vishsolanki
New Member
Anyone in Pune area know place to buy "Isolation Step down transformer" ....i have auto type..1000W for Onkyo 7300 ...but still not setup...cautios
Does anyone know if it is possible to convert the freq. from 50Hz to 60Hz as well along with the voltage conversion? It doesn't seem very easy, and insanely expensive to say the least, but was curious to know if anyone has done it. Vishal elecotrincs told me that their transformers output at 60Hz, about which I am very skeptical. The reason I'm worried is that some user had reported overheating issues with the sub when used with a transformer, and frequency difference could be the culprit. In general, most devices would be tolerant of that 10 Hz difference, but if something isn't, what should be done? Is it possible to change the transformer of the amp inside the subwoofer from 120V/60Hz to 220/50 ?
By the way, the user's experience that I was talking about had been posted on:
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Yes, it's difficult to say what the exact cause for his overheating might be. In any case, I would be trying out the isolation transformer from Vishal in a week or so. That seems to be the only alternative anyway. I would post about the experience soon.
While I dont profess to be a wiz at electronics, I must point out to a couple of points in Sachin's saga that stick out like a sore thumb:
1. The 110V unit was connected directly to a 220V supply and as expected, the internals got fried
2. As far as I can make out, the unit was not checked by any competent technician
IMHO, the issue here seems to be other than the 50/60 hz problem. Along with the fuse, some other resistors/capacitors inside the amp must have been damaged and not attended to, leading to the kind of overheating that Sachin is experiencing. Or, if any of the blown resistors/caps were replaced by the friendly neighbourhood repair man, they were likely replaced with parts having different values, resulting in this kind of overheating. Maybe if he were to get the unit serviced by a good technician, it would work fine.
FWIW, I have been using transformers for about 11 years now, without a single issue......
Cheers
do we need step downs? I remember a tweak mentioned for subwoofers and amp for converting 110 to 220 as most international brands have both the taps on their transformers.
I was looking for a step down transformer and came across this MDR Electronics - MX Electronics - Home Theater Cables & Connectors - Computers & Laptop Accessories - Pro Audio / Studio Audio Cables & Connectors - Audio Video Components & Accessories - Fiber Optic Component & Accessories - Cable TV Component & Ac
It says it gives a sinusoidal wave form and goes up to 2500 watts. At that size i don't think anyone can fit a transformer in there that provides 2500 watts, so this has to be some sort of solid state converter, but how does it give a sine wave output ? Does anyone any experience with this product ?
Don't think i'll trust my equipment to this though.