Gemini PS-900 PRO Introduction, Features, Using the Ground Lift Switch, Connections, Operation

Introduction

Congratulations on purchasing the Gemini PS-900 PRO mixer. This state of the art mixer is backed by a three year warranty, excluding crossfader and channel slides. Prior to use, we suggest that you carefully read all the instructions.

Features

•4 Stereo Channels

•State of the Art Cue Section

•3 Phono/Line Convertible, 5 Line, and 3 Mic Inputs

•Cut Feature for Bass, Mid and High for each channel

•Gain, High, Mid and Bass tone controls for each channel

•Talkover

•Loop

•Balanced and Unbalanced Master Outputs

•BOOTH and Record outputs

•Dual mode display

•Digital Sampler with 5 Memory Banks

•Battery backup to retain samples

Cautions

1.All operating instructions should be read before using this equipment.

2.To reduce the risk of electrical shock, do not open the unit. There are NO USER REPLACEABLE PARTS INSIDE. Please refer servicing to a qualified service technician.

In the U.S.A., if you have any problems with this unit, call 1-732-738-9003 for customer service. Do not return equipment to your dealer.

3.Do not expose this unit to direct sunlight or to a heat source such as a radiator or stove.

4.This unit should be cleaned only with a damp cloth. Avoid solvents or other cleaning detergents.

5.When moving this equipment, it should be placed in its original carton and packaging. This will reduce the risk of damage during transit.

6.DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.

7.DO NOT USE ANY SPRAY CLEANER OR LUBRICANT ON ANY CONTROLS OR SWITCHES.

to connect to your main amplifier. The REC OUTPUT (51) jacks can be used to connect the mixer to the record input of your recorder enabling you to record your mix. The BOOTH OUTPUT (50) jacks allow you to hook up an additional amplifier.

4.The MIC 1 (1) input (found on the front panel) accepts a 1/4" or XLR connector. The MIC 2 (66) input and the MIC 3 (65) input (found on the rear panel) accept 1/4" connectors. All accept balanced and unbalanced microphones.

5.On the rear panel are 3 stereo PHONO/LINE (57, 60, 63) inputs and 5 stereo LINE (54, 55, 56, 59, 62) inputs. The PHONO/LINE SWITCH (58) enables you to set the (57) input to Phono or Line. The PHONO/LINE SWITCH (61) enables you to set the (60) input to Phono or Line. The PHONO/LINE SWITCH (64) enables you to set the (63) input to Phono or Line. The phono inputs will accept only turntables with a magnetic cartridge. A GROUND SCREW (67) for you to ground your turntables is located on the rear panel. The stereo line inputs will accept any line level input such as a CD player, a cassette player, etc.

6.Headphones can be plugged into the front panel mounted HEADPHONE (45) jack.

7.The PS-900 PRO comes with a front panel BNC LIGHT (40) jack. This jack is for use with a gooseneck light like the Gemini GNL-700.

8.There are LOOP INPUTS (53) and LOOP OUTPUTS (52) located on the rear panel. If you are using an outboard signal processor, you can use the LOOP OUTPUTS (52) to send the signal to the device and the LOOP INPUTS (53) to bring the signal back in to the mixer. The unit comes with jumpers to be used with the loop inputs and outputs. Keep the jumpers in the unit if you are not using the loop to prevent interruptions in your music program.

Using the Ground Lift Switch

Depending on your system configuration, sometimes applying the ground will create a quieter signal path. Sometimes lifting the ground can eliminate ground loops and hum to create a quieter signal path.

1.With the mixer on, listen to the system in idle mode (no signal present) with the ground applied (the GROUND LIFT SWITCH (68) in the left position).

2.Then turn the power off before moving the GROUND LIFT SWITCH (68). Lift the ground by moving the GROUND LIFT SWITCH to the right, turn the power back on and listen to determine which position will provide a signal devoid of background noise and hum. Keep the GROUND LIFT SWITCH in the ground position if the noise level remains the same in either position.

CAUTION: DO NOT TERMINATE THE AC GROUND ON THE POWER MIXER IN ANY WAY. TERMINATION OF THE AC GROUND CAN BE HAZARDOUS.

Connections

1.Before plugging in the power cord, make sure that the VOLTAGE SELECTOR (46) switch is set to the correct voltage.

NOTE: This product is double insulated and not intended to be grounded.

2.Make sure that the POWER (41) switch is in the off position. The POWER LED (42) will be off.

3.The PS-900 PRO is supplied with 4 sets of amp output jacks. The BALANCED OUTPUT (48) jacks are used to connect to your main amplifier using standard XLR cables. We recommend using the balanced amp outputs if the cables to your amp are 25 feet or more. BALANCED OUTPUTS have three separate conductors, two of which are signal (positive and negative) and one shield (ground). Pin 1 is ground (shield). Pin 2 is signal hot (positive). Pin 3 is signal cold (negative). The MAIN OUTPUT (49) jacks are unbalanced and used

Operation

1.POWER ON: Once you have made all the equipment connections to your mixer, press the POWER SWITCH (41). The power will turn on and the POWER LED (42) will glow RED.

2.CHANNEL 1: The GAIN (9), HIGH (10), MID (11), and LOW (12) controls allow you to fully adjust the selected source. Switch # (13) allows you to select the PHONO 1/LINE 1 (63) or the LINE 2 (62) input. The CHANNEL SLIDE (14) controls the input level of this channel.

3.CHANNEL 2: The GAIN (9), HIGH (10), MID (11), and LOW (12) controls allow you to fully adjust the selected source. Switch # (15) allows you to select the PHONO 2/LINE 3 (60) or the LINE 4 (59) input. The CHANNEL SLIDE (16) controls the input level of this channel.

Page 3