No, I was just looking at a scope with spoken-word material on the top and bottom track. They were
also recordings from transcription records, so there was quite a bit of record noise. I was
surprised how many times there would be a loud sound at the same time for both tracks, often enough
to verify that azimuth wasn't way off. This is inexact, to say the least, but everything sounded
The whole 4 tracks at once thing gets into craft vs. science.
-- Tom Fine
----- Original Message -----
From: "Ellis Burman" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, March 10, 2015 3:18 PM
Subject: Re: [ARSCLIST] Tape dubbing backwards?
> Hi Tom. If is was a 4-track mono tape, how did you check the azimuth? Was
> there phase coherent tones or pink noise on all four tracks? That seems
> highly unlikely to me.
> Ellis Burman
> On Tue, Mar 10, 2015 at 8:59 AM, Tom Fine <[log in to unmask]>
>> I've never tried doing all four tracks of a quarter-track stereo of
>> high-fidelity music all at once using my Tascam 44-OB, but I have had no
>> problems doing some OTR (4-track mono) tapes. The quality going in sucked,
>> so the client was very happy to save money not paying for 4 passes across
>> the heads. I was actually surprised at how good it did sound. He told me
>> his dubs were second-generation from transfers of transcriptions (so either
>> 3rd or 4th generation from the transmission line). He had been smart enough
>> to use a good quality deck (I forgot he told me it was Pioneer or Teac,
>> later-generation so with direct drive capstan and decent azimuth
>> stability). On my scope, the azimuth looked OK between tracks 1 and 4, so I
>> figured I was probably getting pretty good fidelity out of all 4 tracks,
>> especially considering the relatively lo-fi source. His smartest moves in
>> making the tapes were doing them at 7.5IPS and using well-slit Maxell UD
>> tape. We also transferred at double speed (7.5IPS of 3.75IPS material), and
>> again this did not effect the sound quality of OTR source material very
>> negatively. The guy got 4 hours of transfer material for every half hour of
>> tape machine on the clock time. As I said up front, I would never do this
>> for high-fidelity musical recordings.
>> -- Tom Fine
>> ----- Original Message ----- From: "Richard L. Hess" <
>> [log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Tuesday, March 10, 2015 11:49 AM
>> Subject: Re: [ARSCLIST] Tape dubbing backwards?
>> Some of the four-track in-line heads cheated down a little from the
>>> standard 43 mil track width, but I think it was down to 38 mils to allow
>>> for better crosstalk. This is not well documented...but then again we have
>>> a variation of at least 75-82 mils in "NAB" two track heads. At this point,
>>> if one is dealing with more than three tracks on 1/4-inch tapes there are
>>> usually larger issues than this.
>>> On 2015-03-09 9:09 PM, Dave Radlauer wrote:
>>>> Careful there, I don't think there's a one to one relation between
>>>> and 1/4 track formats, but I'm sure more knowledgeable voices will chime
>>>> Dave R
>>> Richard L. Hess email: [log in to unmask]
>>> Aurora, Ontario, Canada 647 479 2800
>>> Quality tape transfers -- even from hard-to-play tapes.
> [log in to unmask]