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Importance of warm up. I hope this helps someone

I was checking a cassette I had made last month back to the original CD source for comparison. All my equipment had been on for 4-5 hours except CD player. I cued both up and the CD player was overly clear (bright) compared to the cassette made from the same source a month earlier. I thought well since this is a cassette I should expect some roll off in the highs after a period of time but not so soon. OK everybody. Im a cassette fan. I grew up with it and I know other mediums maybe are better. OK back to the warmup. I decided to let CD player warm up for 30 mins. I compared again and cassette was a perfect copy of the CD!!!. I can only figure the CD player was not warmed up. Everything else stayed ther same and was constant. I pay more attention to warmup now. I know it was important but I did not see how much until today.
blueranger

Showing 1 response by spiro

spiro
115 posts
 
I have met many people who claim that the system is without warm up necessity. I have not found this ever.
I've not had mega bucks systems, but in the 10-12 brands I have owned, they all took 20 mins to 2 hrs to warm up, *from constant on condition*. So this is not a power up, this is a signal up if you will.
Some gear like Spectral and Mitner have shown 24 hour power up in my experience. The Spectrals will actually get louder in power up.
But I'm glad to see that Warm up is being recognized.
It's a real pain, because if you take it to the enth degree you have to record a warm up copy before you record the final copy so that all circuits get that time.
I don't go that far, but it is where the theory goes isn't it?
Best Regards all.
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