Please dont hate me

  • Thread starter Thread starter boogle
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boogle

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I am young I will admit analog is some what uncharted terrain for me. I got an old Ampex 440B and it was in kind of rough condition. I have replaced the caps on the cards and cleaned it (a lot). I am having problems getting it calibrated though. I do not have overly sufficient test equipment, just a tone generator. I am generating a 1k tone at 0db out of my analog board. I have adjusted the azimuth and zenith by eye best I can. The 1k tone goes to tape a zero according to the meter and plays back at 1k. When I record a 10k signal it plays back at zero, but when I record 100 Hz signal it plays back at -4, even with the calibration maxed.

I also am trying to calibrate the bias and understand that you want to over bias, but with a 10k signal even at 0db, with the bias calibration maxed the meter is still not coming back down.

I am basing my information off of what I have read and have tried to get the best understanding of it I can.

Anyone who can help me it would be much appreciated.
 
boogle said:
Did I put something down wrong?
Click to expand...

Does the meter waver when playing back 1K or 10K or is it rock steady?

If the needle is rocking back and forth then you have a problem with the heads.
 
You have to start the process with a calibration tape from MRL, BASF or TEAC. The MRL are easiest to find, as they are still sold new.

http://home.flash.net/~mrltapes/

What kind of blank tape are you using? That could have something to do with your bias issues.

How are you adjusting the bias? I mean how are you providing the 10k tone?
 
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