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T R O U B L E S H O O T I N G
Use the following guide to identify symptoms and solve
problems. Make sure the vehicle's electrical system is
working properly and power is reaching the Kappa 54a (i.e.,
green LEDs on the top panel are on).
SYMPTOM
LIKELY CAUSE
No audio
Low /No Remote
Turn-On Voltage
Speakers are not
connected or are
blown
Distorted audio
Input sensitivity
is not set properly
Audio lacks
Speakers are wired
"punch"
with wrong polarity
S P E C I F I C A T I O N S
K
5 4
. . .
A P P A
A
Power Output, 4 ohms:
Power Output, 2 ohms:
Power Output, Bridged 4 ohms: 2 x 150 watts
Frequency Response:
Input Sensitivity:
THD + Noise (4 ohms):
Signal-to-Noise:
Maximum Current Draw:
Dimensions (w x h x l):
©1997, Infinity Systems, Inc., 20630 Nordhoff Street, Chatsworth, CA 91311, USA
Infinity constantly strives to update and improve existing products, as well as create new ones; therefore, the specifications and construction details in this and related Infinity
publications are subject to change without notice. Unibloc is a trademark of Infinity Systems, Inc.
8 – Infinity Kappa 54a Power Amplifier
SOLUTION
Check connections;
test turn-on voltage
Check wiring; use
VOM/DVM to
measure speaker
coil impedance
See Setting Input
Sensitivity on
previous page
Check polarity of
connections; refer to
Applications (page 3 )
4 x 50 watts
4 x 75 watts
20 Hz ~ 20 kHz
250 mV ~ 9 V
0.05 %
> 95 dB
40 A
3
1
16 x 2
⁄
x 8
⁄
in.
16
2
406.4 x 55.6 x 215.9 mm
VOICE (818) 407-0228 • FAX (818) 709-9486
www.infinitysystems.com
SYMPTOM
LIKELY CAUSE
Audio cycles
A protection circuit
off and on;
is turning the
Amber protec-
amplifier off and on
tion LEDs (on
top panel) are on
Audio cycles
GAIN is set too high
off and on;
Amber protection
LEDs (on top
panel) are on
Fuse blows
Incorrect wiring or
short circuit
®
SOLUTION
Verify the following–
electrical system is
between 10 ~ 15.5 Vdc;
temperature is not
over 194°F (90°C);
no short circuits;
speaker loads are not
less than 1 ohm
(2 ohms in mono)
Set Input Sensitivity
correctly (see previous
page)
Check connections;
refer to Applications
(see page 3)
P/N SH1103 Rev. 2
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