Question about Sony XM-504Z Car Audio Amplifier

Open Question

Amp enters protection mode at high volume

Hi! I have 4 speakers (2 6x8 50rms and 2 6x9 80rms pioneer) hooked to this amp, a DEH-4800mp player and a 10" woofer hooked up to a 760w pioneer amp. At high volume, and even at normal levels, the amp enters protection mode and it goes off (only the subwoofer keeps playing) and on until I turn down the volume. If tried changing the gain levels from one side to the other, and the same thing happens, only at different volumes. Is there an easy way to check if there is a short cut on the speakers or anyways, what could else could it be? Because even the factory cd player would go higher. I've tried running it cold and the same thing happens so I've checked out a temperature issue, although it does heat up quickly at high volume.

Posted by on

6 Suggested Answers

SOURCE: Sony Explode 4 channel amp in protection mode

sometimes if the power cable and the ground cable are frayed and touch it will short out the amp temporarily check to make sure allof the wires aren't touching each other

Posted on Aug 14, 2007

  • 631 Answers

SOURCE: sony xplod 500w 4/3 channel

If the speaker is a 4 ohm DVC (two 4 ohm coils), you can't wire it to get a single 4 ohm load. Try connecting one coil to each of the two rear channels. It may not be as loud but the amp should operate without going into protection.

If the two 4 ohm coils are in parallel, the amp is driving a 2 ohm mono load. That's probably why it's shutting down.

Posted on Apr 26, 2008

  • 5 Answers

SOURCE: 1000 w sony xplode works at low volume then red lights at volume5

Most likely one of your subs are blown, or the Ohm's are too low for the ampliphier. Try hooking up one speaker at a time to the amp and see if it does the same thing. If it shuts off on one of the two speakers, that speaker is most likely blown.

Posted on May 13, 2009

  • 18 Answers

SOURCE: sony xplod amp(XM-1652Z ) power/protect light

if your amp is overheating your sub is needing to much power that the amp doesnt have.
if its cutting out and the red light comes on you need to check the wiring. nothing not even the tinyest speaker wires can be touching.
proper wiring would be your best bet.
but i would upgrade amps.
cheap bang isnt reliable.

Posted on May 27, 2009

  • 242 Answers

SOURCE: amp turns on fine hooked up to factory cd player

it means there not enough power going to the amp.or the power wire inside the amp has melted resalting in a bad conection

Posted on Dec 29, 2009

  • 31 Answers

SOURCE: the overcurrent light on my sony xplod amp

Contact eric @ Capital Audio & Electronics Repair in Tallahassee,Fl 850-339-1130 we repair all namebrands & models

Posted on Mar 20, 2010

Add Your Answer

0 characters

Uploading: 0%


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


1 Points

Related Questions:

2 Answers

So i have installed my amp, epicenter, all wiring is done, hace great ground.. But once i turn my car on to sound check everything starts fine but after turning up the volume a bit.. My amo goes into...

It sounds like you have your gain to high. best way to solve this is by turning the gain way down to - or lowest number , then turn everything on and upto the volume you desire, then slowly up the gain. also avoid using bass boost, I agree it sounds great but it puts strain on the amp and shortens life in the amp. with the bass boost off, you can adjust others (not the gain) to get bass.

Hope this helps

Jan 26, 2013 | Car Amplifiers

1 Answer

I have speakers that have 60wattsrms@4ohms if i hook them up to this amp (xm-zr704)will i blow them?

Surlely you can connect these speaker to this amp . Your amp will deliver 150w at 4 ohms if you use 4 speaker setup. So keep in mind that, don't go for a high volume level. If you need higih volume level go for a speaker which will handle 150 w.


Mar 08, 2011 | Sony Xm-zr704 Car Amplifier Amp 4/3/2 Ch...

1 Answer

Bass cut off when volume is too high

When an amplifier shuts the Bass off that means its going into protection mode otherwise it will burn out the outputs. One way is to turn your gains down, Pioneer amps are not the best amps for bass out there, they are more for car speakers, I personally wont use a pioneer amp to run my subwoofers especially if they are hard driven subs like JL , Kicker Solo's and MTX subs. But for now just turn the gains down to 3/4 and that should help u, you can also install a fan to keep your amp cooler, if this never happened before in 5 yrs and now it does then that means your amp is just tired and the inside components are overheating easily, thats common with Pioneer and Sony amps.

Good luck buddy.


Jun 12, 2010 | Pioneer Car Amplifier GM-5100T - 2CH 760...

3 Answers

My nitro bmw-486 amp is in protect mode how can I

Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. Hopefully you have warranty De .A thumbs up would be greatly appreciated if this answer is helpful to you. nitro-bmw-486-amp-in-protect-mode-lv2kkrmxrai4iihdvw4m3np2-1-0.jpg

Feb 24, 2010 | Nitro BMW-486 Car Audio Amplifier

1 Answer

Xm-2002gtr amp keeps kicking protect light on

check your amp and speakers and make sure their both hooked up 4 ohm instead of 2 ohm because if you have 1 set of voice coils on your speakers they can only be hooked up four ohm and not bridged to your amp because if you keep trying this you will lock up your speakers if the speakers are only 4 ohm than just hook them up regular to each channel on your amp if your trying to brigde four ohm speakers to your amp it will keep going into protect or worst case scenario you will fry your speakers and you can check your ohm with a ohmmeter trust me my brother owns a stereo shop

Oct 19, 2009 | Sony Car Amplifiers

1 Answer

No Audio when disconnect from external amp and hook to speakers

In a radio like your Pioneer and all similar units there are always a pre-amp circuit that feeds a power amp circuit,In some players there are more than one pre-amp circiuts. It is possible and highly probable that the power amp circuit in your Pioneer is shorted, so you still get some audio output , but very little. I believe this is your problem and I suggest that you bring it to a repair shop for an estimate or replace the unit. Good luck and please rate this answer, Thanks.

Apr 12, 2009 | Pioneer Car Amplifiers

2 Answers

Aplifier gettieng protection signal and excess heat

for that amplifier, it is recommended that you are driving a 4 ohm load. It can drive a 2 ohm load, but will produce more heat and shorten the life of the amplifier. Is the subwoofer a single or dual voice coil? You'll want to make sure that you're not running below a 2 ohm load or you'll always go into protection. Also, try disconnecting the speaker wire completely from the amp so nothing but power is connected. If the amplifier is still in protection mode when no speakers are hooked up, then the amp is bad and will need repair or replacement.

Sep 28, 2008 | Autotek Car Amplifiers

1 Answer

Prot. light at High vol. (forget Bass CD)

You may have the speakers wired for the wrong impedance.

How many ohms per voice coil?

How many voice coils per speaker?

If the speakers are DVC, are the coils of each speaker wired in series or parallel?

Are the speakers bridged on the amp or one per channel?

Jul 06, 2008 | Lanzar VIBE266 Car Audio Amplifier

1 Answer

Amp went into protect, but front speakers sound distorted too

If the amp still goes into protect mode, the easiest thing to do is disconnect the RCA cables from the amp and see if still goes into protect mode (after turning off/on). If it does, the issue lies in the amp or the wiring to/from the amp (most likely case). Check to make sure no speaker wires came loose and touched +12V or ground (car body). From the sound of it, my guess is something internal to the amp died and will need repair.

Mar 22, 2008 | Car Amplifiers

1 Answer

My amp keeps going into protective mode.

try to lower the SLA option on ur deck maybe the amp is pulling to much current from the battery try putting a battery with more AMPS

Jan 06, 2006 | Jensen LXA400 Car Audio Amplifier

Not finding what you are looking for?
Sony XM-504Z Car Audio Amplifier Logo

Related Topics:

100 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Car Amplifiers Experts

Tygh Duval
Tygh Duval

Level 2 Expert

290 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers


Level 3 Expert

56631 Answers

Are you a Sony Car Amplifier Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides