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vintage amplifiers with funky cooling schemes

Robisme said:
Sansui used it in quite a few pieces of gear.

Z-3000X, Z-5000X

8900ZDB (I believe), 9900Z

AU-D9, AU-D11

Others I'm sure, but that's off the top of my head.

I have a Z-5000X and have never had a problem with heat.

Rob
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Z-9000x also
 
Quote: "Pretty sure the "liquid" in most of these heat pipes is mineral oil(no pcb's)."

Do you suppose anyone has tried replacing the stock fluid with snake oil, to enhance the synergy between the amp and their esoteric speaker wire / interconnects ?
 
DEAFASABAT said:
Quote: "Pretty sure the "liquid" in most of these heat pipes is mineral oil(no pcb's)."

Do you suppose anyone has tried replacing the stock fluid with snake oil, to enhance the synergy between the amp and their esoteric speaker wire / interconnects ?
Click to expand...

LOL... now you've said that... I'm sure someone will try or know someone who did....
 
SVI2004A said:
LOL... now you've said that... I'm sure someone will try or know someone who did....
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I use a high-end, waterless coolant (costs about $50/gallon!) from a company (Evan's Cooling) in automotive vehicles or anything that uses a radiator & anti-freeze/coolant. It eliminates rust, oxidation, corrosion, electrolysis, waterpump cavitation, and best of all... pressure. I personally have opened up the radiator cap on a vehicle using THIS coolant that was up to full operating temperature (using a shop rag, of course) and all it did was make a small 'pop' instead of blasting a stream of boiling hot coolant 10 feet into the air, via my face first. Its boiling point is 375°-400°!!
Maybe this coolant would work well in amps that are liquid cooled via water-based coolants or possibly even other liquids? Who knows??
Hey, just throwing some good information out there, seeing if it might stick.
 
patriotoil said:
I use a high-end, waterless coolant (costs about $50/gallon!) from a company (Evan's Cooling) in automotive vehicles or anything that uses a radiator & anti-freeze/coolant. It eliminates rust, oxidation, corrosion, electrolysis, waterpump cavitation, and best of all... pressure. I personally have opened up the radiator cap on a vehicle using THIS coolant that was up to full operating temperature (using a shop rag, of course) and all it did was make a small 'pop' instead of blasting a stream of boiling hot coolant 10 feet into the air, via my face first. Its boiling point is 375°-400°!!
Maybe this coolant would work well in amps that are liquid cooled via water-based coolants or possibly even other liquids? Who knows??
Hey, just throwing some good information out there, seeing if it might stick.
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Most nuclear powered submarines use liquid sodium for cooling. Could be overkill for cooling an amplifier.
Or just plain kill, if it leaks out.
 
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I have my NAD sitting in a fish tank filled with mineral oil. ;)
In seriousness, as mentioned the Technics SU-vX, vXX, vXXX, and zXX lines had heat pipes and heat sinks similar to that you would see on a CPU in a computer. I'm sure there were other Technics that had it and I just don't know what they are.
 
elnaldo said:
I think the most evironmentally friendly action would be to keep the freon inside the tube and never release it to the atmosphere.
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Yes, once it's manufactured, the imperative is to keep it sealed and sequestered. Unless a one has the recapture abilities of HVAC shop.
 
Scott75s1974 said:
Yes, once it's manufactured, the imperative is to keep it sealed and sequestered. Unless a one has the recapture abilities of HVAC shop.
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In these receivers that actually have freon in them there is such a small amount the environmental issues would be null and void. Just think about commercial ac a refrigeration. Some units leak a little every year and by law they don't have to be repaired unless they leak more then a certain percentage of charge each year. Think about a system that holds 20 pounds of freon. Something happens and all the freon is released into the atmosphere. (Happens more them anyone would think). What would it take, maybe 200 receivers probably more to equal that amount of freon leaked.
 
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