Rolls RP220 owner manual Front Panel Description, Rear Panel Description, Specifications

FRONT PANEL DESCRIPTION

Note: Channel One descriptions are identical to Channel Two

PHANTOM POWER +48V

Turns on the internal 48 volt power supply for using phantom powered microphones. It should be left off when not in use.

30 dB Pad

When pressed in, the rear panel XLR input is attenuated by 30 dB. It does not switch the instrument input.

INSTRUMENT INPUT

1/4" input jack for plugging a guitar, electric bass, or other instrument direct into the preamp. When this jack is used, the XLR input on the rear panel is disconnected.

GAIN

Adjusts how much actual gain the preamp has. This is similar to a "trim" control on some mixers and is different from volume. With the gain set high the input may be distorted. For best signal to noise ratio this control should be set as high as possible without distortion, (unless distortion is desired).

VOLUME

Sets the output level as desired, for best signal to noise ratio it should be set in the middle of its range or higher.

OUTPUT LEVEL METERS

Each channel of the RP220 has five LED level meters, the last one being red indicating overload.

Dual Tube Microphone Preamp

	Channel One			Channel Two
	GAIN	VOLUME	GAIN		VOLUME
	NORM		NORM
+48V	-30dBINSTRUMENT		+48V
			-30dBINSTRUMENT			PWR
	INPUT		INPUT
	+38 dB +65	- OO dB 0	+38 dB	+65	- OO dB 0	RP220
PHANTOM INPUT			PHANTOM INPUT
POWER PAD			POWER PAD

REAR PANEL DESCRIPTION

Note: Channel One descriptions are identical to Channel Two

INPUT

Standard XLR type balanced inputs, pin 2 is hot, for Mic or line-level audio sources. (e.g., instrument, microphone or mixer).

OUTPUT JACKS

1/4" phone connectors or balanced XLRs used for connection to your line inputs on your load (e.g., DAT, Amp. or mixer).

30 dB Pad

This switch changes the level of the Output XLR jack only. When in, it attenuates the output level by 30 dB.

PHASE REVERSE

When pressed in, reverses the phase of the output signal 180 degrees from the input signal.

		SERIAL NUMBER
	MODEL RP220	220-
	CAUTION			CHANNEL		CHANNEL
120 VAC				TWO		ONE
50/60 Hz 15 VA	RISK OF ELECTRIC SHOCK		OUTPUT	INPUT		OUTPUT	INPUT
	DO NOT OPEN
	WARNING: DO NOT EXPOSE THIS EQUIPMENT TO RAIN		NORM	NORM		NORM	NORM
					OUTPUT
MADE IN U.S.A.	OR MOISTURE.	OUTPUT	REV	-30dB		REV	-30dB
	CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT
	NOT REMOVE BACK. NO USER SERVICABLE PARTS INSIDE. REFER		PHASE OUTPUT			PHASE OUTPUT
	SERVICING TO QUALIFIED SERVICE PERSONNEL.
				LEVEL			LEVEL
	RISQUE DE CHOC - NE PAS ENLEVER
NRTL /C

SPECIFICATIONS
Frequency Response	20Hz - 40kHz, +/- 3dB Mic/Line
	5Hz - 40kHz inst.
Input Impedance	600 ohm balanced XLR
	1M ohm Instrument
THD	0.1% typical
S\N Ratio	>107 dB
Max Gain	48dB Inst or line, 70dB XLR
Indicators	2 - LEDs (Phantom Power)
	5 - Level LEDs, 4 green 1 red
Input/Output jacks	XLR balanced and 1/4"
Dimensions	3.5" X 6" X 19" (89mm X 162mm X 482mm)
Power	120VAC (230VAC) 15VA

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