Zagrzeb 是一款為 Eurorack 系統打造的立體聲四極(24dB/oct)狀態變數式電壓控制濾波器(State Variable VCF),專為需要高品質立體聲處理的模組合成器使用者所設計。不同於常見的經典濾波器複刻,Zagrzeb 採用全新開發的四極 State Variable 架構,在聲音性格上兼具乾淨、平滑與足夠的個性表現,並非單純模仿任何既有設計。
在一般電平下,Zagrzeb 的音色走向清晰、細膩,特別適合用於立體聲取樣、立體聲振盪器或完整聲部的後段處理;當輸入較高電平時,濾波器則能自然進入過載狀態,產生具有厚度與存在感的音色變化,而不顯得粗糙或失控。這樣的聲音取向,特別容易讓人聯想到早期日本合成器所具備的穩定與內斂質感,但 Zagrzeb 本身並非任何經典機種的複製品,而是一款現代設計、聲音取向明確的全類比濾波模組。
Zagrzeb 提供 五種不同的濾波響應(frequency responses),其中可同時輸出三種,讓使用者在同一時間內取得多個頻段處理結果,無論是並行混音、頻段分流,或是複雜的立體聲濾波路由都相當直覺。其 24dB/oct 的 Low Pass 與 High Pass 模式,在高共振(resonance)設定下仍能維持低頻完整度,不會出現常見的低頻流失問題,對於需要厚實低頻基礎的聲音設計尤為重要。
除了立體聲濾波本體,Zagrzeb 亦能靈活處理單聲道訊號。透過輸入端內建的特殊相位偏移(phase shifting)網路,即使是單一 mono 訊號,也能在模組內部轉換為具空間感的「假立體聲(faux stereo)」輸出,進一步拓展聲音在立體聲場中的表現。此外,模組也支援立體聲展開寬度(stereo spread)的電壓控制,能以 CV 即時調整左右聲道之間的關係,特別適合與 LFO、包絡或隨機電壓搭配,建立持續變化的立體聲動態。
產品特點
全類比(All-analog)電路設計
立體聲四極(4-pole)State Variable 濾波器
五種濾波響應,其中三種可同時輸出
24dB/oct Low Pass 與 24dB/oct High Pass
高共振設定下不會造成低頻衰減
支援單聲道轉假立體聲的聲像處理
立體聲展開寬度可由電壓控制
詳細規格
模組格式:Eurorack 相容
濾波類型:Stereo State Variable VCF
濾波極數:4-pole(24dB/oct)
可用濾波響應數量:5 種(3 種可同時輸出)
設計類型:全類比電路
面板寬度:8 hp
機身深度:Skiff friendly
電流消耗:+70 mA / –60 mA
電源保護:Reverse power protection
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