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Hello - If the recording is monophonic, I choose the channel with highest/ 
clearest sound and mute the other . Unless you're prepared to adjust azimuth 
for each and every cassette, you'll find a "phase shift " issue when you 
combine the tracks for a monophonic final copy unless you process in this 
way.--Mickey Clark
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M.C.Productions Vintage Recordings
    710 Westminster Ave. West
             Penticton BC
                V2A 1K8
http://mcproductions.shawbiz.ca
----- Original Message ----- 
From: "Lou Judson" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, October 28, 2012 1:50 PM
Subject: Re: [ARSCLIST] compact audio cassette questions


> Excellent compendium of cassette lore, Richard!
>
> I'm nearly done with a project of transferring over 120 workshops 
> originated on cassettes, from one to seven C-90s each, from 1979 through 
> the mid 90s. As the speaker travelled around the country and amateurs did 
> most of the recording, they are all over the map in terms of quality! 
> Fortunately it is just spoken word, and the final delivery of MP3s is 
> justified...
>
> I worked with cassettes during all those years myself producing radio 
> interview programs, so I have extensive experience, and all your 
> references are helpful.
>
> I have one question though that has mystified me for years: how does one 
> translate the 3180/120  or /70 specification into frequency response? I am 
> seriously math-challenged, and though I know extremely well how normal and 
> high bias tapes act and sound, how does one translate that spec into a 
> frequency curve? I don't think I have ever seen a direct chart 
> comparison... If there is one on your site i have not seen it yet.
>
> I'm an audio engineer, not an EE, so I can operate them but not design or 
> repair the gear...
>
> Thanks,
> l
> Sent from Lou Judson's iPad 2
> Mobile 415-271-8070
>
>
> On Oct 28, 2012, at 1:14 PM, "Richard L. Hess" <[log in to unmask]> 
> wrote:
>
>> Ahh, the beloved cassette...where do I begin?
>