INTRODUCTION:

Congratulations on purchasing a GEMINI model PA-7000rack mountable preamplifier. This state of the art unit includes the latest features backed by a three year warranty. Prior to use, we suggest that you carefully read all the instructions.

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.

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.

CONNECTION.

Be sure the POWER (1) switch is in the OFF position. All connections must be made with all equipment OFF. For best sound, use only high quality RCA cables when hooking up equipment to the PA-7000. Make sure that all cables are pushed in securely. Connect the OUTPUT LINE

(22)jacks (TRS and XLR) of the PA-7000to your amplifier(s). Plug your microphone into the MIC (5) jack on the front panel of the PA-7000. Plug your headphone into the PHONE (11) jack on the front panel. Plug your turntable into the PHONO (16) jacks and attach the ground wire from the turntable to the GND (23) screw. Plug your CD player into the CD (17) jacks. Plug your tuner into the TUNER (18) jacks. Any other line level output device (such as a mixer) may be connected to the AUX

(19)jacks. You will require two sets of RCA cables to connect your tape deck to the PA-7000. Use one set of RCA cables to connect the tape deck’s playback or output jacks to the PLAY (20) jacks on the rear of the PA-702. Use the other set of RCA cables to connect the tape deck’s record or input jacks to the REC (21) jacks on the PA-7000.

NOTE: ANY LINE LEVEL DEVICE CAN BE CONNECTED TO THE PLAY (20) JACKS AND THEN CAN BE ACCESSED BY THE TAPE MONITOR (3) BUTTON.

OPERATION:

1.POWER: Once you have made all source connections to the PA-7000, and you have made sure that the VOLTAGE SELECTOR (24) switch is in the proper position, plug the power cord into a power source and press the POWER (1) button (LED lights).

2.INPUT SELECTION: The INPUT SELECTION (2) switch determines which input source goes through the PA-7000 to the amplifier. If the PHONO position is selected on the INPUT SELECTION (2) switch, then the source connected to PHONO (16) jack on the back panel will be selected. If the CD position is selected, then the source connected to the CD (17) jack on the back will be selected.

3.TAPE MONITOR: Pressing the TAPE MONITOR (3) button (the LED is lit) allows you to hear the playback signal of your tape deck or whatever you have connected to the PLAY (20) jacks on the rear panel. Pressing the TAPE MONITOR (3) button a second time (the LED is off), disengages the tape monitor circuit.

4.MIC LEVEL: The MIC LEVEL (4) control adjusts the volume of the microphone.

5.MIC JACK: 1/4" microphone input jack (5).

6.VOLUME: Overall volume is controlled by the VOLUME (6) control.

7.BALANCE: Use this control to adjust the relative levels of the left and right channels. The 12 o’clock position is the point of equal BALANCE (7).

8.TREBLE: The TREBLE (8) control adjusts the relative level of the high frequencies in the sound.

9.MID: The MID (9) control adjusts the relative level of the mid range frequencies in the sound.

10.BASS: The BASS (10) control adjusts the relative level of the low frequencies in the sound.

11.PHONE JACK: 1/4" headphone input jack (11).

12.MONO: When the MONO (12) button is activated (LED is lit), the two stereo channels are blended together to produce monophonic sound. This blend minimizes rumble and surface noise in old monophonic records. Push the button a second time (LED goes out) to get back to stereo mode.

13.MUTE: Pushing this button reduces the volume of the amplifier output signal by approximately 20 dB. Pressing the button a second time removes the muting. The MUTE (13) has no effect on the microphone volume.

14.LOW CUT: The output from a turntable usually contains strong but inaudible impulses at infrasonic frequencies (below 20Hz) due to disc warps, stylus/tonearm resonance, and vibrations that reach the turntable. If these are amplified at full strength, they may waste amplifier power and muddy the sound. The LOW CUT FILTER (14) attenuates these unwanted signals.

15.LOUDNESS: When pressed, the LOUDNESS (15) button engages a “loudness compensation” circuit which, at low-to-medium volume, boosts the bass and treble response.

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 unit on, listen to the system in idle mode (no signal present) with the ground applied (the GROUND LIFT SWITCH (25) in the left position).

2.Then turn the power off before moving the GROUND LIFT SWITCH (25). 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 UNIT IN ANY WAY. TERMINATION OF THE AC GROUND CAN BE HAZARDOUS.

SPECIFICATIONS:

INPUTS SENSITIVITY/IMPEDANCE

 

Mic

1mV / 3 Kohms

Phono

3mV / 47 Kohms

Tape,Tuner,CD,Aux

150mV / 22 Kohms

OUTPUT/IMPEDANCE

 

Tape Rec

150mV / 3 Kohms

Pre Output

max. 11V / 1 Kohms

TOTAL.................................................................................................................................................HARMONIC DISTORTION

less than 0.02%

Mic

Phono

less than 0.04%

Tape,Tuner,CD, Aux

less than 0.01%

SIGNAL................................................................................................................................................TO NOISE RATIO

more than 70dB

Mic

Phono

more than 90dB

Tape,Tuner,CD, Aux

more than 100dB

GENERAL

5Hz - 30 KHz +0, - 3dB

Frequency Response

Bass

+/-12dB at 100Hz

Midrange

+/-9dB at 1KHz

Treble

+/-12dB at 10KHz

Loudness

+9/0/+9dB at 100/1K/10KHz

Mute

-20dB

Power

120V or 230V, 50/60Hz

Power Consumption

15W

Dimensions

483mm x 45mm x 248 mm

Weight

19" x 1.75" x 9.75"

4 kg (9 lbs.)

(3)

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Gemini PA-7000 manual Introduction, Connection, Operation, Using the Ground Lift Switch, Specifications
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PA-7000 specifications

The Gemini PA-7000 is an advanced portable audio mixer, designed to meet the needs of musicians, sound engineers, and DJs alike. With its compact design and robust feature set, this mixer has garnered attention in the pro audio world for its versatility and performance.

One of the standout features of the Gemini PA-7000 is its 7-channel configuration, which includes multiple XLR and 1/4-inch inputs. This allows users to connect a variety of sound sources, including microphones, instruments, and playback devices. Each channel is equipped with a 3-band EQ, enabling precise tonal adjustments for optimal sound quality.

An essential aspect of the PA-7000 is its built-in digital effects processor, which offers a selection of effects such as reverb, delay, and echo. These effects can be applied to individual channels or the main output, adding depth and creativity to live performances. Furthermore, the mixer includes a dedicated effects send/return loop, ensuring efficient integration with external effects processors.

In terms of connectivity, the PA-7000 features multiple outputs, including balanced XLR main outputs and unbalanced 1/4-inch monitor outputs. Additionally, the inclusion of USB connectivity allows for seamless integration with computers for recording or playback purposes, making it a versatile choice for both live sound and studio applications.

The PA-7000 also incorporates a built-in Bluetooth receiver, enabling users to stream audio wirelessly from compatible devices. This feature is especially useful for DJs or performers who want to incorporate pre-recorded tracks or play backing tracks without needing a physical connection.

On the characteristics front, the Gemini PA-7000 boasts a sleek and durable build, designed for portability without sacrificing performance. Its intuitive layout allows for quick adjustments during live performances, and the brightly lit, user-friendly interface ensures visibility in dimly lit environments.

In terms of power management, the PA-7000 can be powered via an AC adapter or with a rechargeable battery, adding to its versatility for outdoor events or venues without easy access to power sources.

Overall, the Gemini PA-7000 stands out as a well-rounded audio mixer that combines essential features, cutting-edge technology, and portable design. Whether for live performances, recording sessions, or events, this mixer is equipped to handle a wide array of audio applications, making it a valuable asset for any audio professional or enthusiast.
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