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Power Strips bad for audio? - Page 2

post #16 of 21
Like I said.. can't answer that... All I can tell you is that my Monster PB1100 made a nice difference and I'm a satisfied owner.

markl
post #17 of 21
well my .02

i don't know much at all about power and high end audio...

but i own an isp, i have a roo m full of equipment that costs far more than just about any stereo rig you can dream up.

in my experience people worry so much about voltage spikes but never seem to think for a minute about voltage drops.

i have seen a LOT more voltage drops than spikes.

i rely on ups' - that stands for uninteruptible power supply...

there is a huge difference between ups's, i bought one brand originally and was happy with it and then came upon another brand that cost a little bit more but seemed better.

i moved to a different building where there was electrical interference and the one brand that was a little bit cheaper didn't stop the interference, but the other brand did.

so anyway, i ONLY use APC brand ups' www.apcc.com

i am not related to the company in any way etc. etc.

but i would start with a UPS. I have APC ups' on my home theater as well as all computer stuff at the home and of course the office.

people spend a fortune on these power cables, the power cable can't condition the power coming out of the wall!

matthew
post #18 of 21
The current rating is a short term rating. Usually a few milliseconds or so. The wiring and circuit breakers will allow such a current flow for such a short time. The real problem is the reactive elements in the filter cause the delivery of power to be delayed slightly from the time that the demand is first presented. What happens is the amp draws a "pulse" of power and the current does not get there immediatly due to the delay in current flow caused by the inductance. That causes the voltage to sag momentarily till the current can catch up to the demand. Inductors cause current to lag behind voltage. (Caps do just the opposite.) There is an entire industry built around these issues, which are magnified in industrial applictions (huge motors and such). Do a web search for "power factor correction". Tons of info avaliable.
post #19 of 21
thanks budgie; This power factor correction stuff is very interesting. After browsing the web, it seems like PFC is very expensive and mostly for industrial application. So, this will apply to Mathew's experience with voltage sag. The UPS is like a pseudo-PFC and will correct voltage sag somewhat.

However, inductor based power filtering will make matter worse. Unless, the harmonic current in the home is small and so it is insignificant compared to an industrial complex.

Back to audio, if my logic is correct, then there are two factors affecting quality of the sound, harmonic current and RFI/EMI. And both of them are facility dependent. In some cases, power cleaning will help and in some cases it won't. Everyone will get a different result.

So it will be interesting to find out if you need power cleaning or not. If you listen to your music upstair and have someone turn on the dryer downstair, if you can hear when the dryer is turn on, then you'll need PFC. Or if you have someone turn on the florescent light and you can tell immediately, you'll need some power cleaning. And if you can't tell the difference, you'll save a lot of money. In any case, PFC is reasonable in cost compared to some of the power cable.
post #20 of 21

I've got...

...the Monster Powerbar HTS1100 and it has positively impacted my system. I wrote this in some post on here...the biggest difference was with my Dual CS 5000 turntable mixed w/my headphone rig. The sound went from relatively flat and uninvolving to gushingly emotional. The soundstaging improved in that it sorta expanded from side to side to the point that it pretty much "connected" in front, so I got more of a complete, all-around image.

On the digital end, the changes were less pronounced, but there. The major thing was the soundstaging, which, again, expanded and "wrapped around front" amongst other small gains in transparency, smoothness, micro-details, etc. Regardless, the soundstaging gains were quite pleasing.

Overall, I feel that the vinyl rig gains were more than worth the $150 I paid for it and everything else was, as they say, "gravy."


- Sir Mister Matt
post #21 of 21
My two cents..........

BRICKWALL SURGE SUPPRESSORS


Stick a Brickwall device into your outlet, and use power strips with or without surge suppression into it. Works GREAT.
15 amp one is about $140, 20 amp one about $200.

Realling great filtering too.

But no pretty lights, colors, relays, or fancy name.
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