Peavey ICS 4200 user manual R E U G E A R T, Operating Precautions

Operating Precautions

Make sure the mains voltage is correct and is the same as that printed on the rear of the amplifier. Damage caused by connecting the amplifier to improper AC voltage is not covered by any warranty.

Note: Always turn off and disconnect the amplifier from mains voltage before making audio connections. Also, as an extra precaution, have the attenuators turned down during power-up.

It is always a good idea to have the gain controls turned down during power-up to prevent speaker damage if there is a high signal level at the inputs. Whether you buy or make them, use good-quality connections, input cables and speaker cables, along with good soldering technique, to ensure trouble- free operation. Most intermittent problems are caused by faulty cables.

Consult the Wire Gauge Chart (below) to determine proper gauges for different load impedances and cable lengths. Remember that cable impedance robs amplifier power in two ways: power lost directly to resistance (I2R loss), and by raising the total load impedance.

	W I R E		G A U G E		C H A R T
Cable Length		Stranded Wire Gauge		Power Loss into	Power Loss into	Power Loss into
(In Feet)		(AWG)		8 Ohms (%)	4 Ohms (%)	2 Ohms (%)
5		18		.79	1.58	3.16
		16		.50	1.00	2.00
		14		.31	.62	1.24
		12		.20	.40	.80
		10		.125	.25	.50
10		18		1.58	3.16	6.32
		16		1.00	2.00	4.00
		14		.62	1.25	2.50
		12		.40	.80	1.60
		10		.25	.50	1.00
40		18		8.00	12.60	25.20
.		16		4.00	8.00	1.60
		14		2.50	5.00	10.00
		12		1.60	3.20	6.40
		10		1.00	2.00	4.00
		8		.625	1.25	2.50
80		16		8.00	16.00	32.00
		14		5.00	10.00	20.00
		12		3.20	6.40	12.80
		10		2.00	4.00	8.00

5