On Aug 3, 6:57*pm, "bw" wrote:
My experience indicates this is not quite true. I generally align all
my old radios and I have found differences in them after they are
aligned. You are right though in that some improve much more than
others but this is for a variety of reasons. *My general experience is
that some have a diferent apparent AGC curve and some have a large
difference in tweeter level.. On some the AGC action on weaker signals
ia less which means weaker signals, although received about as well as
on the other samples, come in at lower volume, and when you increase
the volume to compensate you lose some of the loudness compensation
which makes them sound thinner. I don't know though if this is a unit
to unit of version to version difference as I have only algined a
handful fo these..perhaps 5 or 6. The tweeter level difference is
clearly audible on AM or FM althugh it can somewhat be compensated for
with the treble control.

Jay

Have a link to your alignment procedure?? Equipment??

The SR alignment is typical. For AM alignment you can do it with an RF
Signal generator and a VTVM. If your generator is not terribly
accurate you can use a digital world band radio as a reference to get
the frequencies exact.You first adjsut the 4 IF's to 455 KHz, then
align the oscillator at the top end of the dial for 1630 KHz, the
bottom end for 510 KHz, followed by antenna and RF peaking adjsutments
at 1400 KHZ and 580 KHz.