Memorymoog Headphones and Filter trick (... ?!)

[gostini]

Hi! I'm new here, my name is Gianluca'gostini, i write from Italy and this forum is fantastic!
This is the first time I post something, and I do becouse in the topic What synth has impressed you recently? Siem, tolking about a Memory Moog sayd;

Originally Posted by Siem

Put the headphones output into the filter input, an old MiniMoog trick,

Is there someone, maybe Siem, who can explain to me the effects of this "esoteric" thing?
I hope the question is not too stupid, many thanks to anyone who will answer!
'gostini

[alexp]

First off welcome!!!

Its not too stupid at all! It fattens up the sound. With my Model D, I just put the low out, into the ext input on the mini and it really does give it a fat sound! Hope that helps!


alexP

[clusterchord]

it creates a feedback loop, and in effect overloads the filter input, bcs youre sending synth's outpus back into its filter input. so i wouldnt call it fattening, just dyrtying up, which is great too. but not all the time.


ive done it on mini, and on SH-2 and MS-20 too.




tho i didnt know MM had filter input. if it does, which one of the six filters does it use for this?

[gostini]

Thank you for the answers!
It seems that with "Filter In", in Moog Synths, it means an "Insert" for external effects, am I wrong?
I tried this trick with the Filter CV In of my Pro One, and it doesn't work.
Maybe that, for creating a feedback loop with the P1, I've got to use a stereo jack splitted in two mono jacks, one for the normal output and the other for the "audio in"..
I'll try and will make you know if ma house exploded

[Heathfinnie]

Filter CV in is to modulate the cutoff with a voltage signal like a pedal. It's not an audio input into the filter.

[Derp]

This trick can also work with modulars and semimodulars. The Kraftzwerg even has this routing on the second filter input by default.

[goldphinga]

The memorymoog doesnt have a filter input.

[bleepbleep]

Originally Posted by gostini

I tried this trick with the Filter CV In of my Pro One, and it doesn't work.

the Pro 1 has a filter input - EXternal Input - use this for the same kind of feedback trick

[gostini]

Originally Posted by goldphinga

The memorymoog doesnt have a filter input.

uh! i really don't know, i never had a memorymoog!
The only thing i'm sure of is that the P1 has a filter cv in for voltag control of the filter, just like Heathfinnie sayd.

Now, from the post of Siem I just presumed that th filter in of moog synthesizers work different form the P1..

Boh!

What I'm going to do now is to use the audio in of the P1 to make it explode... 5 minutes and you'll know...

[gostini]

ok, done.

I used a "insert" cable, so I went out from the P1 with a stereo jack, splitted in two mono jacks: one on mixer input, the other into the P1 audio in.

effect: crazy... something between a broken arpeggiator and an arp 2600 sample/hold effect.

very strange.
i just expected some dirthy sound... not this... if someone will ask me i will put online a sample...

love and peace

[Derp]

Originally Posted by gostini

i just expected some dirthy sound... not this... if someone will ask me i will put online a sample...

You expected us not to ask? Of course we want to hear this little creation of yours!!! ...please?

[gostini]

ok, here it is

It's not exactly like a borken arpeggiator... but lissen, the only thing i touched during this "session" is the "external imput" knob. I'm not using LFO, pitch or changing note... only two detuned ramps (and than what..?) and the cut off sometimes open sometimes closed... but never touched during the same note... i hope my english is understandable...

p.s. put your volume a little bit down, becouse you want to preserve your ears and this mp3 is a little bit killer... ah, obviusly the meter in Pro Tools never met the "red light"... the distortion is all internal in the P1.

[roginator]

it has filter input ONLY if its upgraded to LAMM HARDWARE UPGRADES



FILTER INPUT: External audio signals can be fed through the Memorymoog's VCF and VCA circuitry (including envelopes and LFO) with the FILTER Input board, the input jack for which is located on the Memorymoog's expansion slot next to the stereo output jacks.

[Siem]

Originally Posted by goldphinga

The memorymoog doesnt have a filter input.

Yes it's a LAMM (Lintronics Advanced Memorymoog Modification): the electronics parts were stabilized some features were added to the menus and it has VCF in and Stereo Out plus I can record all knobs on the Moog via MIDI. I'd recommend it, since I bought it as a LAMM, I haven't used a stock MemoryMoog so I can't compare the two.
Sending the output back into the VCF port will overdrive the internal mixer (I've got the headphone knob at about 75%), the sound will become fatter, it doesn't affect the filter frequency. You can do the same with other analogue synths.

[gostini]

Originally Posted by roginator

i
FILTER INPUT: External audio signals can be fed through the Memorymoog's VCF and VCA circuitry (including envelopes and LFO) with the FILTER Input board, the input jack for which is located on the Memorymoog's expansion slot next to the stereo output jacks.

So, it's the same thing as the audio in in the pro one... ..?

[Siem]

Originally Posted by gostini

So, it's the same thing as the audio in in the pro one... ..?

Yes, you need to split the audio out, so one part will go to your mixer and the other part to 'audio in' or something like that.
You can control the amount of audio going back in by changing the noise/ext knob if I recall correct.
I haven't tried it with the Pro-One yet. A variation would be to put an EQ before the input so you can control which frequencies go back in.

[gostini]

Originally Posted by Siem

Yes, you need to split the audio out, so one part will go to your mixer and the other part to 'audio in' or something like that.
You can control the amount of audio going back in by changing the noise/ext knob if I recall correct.
I haven't tried it with the Pro-One yet. A variation would be to put an EQ before the input so you can control which frequencies go back in.

I did. The Pro One is mono, but has as stereo out, and splitting is easy with a stereo jack. 5 posts above there is an mp3 of what i obtained doing this

[Derp]

Originally Posted by gostini

ok, here it is

YESSS!!!!!

That demo is just epic. Love it!

[gostini]

Originally Posted by Derp

YESSS!!!!!

That demo is just epic. Love it!

ahahahahah!

Yes, I sould define it epic...

But... WHY? I mean, why does the sound pitch is so heavily modulated by a feedback loop? Is it random frequencies going in resonance, autooscillating?

[goldphinga]

Originally Posted by Siem

Yes it's a LAMM (Lintronics Advanced Memorymoog Modification): the electronics parts were stabilized some features were added to the menus and it has VCF in and Stereo Out plus I can record all knobs on the Moog via MIDI. I'd recommend it, since I bought it as a LAMM, I haven't used a stock MemoryMoog so I can't compare the two.
Sending the output back into the VCF port will overdrive the internal mixer (I've got the headphone knob at about 75%), the sound will become fatter, it doesn't affect the filter frequency. You can do the same with other analogue synths.

Yep i know about the LAMM upgrade. Its bloomin pricey tho. Youre lucky you picked up a lamm'ed one.

My MM+ luckily is very stable tuning wise..it just needs to be played regularly to keep it happy which of course im not averse to!

[gostini]

Originally Posted by gostini

But... WHY? I mean, why does the sound pitch is so heavily modulated by a feedback loop? Is it random frequencies going in resonance, autooscillating?

Ok. I can say something VERY epic. Today a tried a Minimoog.

eh eh eh eh eh eh eh eh eh eh eh eh eh eh

....

eh eh eh eh ehe....

eh...



OK. Stop being happy!

....

no, I can't.

Anyway, I tried the trick of the low output in the ext. input with th mm, and I realized that, with the gain at the maximum level it happens the same that haapens with the Pro One. So i looked for the right level to avoid random cacofonic modulations, I than I found my personal Nirvana in "saturated" minimoog sound.

This becouse i didnt know about this trick in the P1 but always konwn about the minimoog, so I just did it an it worked.


...ok, nothing special... just to share...

[Siem]

Originally Posted by gostini

Ok. I can say something VERY epic. Today a tried a Minimoog.

eh eh eh eh eh eh eh eh eh eh eh eh eh eh

....

eh eh eh eh ehe....

eh...



OK. Stop being happy!

....

no, I can't.

Anyway, I tried the trick of the low output in the ext. input with th mm, and I realized that, with the gain at the maximum level it happens the same that haapens with the Pro One. So i looked for the right level to avoid random cacofonic modulations, I than I found my personal Nirvana in "saturated" minimoog sound.

This becouse i didnt know about this trick in the P1 but always konwn about the minimoog, so I just did it an it worked.


...ok, nothing special... just to share...

Hahaha good! I love it how that little light goes on when the MiniMoog gets its shot of analogue goodness pumped back in.

[gostini]

Originally Posted by Siem

Hahaha good! I love it how that little light goes on when the MiniMoog gets its shot of analogue goodness pumped back in.

The light is broken

...
...
...

But I'm happy anyway

P.S. Ah! Does anyoen ever heard a Pro One and a MiniMoog sounding in unison with the minimoog filter?
Me yes :D