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Post by Entity on May 3, 2012 17:49:07 GMT -5
So I finally broke down after 2 weeks of trying to talk myself out of upgrading speakers and pulled the trigger on ERT 8.3's, ERM 6.3, and 2 ERM 6.2's with XPA-5 to go along with them. I'm loving the laid back, full sound of the speakers, seriously...they are awesome. Though I should have looked at the dimensions of the 6.2's they are giant compared to what I was expecting, they look silly trying to sit back there as surrounds.
Anyway, on to the original point. I upgraded from EMP speakers and the UPA-7, and regardless of how long I ran it, the UPA-7 rarely ever became warm enough that you could even tell it was on. Since installing the upgrades earlier, I've noticed that the XPA-5 is quite warm even though nothing is cranked up (only 65dB on the couch). For anyone who runs the XPA-5 (lots of you!) is it normal for this amp to be very warm to the touch, bordering on hot? Like the outside of a hot coffee mug hot?
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Pauly
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Post by Pauly on May 3, 2012 17:54:46 GMT -5
Mine is pretty warm/hot, but it's nothing to worry about imo. Some of the amps that I've had in the past from other brands ran pretty darn hot (much hotter than my XPA-5) and I never had a problem with them either.
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Post by roadster on May 3, 2012 18:00:30 GMT -5
Better hot outside than inside
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USAFRetired
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Post by USAFRetired on May 3, 2012 18:01:48 GMT -5
To be honest I don't even remember mine being warm and I know it is being played louder than 65db. When I listen to either DSOTM or WYRH on SACD I am playing all five channels at a high volume. Still no heat. Maybe 10db on my Denon receiver is not as loud as I think but with a movie playing at 25db is quite enough. (Maybe the volume control is not db but that is where the digital readout is reading)
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Post by G-Man on May 3, 2012 18:02:12 GMT -5
I've never had a heat problem with my XPA-5 driving ERT 8.3's and 6.3 at robust volume levels for long periods of time. Even in an unventilated cabinet.
You might consider using a temperature probe to get a precise reading on the temps you are experiencing. Definitely don't want to run it above the max threshold.
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LCSeminole
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Post by LCSeminole on May 3, 2012 18:09:09 GMT -5
My XPA-5 has never run anything over just warm to the touch on the top, and that's when it used to run the fronts, center and surrounds. Now an XPA-2 took over fronts duty, and the XPA-5 is now running the center, side surrounds and back surrounds. Because I'm one of those that believes a power amplifier should have a fan that exclusively draws out the heat from the sinks and another fan used exclusively for moving that heat exhaust out of the cabinet, my XPA-2 & XPA-5 run very cool to the touch. I will say that while my XPA-5 has always run relatively cool, the XPA-2 was pretty warm to the touch on the back right corner, which was what prompted me to set up the fans that I now use.
Question, is your XPA-5 in a rack that is enclosed or is it open aired? If enclosed how much space do you have on top of the XPA-5 for air movement, and is there any exhaust fans mounted in the back to pull the heat out?
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klinemj
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Post by klinemj on May 3, 2012 18:15:41 GMT -5
Neither my XPA-5 nor my XPA-2 run hot...warm, yes. Hot like the outside of a coffee cup...no.
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Pauly
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Post by Pauly on May 3, 2012 18:16:25 GMT -5
To add to my previous post, I'm pretty sure I have a DC offset in the AC line problem, which apparently can make an amp run hotter. Emotiva explains that a little here on the CMX-2 product page. So maybe that could be part of your problem with heat. shop.emotiva.com/collections/accessories/products/cmx2
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Post by Entity on May 3, 2012 18:31:00 GMT -5
That's why I'm concerned. With only running the front 3 speakers streaming Netflix at mere 65dB, I'm concerned as to how hot things would be getting if I were to turn things up for a couple of hours.
The amp is sitting on a shelf, free air to the sides, and 6 inches of clearance on the top with no other heat source around it. Without having an actual temperature probe to give exact temps, it's hard to say exactly how hot...but it's definitely running hotter than anything else I have on, even the hot exhaust out of either the 360 or the PS3. The Legend amps would probably be hotter, but I do run fans on them as they get way too warm for my liking.
I may have to get something to check the temps, does anyone know what kind of temperatures it should really be running at, or do I need to check with Emo?
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geebo
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Post by geebo on May 3, 2012 19:34:10 GMT -5
I have the XPA-5 running a pair of 8.3s, a 6.3, and a pair of ERD-1s. The top gets what I call warm but not uncomfortable to touch. But then, I came from an Onkyo receiver that you could fry an egg on.
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Post by slk55amg on Feb 2, 2019 15:40:53 GMT -5
My Xpa 5 Gen 1 runs cool. I do have a very small fan on it, and a small fan on my receiver, Sony ES5300, both units run cool after being on all day.
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Post by leonski on Mar 8, 2019 20:47:40 GMT -5
That's why I'm concerned. With only running the front 3 speakers streaming Netflix at mere 65dB, I'm concerned as to how hot things would be getting if I were to turn things up for a couple of hours. The amp is sitting on a shelf, free air to the sides, and 6 inches of clearance on the top with no other heat source around it. Without having an actual temperature probe to give exact temps, it's hard to say exactly how hot...but it's definitely running hotter than anything else I have on, even the hot exhaust out of either the 360 or the PS3. The Legend amps would probably be hotter, but I do run fans on them as they get way too warm for my liking. I may have to get something to check the temps, does anyone know what kind of temperatures it should really be running at, or do I need to check with Emo? only 65db? How do you know that? Conversational speech @1meter might be about 60db while a vacuum cleaner might be about 70db at the same 1 meter. That being said? The main drive on how hot the amp gets might be a mis-adjusted BIAS. With that turned 'up', the amp will draw more power and run hotter at idle. By the time the amp is biased well-into Class 'A' it'll really draw some power and run very warm indeed.......which is why even modestly powerful 'A' amps are so darn heavy.
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Post by fritz on Mar 9, 2019 6:17:22 GMT -5
Mine is a Gen 2 and stays maybe luke warm.
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Post by leonski on Mar 10, 2019 3:02:57 GMT -5
Any way to measure the IDLE power draw of the amp? A Kill-A-Watt meter is accurate enough and maybe 20$ to 25$ dellivered If this value is high, it's likely the BIAS is adjusted too high. This is basically a meter and screw driver adjustment which SHOULD be done by a tech. I'd HOPE that the guys emo would know what the Kill-A-Watt should read.
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Post by donh50 on Mar 10, 2019 10:19:29 GMT -5
It's a class AB amplifier at heart and has significant idle power. Chances are it will run only a little warmer at moderately loud or even loud volume as the average power will still not be much more than the idle power. If you can rest your hand on it and there is good airflow around it I would not worry. Mine is driving five pretty inefficient speakers, lives in a cabinet with a few inches above but only an inch or so on the sides, no extra fans, and has not had any problems in the roughly ten years I've been using it (XPA-5 gen 1).
FWIWFM - Don
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Post by Cory Cooper on Mar 10, 2019 10:56:10 GMT -5
Hello,
I measured my XPA-5 (Gen 1) with a Kill A Watt meter a while back, and it draws 70.1 watts when powered on (not standby) with no signal.
Hope that helps,
C
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Post by leonski on Mar 10, 2019 12:44:41 GMT -5
Cory, Thank you So Much for the first data point. If your amp is 'normal' and sits fairly cool with a touch of warmth? I'd then expect Entity's amp to idle over 100 watts. IF my theory is right.
And donh50? We'd agree, I hope, that the 'how hot' by touch question is fairly subjective. I have an IR camera I could use, but I"m not near any EMO gear and expecially an XPA-5. YOUR XPA-5 sounds 'normal'. Any chance of getting an idle power reading from a Kill-A-Watt?
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Post by Cory Cooper on Mar 10, 2019 13:04:15 GMT -5
Yes, mine is warm to the touch, even when playing. I wouldn't call it hot by any means. It has good clearance all around - 2.5" on top, 6" on right side, 10" rear, 12"+ on left side.
C
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Post by millst on Mar 10, 2019 13:07:01 GMT -5
Way to necro a 7 year old thread.
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Post by donh50 on Mar 10, 2019 21:02:58 GMT -5
About the warmest people can tolerate is 110~115 degF. 120 degF (50 degC) is too hot to leave your hand in place. Rise inside the component varies but 40-50 degC is pretty typical so if it is too hot to rest your hand on it, the inner temperature is probably above the normal industrial temperature range (85 degC) and well above the commercial range (70 degC).
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