Re: DL4 problem

[Tom Heasley <heasley@hypnos.com>]

At 09:22 PM 3/21/02, you wrote:
> Hi Tom-
> I'm perplexed about this buzzing
> problem.

Thanks for the post, Hans.  I'm still quite perplexed as
well.

>  Did you use the
> same power supply with both DL4's?

It didn't matter which of these I used.

>   It sounds like
> you've tried just about everything else.  The only other thing that
> I can think of, is that maybe you've got a feedback loop going somehow -
> that will cause a high-pitched tone, although it doesn't seem a likely
> culprit.  If you have a barrel connector, try connecting the send
> straight back to the return, and see what
> happens.

Don't have one, but I'll give that a try too - meanwhile, I had my first
performance in SF last night in quite some time, so this was really...a
problem...ended up using only the D-2 and the MPX1 and got through the
performance just fine.  Had a great time, actually - just no
looping, per se!  Good to know that I'm not as entirely dependent on
the loops as I thought!  - 'course the delays were real
long...

Thanks too for the EDP tips.  I almost used it last
night...

See ya,

Tom

 

> Regarding overloading
> your EDP: I used to have that problem a lot, especially with
> low-frequency signals.  Then I realized that the EDP simply doesn't
> have as much headroom as the Mackie, so I did two things:  (1). I
> turned all of my levels down, so that I was no longer peaking out at
> +10dB, but rather at unity if possible.  (2) I turned the EDP's
> input down a little and then boosted its return channel into the Mackie a
> little bit to compensate.  This won't do wonders for your
> signal-to-noise ratio, but neither will clipping.
>  
> When the red light goes on, things do tend to get
> ugly.  You can hit UNDO as soon as you get distortion to keep the
> crunch from looping, and then back off the feedback a little bit to let
> the levels settle down to a manageable level.  With your tuba, I'm
> sure that you must get big pileups of waveforms, which are maxing out the
> looped signal.  I believe that the EDP software automatically cuts
> the looped signal somewhat whenever you overdub, but it may not be enough
> when we're talking about Big Bass Waves.  You may need to keep the
> feedback rolled off a hare to keep things under control when you're
> overdubbing a lot of low notes.  If you're using a MIDI pedal to
> control the EDP, you could theoretically assign two pedals to the overdub
> function:  one regular for higher notes, and a second one that
> lowers the feedback while it's pressed down for the brown-tone
> drones.
> Good luck,
> -Hans