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In Reply to: RE: Ok, I won't use my ncore for a shaker table....Thanks. posted by pictureguy on August 16, 2015 at 17:51:09
Maybe you should reread my post. I said heat can shorten the lifetime of all electronics.
Yes, B&O and HYPEX run at roughly the same heat output. Again, we aren't talking about B&O, we are talking about HYPEX. If you took the time to look, you would have found that the HYPEX module has integral heat sinks which are sufficient to manage the "heat budget". It doesn't need large external heat sinks so there is, as I have said a few times now, no compromise and no problems with overheating.
try it! you know you want to!
Follow Ups:
Please check out the HYPEX datasheet. Same issues as ICE, but I rather DO like the NC400 hockey puck solution. With the puck firmly secured to a proper under (or perhaps side?) case finned sink I can imagine no reasonable case where this amp would cook off.
The last 2 listings of section #4 / Page #4 clearly talk about temperature AND the 'possible' need for additional heatsinking.
The phrases 'lower improves lifetime' and 'most adverse use case' both support the idea of keeping the temp to the low end.
Please ALSO see Section 10.1 in 'Application Hints', which discusses heat management. I don't think THEY think it is a trivial issue, devoting enough text and some math detailing themal resistance numbers, to give a reasonable DIY a good chance to have a successful implementation. Easy to find, starting on Page #9.
They list a 'sensible maximum' heatsink temp of 80c (=176F) and a 'conservative' ambient temp of 35c. Still pretty toasty. That's pretty darn hot on the heatsink temp, don't you think?
I'm Frankly astonished at the hi temp number of 80c. That is REAL hot. It was 'only' 92F outside today, in my back patio shade, while I was cooking on the BGE, and I assure you, NO WAY would I run ANY expensive electronics under those conditions.
As a complete aside, I was in one of the big box Home Theater stores and they had a couple HT receivers simply COOKING themselves to death on the shelf. The one of 'em in particular not only was very HOT, it also was emitting WAVES of heat. I'm sure a receiver like that would be appreciated in a cold climate!
Too much is never enough
Yes, Hypex pays attention to heat effects. Yes, they have engineered their products with heat dissipation in mind. Yes, too high of heat can shorten the lifetime, or worse case, kill electronics. I haven't claimed otherwise. What I did say was that operating the amp towards the higher end of the approved range has not been shown to affect sonic performance versus operation at the lower end of the range.
No, you can't claim there are "compromises" made with a Hypex product that weights "only" 25 pounds in regards to heat dissipation. That was my point.
I think we have covered all the bases now....
try it! you know you want to!
I think I've settled my Parasound A21 or McIntosh MC 2205 question. I'd forgotten that I had the Proceed HPA 2 and 3 that I replaced with 3 Parasound JC 1s and 2 A23s sitting in the closet. The HPAs are 2 & 3 Levinson monoblocks in an industrial case from the Madrigal era. I'll use the HPA 3 to drive the KEF LS50s until I get the HPA 2 repaired.
db
db would love to have your closet full of problems .... :)
Back to the OP, I have no need for either the Parasound A 21 or the McIntosh MC 2205. The LS50s driven by the Proceed HPA 2 sound great. It turns out the Proceed HPA 2 was fine. I'd forgotten about the little power switch at the bottom of the unit, and I must have kicked that as I walked by. I pressed that button then the large obvious standby button, and the HPA 2 came to life. Our strong carpenter carried the 100 pound amp downstairs and installed it to drive the KEF LS50s.
db
I'm kind of surprised. KEF calls the LS50 sensitivity @85db. And recommends amps up to 100 watts.
But the GOOD news is you are making use of stuff on-hand. The cost of repair to something owned should save a bundle against a totally new purchase.
Too much is never enough
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