Question about Alpine PDX-1.1000 1000W x 1 Car Amplifier Car Audio Amplifier

1 Answer

Blown fuses I have an Alpine pdx 1.1000 pushing 2 Alpine 12" type R subs, and my power supply also feed an Alpine MRP-F450 for the front speakers. I have a 100 amp fuse at the battery using 4 gage wire to a Tsunami 2-farad cap then 8 gage to each amp. As I turn it up, the 4 20-amp fuses blow on the PDX 1.1000 amp. Also, my lights dim with the bass.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Master
  • 1,139 Answers
Re: 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.

Posted on Sep 03, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

I just install my new setup ,i have 1 pdx f4 ,1 pdx m12 and 2 sub 10''type r and my pproblems is when i put a song the pdx f4 lights become red and my mid and tweeter cut ...

Disconnect all speaker leads from the PDXf4 - test. If the amp turns on and says on ok - then turn off, and attach one speaker lead at a time until it turns off. When it does check that speaker and the speaker wire to see if it is blown, shorted out etc.

Feb 06, 2011 | Alpine PDX-F4 Car Amp

1 Answer

Sub will drain all the sound off the front speakers

if you have both amps connected to the same power wire this will another power wire to the alpine and this should solve the problem.

Jul 25, 2009 | Rockford Fosgate Punch 301S Car Audio...

1 Answer

PDX-1.600 no sound from speakers

check your coil wires on the back of the sub

Apr 11, 2009 | Alpine PDX-1.600 Car Audio Amplifier

1 Answer

Alpine PDX 1.1000 low power output - sub not loud

system not configurate properly go to a pro and let them do for you you have good equipment just need to put together rite.for wht you have you can get better sound than that,,good luck

Mar 30, 2009 | Alpine PDX-1.1000 1000W x 1 Car Amplifier...

1 Answer

Wiring diagram for Alpine MRP-F300

From the Crutchfield site:

Owner's manual

You'll use fig.8 for the front speakers and fig.9 for the subs.

Sep 03, 2008 | Alpine MRP-F300 Car Audio Amplifier

1 Answer

Problems with MRP-M650

as far as it staying on it may have been wired to your hot unstead of your remote on your radio

when it runs wide open it gets hot
how are your gains

I have an alpine and I just hooked up jl 12 w3s and it kinda j did what yours did
it played.. hit hard then no subs.. my mids and highs platyed, but until I would turn off the car and restart the radio the subs immediately came on and the subs are only connected to this aplpine mrp m 650 amp

what speakers and what ohm did they wire it too?

i think my problem was I was overloading my amp feeding it a 2 ohm load or a one ohm load and it was shutting down my subs.. protectection I suppose?

Jun 02, 2008 | Alpine MRP-M650 Car Audio Amplifier

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.

Sep 18, 2007 | Alpine PDX-1.1000 1000W x 1 Car Amplifier...

1 Answer

Alpine pdx 1.1000 amp

These subs are dual voice coil I'm sure...make sure they are putting a 2 ohm load on the amp total, and also set your gain and frequency setting right. Set the frequency around 85 or 90, make sure the lo pass filter is on. Turn the gain ALL the way down and turn your stereo to the point right before your speakers distort....then slowly increase the gain until the subs are playing at full volume. This should not even be close to all the way up, and the subs should sound accurate and bold. Turning them past this point will cause distortion, in which case you should back off the gain a bit. Distortion causes power to cycle through the amp very rapidly and can cause blown subs and blown fuses. If you do not know how to wire both subs for a combined load of 2 ohms, please let me know what type of subs you have.

Aug 05, 2007 | Alpine PDX-1.1000 1000W x 1 Car Amplifier...

Not finding what you are looking for?
Alpine PDX-1.1000 1000W x 1 Car Amplifier Car Audio Amplifier Logo

234 people viewed this question

Ask a Question

Usually answered in minutes!

Top Alpine Car Amplifiers Experts

Tygh Duval
Tygh Duval

Level 2 Expert

290 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1128 Answers

Are you an Alpine Car Amplifier Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides