AW: [Digital_Hell] DX-7 Noise

[BJ]

Haible Juergen wrote:

> This is just from memory (as so often):
>  I think I remember the headphone amp of the DX-7 was quite noisy,
> but not the normal audio path. You could trim the (compound) DAC
> of the Mk1 DX7 for minimum noise of the D/A conversion, but the
> whole FM algorithm would still produce more noise than the audio
> path (except the HP amp).
> The later models (Mk 2, TX-802 and even the models that combined
> FM and ROMpler) had better DACs, but still suffered from the noisy
> digital implementation.

Well, not the TG77 that i have since 1990, its dead silent!
because it dont work!!..... Oha ha ha ha, this dead silent thing again
dude! :)

Now, really the TG77 are wery silent indeed the thing that makes the
noise in
the TG77 are the reverb,delay DSP IC.So i cant agree onto your statement
about
that the "digital implementation" are noisy.

In my opinion the TG77 are wery clean in its sound.
there is one thing thats make noise and thats the LCD driver oscillator,
wery anoying at least it was, because i have lifted of the coil of the
PCB
and drouvned the whole coil and PCB in silicone, and now its "dead
silent"!

> Yamaha aparently have still put quite some remarkable analogue
> stuff into the DX-7: I still remember my surprise when I found the
> opto electronic VCA for the volume pedal !

Well, thats "wery retro" so to say but
wasn't the DX7 released in 1982 or something?

BJ