Date: March 4, 2019
Doc: D00282-01
Rev: 1
OB-X Voice Expansion Kits
INTRODUCTION
The Oberheim OB-X was sold in 4-voice, 6-voice and 8-voice variations. Our voice expansion kits were
developed for those wanting to upgrade a 4-voice or 6-voice model, and for those wanting to add multimode
filter support.
Please note: There are also video installation & calibration guides in addition to this pdf document:
OB-X Custom Parts Installation
OB-X Additional notes on filter calibration
CONTENTS
4-Voice Expansion
(4) OB-X Voice Card Assemblies
(1) OB-X Motherboard Assembly (Expansion)
(1) Motherboard Tray
(1) Filter Control Board
(4) 10-Position Connectors
(1) 5-Position Connector
(1) 4-Position Connector
(1) 4-Position Power Connector
(1) 4-Position DF13-style connector (pre-plugged to voice motherboard)
Mounting hardware for mounting motherboard tray, voice cards, and filter control board
8-Voice Kit
(8) OB-X Voice Card Assemblies
(1) OB-X Motherboard Assembly (Primary)
(1) OB-X Motherboard Assembly (Expansion)
(1) Motherboard Trays
(1) Filter Control Board
(7) 10-Position Connectors
(1) 10-Position Connector w/ long wires for gate & CV I/O
(1) 5-Position Connector
(3) 4-Position Connectors
(1) 4-Position Power Connector
(2) 4-Position DF13-style connector (pre-plugged to voice motherboards)
Mounting hardware for mounting motherboard tray, voice cards, and filter control board
