[Vintage-Audio] What Did They Really Do?

[Barrie Smith]

Thanks, Sheldon!

Now I know more than I did yesterday.

Barrie


----- Original Message ----- 
From: "Sheldon Daitch" <sdaitch at ibb.gov>
To: "Vintage home and professional audio equipment from 1975 back" 
<vintage-audio at mailman.qth.net>
Sent: Friday, February 25, 2005 12:17 PM
Subject: Re: [Vintage-Audio] What Did They Really Do?


> That coil is actually a spring.  At the input end of the spring is the 
> input
> coil,
> which converts the electrical analog audio to mechanical.  The other end 
> of
> the spring has a similar coil that converts the mechanical motion on the
> spring back into an electronic signal.
>
> Do a Google search on spring reverbs and there is a fair amount of
> material out there.
>
> Inexpensive spring reverb units usually used one set of two springs,
> while higher end units may have used three sets of dual springs, each
> set a different length, for adding fullness to the reverbs.
>
> Another method of achieving reverb, for recording studios and other
> high end sound systems was to use a plate reverb, which used a large
> sheet of metal instead of the spring units.
>
> Sheldon
>
> Barrie Smith wrote:
>
>> I've still got a unit that I never used very much that is called a 
>> "reverb".
>> I opened it up once and it has a giant coil inside that looks as if it 
>> would
>> resonate below VLF.
>>
>> Audio frequency, I suppose.
>>
>> Anyway, one can adjust the reverb, or echo from very short to very long, 
>> and
>> the level of the echo, as well.
>>
>> If you set the reverb to very long, and the volume to very high, you 
>> could
>> make music sound very, very bad.
>>
>> I think it's been sitting on the shelf for over thirty years because I 
>> don't
>> much care for it.
>>
>> BTW, and off-topic, I went to a convention this last week where the 
>> closing
>> night's entertainment was what's left of "Creedence Clearwater". 
>> Actually,
>> pretty darn good for old guys such as I.
>>
>> My wife and I did dance, but not as long as we once did.
>>
>> Barrie
>>
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