Hello everyone! I bought this amp already broken and it had a red protect light on. Measured and found 1/8 power supply fet (irf3205) shorten and 2/10 output fet (irf640n) also shorten. Took of those broken parts off the board and powered the amp up. Seems like it works properly without these burned fets. So the question is: can I use the amplifier? As I don't have enough these fets I need to order them but could I connect it with a subwoofer (1ohm)?
I would have 8pcs of irf640 (without the N suffix) but unfortunately only 8 not 10 what would be needed.
Thank you for any help.
I would have 8pcs of irf640 (without the N suffix) but unfortunately only 8 not 10 what would be needed.
Thank you for any help.
That probably depends on how hard you drive it. It most certainly would fail if you drive it hard into its lowest rated load. It might survive at 2 ohms (if it's rated to 1 ohm) if none of the drive circuit was damaged when the FETs failed.
That said... if it fails, like any amp, it could badly damage the board, especially if the PS FETs fail.
Reducing the fuse to a lower (1/2) amp rating may help to prevent/reduce damage if it fails.
That said... if it fails, like any amp, it could badly damage the board, especially if the PS FETs fail.
Reducing the fuse to a lower (1/2) amp rating may help to prevent/reduce damage if it fails.
Unless you have MUCH more self control than most everyone else, you'll get carried away and drive it too hard.
It will have to be repaired, sooner or later. If you drive it too hard, it will be sooner.
It will have to be repaired, sooner or later. If you drive it too hard, it will be sooner.
Yes I notice that 😀 but my wife is keen having this one into car (after waiting the GZ to be fixed) until I get parts to it and fix it properly. That's why I am asking these weird questions about using it.
I could tune it so that at max vol it won't give no more than..lets say 25volts out of it. So the maximum power output would be rated somewhere at 600W.
Does this sound anything like I could still have a working amp until I get new parts into it? Perhaps about a week or so.
I could tune it so that at max vol it won't give no more than..lets say 25volts out of it. So the maximum power output would be rated somewhere at 600W.
Does this sound anything like I could still have a working amp until I get new parts into it? Perhaps about a week or so.
Unless there is no way to increase the bass or the sub output from the head unit and no way to increase the bass level (remote) from the amp, it's not likely to work. Can you disconnect some of the speakers, some of the voice coils (in the case of DVC woofers) to lighten the load? That's likely the only foolproof way to protect the amp.