"Patrick Turner" wrote in message
...
[...]
The vast majority of users are technically illiterate, through no
fault of their own.
They cannot be blamed for buying ARC and other major "reputable" brand
names of audio gear while thinking they can use it without special
mains arrangements to get reliability if the mains voltage is 13.7%
above the labelled input mains voltage on the unit they buy, ie,
252Vrms instead of the labelled 220Vrms.
Obviously (on paper) ARC's operate within spec even at .au supply.
VT200 Power requirements: 105-125VAC, 60Hz (210-250VAC, 50Hz);
990W at rated output; 1200W maximum; 680W at idle.
(not from the manufacturer's site)
VT200 MKII Power requirements: 105-125VAC, 60Hz (210-250VAC, 50Hz);
990W at rated output; 1200W maximum; 680W at "idle".
Complete spec, see:
http://www.audioresearch.com/vt200.html
VM220 Power requirements: 105-125VAC, 60Hz (210-250VAC, 50Hz);
620W at rated output; 900W maximum; 400W at "idle".
Complete spec, see:
http://www.audioresearch.com/VM220.html
The damn hi-brow makers AND low brow makers SHOULD ensure that users
are made aware of the pitfalls of incorrect mains voltages. But they
all know any mention of anything technical or of any possible negative
outcomes is detrimental to sales figures. They think its better users
burn their gear to bits, with an attitude of utter carelessness about
their customers.
A bit hard to find but ARC actually say something about it, quote:
"Factors which can shorten tube life include inadequate
ventilation, overdriving loudspeakers at continuously high
volume levels, severely fluctuating A.C. line conditions (e.g.
sagging line voltage during summer peaks of air-conditioning
demand), or severe interference pulses or electromagnetic
interference. Power-conditioning products such as line filters,
isolation transformers and the like may or may not help sonic
performance, particularly when used with power amplifiers;
contact your dealer for professional advice. A dedicated 15-amp
or 20-amp A.C. circuit for your power amplifier is the most
effective solution for power-starved audio systems".
[...]
Regards,
Gio