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 Yamaha AVR Thread v2.00, Discussions about Yamaha AVR

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ashley17
post Jan 9 2015, 09:34 PM

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all sifus here,

i just got a RX-675 from amazon due to the price is too attractive so i just bought it. tongue.gif

so now i headache that the voltage is different in US n msia and need to get voltage transformer. i found that a 2kW brand TNK voltage transformer i found at ACE hardware shop is about RM400 and a 2kW Teletron brand at jalan pasar is about RM500-600. the price is so much different.

is 2kW transformer sufficient?any other transformer brand recommend beside the 2 brand i mention. hope sifus here can give some suggestion. tq


ashley17
post Jan 10 2015, 02:43 PM

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QUOTE(ozak @ Jan 10 2015, 01:30 PM)
That probably too much. Check the manual what is the running watt? Don't think that high.
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hmm hmm.gif

the manual written of the receiver output wattage is 630W.

and i saw watts for the each channel is :
7-channel powerful surround sound
105 W per channel (8 ohms, 1 kHz, 0.9% THD, 2 ch driven)
90 W per channel (8 ohms, 20 Hz-20 kHz, 0.09% THD, 2 ch driven)

so do i need to add the channel watt with the output wattage or just the output wattage alone?

and i go thru some post mentioned at least 1.3 times of the total watt needed for the transformer to be safe play. rclxub.gif

get abit confuse and hope anyone here can give some opinions notworthy.gif
ashley17
post Jan 11 2015, 01:20 AM

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QUOTE(ktek @ Jan 10 2015, 03:35 PM)
see the printed marking behind avr, running voltage and ampere. the calculation is volt x ampere = watt.
of course there is some heat exchange loss, so u top up a bit.
usually ppl buy 1kw or 1.5kw enough.

dont see output specs on speaker side.
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erm..got only written 120V,60Hz, 400W, 500VA behind, cant find any ampere written. i thk i will go for 1.5kw if the price dint much different with 1kw hmm.gif


any recommend on brands or place to buy the transformer? the teletron brand in pasar road is so much exp thn TNK in ACE hardware. shocking.gif how come a? is teletron brand better? or both just work as same? i just afraid it will burn my avr down tongue.gif
ashley17
post Jan 15 2015, 11:32 AM

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QUOTE(ozak @ Jan 12 2015, 10:50 PM)
If put the PF at 0.9 = 400w/(0.9x120v) = 3.7A.

There is another thing to consider. Here is 50hz. While US is 60hz.
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so any idea to solve this out? hmm.gif

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