BobSaysHi
Headphoneus Supremus
- Joined
- Jun 28, 2010
- Posts
- 3,370
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- 96
lmao. I wouldn't have spent so much on your speakers and bought new ones.
Sorry for being so ignorant about this. I decided I would take apart the powered sub...Easier said than done. I wound up destroying the box....Of course, I didn't harm anything else, but I guess I'll have to be building me a new sub box sometime...
Anyway, the model number is Z313. It cost me $30 on sale....Does the job mostly.
Not sure how huge these pics are going to be, but here it goes....As you can see, really cheap stuff on board. It's not like they really have a choice....for the price they want to sell at. I think I'm going to replace value for value on the electrolytic caps with a higher quality alternative. I might see if I can get a better sub. Again, it was cheap, so I don't really mind messing with it too much.
Oh and yes, the inline volume adjuster absolutley sucks. How should I fix that? It cracks and I have to fine tune it to get both satellites working at the same time...Pretty annoying
Caps by Chang, CapXon and Samxon. All general purpose as far as I can discern. Pretty crappy....Note the LOVELY rectifier circuit.
The heat sink for this thing has about as much potential as a piece of aluminum foil.
Too much inrush current....Hmmm....Bigger heatsink to cover that?
It has a massive transformer by the way. Don't know the actually output spec, but I think it would have to be fairly decent. Probably either @ 16V or 25V.
i just decided to do my logitech sub, works a treat, though can't test at any kind of volume at this time in the morning....
connects via 2 phono to the tape outs on my amp, the squiggly wires on the volume pot are for support ^_^ thought about using those caps but i couldn't get them to fit, oh well...hotwired the on switch cable to ground so it's always 'on' now, bass is adjusted on the back of the sub.
shame i don't have a drill, could have mounted it all in the sub itself. will report back tomorrow on this £10 subwoofer
Quote:Sorry for being so ignorant about this. I decided I would take apart the powered sub...Easier said than done. I wound up destroying the box....Of course, I didn't harm anything else, but I guess I'll have to be building me a new sub box sometime...
Anyway, the model number is Z313. It cost me $30 on sale....Does the job mostly.
Not sure how huge these pics are going to be, but here it goes....As you can see, really cheap stuff on board. It's not like they really have a choice....for the price they want to sell at. I think I'm going to replace value for value on the electrolytic caps with a higher quality alternative. I might see if I can get a better sub. Again, it was cheap, so I don't really mind messing with it too much.
Oh and yes, the inline volume adjuster absolutley sucks. How should I fix that? It cracks and I have to fine tune it to get both satellites working at the same time...Pretty annoying
Caps by Chang, CapXon and Samxon. All general purpose as far as I can discern. Pretty crappy....Note the LOVELY rectifier circuit.
The heat sink for this thing has about as much potential as a piece of aluminum foil.
Too much inrush current....Hmmm....Bigger heatsink to cover that?
It has a massive transformer by the way. Don't know the actually output spec, but I think it would have to be fairly decent. Probably either @ 16V or 25V.
nice pics you've actually got better quality parts in there than my ubercheap one, but the sub is the same as my other logitech i think, but i've no intention of hacking that one up haha...
"Too much inrush current" inrush current is the juice the main filter caps initially draw from the mains as they fill up, too much and you'll nuke your fuses, even the rectifier diodes probably, but your diodes look quite beefy, might handle a little increase in capacitance? there is bound to be a way of calculating inrush current with voltage and capacitor size and ESR and stuff, but i don't have a clue