to flip the switches. Do not use a knife or
other sharp object, as it might damage the
switch.
Despite of what it may say on the switch,
Down is Off and Up is On.
DMX
Mode
Sw 1 -
Sw 9
Sw 10
Sw 11
Sw 12
Description
Non-D
MX
Mode &
Options
Off
=
Amp
on only
when
playing
On
=
Amp
always
on
Off
Off
Not Using DMX-512.
Select operating mode
& options on Sw 1-9
DMX
Mode 1
DMX
Address
On
Off
One DMX address
selects & plays
SoundFiles
DMX
Mode 2
DMX
Address
Off
On
Same as above, but
once playing,
SoundFiles are
Unsteppable
DMX
Mode 3
DMX
Address
On
On
1st addr. used to select
& play SoundFiles,
2nd controls volume
The DMX-512 Address is set using
D i p S w i t c h p o s i t i o n s # 1 t h r o u g h # 9
(down=Off, up = On).
DMX-512 addresses are either ‘One-Based’
(addresses run from 1 to 512) or ‘Zero-
Based’ (addresses run from 0 to 511).
Zero-based DMX-512 addressing was
originally used on all DMX-512 equipment.
Some users had trouble with the idea of
counting from ‘zero’, so one was added to
the zero-based DMX-512 addresses to make
them one-based. Most installations now use
one-based DMX-512 addresses.
Use the first column to find a One-Based
DMX-512 address. Use the second column
for Zero-Based DMX-512 addresses. Then
set DipSwitch positions one through nine as
shown in the chart at the end of this manual.
Trigger Inputs:
The two trigger inputs can be used with any
type of switch. This can be a pushbutton,
motion detector, IR beam, step mat, a digital
signal from a control
system, or anything
else that will give you
a ‘powered switch
closure’. The
trigger inputs
a r e n o n -
p o l a r i z e d
(they don’t care
w h i c h
t e r m i n a l i s
p o s i t i v e o r
negative) and
opto-isolated. You
must feed a DC voltage into them. Just
touching a pair of leads from a nine volt
transistor radio battery is a good test of the
inputs. As shown in the first illustration, you
can ‘borrow’ some of the power that is
running the
Sd-25
using the adjacent
‘Power’ screw terminals, or use a separate
isolated supply (as
s h o w n i n t h e
second illustration).
The isolated power
supply can
be any DC
p o w e r
s u p p l y o r
battery, as
long as the
o u t p u t i s
between 5
a n d 2 4 v d c .
Because the inputs are not
polarity sensitive, you can wire the power
B
Right
Power
12-24
vdc
A
Trigger
Inputs
Speakers
Running
Status
Switch 'B'
Switch 'A'
B
Left
Right
Power
12-24
vdc
A
Trigger
Inputs
Speakers
(8
Ω
)
Running
Status
Switch 'B'
Switch 'A'
Isolated
Power
Supply
Gilderfluke & Co.• 205 South Flower Street • Burbank, California 91502 • 818/840-9484 • 800/776-5972 • fax 818/840-9485
Sd-25 w/DMX Manual • page 12 of 40 • © July 21, 2017 • Gilderfluke & Co. • DCM
