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Instructions for modification of Behringer DCX analog
inputs and outputs
The following instructions will cover the details of
modifying a DCX for upgraded analog outputs 1-6 and
analog inputs A & B (input C excluded).
These modifications require a high level of experience
with electronics. If you doubt your ability to complete
the mods correctly, please contact BehringerMods to
arrange an installation service.
BehringerMods take no responsibility for damage
caused to your equipment by modification.
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Summary of Contents for Behringer DCX Series
- Page 1 BehringerMods.com Instructions for modification of Behringer DCX analog inputs and outputs The following instructions will cover the details of modifying a DCX for upgraded analog outputs 1-6 and analog inputs A & B (input C excluded). These modifications require a high level of experience with electronics.
- Page 2 Upgrade PCB Link PCB The modification package should come with the following parts: • Analog input and output upgrade PCB • Link PCB • Ribbon Cable x2 • PCB Stands x4...
- Page 3 Get a cup of tea or coffee. Remove the equipment cover and keep the screws in a dish. Use pointy nosed pliers to gently remove the glue securing the main ribbon and smaller ribbon cable connecting the rear PCB to the main PCB. Remove all screws that secure the rear PCB to the case.
- Page 4 Cut the legs of pins 2 and 3 on output XLRs 1-6. Tip: I make two cuts, to leave a clear gap. If you look inside the front of the socket, the pins are numbered. Locate and remove capacitors C26, C27, C41, C42 Do not damage the PCB, it is delicate.
- Page 5 Clear solder from the positive pads (round holes, not square) with a solder sucker or solder wick. We will connect wires here.
- Page 6 Solder IDC 2 ribbon lines: Line 18 (Orange) to C41 Line 17 (Yellow) to C26 Line 16 (Green) to C42 Line 15 (Blue) to C27 (Line 1 is black on the far side of the ribbon, Line 20 is brown. If the ribbon is not colour coded line 1 has a red stripe) Line 1 Line 20...
- Page 7 Solder IDC 2 Lines: Line 1 to Bottom of C4 Line 2 to Bottom of C3 Line 3 Line 9 Line 4 Line 10 Line 11 Line 5 Line 12 Line 6 Line 7 Line 13 Line 8 Line 14 Solder IDC 2 Lines: Line 3 (Gray) to XLR 3 - Pin 3 Line 9 (Brown) to XLR 6 –...
- Page 8 On the Main PCB (not rear PCB) Remove SMD capacitors C88, C87. Leave the gap open circuit. Re-install the rear PCB. Install the upgrade PCB with self adhesive feet.
- Page 9 Connect the Link PCB to the Main PCB ribbon socket. Tip: Ensure the plug is central. It is possible to place it 1 pin sideways. Connect the Main ribbon from Rear PCB to the Link PCB.
- Page 10 Also re-connect the smaller Rear PCB ribbon. Upgrades are now complete! If you removed the ribbon plug from the Upgrade PCB. The ‘Bump’ on the ribbon plug faces the centre of the PCB on both IDC1 and IDC 2. Unfortunately due to my mistake there was not space for a full size socket body.