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Post by davethreshold on Dec 15, 2016 21:53:03 GMT -5
Hi All.
A friend has the original XPA-3, 3 channel amplifier to sell. I am thinking of buying it. Can anybody tell me how much power it draws from the wall, when turned on, with no music going through it? IOW the power button on, but not playing anything. One way to measure it would be with a Kill A Watt, in line a.c. meter for instance.
I can not find it in the specs.
Thank you!
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Post by Cory Cooper on Dec 16, 2016 6:30:03 GMT -5
Hello and welcome.
I measured my XPA-5 with a Kill A Watt meter a while back, and it draws 70.1 watts when powered on (not standby) with no signal.
I know it;s a different model, but I would guess the XPA-3 would be around the same draw.
C
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Post by Jim on Dec 16, 2016 6:44:43 GMT -5
Hello and welcome. I measured my XPA-5 with a Kill A Watt meter a while back, and it draws 70.1 watts when powered on (not standby) with no signal. I know it;s a different model, but I would guess the XPA-3 would be around the same draw. C I seem to recall my XPA-1 being very close to that at idle as well. (Just for reference)
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Post by davethreshold on Dec 16, 2016 7:31:38 GMT -5
Hey, thanks guys! That is exactly the info that I am looking for. This will give me an all balanced system, which I need do to long cable runs. Right now, I’m bi-amping with two vintage Threshold amps, and they have balanced ins. My surround, rears and centers have been AudioSource amps which do not. This will make everything simpler, quieter, and better. After looking at the specs on the latest Gen of Emotiva gear, I am really SOLD on this company! – Big fan!
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Post by ngmitter on Dec 16, 2016 10:16:13 GMT -5
Wow, that's a lot more than I expected. That's nearly $100 per year in electricity per amp. I used to think removing all of these parasitic loads was a waste in comparison to energy consumed by heating, cooling, and lighting. However, the more I dig into it, I'm finding how absurd these "idle" power consumptions are for electronics.
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Post by wilburthegoose on Dec 16, 2016 10:36:41 GMT -5
I really wish Emotiva would include power draws on standby on their webpage.
That said - does anybody know the XPA-5 draw while on standby (yellow power indicator on "E" button)?
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Post by RichGuy on Dec 16, 2016 11:13:35 GMT -5
I use both my processors 3 triggers and my PF-60 power conditioners trigger switched controllable outlets to turn completely OFF my XSP-1, XPA-2 and XPA-5 (no lights, no power used at all). When in use my processor will trigger my PF-60 to power ON all three, when using HT the processors triggers will completely turn ON the XSP-1, XPA-2 and XPA-5 but when listening to 2 channel music the XPA-5 will remain in STANDBY.
It's nice having completely automatic power control, both saving energy and I prefer not having the "E" power indicators lit when my system is not in use.
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Post by wilburthegoose on Dec 16, 2016 15:09:27 GMT -5
Doesn't that PF-60 cost over $1K? If so, I doubt you're saving $1K on electricity by using it
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Post by RichGuy on Dec 16, 2016 15:36:06 GMT -5
Doesn't that PF-60 cost over $1K? If so, I doubt you're saving $1K on electricity by using it No it's original MSRP was around $800 or so but it was always available for much less. I think mine was around $200 new with shipping and there was a time you could find them lower probably around $150. They are no longer made so they are becoming harder to find now. The electric bill savings was not even in thought with my decision to buy it though, it was however an excellent addition to my system for many reasons.
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Post by Cory Cooper on Dec 16, 2016 16:52:17 GMT -5
That said - does anybody know the XPA-5 draw while on standby (yellow power indicator on "E" button)? I did another real quick measurement with my Kill A Watt meter, after letting it stabilize for about 5 mins: Idle (blue power light, no signal): 72 W and .90 A Standby (amber power light, no signal): 2.7 W and .02 A Again, that was a really quick measurement...hope that helps. C
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Post by wilburthegoose on Dec 16, 2016 16:54:32 GMT -5
Sweet! Thanks!
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Post by Casey Leedom on Dec 16, 2016 17:21:46 GMT -5
Hhmmm, weird: your idle and standby measurements aren't consistent: V = W/A ...
72W/0.90A = 80V 2.7W/0.02A = 135V
Casey
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Post by Cory Cooper on Dec 16, 2016 17:31:39 GMT -5
Yeah, I noticed that too, but that's what the Kill a Watt meter shows. When I have more time, I can remeasure them and check actual volts and power factor readings as well, to verify the readings.
C
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Post by Dan Laufman on Dec 16, 2016 17:37:49 GMT -5
The XPA G3 amplifiers draw less than one watt on standby... in fact all new models from all lines meet the one watt standby standard. They are "green"!
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Post by RichGuy on Dec 16, 2016 18:09:00 GMT -5
The XPA G3 amplifiers draw less than one watt on standby... in fact all new models from all lines meet the one watt standby standard. They are "green"! I thought they were amber.
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Post by Jim on Dec 16, 2016 18:11:14 GMT -5
Hhmmm, weird: your idle and standby measurements aren't consistent: V = W/A ... 72W/0.90A = 80V 2.7W/0.02A = 135V Casey Killawatt is less accurate at very low amperages in my experience. Same for some current transformers.
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Post by davethreshold on Dec 16, 2016 19:48:16 GMT -5
Great comments. I REALLY need another line up here! LOL This will be = or less than my two other small amps. Then I can sell those. I told him I will buy it, and to hold it for me, and he will! Now, at least I'll be in the "pre-owned" Emotiva club. :-)
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klinemj
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Post by klinemj on Dec 16, 2016 21:28:31 GMT -5
This will give me an all balanced system, which I need do to long cable runs. One heads up - the XPA-3, if I recall correctly is not "fully balanced" circuits. It "accepts" XLR inputs is I believe the language used by Emotiva when the Gen 1 and Gen 2 XPA-3 was sold. The new ones say they have "balanced inputs"...that means, they can take a balanced signal coming in - and you can run XLR cables to it. Only certain of Emotiva's amps are a "fully balanced, Differential Reference™ design", such as the XPA-1. Amps, and other products, sold by Emotiva that are indeed balanced all the way through have that type of designation. Just an FYI. Mark
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Post by hosko on Dec 16, 2016 22:37:25 GMT -5
Wow, that's a lot more than I expected. That's nearly $100 per year in electricity per amp. I used to think removing all of these parasitic loads was a waste in comparison to energy consumed by heating, cooling, and lighting. However, the more I dig into it, I'm finding how absurd these "idle" power consumptions are for electronics. Except that 70w figure is for idle ie full power but with no load, who does that? Why wouldn't you run a trigger so it goes into standby when not in use?
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Post by RichGuy on Dec 16, 2016 23:10:29 GMT -5
Why wouldn't you run a trigger so it goes into standby when not in use? Yes, there is no reason to have it in full power mode all the time. There are many options you can use to either use standby mode or to fully shut down your amps.
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