Article in the June issue of AudioXpress "Evaluation of Automotive Energy Efficiency" by Phillip Paul Klose.
The losses in the audio system would seem trivially small compared to moving the vehicle.
The losses in the audio system would seem trivially small compared to moving the vehicle.
Next article they need to write is "Evaluation of Audio motive Energy Efficiency".
would be interesting whether streaming music from the web consumes more energy than amplifying it with a big class A amp ...
I'm sorry, the correct title is "Evaluation of Automotive Audio Energy Efficiency"
When I was a kid, my Dad had an old tube AM set (from another car) with the mechanical vibrator underneath the driver seat in his VW bug. Measure the current on that, compare with the current coming off the generator, calculate a percentage, write an article.
I always found the vibrator part fascinating back then.
I always found the vibrator part fascinating back then.
In the late 1950's Ford, Mercury and Lincoln had record players sold as an accessory (add-on).
I heard of that, but I cannot believe how it was possible to keep the needle in the groove on the road...
So if someone approaching that vehicle heard the record skipping they would take that as a DND sign?
There is one in good conditions at the thrift shop I often visit. It seems that no one is interested to that odd thing from the '50. I was thinking to buy it to see how they managed to make it work. I guess that I will find an extremely strong spring on the arm, to put an abnormally high pressure on the stylus. Too bad that I don't have throwaway 45 rpm disks to do a test.
What you want for testing TTs with abnormally high tracking force are the old “12 inch singles” from the 80’s and early 90’s. They were pressed to handle it and still sound good after years of abuse. You could play those on the piezo pickups that would eat regular 7” 45’s for breakfast. That is, if the music that was recorded on them isn’t a total turn-off.
Google. https://www.google.com/search?client=firefox-b-1-d&q=car+record+player
All three of the systems would play on bad roads in good cars. Goldmark knew his dynamics and his 1956 Chrysler. Also tested in a friend's Thunderbird. Demoed it on Chrysler's notorious torture track, and got an order for a few thousand.
Murphy's Law took effect. It got sold into cheap/harsh cars, CBS feared it would undercut the radio industry, only a few boring disks in the special format were issued, gave up in 2 years.
But Ford revived the idea a few years later, using plain 45's in a 12-disk changer. Sold a few. And then 4-track and 8-track killed it.
On another side of the water Philips had their own version, and one survives on YouTube. Shake that thing!
And today: https://www.caranddriver.com/news/a35956430/lexus-is-wax-edition-in-car-turntable/
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When I was out of work I used to run my PC with onboards graphics instead of external card.
Saved about 100 to 150 watts.
PC was on all day so power use mounts up.
Saved about 100 to 150 watts.
PC was on all day so power use mounts up.