Infinity Troubleshooting and Specifications for Kappa 202a Amplifier

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 202a (i.e., green LEDs on the top panel are on).

SYMPTOM	LIKELY CAUSE	SOLUTION
No audio	Low /No Remote	Check connections;
	Turn-On Voltage	test turn-on voltage
	Speakers are not	Check wiring; use
	connected or are	VOM/DVM to
	blown	measure speaker
		coil impedance
Distorted audio	Input sensitivity	See Setting Input
	and/or bass control	Sensitivity and
	is not set properly	Setting DBO
		on previous page
Audio lacks	Speakers are wired	Check polarity of
“punch”	with wrong polarity	connections; refer to
		Applications (page 3 )

SYMPTOM	LIKELY CAUSE	SOLUTION
Audio cycles	A protection circuit	Verify the following–
off and on;	is turning the	electrical system is
Amber protec-	amplifier off and on	between 10 ~ 15.5 Vdc;
tion LEDs (on		temperature is not
top panel) are on		over 194°F (90°C);
		no short circuits;
		speaker loads are not
		less than 1 ohm
		(2 ohms in mono)
Audio cycles	GAIN is set too high	Set Input Sensitivity
off and on;		correctly (see previous
Amber protection		page)
LEDs (on top
panel) are on
Fuse blows	Incorrect wiring or	Check connections;
	short circuit	refer to Applications
		(see page 3)

S P E C I F I C A T I O N S

K A P P A 2 0 2 A . . .

Power Output, 4 ohms:	2 x 200 watts
Power Output, 2 ohms:	2 x 300 watts
Power Output, Bridged 4 ohms: 600 watts
Frequency Response:	20 Hz ~ 20 kHz
Input Sensitivity:	250 mV ~ 9 V
THD + Noise (4 ohms):	0.05 %
Signal-to-Noise:	> 95 dB
Maximum Current Draw:	80 A
Dimensions (w x h x l):	19 1 ⁄2 x 2 3 ⁄16 x 81 ⁄2 in.
	495.3 x 55.6 x 215.9 mm

	DBO FREQ Control			DBO Q Control
		(adjusts cut-off		(adjusts boost amount
dB		frequency)	dB	at cut-off frequency)
0			12
-3			6
-6			0
-9			-6
-12	20	80 Freq. (Hz)	-12	20	80 Freq. (Hz)

Figure 9. Frequency response curves show range of Kappa 202a DBO controls.

®

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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. Dynamic Bass Optimizer and Unibloc are trademarks of Infinity Systems, Inc. Weco is a registered trademark of Weco, Inc.

8 – Infinity Kappa 202a Power Amplifier P/N SH1104 Rev. 3