Gemini X-01 Operation Manual

Contents

(5)(5)(5)(5)(5)2. With the power off, connect your input cables to the CHANNEL 1 and 2inputs using the 1/4" (1, 2,) or XLR (3, 4) INPUT JACKS of each channel.3. Connect the loudspeakers to the CHANNEL 1 and CHANNEL 2SPEAKER OUTPUTS (10, 12, or 13, 14). THE TOTAL SPEAKER LOADMUST BE AT LEAST 4 OHMS PER CHANNEL. If you try to operate at alower impedance, the amplifier will go into protection mode and stopoperation until you correct the load conditions.4. With the LEVEL CONTROLS (20. 21) of both channels set to zero (fullycounterclockwise), turn the POWER SWITCH (15) ON. With the levelcontrols of your MIXER or other INPUT device turned all the way DOWN,turn the amplifier level controls all the way up for desired loudness fromyour speakers. Note, when the CLIP LED (19) light, there is distortionpresent in the amplifier’s output section. If a CLIP LED (19) remains on orflashes repeatedly, reduce the signal level by lowering the input levelcontrol for the channel that is clipping or reduce the level at the source.5. Now adjust your MIXER or other INPUT source to your desired listeninglevel. You also have the choice of keeping the volume of both speakersequal, or for certain situations you can adjust the volume so one sidewill be louder than the other.PARALLEL MONO OPERATION:Follow these instructions for PARALLEL MONO operation using asingle input cable, and you will have the same monophonic signal onboth the CHANNEL 1 and the CHANNEL 2 outputs. Each channel’soutput is controlled independently by that channel’s level control.1. With the power OFF, set the OPERATION MODE SWITCH (5) to thePARALLEL MONO position.2. With the power OFF, connect your input cables to the CHANNEL 1 inputonly using the INPUT JACK, 1/4" (1) or XLR (3) of CHANNEL 1.3. Connect the loudspeakers to the CHANNEL 1 and CHANNEL 2SPEAKER OUTPUTS (10, 12). THE TOTAL SPEAKER LOAD MUST BEAT LEAST 4 OHMS PER CHANNEL. If you try to operate at less than 4Ohms per channel, the amplifier will go into the protection mode and stopoperation until you correct the load conditions.4. With the LEVEL CONTROLS (20. 21) of both channels set to zero (fullycounterclockwise), turn the POWER SWITCH (15) ON. With the levelcontrols of your MIXER or other INPUT device turned all the way DOWN,turn the amplifier level controls all the way up for desired loudness fromyour speakers. Note, when the CLIP LED (19) light, there is distortionpresent in the amplifier’s output section. If a CLIP LED (19) remains on orflashes repeatedly, reduce the signal level by lowering the input levelcontrol for the channel that is clipping or reduce the level at the source.5. Now adjust your MIXER or other INPUT source to your desired listeninglevel. You also have the choice of keeping the volume of both speakersequal, or for certain situations you can adjust the volume so one sidewill be louder than the other.MONO BRIDGE OPERATION:Follow these instructions to bridge the unit’s output. Bridging theamplifier converts the unit to a monophonic or single channel amplifier.The amplifier can be used with 8 Ohm or higher loads only in MONOBRIDGE mode. This mode is used to provide a higher voltage withgreater headroom to your speaker. Before setting your amplifier forMONO BRIDGE operation, make sure that your speaker can handle thehigh power level provided by the amplifier in MONO BRIDGE mode.CAUTION: VOLTAGE OVER 100 VOLTS MAY BE PRODUCED AT THE BRIDGE OUTPUTTERMINALS IN THIS MODE.1. With the power off, set the OPERATION MODE SWITCH (5) to theBRIDGE position.2. With the power off, connect your input cables to CHANNEL 1 input onlyusing the INPUT JACK, 1/4" (1) or XLR (3) of CHANNEL 1.3. Connect the loudspeaker to the BRIDGE SPEAKER OUTPUT (11) only.Be sure the polarity of your connection is correct. The total speaker loadmust be at least 8 Ohms or above. If you try to operate at less than 8Ohms in the MONO BRIDGE mode, the amplifier will go into theprotection mode and stop operation until you correct the load conditions.4. With the CHANNEL 1 LEVEL CONTROL (20) set to zero (fullycounterclockwise), turn the POWER SWITCH (15) ON. With the levelcontrols of your MIXER or other INPUT device turned all the way DOWN,turn the amplifier level control all the way up for desired loudness fromyour speakers. Note, when the CLIP LED (19) light, there is distortionpresent in the amplifier’s output section. If a CLIP LED (19) remains on orflashes repeatedly, reduce the signal level by lowering the input levelcontrol for the channel that is clipping or reduce the level at the source.5. Now adjust your MIXER or other INPUT source to your desired listeninglevel. You also have the choice of keeping the volume of both speakersequal, or for certain situations you can adjust the volume so one sidewill be louder than the other.USING THE GROUND LIFT SWITCH:Depending on your system configuration, sometimes applying theground will create a quieter signal path. Sometimes lifting the groundcan eliminate ground loops and hum to create a quieter signal path.1. With the power amp on, listen to the system in idle mode (no signal present)with the ground applied (the GROUND LIFT SWITCH (6) in the left position).2. Turn the power off before moving the GROUND LIFT SWITCH (6). Lift theground by moving the GROUND LIFT SWITCH (6) to the right, turn the powerback on and listen to determine which position will provide a signal free ofbackground noise and hum. Keep the GROUND LIFT SWITCH (6) in theground position if the noise level remains the same in either position.CAUTION: DO NOT TERMINATE THE AC GROUND ON THE POWER AMPLIFIER IN ANY WAY.TERMINATION OF THE AC GROUND CAN BE HAZARDOUS.SPECIFICATIONS:X-01 X-02 X-03 X-04Output Power EIA:.................................................1kHz @ 1% THD, WrmsBoth Channels Driven 8Ω 85 140 200 200Both Channels Driven 4Ω 110 200 300 300Mono Bridge 8Ω 220 400 600 600Dynamic Headroom, dB:At8Ω 1.4 1.5 1.6 1.6At4Ω 1.9 2.0 2.2 2.2Frequency Response..........................................................30 Hz - 50 kHzTotal Harmonic Distortion.............Iess than 0.05%, typical 0.02% @ 1 kHzSignal to Noise ratio.............................100 dB below rated power @ 8ΩDamping factor.......................................................greater than 200 @ 8ΩSlew rate........................................................................................20 V/μSVoltage gain, dB 28 30 32 32Input Sensitivity (for rated power at 8Ω)........................................1 VrmsInput Impedance Unbalanced............................................................10 kWInput Impedance Balanced................................................................20 kWPower consumption, W 500 800 1200 1200(at rated power at 4Ω, both channels driven)AC Power Requirements..........110-120 V / 60 Hz and 220-240 V / 50 HzIndicators:...............................................................................1 Power LED...............................................................................................1 Protect LED........................................1 Signal LED per Channel (for X-01, X-02, X-03)..............................................................1VU-meter per Channel (for X-04)Cooling........................................................ Fan, Front-to-Rear Forced AirProtection:.............................................Short Circuit, DC, Thermal Cut-off,...............................................................Sub/Ultrasonic Frequency Filters,.......................................Turn-on Delay, Main Fuse, Secondary DC FusesConnectors:Balanced/Unbalanced lnputs.............................................1/4" Jacks, XLRSpeaker Outputs .....................................3-Way Binding Posts, 1/4" JacksDimensions:X-01, X-02, X-03.................19"W x 10.75"D x 3.5"H (483 x 273 x 89 mm)X-04.................................19"W x 10.75"D x 5.25"H (483 x 273 x 133 mm)Weight 16.3 Ibs 17.8 Ibs 20.2 Ibs 21.6 Ibs7.4 kg 8.1 kg 9.2 kg 9.8 kgSPECIFICATIONS AND DESIGN ARE SUBJECT TO CHANGEWITHOUT NOTICE FOR PURPOSE OF IMPROVEMENT.IN THE USA: IF YOU EXPERIENCE PROBLEMS WITH THIS UNIT, PLEASE CALL 1 (732) 738-9003 FORGEMINI CUSTOMER SERVICE. DO NOT ATTEMPT TO RETURN THIS EQUIPMENT TO YOUR DEALER.