Doepfer A-137-1 Wave Multiplier I

Wave MultiplierA-137 is a voltage-controlled wave form multiplier (wave multiplier). The fundamental idea of ​​a wave multiplier is the multiplication of the waveform of an incoming audio signal (eg triangle / sine / sawtooth of a VCO) within a period. This produces additional harmonics (harmonics) in the audio signal. The duration of the period and therefore the pitch of the signal remain unchanged, as opposed to a frequency multiplication such as the PLL module A-196.

The A-137 operates as a kind of "inverse low-pass filter", so it adds a harmonic signal. Additional harmonics are added, where a low-pass filter (eg A-120) filters out overtones from an overtone-rich signal. Therefore the best results are obtained with the A-137 in combination with comparatively low tone waveforms (eg triangle, sine) as input signal. The A-137 can also be used for high-frequency input signals (eg sawtooth), but the effect is not as spectacular as with a triangle signal.

The A-137 is a very highly developed waveform multiplier that allows much more features, interferences, and waveform manipulations than other similar models. In addition, all parameters are manually adjustable and additionally voltage-controlled. Here you can see the most important features of the module: The multiples parameter (manually and adjustable by control voltage) defines the number of waveform multiplications within a period. The two parameters Folding Level and Symmetry (both manually and adjustable by control voltage) set the upper and lower levels at which the convolution of the signal (ie the "flipping" of the wave) takes place. The diagram below shows the function of these two parameters. The Harmonics parameter (manually and adjustable by control voltage) adds additional harmonics ( in addition to the harmonics resulting from the waveform multiplication) by sharpening the waveform edges (gain and limiter) and adding overshoot peaks (attenuated waves to the edges).

Controls:

  • Input Level (to adjust different input levels for the optimal effect of the module)
  • Multiples (number of curve multiplication, manual setting)
  • Harmonics (adding additional harmonics with an effect similar to that of the resonance in filters, manual setting))
  • Folding Level (value of the upper and lower convolution level, for explanation see the sketch below, manual setting)
  • Symmetry (symmetry of upper and lower convolution level, for explanation see the sketch below, manual setting)
  • Audio In (also suitable for control voltages!)
  • Multiples CV In (control voltage input for the number of curve multiplications, with attenuator)
  • Harmonics CV In (control input for Harmonics parameter, with attenuator)
  • Folding Level CV In (control voltage input for the convolution level, with attenuator))
  • Symmetry CV In (control voltage input for the convolution symmetry, with attenuator))
  • Audio Out (output for the processed audio or control signal)

These are other customers' choices:

Customers who looked at this item have bought these:

Doepfer A-137-1 Wave Multiplier I
89% bought this exact product
Doepfer A-137-1 Wave Multiplier I
Available immediately
Available immediately

This item is in stock and can be dispatched immediately.

Standard Delivery Times
118 € Add to Cart
Doepfer A-136
5% bought Doepfer A-136 63 €
Doepfer A-116
4% bought Doepfer A-116 68 €
Our most popular Waveshaper, Distortion Modules
13 customer ratings:
  • 5
  • 4
  • 3
  • 2
  • 1
4.8 / 5.0
  • handling
  • features
  • sound
  • quality
5 written ratings Read all reviews
Total

Very versatile wavefolder!

Grent, 20.06.2013
Everyone needs a wavefolder. It took me some time to properly grasp this module, but now it makes it's way into almost every patch I make. You can get a huge range of sounds! It's best fed with a triangle or sine as the wave folding circuit adds lots of harmonics to the signal. Adding some slow modulations to the "symmetry" and "harmonics" inputs can create an ever changing sound that never sounds the same twice!

A great tip I learned with this is to keep the input level down low, it is easy to overdrive, and by doing that you may miss the subtle morphing waveshapes that this module excels so well at.

A small issue I have with this is the depth, it's a little bit deeper than most modules so it may have trouble fitting in a shallow case. (No problem using any of Doepfer's excellent racks though!)

I don't think there is another wavefolder that sounds like this. One of Mr Doepfers most unique creations.
Helpful · Not helpful · Report review
Report rating…

Do you believe this rating to be inaccurate or unacceptable for some reason?

Send report
Show variations of this product
Doepfer A-137-1 Wave Multiplier I
(13)
Doepfer A-137-1 Wave Multiplier I
to the product
118 €

Wave MultiplierA-137 is a voltage-controlled wave form multiplier (wave multiplier). The fundamental idea of ​​a wave multiplier is the multiplication of the waveform of an incoming audio signal...

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-124 Wasp Filter SE
(34)
Doepfer A-124 Wasp Filter SE

Wasp Filter Special edition, Special 12 dB multimode filter, Circuit technology of the "EDP Wasp", Black front, Yellow pot caps, Width: 8 HP, Depth: 45 mm, Power requirements: +30 mA (+12 V)/-10 mA...

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-110-1
(62)
Doepfer A-110-1
to the product
138 €

Standard VCO for Modular System A-100Module A-110-1 (VCO) is a voltage controlled oscillator. The A-110-1 produces frequencies in a range of about 8 octaves, of which four waveforms are available...

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-138s Mini Stereo Mixer
(7)
Doepfer A-138s Mini Stereo Mixer

Mini Stereo Mixer 4-in-2 mix module in Eurorack format, Four inputs with attenuator and pan control, plus two 3.5 mm mini jack outputs, Width: 8 HP, Depth: 30 mm, Power requirements: +10 mA (+12 V)...

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-160-2 Clock Divider II
(12)
Doepfer A-160-2 Clock Divider II

Frequency divider For clock/trigger/gate signals, Width: 4 TE/ 4 HP / 20 mm

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-100 LC1 Low Cost Case
(5)
Doepfer A-100 LC1 Low Cost Case
to the product
118 €

Case for Eurorack Modules Integrated power supply A-100SSB: +12 V / 380 mA, -12 V / 380 mA, To 48 TE shortened A-100LC3 version, Built-in bus board with 8 module slots, Casing made of raw wood -...

  • Module: No
  • Empty Rack, Or Housing: Yes
  • Basic System: No
  • Accessories: No
Doepfer A-180-2 Multiples
(60)
Doepfer A-180-2 Multiples

Passive Multi-Port Distributor 8x Interconnected jacks, Sockets are divided into 2x quadruple groups; but can also be modified to an eight-multiple (soldering bridge on the circuit board), Width:...

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-180-3 Dual Buffered Multiple
(11)
Doepfer A-180-3 Dual Buffered Multiple

Synthesizer module Double buffered 1-in-3 multiple, For buffering and duplication of CV and audio signals, Width: 4 TE / 4HP / 20.0 mm

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-119
(37)
Doepfer A-119

External Input / Envelope FollowerModule A-119 is used to integrate external audio signals into the system A-100, and includes the components pre-amplifiers, envelope follower and a comparator. The...

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-132-3
(23)
Doepfer A-132-3

VCA Switchable characteristic between linear and exponential, Audio and CV signals can thus be optimally processed, Width: 8 HP, Depth: 50 mm, Power requirements: +30 mA (+12 V)/-30 mA (-12 V)

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-140
(55)
Doepfer A-140

ADSR Envelope Generator The module A-140 is a envelope generator and since it delivers control voltages, belongs to the modulation-modules. As soon as the ADSR is triggered at gate-input, it...

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
Doepfer A-138b
(52)
Doepfer A-138b

Mixer with Logarithmic Potentiometers Primarily suitable for audio signals, Width: 8 HP, Depth: 35 mm, Power requirements: +10 mA (+12 V) / -10 mA (-12 V)

  • Module: Yes
  • Empty Rack, Or Housing: No
  • Basic System: No
  • Accessories: No
118 €
Free shipping incl. VAT
Available immediately
Available immediately

This item is in stock and can be dispatched immediately.

Standard Delivery Times
Share this product
Your Contacts
Phone: +49-9546-9223-30
FAX: +49-9546-922328
Offers include 21% Belgium VAT and are valid as long as stocks last. Shipping costs to Belgium are 2,50 EUR, free shipping on orders above 49 EUR. Please click here for international Shipping rates. We do not accept liability for typographical errors or inaccurate information of any kind. *RRP = manufacturer's / distributor's recommended retail price in Germany
Harley Benton Fusion-HSH Roasted Maple Slate Digital ML-2 DPA 4066-OC-A-F10-LH Slate Digital ML-1 IK Multimedia UNO Synth JHS Pedals The Bonsai Hercules Stands HCGS-414B+ Guitar Stand Zynaptiq Intensity Clavia Nord Music Stand V2 Tech 21 DP-3X Solar Guitars S2.6C K&M 17650 Guitar Stand
Recommended
Harley Benton Fusion-HSH Roasted Maple

Electric Guitar Ergonomically shaped mahogany body, "Ultra Flame" flamed maple veneer top, Matching headstock, Bolt-on neck from "roasted" Canadian flamed maple, "Roasted" maple fretboard, Neck shape: Modern C, Clay Dot fretboard inlays, 24 Medium jumbo stainless steel frets, Nu-Bone...

to the product
399 €
(2)
Recommended
Slate Digital ML-2

Small Diaphragm Condenser Microphone For Slate Digital VRS8 Thunderbolt audio interface, similar linear and flat frequency response to the Slate Digital ML-1, Allows microphone placement that is difficult or impossible for a larger microphone, Side mounted pad switch -...

to the product
159 €
Recommended
DPA 4066-OC-A-F10-LH

DPA 4066-OC-A-F10-LH, d:fine CORE 4066 Omni Headset Mic, professional headset microphone with removable and adjustable neck holder for left or right-sided use. Omnidirectional, 20Hz-20kHz with 3dB boost between 8-20kHz, 144dB SPL max.,TA-4F Switchcraft connector for Shure Transmitter . beige, Great...

to the product
719 €
Recommended
Slate Digital ML-1

Large-diaphragm condenser microphone Neutral ML-1 condenser microphone that can be combined with VMS hardware and software, Optional Neutral VMS preamp ensures minimal sound-colouration (not included!), Via VMS plug-in software, you can completely change the sound characteristics even after recording,...

to the product
849 €
Recommended
IK Multimedia UNO Synth

Monophonic analog synthesizer with step sequencer, arpeggiator and effects section Classic setup with 2 VCOs and noise generator, multimode filters, amps, 2 envelopes and LFO, Waveform VCOs Triangle, sawtooth and variable pulse width rectangle, Multimode filter with 12 dB...

to the product
229 €
(1)
Recommended
JHS Pedals The Bonsai

Effect Pedal Overdrive, 9 Tube Screamer Overdrive modes, 5 Classic TS circuits and 2 popular mods, Analogue operation, True bypass, Volume, sustain and tone controls, 9-Way rotary control to select between Tube Screamer modes (OD-1 / TS-808 / TS-9...

to the product
259 €
Recommended
Hercules Stands HCGS-414B+ Guitar Stand

Hercules Stands HCGS-414B +, AGS PLUS Guitar Floor Stand for All Electric Guitars / Electric Basses / Acoustic Guitars/Mandolinen/Banjos and Ukulelne, Auto Grab Holder automatically secures the instrument from falling out, (for standard widths of 40-52 mm) with improved foam...

to the product
44 €
Recommended
Zynaptiq Intensity

Zynaptiq Intensity (ESD); enhancer plugin; innovative algorithm increases detail, clarity, density and loudness of any audio signal; suitable for single tracks, groups, mixbus or mastering; easy to us clearly arranged user interface; additional soft-knee saturating limiter at the output stage;...

to the product
148 €
Recommended
Clavia Nord Music Stand V2

Clavia Nord Music Stand V2 - music stand for Nord C2 Combo Organ, Nord C2D, Nord Electro 3 HP, Nord Electro 4 HP, Nord Electro 5 HP, Nord Electro 6, Nord Piano 88, Nord Piano 2 HA88, Nord Piano 2...

to the product
69 €
Recommended
Tech 21 DP-3X

Preamp for bass dUg Pinnick signature model, Controls: volume, chunk, high, mid, low, comp, drive, Gain switch, Mix button, Chromatic tuner, XLR DI output, TRS input / output, Headphone output, Dimensions (W x D x H): 19.7 x 6.4...

to the product
299 €
(1)
Recommended
Solar Guitars S2.6C

Electric Guitar Body: Mahogany, Neck: Maple, Fretboard: Ebony, Neck profile: C, 24 Super jumbo frets, Graphite nut, Nut width: 43 mm, Scale: 647 mm, Pickups: 2 Duncan Solar humbuckers, Grover 18:1 locking machine heads, Colour: Carbon matte

to the product
699 €
(2)
Recommended
K&M 17650 Guitar Stand

Guitar Stand - Carlos Tall A-frame design, Can be folded flat, Support arms include protective felt pads, Suitable for guitars with nitrocellulose lacquer finishes, Neck lock (Security Lock), Colour: Black, Support depth: 125 mm, Dimensions: 410 x 515 mm,...

to the product
69 €
Feedback Found an error or want to give us feedback about this page?

We're looking forward to hearing from you and aim to solve any problems as soon as we can.

Please leave a comment. Please enter your e-mail address.