Trying to bring back a VERY dead Soundigital 8K amplifier

[@Pinkielover]

it was Nice being part of this livestream. when you get all the parts ,, film the rest... take care

[@cartycartyamplifiersalesrepair]

Great video Sam very educational nuff respect keep up the good work sir 🇺🇸 🇯🇲

[@jaraalbert]

Assume videos love your videos thank you for sharing your knowledge with us

[@mrsweete9065]

Brilliant live stream! Can't believe how lucky I was to see you working on my Alpine 😂

[@avac4312]

I wish you could tell us when he'd be on next any information or something

[@MOBAudioUSA]

Damn I missed another one! Thanks for the great videos Sam!!

[@avac4312]

Yes but when is the next video I've been waiting a month

[@bassface1984]

You should start an online class that starts from the beginning to folks like myself that are very seriously interested in your craft . I am Old school car audio enthusiast and I enjoy watching your videos.

[@rodgerjohnston3472]

Hi, is the 8 pin chip C2 the power inverters driver chip? Do you know what part number it is. Thanks.

[@rodgerjohnston3472]

The part in question is in a Deaf Bonce AAB 7900.1D

[@kulibapro1370]

Ir4427👌

[@mikehonda7934]

Though I’m late to the response, one of the reasons PDX amps have so many output MOSFET’s on the output side is because of it being a higher voltage amp. Along with it being a 2ohm load amplifier minimum as well as other things they chose to use in the output section. When these amps came out, people were 1ohm running them, not realizing they were 2ohm load amps, having to run their subs at 4ohm because of their sub configuration clipping the amp heavy like Sam mentioned. Was an overlooked thing by most and it was mostly by second hand owners without knowledge of these amps.

[@demetrius316]

Love your videos

[@warenmann1042]

MISSING 10R RESISTOR: At time 1:26:31 and 2:26:47 it appears that you are still missing a 10R resistor on the left side of the big black diode that's above the IRS20957S top of board in video. If that spot is not suppose to be populated then just ignore my comment. Not a subscriber but I have watched all your videos, learned a lot, repaired a few amps. You do good work. Thanks for the channel/videos. Florida USA.

[@bigstone5124]

Great stuff, please more videos. Best Regards

[@jacktheripper1083]

dammit missed the damn notification again, sorry sam, take care bro, ,will certainly be watching like a hawk for the next one

[@raylopez2074]

GREETINGS FROM COLOMBIA, I HAVE THE SAME AMPLIFIER, DO YOU HAVE THE REFERENCES OF THE ic10, ic11, ic12, ic13, ic14, ic15 and ic16, thanks

[@kevincobb5182]

I have a old school ppi crossover from 1988 era and was already told the patenchiomiter was bad and they no longer make this one! Can another one be adapted to work in its place! I live in silver Springs Florida and just want to use it again for a install! Can you fix it??? Please respond! Thank you!!

[@miguelvallejo7289]

I hooked up my ppi pcx 2400 backwards their was no smoke I can't find a burned chip anywhere where do in get the parts or how or where do you work from I'm Colorado how would I go about getting your services

[@romanaround778]

Dude do another live feed looking forward to it ,,booming in tampa fla USA .

[@shaunjay6040]

I’ve got a Deaf Bonce AAB 7900 amp that stopped working yesterday. I’d love to send it to you for repair if possible.

[@matt6951]

Just picked up a soundigital 8k evo x 4.0 hope it’s not junk.

[@denniswalker1640]

Cool mr bargains, I just bought,an SD evo 8k ,new modle,,,,stoked

[@justforlaughs8988]

That was awesome! Every video I learn so much but makes me feel so dumb lol

[@russellcrabtree5314]

Is it a good amplifier? Haven't seen any amp dynos on the EVO 8k. Might be getting one and want to be assured the 8k EVO will do 8k at 1ohm. Thanks in advance

[@steventompkins8164]

Hey just a question how do you isolate the parts on the board and test them without removing the part I can see directional diodes of coarse including rectifiers but like capacitors and without reading another part of a circuit. In my work as a underground coal mine electrician the capacitor would be in hooked then read or of coarse unless they are swollen. Lol

[@avac4312]

Is it normally on Saturdays which day is it you normally come on I seen you Saturday night last time can you tell me anything

[@sanjink]

Hi Barevides, writting from Croatia, Europe... i have FUSION SG-DA51600 5 Channel marine amplifier, and from some reason, dual mosfets (IRFI4019H), 12 of them, are getting very hot, and after a few minutes in operation, the amp gets into protection mode. Can you assume what can that be. Until protection mode, the amp is working with no problems.

[@MRPricks]

I made a power supply using a mig welder transformer a few diodes built a regulator board using mosfets very grunty and never gets hot.

[@mexmex01]

Exelente gracias por tu esfuerzo

[@bjornhurtig3269]

hi barevids. im wondering where i could get som cooling fan for banda viking 14k? plz help me. maybe parts number or something? =)

[@OldSkoolF]

Love your Barbie Princess Melody Keyboard... LOL

[@avac4312]

When are you going live again

[@avac4312]

are you ever ever ever going to come out with a new video my man I've been waiting and waiting and waiting is there anyway you can give us a notification or just anything at all to show when you're going to come back on please come on man

[@andredwaynewilson6203]

Hi Barevids I’m trying to find amp Gut of Sounddigital 4000.1D evolution 2 ohm version

[@franciscorompana2985]

Hi Barevids, Do you know the brasilian amp by Carlos Mergulhão made with transistors called "amplificador DX"!?

[@bornfe5127]

the gate driver are online as written on the board

[@killabee623]

Hopefully you are around to see time travel, Teleportation and intergalactic travel...

[@grumpyrodriguez7943]

I don't see where inbox is but I got an oscilloscope because of ur vids thinking my repair days just got better thought it would be simple like multimeter..can't find any good videos out there as to how to set it up for amplifier fault finding it's an analog tektronix 434 was wondering if u or anyone that's reading this can get me started on atleast setting it up please thanks

[@avac4312]

When are you going to have another show

[@andredwaynewilson6203]

Any help will be greatly appreciated

[@pablohernandez8427]

How can I get in contact with you to repair an amp for me ?

[@mustangPK94]

can you fix a dynabel bf8501?

[@nicwilson89]

3:56:00 making your own amps in the future? up for a collaborative effort at some point for those of us that are also electronically inclined? :D EDIT: Holy shit, only 6 years repairing? That's amazing progress, mate!

[@jordanciaramitaro6351]

It would be interesting to see what would have happened if you used those irfb4321 mosfets

[@barevids]

🔥 🔥

[@steventompkins8164]

Hey what 4 channel amp that is capable of doing rated power that doesn’t hurt the piggy bank

[@blackswanmediallc6901]

ROCKFORD FOSGATE PRIME/PUNCH/POWER Spend the money and get years of reliable clean power.

[@steventompkins8164]

I have the soundstream tarantula tn1.1200d and I think I purchased it for 139.00 and it does well over its rated power and seems to be a very good solid amp. So to add to the question I asked you before about what is a good amp the does it’s rated power that don’t hurt the wallet and you said pioneer punch prime but does other amp manufacturers use the same boards as pioneer? I know you said jl audio designs and builds there own boards. So what other cheaper brands of amplifiers that use the same boards as rockford fosgate?

[@sunneysunney9761]

just over load solder on back pcb will allow more amps and I did it once had soo much extra thump melted the carpet that was on

[@XM913CG]

The transformers are in series on the output side. And in parallel on the 12v side. hence the 4 rectifiers. 1 Positive and 1 neg per side, per rail. on the soundigital.

[@barevids]

Not sure what you mean in series on the output side, there are no transformers on the output, only inductors, one per "channel" that are in permanent bridgemode

[@scooby799]

Could I send my jl audio class d amp 2 u its low output

[@jam222ify]

My CT-SOUNDS 1500.1D amp makes my subwoofers beat rapidly and loud like a heart beat. Nonstop. Why??😫

[@gianstevens7918]

Bare good stream, watched the entire video, sad I missed it. Hopefully next time brother.

[@TristanSpeno]

Yeah man I missed it too, I had homework

[@sandeepsinghjagdev3485]

How taramps are too small but produce high power

[@jordanciaramitaro6351]

Search your email for the part number to see if you can find the receipt showing of how many your purchased.

[@denniswalker1640]

Ummm I ment,,barevids, but anyhow if you get this, if you get this question,or any other installer/hobbies, I just bought a sounddigital evo 8k, and I know its a newer technology, what do yall think about this amp

[@pierreiverson909]

Can you repair some amps for me

[@MickeyMishra]

I literally have thousands of things I've always wanted and can't find any of them because I have no idea where they are :-)

[@raylopez2074]

AÑADE SUBTITULOS

[@nicwilson89]

4hours long? Time to sit down, stick it on, and fix some shit to a video or bare fixing some shit :D

[@russellcrabtree5314]

Wino!😂

[@yaghiyahbrenner8902]

As an engineer that designs SMPS and class-d (for fun), I like your enthusiasm! but your understanding of hard and soft switching isn't correct. if you lower the gate resistor the miller charge is faster this increase the slew rate of switching node forcing stress in the switches and limiting their life cause the snubbers will dissipate more energy, this will raise EMI and more EMI more the circuit is subjected to high frequency shot through (and random failure and yes the FETS will run cooler but this is deceptive), the gate resistor is used to tame switching for a balance of EMI vs long term use, your modifications requires circuit analysis and worse case calculations not glazing over things and making assumptions.

[@yaghiyahbrenner8902]

The other explanation is programble planned obsolescence if the rg is to high the runs in its linear region and not saturated reducing its life deliberately.

[@barevids]

Right okay! Thank you for the information buddy! Good to have some insight from someone who actually works in the field. I was always led to understand that the kind of really weak, slopey drive wave on the gate as a result of these 270rg would hinder the fets ability to produce as much current as if they were turned on more quickly, since datasheets suggest that RDS becomes lower as voltage on the gate increases. So having the full 12v on the gate for a longer duration will mean the fet is presenting a lower resistance to the circuit for the duration that it is switched on, as opposed to only for the last quarter of its on-cycle, since for over half of its on time the gate voltage is considerably lower with the higher value resistors.

[@yaghiyahbrenner8902]

@@barevids ALWAYS REMEBER THIS: -- hard switching * Hard switching occurs when there is an overlap between voltage and current when switching the transistor on and off. * This overlap causes energy losses which can be minimized by increasing the di/dt and dv/dt. * However, fast changing di/dt or dv/dt causes EMI to be generated. Therefore the di/dt and dv/dt should be optimized to avoid EMI issues. -- soft switching * Soft switching begins one electrical parameter to zero (current or voltage) before the switch is turned on or off. This has benefits in terms of losses. * The smooth switching waveforms also minimize EMI.