Lavry DA10 User Manual - page 10
LavryBlack DA10
Operation
7
If you have difficulty determining the correct setting, please contact
techsupport@lavryengineering.com
once you have the manufacturer’s ratings for your
equipment.
G. SETTING THE DA10’S INTERNAL JUMPERS
The internal jumpers must be configured to match the wiring of the cables or adapters which will
be plugged into the DA10’s XLR outputs. If they are not set properly before the XLR outputs are
connected to unbalanced wiring or inputs, no damage will result because the outputs are
protected against “short circuits,”
but the output signal will be significantly distorted at higher
volume levels.
It is therefore recommended that you open the DA10 and set the internal jumpers
to the correct setting before using the DA10 with unbalanced output connections.
If custom cables are an option, please also see section H- ALTERNATIVE WIRING FOR
UNBALANCED CONNECTIONS
Opening the DA10 to Set the Internal Jumpers-
1.) If you have not plugged the DA10 in yet, it is a good idea to do so first. Plug in the only the AC
power cord, and turn the DA10 “ON.” Start by reducing the volume setting to “00” and turn “OFF”
the AC power to the DA10.
2.) Disconnect all cable connected to the DA 10, including the AC power cord.
NEVER OPEN THE DA10 CASE WITHOUT FIRST DISCONNECTING THE AC POWER CORD!
3.) Next, place the DA10 bottom-side-up on a table and remove the five recessed Phillips head
screws located around the outer edge of the top cover with a #2 Phillips screwdriver.
4.) Carefully turn the DA10 over, and position it with the back panel near the edge of the table.
The back panel is the one with the input and output connectors.
5.) You may need to pick the DA10 up a bit to start sliding the bottom chassis out of the top
cover. Once it starts to come out, we would recommend grasping the chassis by placing your
thumb on the top edge of the rear panel with your four fingers under the bottom of the unit. Slide
the bottom chassis completely out of the top cover.
6.) Place the DA10 chassis so the front edge (with the switches and digital Volume display) is
closest to you, and you are looking towards the inside of the back panel.
7.) Looking down from above, the jumpers are located just in front of the XLR connectors
mounted in the back panel. Each “jumper” consists of a row of three small square gold pins set in
a black plastic base. The jumpers are actually the small rectangular black plastic blocks that are
placed across two of the three pins in each set.
8.) Look for the designation printed on the circuit board next to each set of pins. It will say either
“Hot, Pin 2, & Ground” or “Hot, Pin 3, & Ground” next to each set of pins. (see example below)
9.) Most standard adapters are wired for “Pin 2 Hot Unbalanced.” This means Pin 3 is connected
to Pin 1 (which is “ground”); setting the jumpers for “Pin 2 Hot Unbalanced” operation will be used
for the first example. Skip to step (11) for “Pin 3 Hot Unbalanced” settings.
To set the jumpers for “Pin 2 Hot Unbalanced” operation:
10.) The jumpers that need to move are the ones labeled: “Hot, Pin 3, & Ground.” Pull the small
rectangular black plastic jumper straight “up” and off of the two pins it is on and re-position it to
slide back down on the two pins labeled “Pin 3” and “Ground.” Once you have done this for both
left and right XLR connector, you are done with this part. Please go to step (12).