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Tape Trail Reel to reel, cassette and other analogue tape formats. |
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Tape Trail Reel to reel, cassette and other analogue tape formats. |
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In Reply to: Demagnetization of Heads posted by Jazzyguytheone on August 21, 2013 at 12:32:38:
The procedure of demagnetizing the tape path is as follows:
Make sure no magnetic sensitive tape material or i.e. electronics, like CRT screens, speakers, other tape decks etc., are near by.
Make also sure the tape deck is OFF power and that there's access to the full tape path.
Take the wand type defluxer and power it up at a distance of 1,5-2 meter from the tape path.
Approach slowly the defluxer towards the tape path and when getting there, make sure not to actually touch anything in the tape path with the defluxer.
Move the defluxer slowly from left to right over all metal parts in the tape path as slowly as possible.
When the defluxer has passed all metal parts in the tape path, without touching any of them, you just as slowly as before, move the defluxer away from the deck to the position 1,5-2 meters away where you original turned on the power of the defluxer.
Let the defluxer touch a potential magnetic material at that position just before you turn the defluxer off.
This procedure is NOT possible to follow with the cassette shell demagnetizer type. The cassette shell type demagnetizer is way less powerfull, will only have the demagnetizing field above the central tape head and even touch it. It will only be able to operate with the deck OFF power if the deck is one of the "Piano Key" decks. I advise NOT to use cassette shell type demagnetizers at all.
And demagnetizing is not at all needed every few hours. If the head bridge has become permanent magnetized you will often be able to hear extended noise from the tape deck, sometimes even without it playing back a tape. If you did a demagnetizing with a "wrong" procedure, if magnetic tools have been touching the parts or if any other stuff has magnetized the tape path / head bridge, demagnetizing will be needed. You can have a deck playing and recording for decades without the need of demagnetizing.
It's correct that if the wand type has an intact rubber/plastic hood there's not any risk at touching the parts.
But some wand types has an on/off button on the device and that's not a very smart thing.
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Follow Ups
- RE: Demagnetization of Heads - niklasthedolphin 04:39:17 11/19/15 (0)
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