Mackie UP4121, UP4161, UP4061 instruction manual Front Panel Features, Rear Panel Features

FRONT PANEL FEATURES

LOW EQ is a shelving filter that provides 12 dB of boost and cut below 100Hz.

HIGH EQ is a shelving filter that provides 12 dB of boost and cut above 10kHz.

VOLUME is a master volume control used to adjust the overall volume of the signal at the

POWER OUTPUTS.

Use the POWER switch to turn the UP4000 Series on and off.

The STD-BY indicator lights when the amplifier is in standby mode.

Note: Standby mode is disabled by default. An internal jumper (J1 on the input board) must be changed to enable standby mode. See "Internal Settings" on page 8.

The OVERLOAD indicator lights when the amplifier is operating in overload, a condition generally caused by a problem on the speaker line. When the amplifier is switched on, the OVERLOAD light comes on for a few seconds. This is normal and does not indicate a problem.

The SIGNAL indicator lights when a signal is present at the POWER OUTPUTS.

The PEAK indicator lights when the output signal is approaching clipping.

The ON indicator lights when the UP4000 is turned on and ready for operation.

REAR PANEL FEATURES

POWER INPUT provides a means to connect an external 24 VDC power supply or battery as an alternative or backup power source. The UP4000 Series seamlessly switches to the backup supply if there's an AC power loss. When both AC power and 24 VDC power are connected, the DC power is switched off.

Note: The unit is not equipped with battery charging capability.

The D.C. FUSE protects the DC power input to the amplifier circuit. Replace with the same type fuse only.

POWER OUTPUTS are screw-terminal connections for connecting speakers to the 4-ohm, 25V, 50V, 70V, or 100V outputs.

WARNING: To prevent the risk of electric shock, never touch the bare wires coming from the output terminals of the amplifier when it is switched on. When all connections have been made, insulate the output terminals of the amplifier using the protective cover provided.

Constant-Impedance Output

The total impedance of the speakers and cable connected to the "4Ω" constant-impedance output should be 4 ohms. Connect the "4Ω" terminal to the "+" (HIGH) speaker terminal, and the "0" terminal to the "–" (LOW) speaker terminal.

Constant-Voltage Output

In a constant-voltage system, each speaker must be equipped with a line transformer having an input voltage equal to that of the line (e.g., 25V, 50V, 70V, or 100V). Typically, these line trans- formers have selectable power taps (i.e., 2.5W, 5W, 10W) for connecting to the constant-voltage line. CAUTION: The sum of the wattage values of the speakers must not exceed the output power of the amplifier.

UP 4161 - P.A. AMPLIFIER

STD-BY OVERLOAD SIGNAL PEAKON

				EQ			VOLUME
	LOW				HIGH		4	5	POWER
								6
2	0	2		2	0	2
							3		7
4			4	4		4
6				6 6		6	2		8
8			8	8		8	1		9
-10		+10		-10		+10
							0	10

UP4000 – 4