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Well, only stored. With temps topping out at 118-120 all week it was finally time to unhook the Latino ST-70. At least until around October or late September.
But don't worry because I hooked up the Sherwood S-5000 in it's place - oh I love that stereo! Yes it's tubes but it puts out far less heat.
In between I like to rotate my Conrad Johnson Classic 2SE preamp and fully restored Marantz 250M power amp. Kind of a Spring Fall type setup.
I also have a NAD C275BEE power amp. However that actually puts out as much heat as the ST-70. It's a cooker!
My 2A3 amp puts out very little heat.....and very little power, too. Perfect for summa.
Ya, we were all worried about what you were going to do about that. All kidding aside, it's only in the 90's in Prescott. Still using tubes, although it's only a 8 watt per channel amp.....
When I got in my Jeep the thermometer read 132 degrees - Yowza! the next few days they are predicting 118 or so. But in the sun (132 degrees) it's killer! We lost five hikers in the last two days from the heat.
How's the fire situation up there? I was just hiking up there just before the fires.
No fires here in Prescott....
It's a dry heat. :)
I'm also in the Phoenix area, sort of adjusted to it by schedule and activities. Bike ride and other things outside 5AM to around 9AM. In the pool 5:30PM to 8:30PM.
Some years switch to lower power tubes, but solar panels and more BTU's compensate for the tubes.
Even in the sun I can hike into the low hundreds. Once it gets above 104 you are taking your life in your hands. Something about 104 seems to be the human physiological cut off point.
this time of year in central Arizona the news reports a death or two a week, mostly tourists, that die because of the heat. Last week three Germans and three locals in their 20's.
I still work in the yard or in my garage for an hour before I have to either sit down or go inside to cool off. You do acclimate to higher temperatures. I prefer and feel more comfortable with temps in the mid 90's
how high do you allow your listening room to rise? Do you require frequent hydration?
I've got sixteen 6550C outputs going in my amps. Upstairs thermostat set to 79 with ceiling fan on low speed. Quite comfortable for me. :)
Is the chassis lettering in Spanish?
I have a Van Alstine fet valve hybrid amp that also gets as hot as my tube amps. Have you ever considered bolting a fan to the top of your st70's cage to keep it cool during the summer? A really large 220v fan running at 120v seems to do the job and doesn't really make any noise.
We modify ST-70s using the 6SN7 tubesforhifi 6SN7 board. With the earlier power transformer the extra heater current draw causes the transformer to run hot. We use a wimpy but quiet little 12 volt fan run at 9 volts. You can't hear it from 3 feet away.
It took a transformer from to hot to leave your hand on (too hot!) to just warm (you could leave your hand on it comfortably all day) in 20 minutes.
Since transformers are just insulation, copper wire, and iron, as long as you cool them you can run them over spec without trouble.
Based on that and another experience, it is amazing how little air you have to move to make a major difference in temperature.
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