Ali-Pacha
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Been rude
Ali
Ali
Headamp Blue Hawaii Special Edition
- Thread starter audiosceptic
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That's a shame and sucks for the ones that want that color. I guess it makes the existing ones even more of a rare bird now.
Earspeakers
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How obnoxious and unbusinesslike, stupid to make it come off personal like that, whatever the reasons.
It's the oddball of the bunch and costs (costed) $400 more, so we can hope it won't bother too many folks.
Earspeakers
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Question to the group about the power consumed/heat thrown off by the unit. I believe it consumes about 200W, how much of that (estimated probably) is from the power supply unit and from the amplifier? Given the heatsinks and probable circuit I'm guessing 20%/80% (PS/Amp), but if somebody with a unit could give me an estimate that would be helpful.
I'm looking at putting it into a cabinet and need to have an idea of the heat thrown off to know if this will work.
I'm looking at putting it into a cabinet and need to have an idea of the heat thrown off to know if this will work.
astrostar59
BannedMember of the Trade: Aries Cerat Espana, Auriculares High-EndAKA Headstage, headphoneweekend
Having run valve pre-amplifiers and SET power amplifiers, I would strongly advice not to house any tube based amplifier in any kind of enclosure. The tubes dissipate a lot of heat, and the PS and circuits inside the BHSE the same. Any reduction of airflow of ambient room temperature will result in the amplifier overheating. Even if this did not kill the amplifier the amount of heat in an amplifier directly equates to component life.
Build a nice shelf unit with open air to your BHSE. It will be better. Ask Justin if not convinced....
alcyst
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Don't (yet) know how the BHSE runs, but the power supply of the Eddie Current Balancing Act gets pretty warm, verging on hot. The valves on the amp are prominent enough that it would be difficult to enclose that part. The power supply is a neat box, has no visible, pretty glowing bits or switches, and the temptation would be to hide it away. There are "two 6X4 rectifier tubes" in the power supply of the BA.
Earspeakers
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Having designed and built valve pre-amplifiers, SET power amplifiers, and $1M scientific instrumentation at work I'm aware of dealing with heat. Thanks for the concern, seriously, but I know what I'm doing.
Interesting thing about heat. Colleague of mine said once, "all we're doing is making it smaller and use less power (and thereby produce less heat)". Lot of truth in that. I remember considering working for Intel once. Basically all they cared about is how much you knew about heat (or power dissipation and management specifically).
astrostar59
BannedMember of the Trade: Aries Cerat Espana, Auriculares High-EndAKA Headstage, headphoneweekend
Ok that's good. If you know / are an expert, why ask the advice??????
You go built in in and see how long before it overheats.....
Earspeakers
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Read my post, I didn't ask for advice, I asked for an estimate of how much heat the power supply throws off relative to the main unit.
I would say the surface of the BHSE power supply gets hotter overall than the surface of the main unit. Excluding the tubes themselves of course.
Difficult to guess what the percentage would be because the main unit has finned heat sinks whereas the PS uses the enclosure as its only heat sink, but my guess is the PS dissipates more than 20%.
I personally would not put the BHSE (or any Class A or Tube amp) inside a cabinet (assuming with closed sides). Nothing to do with calculations, just a vague feeling that the hotter you run anything above its intended normal working temperature, the more likely something will fail.
Difficult to guess what the percentage would be because the main unit has finned heat sinks whereas the PS uses the enclosure as its only heat sink, but my guess is the PS dissipates more than 20%.
I personally would not put the BHSE (or any Class A or Tube amp) inside a cabinet (assuming with closed sides). Nothing to do with calculations, just a vague feeling that the hotter you run anything above its intended normal working temperature, the more likely something will fail.
heat of the power supply will vary depending on your AC line voltage. higher line voltage = more heat.
Golfnutz
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About 3 hours use so far, and using a coffee thermometer I read just under 120F on the main unit, and around 117F on the power supply. With the probe against the base of a tube, it reads 140F. Main unit is on top shelf of open rack, PS on bottom shelf
David1961
Headphoneus Supremus
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Although I'm extremely happy with my main headphone system, the 009 / BHSE / K-01 and now that includes the 003mk2, if there's anything I see that might make the SQ even better, then I'll give it/them a try.
I've tried tube dampers but didn't hear any difference, then tried the PH tubes and found they made a huge improvement, but after seeing Richard's post about the SR Red fuses, I thought I'd give one a go.
All my audio equipment is plugged into my Bybee power purifier, and that's plugged into a UK socket, so the SR Red fuse I got is a 13A, and I have to say the SQ I'm hearing has gone to another improved level, and that's even with the 003mk2.
I'm not that good at describing SQ but all I can say is the SQ I'm now hearing sounds like it had a shot of adrenaline.
So I'd like to thank Richard for making aware about SR Red fuses because I'd never heard of them before.
astrostar59
BannedMember of the Trade: Aries Cerat Espana, Auriculares High-EndAKA Headstage, headphoneweekend
Ha, another poster who has seen the problem it may cause. 'Earspeakers' you gonna attack 'theatorney' as well as me.....
Anyway, if you were to build such an enclosure, and Justin knew about it, I would bet he wouldn't be too happy to honour warranty by 'cooking' his amp.
Nice to see actual measurements! The hottest part of the PS is on the RHS towards the rear. After about 4 hours, it's the only part of the BHSE combination that I wouldn't want to touch for more than a few seconds (appart from the tubes of course)
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