The legend - JBL A6000GTI Circuit Overview & Repair
Ойын-сауық
Service manual link: www.dropbox.com/s/nvyh03wetka...
The repair of this one eluded me for some time, but after finally finding the root cause of my problems I was able to get it back up and running, and talk about how this amp works for you guys. Stick around for some demos in the coming weeks provided I get the chance!
Пікірлер: 109
I have this masterpiece hanging on my wall, like the art it is. Wasnt easy to hang it up though😅
The low power supply switching frequency is because of the circular layout. In order to fit the number of mosfets needed, the circle needs to be quite big. If you fill up that circle with one transformer of a size that nicely fills up the hole, it will be quite big. Because of its size, its magnetic resonance frequency will be lower. It will need a lower switching frequency for operating at peak efficiency. Looks awesome. Power supply section is probably supposed to symbolize a crown. Just one flaw in this amp. It really needs thru-hole gold-plated headers and pins for its boards.
@barevids
Жыл бұрын
I see, so i guess it was more form over function, they wanted that visual design so lowered the frequency to match the size needed
@thatdrh
Жыл бұрын
One of my 3000’s (same main board) had bad headers. Gates stayed open fighting the others. Fets pop, cooked the gate driver and then a couple pieces on one of the front end board.
Great video !!!! Who would have thought 20 plus years in a 2004 amp I would consider “Old Skool” 🤣. I’m getting old
Wow! Now that’s an amplifier. Looks beautiful and innovative and clever and functional.
This is really cool for you to go through the circuit in such detail...I have just received 2 crown 4000 pa amps for service from around the same era and having a quick look under the hood it looks like the output section is similar possibly using an identical drive card arrangement with the plugin boards/headers....so I'll be definitely checking out the connectivity of this headers. If I didn't view your vin I possibly wouldn't have them under scrutiny!!! Thanks for your work and great synchronicity too...
Thank you for covering this special amplifier.
Your welcome for the manual bro, good job by the way. Have a good one sam.
@BoxBuilderIdaho
Жыл бұрын
I'm glad the gentleman over it mad scientist car audio labs happen to have the service manual and was willing to share it with me when I repaired my crown a6000 GTI and I'm glad that I was able to help at least one person by sharing it almost everywhere on the internet.. I noticed in your video that you said that the amplifier had been sitting there for many years without the service manual I can see how that would happen. Anyhow I appreciate your videos I am a fan of your channel I am subscribed and I'm glad that I could help
Great job Sam! I can't wait to see the demo.
That's a monster of an amplifier, but my god it looks like such a pain to work on
love your service info.
Thanks for your videos, Sam. I have learned a lot!
Dude. Your smart. If you made an amp…., I’d buy it.
This amp is such a legend
Great video bro. It’s cool your pops is helping you. Thanks for the video.
Oh how interesting it will be to hear your thoughts on high power high quality vs high power low quality designs! Great content sam.
Very good content Sam!!
Dang, m8. Reckon this might be your best video yet. Good stuff! Looks like you went back to the pops' place and are workin' on this thing in your old workshop. Bad ass!
These come up now and again on forums or eBay for a good price.... good compared to the 6 grand MSRP when they were new. A bit of a white elephant though really. A beast of an amp for sure but overly complex and when it breaks there's not may people who can repair them, fewer who can get some of the proprietary parts that may be required to fix, and by all accounts it can be extremely labor intensive. I owned one for a while and when it broke it cost me nearly 1200$ to repair (200$ shipping each way plus the fix).
Yesss, hurry and post the next video of this monster hooked upp!
Woah that's a beast of amplifier
Finally Sam, You pulled Your finger out Your arse ! It's only been over 14months since I've sent You the service manual for it :)
Thank You!
Freaking historic engineering.
Thanks Sam! I just FINALLY picked up the last piece to the pair last week I now have the 3000 and 6000, havnt dared to try powering them up yet, im scared to due to this whole crap of how complicated they are...
Love the video... Just shows off your in depth knowledge of amplifiers and electronics Part of me is sad this is a customer amp and not yours
Wow I’m glad I found 1 2 or 3 years ago lol I still haven’t used it was in a jbl demo vehicle with 6 jbl gti 15s wich I have aswell!
New subscriber, this is the content we need! I'm searching best price/sound-per dollar. Help us find the hidden gems. Avoid the wrong traps etc. Williston Audio type format except with a slightly less in depth for length. Distinguish differences among them, things you like or hate. Keep it up!
waiting for the continuation tks
Why doesn’t this vid have more views?!?
There's one of these for sale here in NZ, in brand new condition & only 1 owner who used it as a display piece in his car audio shop when they were first released, i can remember being one of the first to see it in person, i was horrified at the price tag though.
@SYKO666
Жыл бұрын
How much.?.
@HashDogg06
Жыл бұрын
@@SYKO666 $4000 NZD or 2000 pound/2500 USD as a reference.
@thatdrh
Жыл бұрын
I still have my original 6 of them and just found a 7th that someone took a part
@HashDogg06
Жыл бұрын
@@thatdrh Baller...haha. Why so many?
@thatdrh
Жыл бұрын
@@HashDogg06 good question. 2006 I got my first one. At that time I said, “I just want 4”. I even told my woman (now wife) at the time. “I’m stopping at 4”. Then I decided I need a 3000 and then I found two of them and some more new 6000’s. One thing lead to another….
COFFEE AND THIS NICE CONTENT.....
Talk about playing the long game... makes me think of EXO'S bass van build. Can't wait to see it play in the van and hear your opinion on high power vs sq
we sure got what we asked for regarding the detailed overview of the circuit. sad the heyday of crazy amplifiers was 20 years ago. hoping for a new topology or breakthrough in amplifier design. maybe an amp takes advantage of the back emf as an extra source of power. like your non-repair videos for your audiophile layman
I have a JBL w12gti in my car. This would play very nicely
Sam u need to build some “Sams audio buildhouse” amps. I’d buy them and pretty sure everyone else is car audio world would to.
good morning!!
I'm waiting for the 10k amp comparison :)
Monster amplifier
Today someone is there with you,to record a video
The safety switch is a Reed relay
@Barevids What do you think of the R series amplifiers from Leshine on Alibaba especially the 5k
A true work of art ! Was this amp a collab between JBL, and Crown ?
@envisionelectronics
Жыл бұрын
Same company. Harman International
Man you got the life you get to build the badest Mopars and got look for them like dinosaurs 🦕 lol keep it up love the videos
Great video man. Was a lot to it. Listen I got that linear power 5002 out of storage and a powered it up and there's something wrong with it it you can hear it when you first connect the 12 volt turn on and it usually goes like ping and then like it powers on. Well it's not doing that it does that every once in awhile it turns on sometimes it doesn't turn on sometimes until you connecting disconnect and connect and disconnect and connect and disconnect the remote turn on then sometimes it Powers up what's the problem? I love you take a look at this amp looks great man I can take a picture of it and send it to you
@barevids
Жыл бұрын
Hey man! If you're in the UK I'm happy to look at it for you, shoot me a message on my barevids facebook page
Would it be detrimental to the amp, if one were to dial back the OL and UL and turn it all the way down. when I was adjusting those on the 3000, there seem to be a fine line where the amp would start to draw a lot more current. This was even when no signal was passing through it....
@madgadgetuk
Жыл бұрын
They have to be precisely set or you get crossover distortion. Crown specifies the point in two ways, one measure current, two use a scope to see the waveform. Turning them down would not be beneficial, whilst they have high idle current, that becomes irrelevant when being driven. They become very efficient, and produce a surprisingly little amount of heat.
@thatdrh
Жыл бұрын
@@madgadgetuk I see that the manual says this, "Connect probes to TP1 & TP3 on the coil board. Center the oscilloscope to measure the lower right portion of square wave. Adjust the time scale to 50ns per division. Adjust R307 for channel 1, and R407 for channel 2. Turn the potentiometer so that the transition zone on the corner of the waveform is less then 10 volts." Now is this with no signal, and no load. Or Do I need to passing a signal through?
Would it make a difference if their were 2 or 3 inputs for power or swapping the 1/0 ga. connections for let's say, 2/0 or 4/0 gage inputs. Even changing the rca's to the "Tiffany style" and speak outputs to 4 gage? #justwondering 🤔
why are the newer class D amps do much more compact... is it from higher amperage mosfets? I am somewhat confused as to how that has happened..
@Barevids i have a Beyma RL 3600 with a blown Fet in the output stage, unit powers on normally no protection.. I brought it to a shop and he identified the blown Fet..Came home took the amp apart myself and found THREE!! different types of Fet's The originals seem to be Toshiba SC5200 and some KTC mixed in, my question: Can i replace all the Fets with original Toshiba's?? And maybe can you point me to a video where you did a repair on output with measuring? You would help me a lot.. Apparently Atomic made an amp almost exactly like the Beyma RL 3600 does anybody know how i can diagnose this amp?
*2 amplifier circuits, not 4. There are a pair of inductors per channel.
Mmaaannnn... 5 months later... & still no demo of this masterpiece🤨😞
@barevids
Жыл бұрын
It's funny you say that, because right now the demo video of this is almost ready to be rendered 😂 I'm just waiting on two friends to head over and give their impressions and reaction on video... Be released around 7th Feb i reckon. Not a regular Demo video tho, you won't want to miss it!
@smigletat9634
Жыл бұрын
@@barevids Love you man!! (In a good way-I got 2 kiddos) You are truly a very genuine/ Humble guy. That’s wonderful news on the release & if you don’t mind me asking. .. Just how many years is it you obviously have spent your time in the book of an electrical engineering degree!!! Holy smokes!! You.. Dear sir, here in the US could just name whatever job you wanted because people would be standing in line! No one wants to get hands dirty. Love your content & (not sure why I am not subscribed) 🤭🤫 That’s all changed😊
👍🏼👍🏼👍🏼👍🏼
Friend of mine was driving down the road and his amp let the smoke out. Alternator also fried. Question is which came first chicken or egg. How would you go about determining which fried which. He did have a pretty clean install with 0 gauge couple caps extra battery and 250 amp alternator
@barevids
Жыл бұрын
If only the power supply fets are shorted, the alt killed it. If even a single output fet is shorted, then the amp died first.
@eddiereichel9354
Жыл бұрын
@@barevids Thanks for the insight
I wonder if you could rebuild build this amp but redesign the power supply to operate of in home power, and design a new amp chassis
@barevids
Жыл бұрын
I might as well just buy a Crown I-Tech as that is exactly what you just described 😂
@chaseleim4773
Жыл бұрын
Oh fun didn't know that it was already a design
Do u know what would cause 2 channels in an amplifier to fight each other?
Man, is it a computer or analog amplifier? PCB smd, heatsinks, coolers, molex, ATX, very crazy, Following in Brazil!
my money is on jbl 6000 beats taramps 10000, i used to run 2 jbl bp300's on fosgate 200 rms, and im using a sound qubed u1, 3000 watt on a skar vxf now and not all that impressed... blew a taramps 1200 as soon as the skar hit... it had allready clipped a 1000 watt 8 to spider/lead death. rs gold still bumps burnt and torn tho :P need an amp repair, a recone, a bigger amp and a smaller subwoofer to make presents for my friend. if jbl made a 1500 wat rms amp i could afford i would be rocking that :P
@FUBuddy
Жыл бұрын
i did spend 2 weeks doing math out of the speaker box book before building the bandpass box back then too tho, have not even started math on the skar, its in a skar ported box.
Toroidal transformer on a car amp is incredibly unique, want an amazing piece of tech. Definitely not something you'd see now days.
@barevids, hey bro, love the channel. You've inspired me to follow down this path of circuitry and repair and I'd like to talk with you, if possible?
Why are there a bunch of capacitors labeled OPEN in the voltage translator? If they have no capacitance why do they exist?
@barevids
Жыл бұрын
Just another term for NO STUFF. This driver card is used throughout many of crowns PA range so parts of the schem may not have been needed in this implementation.
Hello I have 2 jbl a3000gti car amplifiers for sale and I’m wondering if anyone knows where I could sell them as they are very rare and I can not find them for sale anywhere.
@barevids
Жыл бұрын
Facebook groups, EBay
i got an a6000gti going in my show truck
I have the gti14001 is that amp the same ?
@barevids
Жыл бұрын
no, but that is still a great amp.
I feel.like you could use newer stronger MOSFET caps and so on to crank out even more power and get a longer life out of it
@barevids
Жыл бұрын
nope, better caps and fets dont increase power output. to increase power you need to increase rail voltage, which would mean new transformer.
@fxandbabygirllvvs
Жыл бұрын
@@barevids would better cap and fets do anything helpful for the amp ?
@fxandbabygirllvvs
Жыл бұрын
@@barevids also have you thought about taking a shot at fixing other electronics like radios,motherboard,so forth
Going to plug my video knowing that you found it useful, others might as well. It's also covers a bit on the danger of the high voltage sides. If anyone here is interested in the PA version of these amps you can see my video here: kzread.info/dash/bejne/qqKHsJeoZsmTqso.html
I have 2 phenix gold ti amps that need repair but there is absolutely no one in Tennessee that works on car amps. No one wants to work on switch mode power.
Man I went to test my jbl 6000 and it is giving the code ( E opt ) very disappointed I paid good money for my amp but I never tested it
@barevids
Жыл бұрын
What power supply are you testing it on
@mr.18s73
Жыл бұрын
@@barevids in my vehicle I have headway lithium and iox capacitor 14.4 14.6 or so
@barevids
Жыл бұрын
@@mr.18s73 damn :(
Send me the manual please
@cdbennett2332
Жыл бұрын
Did you look in the description?
blooddyy elll
you need to buy linus's ratchet screwdriver lol