Hello lads, I'm dealing with a sounddigital power 35000.
We have some shorted output devices that send the entire amplifier into protection.
Unfortunately it's my first 35000, so I don't know what the output devices are.
I only know that they are abraded with the wording "L3.
I am well aware that SOUNDIGITAL is reluctant to provide part numbers, but unfortunately the official assistance in Slovenia is the last resort, because it is very slow, going, waiting, repairing, returning.
If someone is kind, he can also contact me privately.
A thousand thanks.
We have some shorted output devices that send the entire amplifier into protection.
Unfortunately it's my first 35000, so I don't know what the output devices are.
I only know that they are abraded with the wording "L3.
I am well aware that SOUNDIGITAL is reluctant to provide part numbers, but unfortunately the official assistance in Slovenia is the last resort, because it is very slow, going, waiting, repairing, returning.
If someone is kind, he can also contact me privately.
A thousand thanks.
The output devices will have their ID printed on their envelope/case. With that part number you will be able to purchase new ones from a reputable supplier;RS Components, Mouser etc etc.
If the ID has been removed, I would contact the manufacturer and ask them whythe ID has been removed.
If the ID has been removed, I would contact the manufacturer and ask them whythe ID has been removed.
I don't know whether to take your answer seriously!
If you're not aware, soundigital does this on all (or almost all) of its power and output devices to hide the original part numbers.
If it is not possible to know this part number, it is easier to say it explicitly than to say it in other "ways".
Is this amp a clone of another Brazilian amp?
Do the SD amps use different transistors for 1 ohm and 2 ohm amps?
Do the SD amps use different transistors for 1 ohm and 2 ohm amps?
I believe that the sounddigital in question is the original and that some Chinese brands have cloned it, in fact on the web I saw that there is a very similar 35kw Chinese copy which however uses output devices with a TO-247 package, but also in that case I do not know the part numbers.
By the way! Merry Christmas to all.
By the way! Merry Christmas to all.
In that case, it is junk.
All manufacturers, of reasonable standing, do not remove part numbers. Only cheap Chinesium factories do that.
I have been in the commercial service industry for over 50 years, I can only comment on my experience.
Pioneer, back in the day, managed to utilize a 250Watt set up in their show car but when the volume was turned up, it blew the rear window out. The noise from the 'music' was heard 1/2 mile away!
35kW from a 12 volt source ... 2916 Amps ... bizare and totally unpractical.
Any true Class D amplifier will switch high current but what can be done with it ... this is the question.
With a load that is, say, 70% efficient, the power output will be reasonable for the power input.
Driving a 1 Ohm load means 00 guage wire just for the speakers. In most cases, that is impractical.
Stetsom is very similar in design. If you can find a similar Stetsom amp, the part numbers may be easier to find.
Times have changed a long time ago, there are amplifiers that are literally out of the ordinary.
Until a few decades ago, there were amplifiers up to 10,000 watts RMS at 1ohm, today we have reached powers 4 or 6 times higher in a single chassis (always at 1ohm).
In some cases, some Brazilian houses have built amplifiers with full bridge technology, without a power supply, which operate at over 200 volts DC (you have to use the batteries in series, rather than parallel) to obtain powers above 100kw, something truly abnormal.
Anyway, just to get you figured out, this 35kw by soundigital, uses 4 power terminal blocks with a generous 70mm sq section each and the output terminal block is generous enough to allow all that power to come out.
These are the photos of the amplifier and its interior, and more in detail, there are also the photos of the driver circuit and the output devices (L3).
Sorry for the blurry photos, unfortunately my cell phone is passing away.
If it is class D , everything back to the oscillators will likely be dead given the huge power output. If it operates bridged one half may still be OK.
The PS produce 248,8v from 12 to 15v source.
Its regulated, so this is his maximum voltage.
So if they are MOSFETs, 300v is the minimum required, if they are IGBTs, i dont know.
Hi Perry
These amps are not clone rather the Chinese have cloned these amps. Yes they use different output fets for 1 ohm and 2 ohm version.
Also Sound Digital will not give out the part numbers to anyone. I do the warranty work for Sound Digital in my country and I myself cannot get the original part numbers
I consider all designs to be clones if they share a very similar design. This would be true for many Brazilian amps like Stetsom SD and Taramps. I asked for clones from Stetsom because their part numbers are easier to get.
How does SD expect you to do warranty work if they won't provide the part numbers?
I don't know if it will work with SD but it will sometimes help if the owner contacts the manufacturer and throws a fit because he has no way to get their (very expensive) product repaired.
In the service literature for some of the Brazilian amps, they use 200v FETs in amps where the rail voltage is given as 194v. The FETs in your amp may only be rated at 250v.
How does SD expect you to do warranty work if they won't provide the part numbers?
I don't know if it will work with SD but it will sometimes help if the owner contacts the manufacturer and throws a fit because he has no way to get their (very expensive) product repaired.
In the service literature for some of the Brazilian amps, they use 200v FETs in amps where the rail voltage is given as 194v. The FETs in your amp may only be rated at 250v.
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