{"product_id":"doepfer-a-143-9","title":"Doepfer - A-143-9","description":"\u003cp\u003eModule A-143-9 is a derivative of Doepfers planned thru-zero quadrature VCO. It is a voltage controlled sine LFO with 4 outputs.\u003c\/p\u003e \u003cp\u003eThe phase shift between the outputs is 90 degrees. The sine shifted by 90 degrees is also called cosine, the sine shifted by 180 degrees is nothing but the inverted sine, and the sine by 270 degrees is nothing but the inverted cosine. The frequency range is from some minutes to moderate audio (a few kHz) with three ranges selected by a toggle switch.\u003c\/p\u003e \u003cp\u003eTwo frequency control inputs are available: CV1 without attenuator and CV2 with polarizer. Consequently the module can be used even as an experimental sine VCO but does not feature an exact 1V\/oct CV input! Two LEDs display the positive and negative share of the sine output.\u003c\/p\u003e \u003cp\u003eThe core of the module is a so-called quadrature circuit that generates a sine and a cosine signal with very low distortion. The quality of the sine\/cosine signals are much better than those generated by a waveform converter with a sawtooth or triangle signal as starting point.\u003c\/p\u003e \u003cp\u003eThe output levels are about 5 Vss (+\/-2.5V) but can be adjusted internally by a trimming potentiometer.\u003c\/p\u003e \u003cp\u003eTypical applications:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eExternal sine\/cosine oscillator for the frequency shifter A-126\u003c\/li\u003e \u003cli\u003eModulations with pure sine\/cosine waveforms\u003c\/li\u003e \u003cli\u003equadrature\/barberpole effects\u003c\/li\u003e \u003cli\u003eexperimental sine\/cosine VCO\u003c\/li\u003e \u003c\/ul\u003e HP : 8","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":54725921669461,"sku":null,"price":43.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/1872\/3413\/files\/a-143-9.jpg?v=1787442477","url":"https:\/\/climivor.myshopify.com\/products\/doepfer-a-143-9","provider":"CLIMIVOR","version":"1.0","type":"link"}