424Re: [RedHotJazz] How to play in true mono?
- May 23, 2005on 23/5/05 8:19, Michael Rader at Rader.Michael@... wrote:
> Just a couple of points about Howard's answer:Yes, indeed. I strongly suspected that you knew a lot more about the
> - The mono button to be found on some amplifiers, like a 25 year old+
> amplifier I have in my basement, simply combines both channels, so the noise
> is still there, but may be less obtrusive.
technicalities of this than I did! Yes, the noise is still there, you just
notice it a lot less, at least you do if you are used to playing old
records. It probably still sounds like listening to music in a hail storm to
most "normal" people.
Your next point sounds like an even better commercial for never ever having
an amplifier without a mono button.
>Some CDs are characterised by aHoward Rye, 20 Coppermill Lane, London, England, E17 7HB
> glorious stereo spread of surface noise because whoever transferred the
> original discs played them in stereo.
> - Older amplifiers, like a very cheap Japanese job I had in the 1970s, had
> additionally the option of playing each channel separately, which can make the
> world of difference on a mono recording, since you can switch off the surface
> noise from the noisier channel.
> - Colin Bray told me about a fairly simple device called the audio signal
> director, available from KAB electronics in the USA (www.kabusa.com), which
> costs about $100. With this you can select channels, combine both channels or
> switch channels, i.e. hear what is on the left channel to you right and vice
> versa. I use this for playing mono records and I guess you could also use it
> for CDs. The only problem is that you would probably have to hook it up anew
> each time you switch between analogue records and CDs: I think there's only
> one input and there would be a problem with ouput due to the use of
> preamplification for record players. You could always buy two or make your
> own. The circuitry is probably quite simple, but beyond my own technical
> There is additionally the option of only recording one channel onto a copy of
> the CD (see my other mail).
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