Tape Trail

Larry, don't confuse "High Bias"

64.81.54.83

In Reply to: RE: Tape for Otari Deck posted by astrotoy on November 03, 2009 at 23:43:46

with "high output" or "high performance" or high anything else. I think this confusion started with cassettes, where the high performance tapes, CRO2, were also the high bias tapes, so naturally people used the terms interchangeably. But in terms of R2R tapes, there's no direct connection. The correct amount of bias to use is the amount that makes the tape behave best...simple as that. At one time in the development of tape formulations, the amount of bias required went up, culminating in Scotch 250. That tape actually required a level of bias current that some older professional machines couldn't provide, and there was quite a bit of discussion about that in professional circles at the time.

In any case, none of the R2R tapes now made are "high bias." All current RMG formulations, as well as ATR, require a bias current that's comparable with 456.

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