THANK YOU!!!!!! This was probably more informative than any other video I've watched. I'm trying to repair a RF power 1000 and know how to test individual stuff but never quite knew how the flow went.

Wow! That helped me to understand, but my head hurts now. My Dad, a retired electrician tries to explain this stuff to me and it goes completely over my head within the first 20 seconds. You have a better way of explaining this. Thank you. It makes me want to read whatever book you read to learn this stuff.

The LC filter in front of the core is not there to filter out anything coming in, no appreciable noise transfers through the power supply . The LC filter is there to filter out the high frequency hard switching noise created by the fets that will, if not filtered, put a 40khz and up spikey square wave back out onto your +12, making a huge antenna and will make other electronics in the vehicle fail and work erratically. It is required by the FCC, read part 15 of the FCC rules and regulations. The npn and pnp transistors are not on the top and bottom as you pointed out, they are right next to each other. That boss amp uses the 2sc4467 2sa1694 Sanken audio transistor pair.

@JamesWattMusic

5 жыл бұрын

interestin. so much history in boards

wow... great job brother. you explained like cutting a piece of cake... Thanks man.. cheers.

so whats that big think in the middle with the fan doing?

Hey! incredible content! Some feedback: - I would do the resume first so people with more knowledge gets the info right away, and then if they're interested can look the more spec long version. - Try to do some steady shots, its quite simple. use MKBHD, jonathan morrison, etc as an example those are awesome - please do more of this :) I haven't seen anything like this and theres a huge market for it. Make a pantreon i would totally help. Cheers and good luck mate!

Wow. Excellent walk-thru and well articulated! thank you so much for demystifying these magical devices.

The BEST explanation and example on KZread.... Thank you!

thank you. extremely simplified and very informative for someone just learning about audio amplifiers.

I've been looking for a video that explains the basics of a car amplifier. Thanks for the video

This helps alot thanks for taking time to make this. I am studying components of an amp and this helps tie most of it together

I have been looking to find someone to explain this understanding for years now. Thank you very much.

thanks for the video sir. one of the mos explicit videos on amplifiers explanation. Would apreciate your help. I am trying to repair my subwoofer class d amplifier. I got a green light no proctection light, however there is no output signal voltage. RCA have continuity to the board, i am wondering is the OPAMP are bad and not turning on the output mosfets?

Very nice breakdown. Thank You.

Is it true that replacing the op amps with better ones will improve the SQ in a drastic way?

Mate, Thats a Terrific Explanation, on how an amplifier works. learnt so much. thank you. really interesting

Great video, haven't seen anything else like it.

I would like to say that you explained it to the T I had a hard time figuring out what was what but you had the best one thank you

Awesome info. Thanks!

what's that blue wire for the wire with the ring terminal

Is this any different to a stereo hi fi amplifier? What components make an amplifier sound better than a cheaper version? Would it be the output tansistors ?

Thanks man...you really did a good job of explaining how these amps work, thanks and cheers to you brotha! :)

@sc0tte1-416

10 жыл бұрын

Also, it looks like the tracers from the transformers or wherever the main voltage is handled looks like it's not the biggest gauge. Would shunt mods work on these or would it just be detrimental? Thanks

Nice video, thank you!

Hey man awesome video I learned a lot. I have a question though, what would cause an amplifier that's powered on to almost catch on fire without having any RCA's plugged into it?

@kenteikenjr4551

3 жыл бұрын

What does it do with rcas plugged in? Sounds like you have a dead short somewhere in the pwr supply region.

simple and best explanation thanks you very much !!

this is really helpful understanding the basics! I do have a curiosity though, can the amp be powered by an external transformer that has the rail voltage need by the amp, pretty much bypassing the amps power supply and feed it lets say at the power capacitors with a + - 20v ? like in the case I want to use a car amp at home, and don't want to use a 12V high amp p supply

@bassnatics

9 жыл бұрын

yes you can but then the caps must change

@radiotek4023

9 жыл бұрын

bassnatics caution you may also 'bypass' any *protection such as dc on the output or over current conditions that the switching supply would shut down in

great explanation. thank you

Is there any diffence between cheap speaker cable and the more expensive cable.

What can cause a power drop when volume is increased? Even the LED light flickers. I have enough power coming in. I have another amp that runs fine on same hookup. Problem amp Boss CH2502

Great explanation.

I have an old SPL dk1000 amp that was in my car and it slowly stopped working. first it started cutting out while running a pair of 12s and then finally went dead with no power, fuse intact. I haven't opened it up to look yet but do you know of any common problems that would cause the amp to lose power completely? blown fets? I have a multimeter, just don't know what to look for/what could be fixed, if at all.

Great information bro!

You made op-amp feed back easier to understand by a brief mention. Cool...

Awsome vid. tnks

Thank you I kinda a noob when it come to amp and I still don't understand much after but this video help me a lot!

@8:19 but I wanted to grind the rails with my skateboard! Also, I've been scouring amplifier vids, and yours is the best. Well done!

Whoa!! Great job. Never knew an Amp was this complicated

Great job !!

I have an old amp that played fine until it popped a fuse..I replaced the fuse and it popped again as soon as I turned the key on with no music playing...I haven't tried anything with it since then because I do not want to cause any more damage? Is this something that has an obvious fix or could it be a number of things? It is just sitting on a shelf collecting dust but I love that old amp 1990's Soundstream ref 500

Dude. Thank you! Your awesome!

very informative video very easy to understand thank you u answer all of my questions

very good video.Thank's

Hi mate, really enjoyed the video! Just what I wanted to know! Now....I have a 1000 watt boss amp and I'm certain is does not put out 1000. Can I make it a better amp by replacing the caps and MOSFETs with better quality items? Thanks

@alanmaier

8 жыл бұрын

+howitis howitis No, you can't just install better or higher rated parts. That will improve reliability, but the actual output power is truly designed into the amplifier. When a company builds higher and lower wattage versions of nearly the same amplifier - there are other parts also changed to match the designed output.

Good tutorial bro❤️👍🏻👍🏻

hey if one channel out my 2 channel amp not working wat are the stuff i can check to see if fail

Quick question, how much voltage does the transformer in the amp output? could you make some sort of inverter out of the power supply side of the amp?

@TheAmpLab

9 жыл бұрын

The voltage all depends on the amplifier. But no you can't make a DC to AC inverter. Even if it did produce 110v AC, it would not be at 60hz which is what standard US AC runs at.

Great video ! Keep it up.

Hi. I have an MTX XThunder X1000D amp, when connected to car battery and giving power to it with the remote wire, I can see the power LED pulsating/fading; it is noticeable only if you look carefully at the LED. Here is the problem, when the amp is on and I have my CB radio on as well the CB radio starts getting jamming sounds as soon as I remove the remote wire from the amp, it’s all good; if I turn on the amp again, it takes a couple of seconds and it’ll start jamming the CB radio. Now, my question is, could it have the high power capacitors damaged? Or something else, ‘cause that LED tells me something is wrong with the amp. Please help me!

great review video, thnx

I managed to shake the desk where my amplifier is standing really bad, while it was playing. Any chance it might have been damaged?

Could that pulse modulator cause fets to blow in a row?need some help

Quick question my amp turns on and everything but does not put out any sound. Wiring and fuses are good as im running a smaller amp. Any help on how to fix it

Hello, what part of the amp would communicate with the ECM on an Audi A6 to allow the amp to power the speakers? Trying to figure out how to bypass taking my car to the dealer so my amp doesn’t have to get reprogrammed.

Exactly what i need thanks very much

I'm trying to bypass the built in internal amp on a 90s Honda radio, basically converting it from high level out to low level out for a cleaner signal to an external amplifier. Also looking at upgrading the DSP and other preamp chips where possible if anyone has any tips. I have no idea where to find circuit board and chip information if anyone can help.

I gotta old massive audio 25.4 I believe it is a 1000.4 it's hudge more than half the size of the competition 1500.2 I had from them awhile ago, it still works great but the rca's input are loose I was gonna just open it up & ca glue it but what might you recommend I have lots of experience soldering but iv only dabbled in motherboards when somthing easy broke or I would bridge the old aux cable mini portable speakers to make them LOUDER but I don't have/own a vacum or anything just basic solder stuff,even 6% silver solder but im all ears

Can I ask where you learned your knowledge? I am very interested in how audio components work and would love to find a source for condensed hands-on training.

@TheAmpLab

9 жыл бұрын

I've learned it over the years. But Perry Babins site BCAE1 is a great place to learn a lot. Just Google it.

@ryanjoyner9236

9 жыл бұрын

Perfect. Thanks!

question: I have an alpine pdx m6 and it gave up on me taking my woofer with it the amp powers up; but it is sending DC power to my speaker any idea what may be causing that so i can get an idea if it is worth fixing?

@smetanavichlamanov8103

3 жыл бұрын

Amps work with dc not ac

what re them six green things called next to the driver transistors?

@alanmaier

8 жыл бұрын

+Harold Williams The large ones are known as emitter resistors. The actual signal from the output transistors needs to have a very small "buffer" of a fraction of an ohm, as well as an inductor (coil) for stable operation. The same applies to home stereo equipment as well.

Can u please tell me how to get only bass from my amplifier

why does my amp make the subs pulse and when the subs are not connected the protection light turns on

Flipping awesome!

thx so much for the vid!

So what happens when you have a rail voltage of 91v on one side and half the voltage on the other side ?

Great! Thank you very much!

my gain knob on my amp broke now that channel has no sound . could that be fixed?

best video ever

I worked on a power bd1000.1 a while I almost forgot the four big 100v caps were still charged! Had discharge them

Nice job .. can u explain why a amp is in protection mode? My car amp is in protection mode ..

Good information . Wish That I could send you all of my blown amps

I have a phoenix gold tantrum 1200.1 the amp turns on and I get 0 sound but the sub reaches full Xmas and hums any idea's. I've removed the amp from the car and replaced it with another amp and it works fine. I've tried bench testing the phoenix gold with the result no sound just hum's and the sub goes to full xmax

@vintagestereobuff7005

7 жыл бұрын

Sounds like you have Direct Current at the amp output which is pushing the cone out and holding it there. It could eventually cook the coil of the sub. But I'm not sure which component is faulty allowing this to happen.

What usually goes bad in a amp?

Thanks brother..

Hi I have a question , can someone change the output capacitors inside a amp put bigger ones to get more dynamic power ? Can a amplifier be modded ?

@smetanavichlamanov8103

3 жыл бұрын

That's what I want to know. Ive been searching the entire internet and can't find a thing on exactly this question 😔

Thank you!!

How do I know what resistor I need ? Some fried so how do I know which to get ? I have a meter but am a Engine guy

well explained :D

Hi mate are you able to help me out with my home subwoofer amp?

Somehow i understood...lol great video!

My amp goes straight to protect mode what can it be its a 4000.1w spl

hi mate i bought a q4000 amp and the question i have is when it says • Rated Power: 125 Watts RMS @ 4 ohm x 4) does this mean each of the 4 channels has 125 watts rms at 4 ohms or does it mean it has 125 watts rms between the 4 channels at 4 ohms

@smetanavichlamanov8103

3 жыл бұрын

Each single channel is driven by 125W RMS output ×4 not 125W across all ×4.

@djhinormas959

3 жыл бұрын

@@smetanavichlamanov8103 6 years later i got my answer cheers mate , ;)

Wish you could do that for tv mainboard and power supply

The are a nice video but can you can fix my 1500 zx mono black kicker they kinda burn oje side

Where is ur shop

What usually is the cause of a amp to be stuck in protection mode, i have a few that i refuse to throw out?

thank you ^^

Thank you.

I had 3 risistors burn up right by the transistors or 3 prong black square things. Why ? If I replace them will they just burn again.Also it worked and I heard music from a very small speaker,iput on my subs then it fried. Worked before subs butsubs are fine just couldn't handle it I guess. Also how do I replace the resistors and get same ones ? Ones that fried are just like others next to them so how can I test them to see whati need

@alanmaier

8 жыл бұрын

+Headshothorror4488 Those emitter resistors blow for a reason, and you need to fix the reason. Those rarely blow, so you've got major damage somewhere.

@Headshothorror4488

8 жыл бұрын

+Alan Maier They are 10 ohm I think , it fried up only one in a set of four but is 10+ yra old. Also worked on a small speaker. New amp , it will get loud and normal then just goes half as loud outa nowhere ? When I press on the amp cover it gets loud again , when I jiggle the RCA connectors same thing. Could a loose RCA cause this as in the amp loose not wired RCA those are new n Memphis. Is the a ground wire in amp ?maybe loose, its a mtx tc300 CEA 2006 rated but old.

nice video

Thank You .... Nuff Said

What Amplifire Is That?

overview is good

Hi, if this has a PWM. That makes it a class D right? Cheers for the vid buddy!

@dawnminilla9299

3 жыл бұрын

The pwm "pulse width modulation" is the for the power supply, this is a class ab.

thnx bro!!!

I have a memphis pr 1.500 I'm trying to test it with a computer power supply my question is I have power on the amp but can not get signal to come out of the amp I'm using my house equalizer to send signal to the amp do you think the amp is blown or is a power supply not enough to run it? Ps rca's are good

@TheAmpLab

8 жыл бұрын

A computer power supply is not ideal to power an amplifier. It could very well be bad, but I would still change the power supply. does the amp power on?

@joshcassler7252

8 жыл бұрын

it's powered on and the cooling fan runs but no sound coming out of it I know the way I have signal going to it won't have volume control but I turned the gain up and down sub sonic filter all that no sound I threw power to the sub with my house amp just to check it's not the speaker

@TheAmpLab

8 жыл бұрын

+Josh Cassler Could be a ton of things. no way of knowing without seeing it in person and really testing things.

@joshcassler7252

8 жыл бұрын

if one end of the rca plugs is in the amp and you touch the other end of the rca you should get a hum or a buzz or somthing it's dead not even a crackle it takes pretty big Guage wire to run if it's not getting enough power would it still be able to turn on just not put out sound

@TheAmpLab

8 жыл бұрын

+Josh Cassler I have seen that, yes.

Well explained...

technology is amazing

Geef meh yo brainz! Love your video!

Hello, I have an amplifier and it doesnt work. Its lights are ok. Everytime I turn it on with the subwoofer connected 2 small components situated next to each other named C4467 and A1694 get hot. The speakers work fine because I connected them with my house Amp. If I change channel to my subwoofer then another set of these components gets hot equally. Moreover if I coonect only the speakers without the sub then it gets hot but slower. PLEASE help me...!

@aaronjohnson8715

10 жыл бұрын

A quick google says these are your NPN and PNP transistors (they handle the power going through the speaker). They should be attached to a heatsink, but if they are in a 'low power' amplifier, that might not have been necessary in theory. Speakers have different resistances (16, 8, 4 ohm are common) which means that if you use the wrong one, you'll get more volume through it, but much more current will run through the system, heating up components. A simple way to solve this would be to heat sink these, if you must use those speakers. If you'd like to do this, the simplest way would be a drop of super glue and a small piece of metal (preferably with fins) attached to each chip, to help spread the heat (use electrical tape to prevent the metal from touching anything else, and don't let them touch each other. Many transistors/mosfets conduct current through the heat sink). * I take no responsibility for any damage to your equipment, you should look into heat sinking before following this advice.

@radiotek4023

9 жыл бұрын

Disconnect the speaker and check what the voltage is on the speaker terminal. It should be very low around 20/30 mV or less (0.020/0.30 volts) if it is volt/s you have a offset problem.

Hey man nice video, i want to start a speaker company. gathering knowledge if you get time let me know want to discuss more over call. Thanks