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Attenuation display
External DC power jack
V. WARRANTY AND DISCLAIMERS
Disclaimer
QSC Audio Products, Inc. is not liable for any damage to speakers, amplifiers, or any other equipment that is caused by negligence
or improper installation and/or use of the SPA-3.
Product Warranty
QSC Audio Products, Inc. guarantees the SPA-3 to be free from defective material and/or workmanship for a period of three years
from date of sale, and will replace defective parts and repair malfunctioning products under this warranty when the defect occurs
under normal installation and use—provided the unit is returned to our factory via prepaid transportation with proof of purchase
(sales receipt). This warranty provides that examination of the returned product must disclose, in our judgment, a manufacturing
defect. This warranty does not extend to any product which has been subject to misuse, neglect, accident, improper installation,
or where the date code has been removed or defaced.
IV. OPERATION
P
e r
s s
n (
=
C
a h
n n
l e
) #
The table at left shows the button sequences for all possible operations on the
U n
P
SPA-3.
o H
d l
U n
P
D
O
W
N
n
The adjustable range of attenuation on each channel is 0 (no attenuation) to
n
o H
d l
D
O
W
N
32 dB. The attenuation changes in real time as you make the adjustments. Half-
n + P
U n
S
I H
T F
decibel settings are indicated by the right decimal point of the two-digit
display. For example, a display of
S
I H
T F
n +
D
O
W
N
n
while
S
H
F I
1 T
+
S
H
F I
2 T
will retain its settings in non-volatile memory.
S
H
F I
2 T
+
U
1 P
S
H
F I
1 T
+
U
2 P
S
H
F I
2 T
+
D
O
W
N
1
S
H
F I
1 T
+
D
O
W
N
2
Signal indicators
Inputs
indicates a setting of 18 dB of attenuation,
would indicate 18.5 dB. Even when its DC power is removed, the SPA-3
The buttons, displays, and other features of the SPA-3
4
Up button
Down button
Shift button
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