Rolls GCi404 owner manual Specifications, Description

SPECIFICATIONS

MIC INPUT
Input Impedance:	10K Ohms bal, unbal.
Max Input Level:	+4 dBV XLR bal, +10 dBV unbal.
Max Gain:	60 dB/XLR, 54 dB 1/4”
EIN:	-108 dB max.
THD:	<.01%
Phantom Power:	+12 Volts, 6 mA
INSTRUMENT INPUT
Input Impedance:	50k Ohms
Max Gain:	30dB
LINE INPUTS
Input Connectors:	RCA, 1/8” TRS Stereo
Input Sensitivity:	30 dB gain @ 1kHz, 47k Ohms Input Z
Input Impedance:	50k Ohms
PHONO PREAMP
Input Impedance:	50k Ohms
Equalization:	RIAA, +/- 2dB
Ref. Gain:	+20 dB @ 1 kHz
LINE OUTPUTS
Output Impedance:	100 Ohms
Max Output Level:	+12 dB
Frequency Response:	+ / - 1.5dB 15 Hz - 30 kHz
THD:	.02% @ 1KHz
S/N Ratio:	>80 dB unweighted
Output Connectors:	RCA, 1/8” TRS - Stereo, 4-pin hdr.

Dimensions: 1.7”H x 5.9” W x 3.7” D

Weight: 1 lb.

Power: 12VDC (Rolls PS27 Incl.)

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DESCRIPTION

FRONT PANEL

MICROPHONE

INPUT: Balanced XLR jack for connection to low imped- ance dynamic or condenser micro- phone.

LEVEL: Adjusts the amount of signal in the microphone preamp.

PHANTOM PWR: Header connector - connects the 12VDC phantom power for the XLR Microphone Input.

BAL: Varies the relative amount of microphone signal sent to the Right and Left Outputs.

INSTRUMENT

LEVEL: Adjusts the amount of signal in the instrument circuitry.

INPUT: 1/4” unbalanced jack for connection to instruments such as guitars, keyboards, etc.

PHONO/LINE

LEVEL: Adjusts the level of all deviced connected to the Phono or Line Inputs.

INPUT (Phono): Two RCA jacks for connection specifically to the output of a phono turntable.

INPUT (Line): Two RCA jacks for connection to line or consumer product outputs such as a CD or cassette player.

STEREO INPUT: 1/8” (3.5mm) TRS stereo jack for connection to a stereo line source such as a portable CD player or MP3 player.

GROUND: For connection to the grounding cable of a phono tuner.

DUCKING: Header connector - connects the Ducking function.

PWR: Indicates the GCi404 is properly connected to a power source.

REAR PANEL

POWER: 12VDC, 150mA. 2.1 x 5.5mm barrel jack and header port

-for connection to the Rolls PS27 AC adapter, or to the computer’s 3 1/2 inch floppy drive power cable.

DUCKING

DEPTH: Adjusts the amount of LINE signal allowed to pass to the Outputs when ducking is occuring.

RELEASE: The amount of time taken for the ducked LINE signal to return to its normal level after the sigal at the Mic Input stops.

CD INPUT Port: 4-pin header for connecting to a CD rom output port. A CD Rom audio cable is required.

LINE OUTPUTS:

STEREO OUTPUT: (1/8” (3.5mm) jack)

LINE OUTPUT (RCA):

LINE OUTPUT (Header Port):

Each of these outputs contain the Right and Left output signals.

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