MF104 : getting back those high frequencies

The Moog Forum Moogerfooger Forum
1

Hello everyone,

Thanks for having me here. I’m new to this forum but not to Moog. :smiley:

I’ve been spending the last hour trying to find a solutuion to my question here on this forum… So here it is :

I have a MF104 that I love, but I wanted to know if there was any means of not losing most of the high frequencies that are lost when processing a signal ? Any mod, resistor/capacitor to change ? I know there’s a bit less hipass filtering with the “short” mode, but still…

Are all MF104’s equal to that point ?

Thanks a lot fellow Foogerlovers

2

Hi,
welcome,

I don’t have MIDI set-up, but on page 23 of MF-104MSD, they mention that you can extend the analog delay’s capabilities with
what looks like to be some CC numbers. In your case it might be what you are looking for, check it out…

On page 18, they also talk about that anti-alias filter. So… if you change the value of the CC#85, it might have an effect on the
anti-alias filter: Are Moog Music engineers giving us permission to change the cutoff slope of the filter ? Then, maybe you can get
back those high frequencies in the long delay range side ? Try a search on this forum in the box at top…it might already been
answered.

Will try someday, when I get MIDI set-up…very interesting…thank you for that question !

3

I thought I read that CC thing to extend the frequency range is specific to the SD, and not available for the Z or M?

4

BBD analog delays have to kill highs or the noise becomes objectionable. Nature of the beast and why people so embraced digital delays in the 80’s.
you can always run the original dry signal in parallel with it high pass filtered to recover just high end frequencies.

5

Watch this MF-104M video at 12:52:
https://www.youtube.com/watch?v=74S-FgRdtoY
It will explain and demonstrate.

6

Dan, you’re a monster…

Stephen




.

7

Thanks Dan!

8

Thanks everyone for your contributions. I’ll investigate this midi thing.. Especially when it comes to very long delay times…

But then again inside the box, no mod is possible ?

Cheers folks :smiley:

9

Thx Dan. I’d seen that video before. Well done, BTW!

I just thought I’d remembered seeing that CC extension wasn’t available for all the 104’s. Obviously, I was wrong, which is happening more and more with the onset of aging.

10

Hi,

thank you Demon Dan, goes to “Just Me” too… for that alternative solution :bulb:

11

There are no CC’s on ANY MF-104 or MF-104Z or any other non MIDI Moog delay. So if you do not have a MF-104M…

12

Mine is a MF104M. :slight_smile:

13

I use the high freq roloff of the delay as a creative tool. I love to make super bright sounds and turn the delay mix up. It creates a wonderful haze and soft distortion, especially with long notes. The delay is what it is, so work with it rather than trying to change it. So use an eq before and/or after, or open the filter on the synth you are using.

14

You can also use the delay through an aux send in a mixer and feed it back through a normal channel, instead of using the return. Then you can do the feedback using the mixer itself, and put the EQ you wish to the repetitions.

15

Why can’t my own replies to the topic appear on this page ??


EDIT : it’s working now… :question:


So no one ever dared to change any component inside the MF-104M ?


Well thank you all for the suggestions and good tips. Be sure that I’ll try them all !

16

Is it different from using an eq in the external loop?

17

Yes of course.

Not only you get the EQ from the mixer, but an additional color from it. Some of them can push the signal further in the send stage too, and have a preamp in the channel input as well. Besides, you still have the feedback loop to use with the internal feedback

18

Indeed, thanks :slight_smile: