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Post by garbulky on Nov 3, 2013 16:23:39 GMT -5
Emotiva reccomends against using power conditioners and plugging directly into the wall. Even if the power conditioner can handle the load, it may not deliver the change in demand of power quickly enough. (or it may). But unless you have audible power problems without it, I would reccomend without. And if it sounds worse of course plug it back in.
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rontj
Minor Hero
Posts: 95 
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Post by rontj on Nov 4, 2013 17:13:43 GMT -5
Emotiva reccomends against using power conditioners and plugging directly into the wall. Even if the power conditioner can handle the load, it may not deliver the change in demand of power quickly enough. (or it may). But unless you have audible power problems without it, I would reccomend without. And if it sounds worse of course plug it back in. The FAQ does say, "It is recommended by Emotiva to plug your amplifier directly into a wall outlet. That being said, several Emotiva users have used their amps in conjunction with surge protectors without issue. If you decide to plug your amp into a surge protector, make sure to use the proper bank of outlets labeled high current on your surge protector. Common, everyday household surge protectors may limit the current to the amp while HT designed units such as APC, Panamax, Monster, etc... will have outlet banks specifically designed for such applications. These banks of outlets do not limit the current to the amp which the need to perform to specified capabilities." I have a PS Audio line conditioner, and all outlets are passive, no limitation of the current on any outlets. But, for kicks and grins, I do plan on plugging it straight into the wall to see if there is a change in behavior with the clicking and half second hissing from my speakers. |
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rontj
Minor Hero
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Post by rontj on Nov 4, 2013 17:24:29 GMT -5
Just spoke to Joe Jr at tech support, and he's not concerned about it. Says that due to my speakers being a bit on the sensitive side (94dB), they may be exaggerating some noise as the amp is powering on, but he's really not concerned about it, so, neither am I. All good!
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Post by brendelac on Nov 9, 2013 20:21:12 GMT -5
My XPA-5 also has the brief speaker hiss as well as a soft thump in the right surround speaker which is connected to channel 2 on the Emo. It has to be very quiet to hear the hiss, while the thump is not loud, but noticeable from anywhere in the room.
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Post by sme on Nov 11, 2013 13:28:34 GMT -5
I get the hiss at startup even when I power cycle my XPA-5 separate from my Denon AVR. My speakers are 92 dB/2.83V/1m sensitive, so that probably makes a big difference. Also, the hiss doesn't disappear instantaneously for me. Instead, there is a bit of trailing off (a kind of squeaky "pffth" sound) over the last 1/2 second or so. Neither sounds are particularly loud, being maybe 40-45 dB at the listening position. I may not notice it if the forced-air heat is running.
Also, when my amp is running, I hear low-level hum and hiss from my speakers if my ears are within 6 inches or so. If I crank the AVR level up to "0" (calibrated theater reference level), the hiss is audible at maybe 12 inches or so. The only noise I can hear at the listening position is the transformer hum of the XPA-5, which is louder than my home theater PC but quieter than my PS3 slim. I may try an Emotiva CMX-2 once they are back in stock.
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