester (DVM / VOM), all others involve opening the Alpine amp to effect repairs.
Options then are: to consider a DIY (do-it-yourself) repair if and only if you're very familiar with electronic components & circuitry, use of a DVM/VOM and a soldering iron/station.
Access to a Service Manual or at the very least, a schematic diagram would be a necessity (although a challenge in itself) as detailed procedures, test points diagnosis flowchart would be outlined though should you be uncomfortable with a DIY, perhaps your best bet would then be to seek the services of an authorized Alpine Service Center (specially if still under warranty) or a qualified professional.
Now referring to http://www.fixya.com/support/t1817194-stuck_in_protect_mode_phoenix_gold_ryval

"1. Does your amp have a high input port? This is where instead of RCA's you feed it speaker output from your head unit? 2 If so try this and see if the magic happens.. If it doesn't your screwed and the problem is internal most likely in the input stage and that's why your having to "fool" the amp.
3. Also take off the remote turn on wire and make a short little jumper from the remote turn on to the B+ on the amp. Yeah the amp will blaze on but see if it changes the output."

Go to rockfordfosgate.com they have a woolfer wiring wizard that can help you make sure your amp is under the correct ohm load, if your woolfers are wiring up on a 1 ohm stable load the amp will overheat and go into protection mode and cut out.. Need the woolfers on a 2 or 4 ohm stable load, and the amp should run fine with a capacitor, and some good 0 to 2 guage cable, plus a good battery and alternator to feed it

Try running the second amp by itself, there's a variety of things that could be the problem. If the second amp runs well by itself you might have a problem with you line outs from the first amp. But chances are you're second amp won't run well by itself, this could be because of a bad ground or your amp could be damaged. Another thing is connections to the new stereo, if your rca's aren't connected good you'll get a muffled system, also make sure the remote wire is properly attached to the second amp. If you can't figure it out take it to a professional to have it looked at. hopw this helps you

1. check your B+ wire and make sure the fuse is good, and your ground wire and are you certain that the remote turn on is good?
2. If you have 3 subs runninng on the amp i hope those subs are 8ohms and you wired them in parelell to give an impedance of 2ohms. Let me know. Mark @ Sounds Good to Me.. tempe, az

Hello rsnyder_223,

As long as the gain is adjusted properly for the input, there should be no problems with the amp.

The head unit preamp output is probably a little low or there is too much voltage drop on the RCA's. It doesn't take much of a drop when you are working with such a low level to begin with. That's one reason that Alpine gives you the option to select an input level.

It's also possible that the input sensitivity of the Alpine is slightly high. Electronic components usually have a nominal value and their actual value can range up to 20% from that nominal. But again, you have a gain adjustment to insure that the amp is not overdriven. Make sure that it's set so there's no distortion and you should be OK.

Hope this helps.