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Post by davethreshold on Dec 16, 2016 23:25:10 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 Yes, I know, and thank you. This should accomplish the goal of a bit more hum cancellation goin to the amps. I noticed when I got my second balanced Threshold, that some odd noises and a bit of hum went away. I have my computers right by the Pre-Pro and that makes it more difficult. I have the Pre-Pro right next to me. I was getting a tiny weird cricket sound from it, but not after I went balanced. LOL
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Post by vcautokid on Dec 17, 2016 0:49:12 GMT -5
Hmmm, interesting topic. I always wonder since it is basically asleep, an amp is drawing very very little. At idle about a bit more than your average light bulb. Nothing really that earth shattering I know. I guess I never really worried about vs. what was next on my playlist. Maybe Led Zep, Orleans, Beatles, or...just saying I guess I never really worried about it. I think whatever the consumption it is, the joy it gives in return is way more than worth it.
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Post by ngmitter on Dec 17, 2016 8:05:14 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. I agree, but I have seen several people run their amps in "idle" mode all the time. I don't understand it. I've used a 12V trigger since day 1 with all of my systems.
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Post by tchaik on Dec 17, 2016 16:43:45 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. as kermit says………. it's not easy being green………….
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Post by davethreshold on Dec 25, 2016 3:21:26 GMT -5
A few hours ago, my XPA-3 Gen I, Christmas gift to myself has landed! I feel a bit odd posting this on Christmas, but I had to. It was about $425 out the door from Audio Consultants in Libertyville, IL. (if it's o.k. to mention them) From a few hundred bucks to many thousands they show no pretention or any noses raised up in the air at you. I have to buy 3 Balanced, XLR cables anyway, so it'll be a few days before I hear it. (Mini-Grrr) I am currently using TWO computers near it so I'm going for as much noise rejection as possible. Anyway, I'll search all about Emotive XLR's and may wind up going with them. Glad I looked up the correct pronunciation of, "Emotiva" so I did not sound like a TWEEB! For the heck of it, I’ll report back on the power draw, but I expect it to be as others have said above. Thank you all, and have a Merry Christmas, or whatever else you may celebrate for the holidays! :-) Dave, the audio slave.
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Post by panchakshari on Dec 25, 2016 4:33:01 GMT -5
Hi all.. Kindly help me to resolve issue with XPA5 Gen-1. Very recently I have noticed that, my XPA5 was giving blurr noise from surround speakers, after 10-15 seconds of power off. It's only 1 or 2 seconds..One of my friends suggested that, it was discharge of power from capacitors..Is it..? Is there any chance to harm my speaker's..? Right now, I contacted to 4surrounds and one centre..For mains( Polk LSiM 707).. XPR5..I don't get noise from XPR5 outputs..
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Post by davethreshold on Dec 27, 2016 2:17:26 GMT -5
Hi all.. Kindly help me to resolve issue with XPA5 Gen-1. Very recently I have noticed that, my XPA5 was giving blurr noise from surround speakers, after 10-15 seconds of power off. It's only 1 or 2 seconds..One of my friends suggested that, it was discharge of power from capacitors..Is it..? Is there any chance to harm my speaker's..? Right now, I contacted to 4surrounds and one centre..For mains( Polk LSiM 707).. XPR5..I don't get noise from XPR5 outputs.. You should start a separate thread for this. It is a different amp, and a different problem.
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Post by leonski on Jan 19, 2017 19:39:01 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. Power Factor:
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Post by leonski on Mar 28, 2017 14:39:57 GMT -5
Because of POWER FACTOR, the numbers of straight Watts / Volts / Amps might not 'add up'.
For Example:
I turned on a 4 foot Fluorescent tube about 5 minutes ago. The numbers change as the tube warms, vor maybe the first 1/2 hour.
VA = 39 Watts = 31 PF = 0.81 Line Voltage = 119.4 Amps = 0.33
The PF is based on the lamp (load) NOT being a pure resistor, but rather having reactance. To the power source, the lamps looks like either a Capacitor or an Inductor.
If the PS in the amp is is NOT purely resistive, you'll get values similar to what I quote. Nothing wrong, it just isn't a straight resistive load.
NOTE: That VA x PF = WATTS.
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