i agreed with david about this UNTIL i got the katsura tuner:
> Using a frequency counter to tune a musical instrument is almost
always
> a really bad idea.
only because it is SO accurate, that you can RELIABLY get 2 oscs so close visually that the beats are negligible.
i still run it off a console send, so i can listen AND watch. but damn, it is seriously rock solid.
dark_november2000 <
jhaible@...> wrote: --- In
yamahacs80@yahoogroups.com, David Rogoff <david@...> wrote:
> Using a frequency counter to tune a musical instrument is almost
always
> a really bad idea.
Well, it was quite helpful, last night.
Only in combination with the MAM tuner, and for the high end of the
frequency range, though.
It's helpful that the required frequencies are printend in the Yamaha
tuning instructions - I guess it'd be a nightmare to tune an
instrument looking into a frequency table.
But here, it worked like a charm. In a range of several kHz, I could
really fine tune to about 2Hz - that's the utmost of resolution I
could get out of the multiturn trimpots. With the MAM tuner (∗when∗
it catched the right note), it was more like 8Hz of resolution.
On the low end (adjusting the offset voltage), in the range of a few
hundred Hz, the frequency counter was of no use, however. The
displayed frequency was wandering too much. But here the MAM tuner
was perfect: It's resolution better than the offset trimpot's (single
turn!) resolution.
So, in one evening, I had my CS-80 tuned well enough for playing
chords that don't sound harsh anymore.
But this is still with the ∗open∗ synth, cards in "up" position.
I did put a towel on top of the card cage (thanks again for the
hint!); now I'm curious how well the tuning will hold when the synth
is closed again.
(I noticed a drift of almost 10Hz at the highest C in 2', from 1 hour
after turn-on to 1.5 hours after turn-on, with the open, towel-clad
synth.)
From what I've experienced so far, the main limit for precise tuning
(other than heat, of course), is the resolution of the trimpots.
Especially considering the awkward position in which I have to adjust
them. :)
JH.
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