Deep down in the jungle i start patching buchla bongo by Sgurz published on 2012/04/21 10:27:11 +0000 Buchla Bongo patch on Eurorack modular. Hertz Donut's triangle wave modulated by cycling Sport Modulator. A clone of the Buchla 292c Low Pass made by Thomas White. HD is sequenced by Renè. Everything is processed by E560 Deflector Shield.