[HAM] Q's on B3's vintage 56-57

[Bob Scarborough]

At 01:32 PM 7/22/2000 -0700, you wrote:
>What type amp and preamp does it have?<snip>

AO-28-1, like all of 'em.

>Any electronic difference between earlier B3's and later models?
>Sound characteristics different for later models?<snip>

In 1964, Hammond made the move to mylar capacitors.  Wax/paper capacitors
are not stable over time and cause several different problems, some
affecting tonality.  The '64 Hammonds are rare (bad sales year, the e-org
manufacturers were really in high gear then with new solid state madels),
and had a unique generator filter layout, given them a unique sound.  Later
Hammonds used a different, "cleaner" filter setup.

Minor circuit changes were made in the AO-28 over the years, none really
affecting tonality more than the change to better caps in '64.  There is,
of course, no power amp in any Hammonds other than the A-100s, the D-100s,
and the "schpinettes", as I laughingly call the M- and L-series.

You need to go to http://theatreorgans.com/hammond and do some reading.

DeserTBoB
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