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| The x0x-heart is the heart of the x0xb0x, surgically extracted from the x0x to be transplanted into your designs. |
The x0x-heart is the heart of the x0xb0x, surgically extracted from the x0x to be transplanted into your designs. The x0x is a faithful replica of the Roland TB-303, complete with sequencer and DIN/MIDI/USB. The x0x-heart is just the analog section of the TB-303, replicated with SMT components, and made small enough to fit into a Eurorack modular format. It even has a Eurorack power header on it. The x0x-heart is designed to be small, inexpensive, and a close replica of the TB-303. It is not a perfect replica - some sacrifices were made to keep costs down - but its pretty darn close. Of the original transistors that are still available, none are available in SMT, so all new transistors were used. The PMP4201/5201 matched pairs were selected, and use throughout. These have very similar characteristics to the 2SC2291 and 2SC1583 matched pairs used in the 303, but have better matching characteristics. ==== Mods ==== ==== Documentation ==== * [[attachment:p0x2_board.png|board image]] [[attachment:p0x2.brd|board eagle file]] * [[attachment:p0x2_schem.png|schematic image]] [[attachment:p0x2.sch|schematic eagle file]] * [[attachment:audioint.lbr|library eagle file]] * [[attachment:p0x2.zip|pcb gerber files]] * [[attachment:p0x2_bom.ods|parts listing]] |
x0x-heart
About the x0x-heart
The x0x-heart is the heart of the x0xb0x, surgically extracted from the x0x to be transplanted into your designs. The x0x is a faithful replica of the Roland TB-303, complete with sequencer and DIN/MIDI/USB. The x0x-heart is just the analog section of the TB-303, replicated with SMT components, and made small enough to fit into a Eurorack modular format. It even has a Eurorack power header on it.
The x0x-heart is designed to be small, inexpensive, and a close replica of the TB-303. It is not a perfect replica - some sacrifices were made to keep costs down - but its pretty darn close. Of the original transistors that are still available, none are available in SMT, so all new transistors were used. The PMP4201/5201 matched pairs were selected, and use throughout. These have very similar characteristics to the 2SC2291 and 2SC1583 matched pairs used in the 303, but have better matching characteristics.
Mods
