FROSTWAVE RESONATOR

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"Rare Korg MS20 clone, no longer produced. Bought direct from Frostwave in 2004..."

FROSTWAVE RESONATOR

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Frostwave PVC Scalable Pedal to Voltage Converter

This one in via Brian Comnes.  The following are instructions on how to use the pedal via Paul Perry of Frostwave.  It went for $125 on eBay.

"The instructions for setting up the PVC for other pedals is this: connect expression pedal to box (which turns it on). Set pedal to minimum position. Adjust the blue recessed screw on the front of the PVC where it says 'min' so that the led nearby 'just' lights.

Now set the pedal to maximum & adjust the other blue recessed screw until the 'max' led just comes on. That's it!

The Resonator can run on anything from 14 V AC to 18V AC, it makes no difference. The PVC can run on a 9v DC transformer (centre +ve) or via an internal 9v battery (not supplied).

If you have any questions, contact me directly.

If you want the PVC to sweep both filter inputs at the same time, you can use a 1/4 to two 1/4 splitter plug or cable.

best, paul perry Melbourne Australia""

KORG MS20 VCF Stomp Box

via Mark Milanovich on Facebook

"This is the result of me getting fed up with the prices of the Frostwave Resonators. I didn't need all the features the Resonator had, so I cloned the exact LP filter found in the MS-20. Controls are volume, cutoff, and resonance. I used a dual OTA to achieve this.

This is mainly used in my tabletop synth rig, mainly for my Casio VL-Tone and my Critter and Guitari Pocket Piano."

Frostwave Resonator KORG MS-20 Filter Clone

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"This is a clone of the unique and beautiful sounding filter found in the famous Korg MS-20 analog Synth. The heart and soul of the Korg MS-20 was its filter and here it is inside the Frostwave Resonator.

The Frostwave Resonator itself has now become a classic and is highly sought after. It is no longer made and hasn't been in production for a few years. This amazing filter will only appreciate in value over the coming years.

This will fit perfectly into an analogue synth setup. If you are a guitarist, you can use it as an FX pedal but you'll need to manually sweep the controls or attach a CV pedal to one of the CV inputs to get a lovely analogue sweep.

If you have a modular synth or are just looking to expand your Moog Voyager for instance, this filter will give your synth that unmistakable sound of the Korg. It features 4 CV control inputs at the back as well as the audio input and output jacks. It comes with an Australian power adapter."

Frostwave Resonator MS20 Filter Clone

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"Frostwave Resonator Filter Pedal. Has CV Type Sweep Inputs for both the Low Pass and High Pass Frequency and Resonance. Mono input and Output.

This pedal is based off of the Filter Section in the Korg MS20. Its very sweet sounding and is very versatile... This is well known as the only 'true clone' of the MS20 Filter."

FROSTWAVE RESONATOR - Korg MS-20 synth filter clone

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Original Frostwave Resonator MS20 Filter Clone Prototype

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via the listing: "This is a rare prototype of the already rare Frostwave Resonator. When I first stumbled upon this I decided to contact Paul Perry, the man behind Frostwave, to try and get a little history on my new friend. He confirmed that this particular Resonator was indeed one of a kind. It was so early in production that he had not yet designed a housing for the Resonator, and just ended up using one of the original Funk.a.Duck housings. According to him, all internal wiring on this model is point to point, and with the purist in mind, this prototype is an exact copy of the MS20 filter section, part for part (this means no voltage control, sorry guys). This piece is fully functional, sold as is, with the orignal PSU, also kludged together by Paul Perry.

This is a very rare opportunity, and the closest thing to the MS20 sound without shelling out for an original MS. I've owned both this and the new Resonators, and this thing kills the newer ones. A lot can be said for point to point wiring, especially in high impedance circuit design."

This one in via brian comnes.

Update via Brian in the comments: "Note the linited I/O ports there's only two , the production versions had 4 CV inputs for cutoff and resonance for high and low filters"

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Frostwave Resonator MS20 filter clone

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Cyndustries FROSTWAVE RESONATOR PANEL DIY

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"Cynthia brand Do-it-Yourself Front Panel for Converting a FROSTWAVE RESONATOR in STOMPBOX format...
over to a Modcan A-Series Modular Front Panel. These are fantastic Filters and thanks to Frostwave's clever engineering,
the conversion is quite easy for the beginning DIY solderer.

We're clearing out space for all the new modules and don't do these conversions any more. These are the last ones!"

See Cyndustries on eBay for other modules going up.

Frostwave Resonator MS-20 Filter Clone

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Intellijel Corgasmatron / MS-20 VCF comparison

YouTube Uploaded by s0LVentCIty on Jul 8, 2011

"Hello - my name is Solvent and this is my video comparison of the MS20's legendary VCF and Intellijel's new Corgasmatron eurorack VCF module, which is roughly based on the MS20's VCF. According to Mr Intellijel "Corgasmatron is inspired by the MS-20 but it is a totally different circuit".

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Frostwave Resonator MS-20 Analog Clone Filter

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FROSTWAVE RESONATOR MS-20 Analog Synth Filter Clone

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"Without question, the most famous beloved feature of the classic Korg MS-20 synth is its inimitable filter section - combining a low pass and high pass filter. The Frostwave Resonator replicates this effect in a convenient, portable pedal form. Now out of production, these are becoming more rare and more expensive. Get this now while it's still reasonably priced!

The Frostwave Resonator is a very versatile analog filter. It can take any weedy sample, loop, mix or instrument and give it some fat analog tone or some crunchy lofi grit.

It can create filter sweeps, from subtle to extreme, generate booming sub bass, and take any standard instrument or signal and give it an "analogue" sounding treatment- run a flat drummachine or sound loop via the resonator and you will get big analog drums and samples on the other side....

The Resonator can also self oscillate, creating spacey, atmospheric sounds on it's own without any input source. Combined with other effects some amazing and unique sounds can be generated."

FROSTWAVE RESONATOR - MS-20 Analog Synth Filter Clone

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FROSTWAVE RESONATOR - MS-20 Analog Synth Filter Clone

via this auction

"Without question, the most famous beloved feature of the classic Korg MS-20 synth is its inimitable filter section - combining a low pass and high pass filter. The Frostwave Resonator replicates this effect in a convenient, portable pedal form. Now out of production, these are becoming more rare and more expensive. Get this now while it's still reasonably priced!

The Frostwave Resonator is a very versatile analog filter. It can take any weedy sample, loop, mix or instrument and give it some fat analog tone or some crunchy lofi grit.

It can create filter sweeps, from subtle to extreme, generate booming sub bass, and take any standard instrument or signal and give it an "analogue" sounding treatment- run a flat drummachine or sound loop via the resonator and you will get big analog drums and samples on the other side....

The Resonator can also self oscillate, creating spacey, atmospheric sounds on it's own without any input source. Combined with other effects some amazing and unique sounds can be generated."

The new 2164 Korgasmatron Dual VCF

via Dr. Sketch-n-Etch on Muff's

"I wanted to show off my new MS-20 filter clone. Like the MOTM 420, the Frostwave Resonator, and several others, this filter is based on the later version of the MS-20 filter. However, unlike all the other clones, this one is not a direct (or indirect) copy of the LM13600 OTAs-and-buffers topology of the original. Instead, it is based on the SSM2164 quad VCA chip, and realizes the same transfer function with a VCAs-and-integrators topology. The exponential CV response of the 2164 VCAs obviates the need for exponential converter circuitry. Also, unlike the LM13600-based designs, this filter does not add dc offsets to the signal, and therefore does not require AC coupling capacitors in the signal path.

I've also added a new feature: adjustable limiting voltages in the resonance feedback loops. One problem with the original design (and the clones, I think) is that the resonance amplitude is limited to only 1.8V, and as a result the input signal attenuator has to be set pretty low in order to hear any resonance at all in lowpass mode. My new amplitude control eliminates this problem, and now robust resonance can be obtained without sacrificing signal strength.

Finally, the PCB contains two complete MS-20 style filter circuits, each with all the same features of other popular clones, but with a few additional features as well, including both unipolar and bipolar CV controls, separate three-channel mixer output with optional level control, and optional fine tuning.

A picture of my 4U prototype panel is shown below. This is just one of many panel possibilities, and even this one is missing some of the features available on the PCB for lack of space.

I've also attached some sound clips for your listening pleasure. I'm not much of a production engineer, and all I've got is a little Behringer mixer with no effects and an obsolete version of Cakewalk, so apologies in advance for the crappy sound quality. The last one is my shameless attempt to reproduce the second soundclip on the MOTM 420 webpage with a single filter (the one on the right, if you're curious). This was recorded as a .wav but converted later to an .mp3, so the sound isn't so good, but hopefully the character of the filter still comes through. The other three make use of a triple LFO and my recently redesigned version of Ken Stone's CGS analog shift register, and show some of the formant effects one can achieve with the two Korgasmatron filters in series. However, these only scratch the surface of what this beasty is capable of.

Let me know if you're interested in a handmade PCB."

Elektron Machinedrum Through Frostwave Resonator Samples

via cl516 where you'll find the write-up and one more image.
Simple Machinedrum to Resonator by Calvin Cardioid

QMMG singing

QMMG singing from Peter Speer on Vimeo.

"My long-awaited, long-saved-for QMMG arrived today!! This is the first patch I made with it-- very simple. Filmed for posterity:

Two steady VCOs being fed into QMMG channels 1, 3 and 4.

Channel 1 is the sine out from a Tip Top Z3000.

Channel 3 is the sine out from a uLFO.

Channel 4 is the sine shaped out from the uLFO.

Channel 1 (in LPF mode) is sent to Channel 2 (in HPF mode). I had to sell my beloved Frostwave Resonator to afford this, and I figured the first patch should have some sort of connection to it, hence this arrangement.

Channels 1, 2 and 3 on the QMMG are receiving modulation from both Channel 1 and 2 of Maths.

QMMG Channel 4 is receiving modulation from a Doepfer A-143-1.

The 143-1 is also providing CV for the sine uLFO's shaped wave.

The QMMG is providing all tones beyond the two steady VCO drones.

theshamblers.blogspot.com"

Cassette loop drone (w/ modular)

Cassette loop drone (w/ modular) from Peter Speer on Vimeo.

"The stereo out from the "Cassette loop drone" video

Ring modulator (Frostwave Blue Ringer):
X (Left channel*)
Y (Right channel)
60/40 mix of Y and internal VCO

Ring modulator out

Resonant Band Pass filter (Frostwave Blue Ringer)

Band Pass out

Mixer

*the Left channel from the 4-track is sent to a multiple:
1. to the X in on the ring modulator
2. to an A-119


A-119 Envelope out--> Resonator HP Freq CV in
A-119 Gate out--> A-140


A-140 out to attenuator to Resonator LP Freq CV in

theshamblers.blogspot.com"

Cassette loop drone

Cassette loop drone from Peter Speer on Vimeo.

"I taped together a loop of cassette tape to use with the 4-track as a sort of imperfect looper. It works!

(There is a Boss RV-3 Digital Reverb/Delay pedal on the aux send)

theshamblers.blogspot.com"