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The PH-4 is a LFO module with four outputs that are offset in phase 90° each. Unlike normal quadrature LFOs it generates not only a sine waves but also triangles.
We currently do not accept pre-orders for Cwejman products. If you are interested in this module, please use the availability notification. The number of Cwejman circuits is limited. Therefore, we recommend you to order online IMMEDIATELY when a module becomes available. Enquiries via e-mail or telephone are usually not fast enough. (More detailed information can be found on the product page.)
The internal LFO can generate a sine or a triangle wave, the selection is done with a small switch. The modulation generator's frequency can be set manually (40s-6ms cycle length) and has voltage control, too
Level-CV is used for simultaneous modulation of all outputs' levels, e.g. in order to fade the LFOs in and out.
The voltage controlled offset function adds an offset voltage to all outputs i.e. they do not oscillate aorund 0V but above or below.
The eight LEDs indicate, rate, phase and waveform at once, barbershop-pole-style.
All Cwejman modules are screened against interferences, protected against reverse polarity and contain calibration options on the backside. (See photograph.)
Attention: Unlike other manufacturers, the red stripe of Cwejman's flat ribbon cable indicates the positive +12 V rail, not the negative one!
englische Bedienungsanleitung (pdf);http://www.cwejman.net/ph-4.pdf; Sound On Sound 02-2007/Gordon Reid;http://www.soundonsound.com/sos/feb07/articles/cwejman.htm; Sound On Sound 01-2007/Gordon Reid ;http://www.soundonsound.com/sos/jan07/articles/cwejman2.htm; Sound On Sound 12-2006/Gordon Reid;http://www.soundonsound.com/sos/dec06/articles/cwejmanvm1.htm
The history of Cwejman goes back to the 1970s with a bespoke fully analog synthesizer called the Synthra. After a long hiatus due to the heyday of digital synths, they returned in 1998 seeing that the interest in analog modular synths was catching up. Ever since, Cwejman has been a synonym of uncompromising engineering aimed to provide outstanding sound quality.