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#1
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Adjusting play head on Marantz PMD222; need advice
I am copying some 20- to 25-year-old cassettes into a digital form. They are
one-of-a-kind interviews and were recorded in mono on, I think, a Sony TC-142. I want to get the very best sound out of the tapes and have borrowed a Marantz PCM222 "professional" cassette player. The advantage, I hope, of the PCM222 is that it appears to have an adjustable play head. There is a small spring-mounted screw adjacent to the head; I _think_ this is where I match the original tracking by turning the screw till I get the best sound. Am I right in this? Are there some less-than-obvious dangers here I don't know about? (Like turning too far and never getting it right again...) Does anyone have any sage advice for me regarding this matched tracking business and the adjustments on the PCM222? Philip Hiscock philip at mun.ca |
#2
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In article ,
Philip Hiscock wrote: I am copying some 20- to 25-year-old cassettes into a digital form. They are one-of-a-kind interviews and were recorded in mono on, I think, a Sony TC-142. I want to get the very best sound out of the tapes and have borrowed a Marantz PCM222 "professional" cassette player. The advantage, I hope, of the PCM222 is that it appears to have an adjustable play head. There is a small spring-mounted screw adjacent to the head; I _think_ this is where I match the original tracking by turning the screw till I get the best sound. Am I right in this? Are there some less-than-obvious dangers here I don't know about? (Like turning too far and never getting it right again...) Does anyone have any sage advice for me regarding this matched tracking business and the adjustments on the PCM222? As far as I know, all cassette decks allow you to adjust the azimuth this way, and you basically need to do that for any tape transcription work. You will want a scope and a test tape, though, to align it back again after you've finished the job. If you are riding the azimuth by hand, the scope can also be helpful to adjust for each tape, too. Especially mono tapes where you just have a lovely pattern on the display that you can adjust for a flat line. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#3
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Wind and rewind each archive beforehand to liberate any jammed layers.
Was there a NR system in use? Can you match and complement it? Does the pitch of the voices via the newer deck seem natural? *Gently* adjust Marantz spring-loaded screw and *gently* angle it back again, using a 'scope to optimise stereo (twin) tracks' azimuth - failing to have such kit, listen for best hiss /treble when playing back. Cassette tapes, even mono, were notorious for going out of azimuth, especially between takes in some hand-helds. So, even if you easily manage to match the original's verticality on your repro deck, it may need tweaking again after a halt or when rolling a fresh tape or its flip side, or whenever. "Philip Hiscock" wrote in message ... I am copying some 20- to 25-year-old cassettes into a digital form. They are one-of-a-kind interviews and were recorded in mono on, I think, a Sony TC-142. I want to get the very best sound out of the tapes and have borrowed a Marantz PCM222 "professional" cassette player. The advantage, I hope, of the PCM222 is that it appears to have an adjustable play head. There is a small spring-mounted screw adjacent to the head; I _think_ this is where I match the original tracking by turning the screw till I get the best sound. Am I right in this? Are there some less-than-obvious dangers here I don't know about? (Like turning too far and never getting it right again...) Does anyone have any sage advice for me regarding this matched tracking business and the adjustments on the PCM222? Philip Hiscock philip at mun.ca |
#4
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if the tape is recorded in mono and you are making a mono recording, you may want to use stereo playback into a scope for adjusting the azmuth as Scott described, but you may want to use only the L or only the R channel for recording your copy. If you sum the L and R the azmuth setting will be more critical but you will gain 3 dB of signal to noise ratio. So you have to evaluate, is the azmuth and high end rolloff a bigger problem in which case us only L or only R, or is signal to noise ratio a bigger problem in which case you may want to sum the L and R. Mark |
#7
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Philip Hiscock wrote:
I am copying some 20- to 25-year-old cassettes into a digital form. They are one-of-a-kind interviews and were recorded in mono on, I think, a Sony TC-142. OK, first question: how does it sound now, is there any need for trying to tweak the last bit of treble correctness out of the tape? Does anyone have any sage advice for me regarding this matched tracking business and the adjustments on the PCM222? In this context, IF the machine recorded on was near to its ex works adjustment - ie. had not been misaligned by a servicing - and IF the machine you play back on is aligned correctly with respect to a standard test tape, then the need for tweaking - the programme material considered - may be none whatsoever. Also, you have BORROWED a machine, do check that you are at all entitled to touch ANY setting of any kind on it. Adjusting a tape deck that matches somoones drawer full of tapes may not be wise nor popular. Finally, if you need to ask, then you need to learn how to do it. A borrowed machine is not the proper choice for learning to make critical adjustments. My advice to you is to do nothing and to equalize your way out of trouble, if any, digitally. Frequency response on old cassettes seem to be all over the place anyway, and with mono the issue of head alignment is imo not a major one. Philip Hiscock philip at mun.ca Kind regards Peter Larsen -- ******************************************* * My site is at: http://www.muyiovatki.dk * ******************************************* |
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