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Amplifier Cutting Out? Protect Mode? No Sound? Test these!
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- Опубліковано 6 сер 2024
- When your amplifier doesn’t play sound it can be a real bummer, but many times we can solve the problem with a simple fix! In this video I show you 11 ways to fix your amplifier in your car audio system to prevent it from cutting out and going into protect mode, and the best part. These tests can be easily done with an inexpensive multi-meter. Let’s get your car audio system back up and running!
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Bravo for comprehensive troubleshooting guide!
Tells us how to confirm power, input signal, output signal, speakers, every little step you gave us a way to test.
Troubleshooting is mostly breaking down the needle in haystack into smaller and smaller haystack.
Divide and conquer. Exactly like how you showed us how to check for power, then if that is problem, what to do next. Next step to make haystack smaller. Trace cable. Check fuses, etc.
So - this just completely spared me!!! First - the cheapest multimeter I found that looked like yours was $30 at Lowes. But it doesn’t matter because your test helped me pinpoint that my remote wire was not receiving proper voltage. Come to find out, my floor trim was pinching the wire (I know, rookie mistake). SO GLAD I found this video - your videos always help me and this time was no different!!!!
Thank you helps out alot had a problem with my LC2i remote out not putting more that 12v
Super clear and informative on troubleshooting , thank you !
Great video! Very good info and great UA-cam channel! Thanks Mark!
Thanks for this video. It helped me a lot. All your videos are very explicit. From Colombia South America
Thank,s for another great video; your effort,s do not go unnoticed; PATRICK.P
Thank you for this video, much appreciated!
Mark , its always awesome and very helpful to see ur videos. Keep up the great job and hope to see more great videos.
Very helpful and descriptive! Great video!
I don't know why it was so hard to find info like this. I was looking to see if the OEM amp is supplying signal to my subwoofer but for some reason I wasn't getting voltage right at the terminals on the sub. Finally, I understand now that V squiggly is Voltage AC and that I need to test for VAC instead of VDC. Nice! Thanks for the info all in one video.
Hey Mark love the content🤙 just wondering, I have a 2019 F150 and I’m having issues with my right door speaker volume spiking up intermittently any idea what it could be? Thank you!
Thanks, I will see if I can find the problem w/ my Arc amp...
Best video on car audio testing.
Thank you so much!!!!
Hey Mark, great video as per usual, I have a weird one for ya, I have an lc7i in my car, it’s connected, full power & signal going inn & coming out, whenever I plug it into an amplifier the amp goes into protection mode & I get no sound, I’m not sure what to do, any advice, maybe a setting on the lc7i I’m unaware of?
thank you!!
Hi that's really a great video. I have underseat subwoofer. When I am turning on my vehicle and playing any song ,the volume from the speaker got very low,however when I remove my subwoofer connection,the speaker sounds get ok.what can be issue?
Thanks!
You makes awesome videos 👍🏽
Thanks Mark
Good troubleshooting video Mark. I see some ribbers on here. I guess you have to expect haters when you have know it alls who get bored easy!🤣🤣
Hey mark gotta question I got 2 15 in skar zvx in my 02 tahoe today I got rid of the bench seat and put captain seats in there so I can face the port toward the front of vehicle,i was told the subs wont get back pressure this way and mess them up is this true plz any info would be appreciated
Love the vids. Keep them up. Quick question.
When ever I hook up a fan to the amp to keep it kooler, it cuts off.
I've switched wiring , used ground as negative and hooked positive wire directly to the power splitter.
Still cuts amp off. Like it's going into protect mode.
It's an old skool Rockford 801s amp
Hmm hard to say, is the fan connected to the remote lead? It should be on it's own circuit switched on with a relay.
Hi iv got a targa 2.8kz amplifier works 100% took it to the tech my ground is fine I don't even put rcas in when I connect the amp and it goes straight into protection what else could be the problem
Thanks. Always thorough
Should there be any DC voltage from the rca output from head unit? 22 volts DC no matter the volume,the AC voltage is 1.5 to 2.5
Hi nice video but one problem I m facing is my Mono amplifier running fine when I only use MONO amplifier but when I m trying to use 2 amplifiers like one 4 channel amp and one mono amp then my amp work sometime then get off (No protection light on and no heating issue) then after some time it automatically gets on and after sometime again off then again on but when i use mono amp separately it runs all time. can you tell me either proper current is providing to run 2 amplifier or there is issue in amplifier.
please waiting for your reply
I tested the AC of the speaker's channel on my amp and they are stable but with the bridged channel I'm using for my sub it goes up and down (when playing a test tone frequency so it should stay stable). Any idea what can cause this?
what about subs output is strong then fades to where you cant even notice them? As in they hit hard and then hardly hear the subs? I have a new alternator and wires ran to the according places.
Hey do you have a video about the amp getting hot?
I just installed a full system to my stock head unit. Now my blinkers are LOUD!! and there is a constant buzz. The lower line is run away from speaker wire. Any ideas what I should check?
Funny, but I have that same D6.1200 and just started having a protection mode issue over the last few days. System was fine for 3 weeks. I’ve narrowed the problem down to my front left door mid-bass (Earthquake SWS6.5X), and here’s where it gets odd...
The amp goes I to protection the moment I begin to thread one of the 2 screws that go through my MDF baffle and into the actual door (ground). Two things:
1. Why would this become a problem after weeks of protection-free operation?
2. Why would the basket of the speaker coming in contact with a ground source even cause this?
There’s a setting on aftermarket receivers that can turn off pre amp outputs. If your speakers are getting power from an external amp. Make sure that’s on or else you aren’t gonna get any sound either.
A straight open would measure OL on a DMM, especially a Fluke. 0 ohms would be a dead short. But good solid troubleshooting techniques.
Wasn't thinking, but yeah either way there is an "O"
@@CarAudioFabrication ⁰
Hey I just bought a JL W0v3 10-inch Subwoofer what amp should I get to go with it ?
Mark...I am getting red led flash...do you have a video to find and fix issue...I have a LC-5.1300
I really appreciate your videos, they have helped me considerably with my installation. I have been buying parts from your sponsors instead of Amazon as a show of support. keep up the great content!
Great video. Do these troubleshooting tips apply to if a speaker decreases in volume occasionally?
Could very well be a protection circuit on the amplifier, could also be the amplifier getting a far too hot
Hi Mark, I have a 4 channel jbl stage a6004 560amp, I've wired up the rear speakers and added a sub both via high level input, but I seem to be getting a power drain and the speakers cut out temporarily whenever I accelerate or brake, power steering etc.. or use anything else that uses the power from the battery
I've even replaced the battery with a more powerful one. I've checked all connections, ground, remote etc and all is good
Could it be anything to do with the power cable that I'm using? Many thanks in advance
My amp on wire only has 11.3V will that make my amp go into protect mode? The amp in question is a Skar SK-M9005D amp. No external fuses. Thanks
I have an RCA connection to an underseat sub. The subwoofer is working ok but the light on the sub does not come on. Just wonder why this is as it initially worked when it was new and occasionally flashes now and then.
I have a hifonics amp and it went into protection mode I’ve done everything on this video and it still on protect mode I even changed it to another car different wire and was tested and it still on protect that mean my amp don’t work anymore??
Any idea why a stereo with integrated amp (sony ax7000) would do this? I've tried every idea on the internet but it still happens. Also happens to a different stereo I have with integrated amp as well.
Hi what would cause a 4 channel amp not get power. Reason is no music from car speakers. Fuses are good at the amp. Also when I turn key to accessories the protection mode comes on and off quickly but no power.
cant wait for that 2020 supra install, sounds awesome ma dude.
Really good video Mark. Can you do a video about wiring crossover, equalizer and amplifier together please?
Perhaps.. Can you elaborate on your question?
@@CarAudioFabrication yeah so I had this friend, he has a system where he had a cross over, an external equalizer and his amp wired to his subs, speakers and headunit and I was curious as how to do it exactly
@@CarAudioFabrication crcDfd.vzf tcggbng vokk99i88897ii98i⁹lol 9999opl989898⁹k9p
I recently blew my fuse near the battery when I installed a new subwoofer which was Much stronger than my previous sub. When testing the sub I’m guessing I went too loud because my fuse near my battery was blown. I switched it out and now my amp won’t turn on! What can I do??
installed a kicker key 4 channel amp. I have a low volume hissing noise. The noise has stable volume no matter the radio volume. The noise is still there even with the inputs disconnected and the engine off. My grounds are confirmed good. And my gain is all the way down. Also my amp chassis doesn't touch metal where it is mounted. Is there anything else i can try to remove this sound? It is not very loud but it is there and before the amp install there was no noise.Thanks.
Pro tips!
My mono block should put out 1250 watts on 2 ohm and I do get sound from my subwoofer but It's barely anything, can't hear it while driving. I measured AC volts from the speaker outputs and it's only putting out 10 volts at MAX gain! Is my amp blown?
If all speaker outputs on the amp are all grounds?. Is there an internal issue with the amp ?
I have a old Alpine amp and my fuse holder is in bad shape,the prongs are bent,the housing is cracked,surprisingly the amp is in good shape,i know the housing is soldered in,where could i find a new housing? i have a crystal clear picture of what one in good shape looks like,any input from the masters out there?i wanna save the amp, i have plenty of them, just attached to this one,lol, thank you for any input.
Congratulations for 400k 🎉♥️
I'm getting 10v from the power wire and 11 from the remote start.. what should my next step be?
I’m thinking my voltage drops are from the Hondas eld/voltage regulator system, it will not get a full voltage load at a stop for example, however, if I turn my headlights on, AC , etc.. and I’m driving, it puts out a higher voltage. Not sure what to do to keep the voltage up
What if you have no signal coming out of the rca cables?
What if my speakers are doing this and I don’t have an amplifier? My Kenwood stereo keeps saying “Miswiring DC offset error”
So my cars speakers work only the first time I connect my radio wires, and after I turn off my car and turn it on again the speakers stop working, does this fix work for this specific problem?
Thanks for the video, a lot of good information . I have a question, I just replaced my old amp for a new Pioneer GM-DX874 4 channel , I have 4 speakers and a sub . I basically connected everything as it was on my old Amp and now my sub sounds like regular speaker , if I rise the volume more than half it turns off and besides now I have a static noise as soon as I turn on the radio not even the car. I checked my wires and everything looks good, can you give me any tip on this ?
For Mark or anyone else: I have a factory Harman Kardon system (Subaru Outback). Subwoofer doesn’t work after I installed 4 ohm mids (factory was 2). Any help is greatly appreciated!
My amp is consistently in protect mode but while I'm driving it will occasionally switch out of protect mode and I can hear bass coming from my subwoofer, the voltage for my amp's power and ground is 3 dc volts is this my issue and if so how do I fix it or figure out why my amp is not receiving enough power?
Hi there. I have a dual xpr520 that cuts out on and off
All wiring is correct
Someday it doesn't shut off at all
And somedays it won't turn on. What can I try?
Bravo Mark good video topic of choice for discussion very informative
Thanks dude!
So, I just installed my amp and speakers In my car, and I'm having an issue with the amp turning on. Whenever I change where my ground wire is bolted in at In my trunk, the amp turns on for about a minute and plays. After I stop giving the car gas or shut the car off and turn it back on, the amp doesn't come back on, until I move the ground wire to a different location. I know my ground connection is good metal on metal polished so what is going on here, please help.
Audiocontrol has some good products, definitely worth buying some of their amps
Can you do a video on the speaker in and outputs are overloaded mine are and I’m so confused I’m running a 600$ amp and it’s annoying asf
Hey man, love the videos, they've really helped me setting up my sound stage. One issue I have which you may be able to advise- I have an amp in my BMW 3 series F30 (4x100w rms). I used a T harness at the HU, split speaker wires in half, one half went to a LOC which was then sent to the amp via RCAs before finally being sent back to the other end of the T harness to complete the circuit. This obviously allowed for me to use the OEM speaker wire.
The system had been working fine for a few months up until last week when my rear passenger speaker blew up (think it was the capacitor as it still functions, though I have disconnected it) and now my passenger door speaker is constantly failing, it will work for 5-10 seconds then pretty much die soon after.
I inspected the speaker and it's fine. I swapped the amp output channel for this speaker and interestingly it worked without any problems, pretty much confirming that there is no issues with the wiring.
Is it possible that singular output channels on amps can be faulty whilst the others work as intended? I'm losing my mind with this so any help would be greatly appreciated.
I'm using 4x 60w RMS Crunch Definition coaxial speakers and the link for the amp is: www.caraudiocentre.co.uk/product_m-in-phase-car-audio-ipa8704d_p-42215.htm
Thanks so much in advance
put glue on it
@A. Melbs the amp was fried, I went with a more reputable brand and been fine since
@A. Melbs yep, dang indeed
if i turn up the volume to high and my amp getting in protection mode .. so i turn off the head using .. after 5 minutes i can play it again . then got protection mode again .. and you got any issues that would could be??
HELP! Doing the Blue and Ground wire test, I’m getting 11.75 volts and my fuses are fine. How can I fix this to get 12+ volts out of here? (Power and Ground comes to 12.12 volts)
Ma ground was loose as a spruce goose. Good looking on pointing me in the right direction. My shit bumps sic now 👍
Was your amp going into protect mode but staying powered on?
So I bought a home system subwoofer, I get power to the unit and I can actually run signal through it into my studio monitors/ and successfully get sound through my studio monitors!!! but my subwoofer is just not firing at all.??? Has no sound. I have put my multimeter up to it and it is reading 3.2 ohms. Its a 4 ohm subwoofer. Can't seem to diagnose it unless that means its a bad woofer. It has a slight ruffle sound when I press it in really hard... any suggestions?
Output are good
What causes overcurrent, and how to you fix it?
What if I got only 11.3 volts at the blue wire and over 12 volts at the red wire? It's an after market retro radio and a 200a4 rockford fosgate amplifier. There are 2 speakers in front and 2 rear...no sound. It use to work fine, but has sat for 8 months at least.
I thought I blew my amp, so I bought a new one. Turns out it was a lose battery connection. But this is a bigger amp but it goes into protect mode and it doesn’t seem like it’s putting out what it should. I did notice that after the battery cable messed up that one of my subs is making a scratching noise but it still works but not as good as I think it should and I’m just confused
Can you do a video about amp guts and how everything works, that would be awesome
watch Barevids
i have brand new out of the box, enclosed subwoofers and amplifier. I’m not sure if blue means its in protection mode or does it mean it’s on. Sadly neither devices came with a manual, and i’ve been look everywhere. I cannot find anything on the amp. I even went as far as replacing both power and remote turn on wires, and still no bass. please help. 🙏🏾
Check input (rca’s) going into amp first. That way you can see if your head unit is putting a signal to the amp.
just a question i bought a cerwin vega 1200w amp thinking yeah this will give me more bass than my 600w sony xplod but when i hooked it all up the bass power was actually a little less than the 600w how can this be when 1200w is supposed to be twice the power i ended up running both amps 1 to each 15 inch sub and works well but just don't get how the 1200w has close to the same as the 600w sony is a good brand i know but i must be missing something here
I just installed a jL audio amp 4 ch and wired it all up and only the left rear speaker plays and it’s quiet. I haven’t touched any of the nobs yet what do I do?
What if everything tested good until I got to my channel's? Any tips how to fix
Have an issue with high pitch wine with my JVC dubble din from RCA output, it doesn't change like alternator wine and is present with car off/key on. It kinda sounds like 1000hz test tone. I have tryed different set of cables and multiple amp grounds
sounds a little like a ground loop.
@@bricore1535 I think I need to find a better ground for the head unit because it's only from the rca out puts.
Hi I’m have a problem with my LC-4-800 I set my gain with a SMD DD1 but as I started to turn the volume up on my head unit the amp goes into protect mode help please
My remote start wire is reading .65 vs 12 when I check it’s voltage as suggested around 2 minutes into the video. What does this mean & how can I correct this?
This is just superb, I have been researching "how to test a circuit board for a short" for a while now, and I think this has helped. Ever heard of - Giyathan Bewildering Gratification - (do a google search ) ? It is an awesome exclusive guide for discovering how to repair your electronic items like a wizard minus the headache. Ive heard some great things about it and my buddy got amazing success with it.
At 0 Ohms their actually is a connection, a short circuit that is.
What i think you are trying to say was the multimeter displaying O.L. meaning Over Load.
Than the circuit is open because the multimeter can't measure the resistance in open air ;-)
Yeah, you know what I meant. 😄
I need help! My system sounds crap and when I turn it up . It cuts the bass unless I turn it down . I thought it was the amp and I bought a new amp and it’s the same thing! It like goes to protection mode. Can it be my wiring ? When I got it done 4 years ago. It was a beast! I might have a feeling it’s my wires
Definitely could be wiring, but also if the gain is up too high it can throw it into protect as well, but assuming nothing has changed then I'd check wiring too as well as matching your gains and everything to make sure
My speaker amp goes into protection mode everytime i turn on my car & i just have to disconnect the remote wire & connect it back & i dont have any problem. Its just when i turn on the car. Would appreciate any help. Its just the speakers amp. Never had that problem with my sub amp
So the trun on wire on mine has 3 volts. How would I make it have 12
Looking for advice
I have mono block 1ohm stable
2x 12" dvc subs at 2ohm
Remote ok
Power ok 12v + and - at 13 14vdc
But amp staying in protection mode light stays red
I have turned it of and on disconnected everything and reconnect it all and then also just conected power and remote but (bass knob and rca) not connected and still a redlight how do i fix it?
Did I miss anything or are these troubleshooting tips helpful for when an amp is in protect mode ?
What is the amps is working but the power light doesn’t come on. One of the RCA’s had a bend on the end of the pen so we replace them with new RCA cables but now the power light does not come on with the RCA’s plugged in but it does work when we unplug the RCA’s the power light comes on and still works
Guys i spent 2 days trying to set up my godfor saken amp and i could not get it to turn on, but i finally realised that the Remote wire was somehow messed up and no current was getting through, i did it bois, it worka
I honestly have no clue where to start with a subwoofer build to add great sounding bass to my car.
Hello everyone✋
I have problem with amplifier, sometimes work's fine, sometimes don't. I tested everything, and only remote wire shows some problems. Voltage on this wire is approximately 8.5V, but, while I was testing it subwoofer just started working, after turn off and on car, again nothing.
Is that low voltage on remote wire my enemy?☺️ Thanks a lot
Question: what happen when i accidentally shorted the subwoofer positive to the body of amplifier? Issue of my amp no audio output after that incident.
I'd check the fuse
My remote wire only reads 11volts. I've been having issues with my bass cutting out when I go above volume 20 on my radio. But then when i lower the volume it takes awhile before bass kicks back in. Any ideas
Your ground switch the spot to something better. Ground off paint and make sure it’s solid.
I checked all my wires my power wire has 12 volts and my ground and postive also have 12v sometimes drops to 2v i have no power going to my speaker wires what can i do
Any instance where amp would go into protect mode when connecting speakers. It is a Ford Focus St with the sony system. The sub/amp combo works, the outputs from the Sony amp are going into AC-LGD to present load to the amp, but when connecting the speaker leads to the secondary 4 channel amp the amp goes into protect mode. I am simply baffled.
maybe someone can help me, but using a hifonics brutus bg 1300D amp i can listen to music and have plenty of bass, ive noticed if i crank it up some and listen to hit enjoying loud bass for a few minutes ill notice it getting weaker and if i turn down the volume the bass begins to kind of stall, where there is still bass but it has very little and cuts out the lower tones and sounds like its distorting. Ive changed two amps so far and been through 3 head units. 3rd head unit with the second amp is doing the same thing. i went back to my other amp that is a little weaker but it is good. doesnt seem to be having the same problem. could the amp just be dying from over drawing the battery??? this all started when i swapped from my alpine amp (around 750-1000 amp i believe) to the hifonics amp
vehicle info:
97 ford ranger stock alternator which does only 95 amps. new battery, all wiring has been redone recently in trying to solve issue (new rcas, removed front speakers off head unit and onto seperate amp, bypassed remote wire to just a switch rather than the radio.) I do know the radio gets pretty hot with the hifonics amp
I’ve tried all this and still get that stupid protect light on. I have a scar 400w 4-channel amp for my speakers in the car. Idk why it’s doing that now