[Mike Rivers]

On Jul 14, 12:12 pm, wrote:

This reminds me of something I forgot to mention: When punching in,
there is an approximately 250 ms drop out, though, upon play back, the
punch is as tight as I could ask for. Punching out is basically the
opposite.

There has to be a ramp-up and ramp-down of the bias and erase current
so you don't record a click. I suspect that the time that you're
hearing is inherent in the machine's design. You may be able to modify
the timing of the control circuitry by changing a capacitor value to
speed that up. There was a modification like that for the Ampex
MM-1100 that I used to have.

I ran two tests; one of steady tones and one of a bass player bussed
to all the tracks. Punching in from one tone to the next, seemed OK -
just a slight crossfade effect. Punching in on the bass playing
sounded like music - I was able to punch in between the notes as
desired.

Sounds to me like it's working normally. Best policy is to make your
punches in places where they'll be audible.

I was asking what parts inside the machine might I look at first as
requiring adjustment or replacement. I not a proper tech, but I'd at
least like to narrow it down a bit before I get one in here.

You'd need a proper tech. I don't think there's anything defective,
but if your tech can locate the record timing circuitry he may be able
to speed that up by changing the value of a capacitor or resistor.

I have a Mackie HDR24/96 that does some housekeeping every time a
channel comes out of record. If you do a 24-track "rolling" punch-out,
unless it's a very short recording, there's quite a noticeable delay
before the original track starts playing again. But the acutal punch
is as accurate as your finger was on the button. Now THAT'S something
that takes getting used to. But I just have learned how to avoid it
most of the time and it doesn't bother anybody. There sure was a lot
of fussing about it when the machine first came out, though. Everybody
was concocting unrealistic demonstrations to show how bad it was.