PS4 - DJ Equipment GEMINI - Free user manual and instructions

Product Type	DJ Mixer
Model	PS4
Brand	Gemini
Dimensions (W x D x H)	10.5 x 8.5 x 2.5 inches
Weight	3.2 lbs
Power Supply	12V DC, 500mA (adapter included)
Number of Channels	2
Crossfader	Replaceable, 45mm
EQ Controls	3-band EQ per channel (High, Mid, Low)
Inputs	2x RCA Line, 1x 1/4" Mic
Outputs	2x RCA Master, 1x 1/4" Headphone
Frequency Response	20 Hz – 20 kHz
Signal-to-Noise Ratio	>90 dB
Cleaning Instructions	Wipe with dry, soft cloth; avoid liquids and abrasives.
Safety Precautions	Do not expose to moisture or extreme temperatures. Unplug when not in use.
Spare Parts Availability	Crossfader, knobs, and power supply available from authorized dealers.
Repair Information	Contact Gemini support or authorized service center.
General Notes	Ideal for mobile DJs and small venues.

Frequently Asked Questions - PS4 GEMINI

How do I connect my Gemini PS4 mixer to my computer?

The Gemini PS4 is an analog mixer and requires an external audio interface to connect to a computer. Use RCA cables from the Master output to the interface's input.

What is the correct power supply for the PS4?

Use the included 12V DC, 500mA adapter. Using an incorrect adapter may damage the unit.

How do I replace the crossfader on the PS4?

Remove the faceplate screws, gently lift the plate, desolder the old crossfader, and solder in a new one. Alternatively, use a compatible plug-in fader if available.

No sound from the master output. What should I check?

Verify all cables are securely connected, the power is on, and the channel faders and master volume are up. Also check that the input source is active.

How do I clean my Gemini PS4 mixer?

Unplug the unit and wipe surfaces with a dry, lint-free cloth. Do not use water, solvents, or abrasive cleaners. For stubborn dirt, slightly dampen cloth and then dry.

Can I use the PS4 with turntables?

Yes, if your turntables have a built-in preamp or you use a phono preamp. The PS4 has line-level inputs only.

What is the headphone output impedance?

The headphone output is designed for headphones with impedance 32 ohms or higher. Lower impedance may cause distortion at high volume.

How do I adjust the EQ on the PS4?

Each channel has three EQ knobs labeled High, Mid, and Low. Turn clockwise to boost, counterclockwise to cut. The center position is flat.

Is the PS4 compatible with pro DJ software?

The PS4 is an analog mixer and does not have a built-in sound card. To use with DJ software, you need an external audio interface and a mixer with enough channels.

Where can I find a service manual for the PS4?

Service manuals are available from Gemini's official website or by contacting their support team. Some are also shared on audio forums.

USER MANUAL PS4 GEMINI

PS4

PROFESSIONAL DJ MIXER

gemini® DJ

WWW.GEMINIDJ.COM

ENGLISH

Warning 3

Unit overview 4

Introduction 5

Connections 5

Controls 6

Specifications 7

Warranty 26

Product Registration 27

ESPAÑOL

Advertencias 9

Diagramas 10

Introducción 11

Connections 11

Controles 12

CAUTION: This product satisfies FCC regulations when shielded cables and connectors are used to connect the unit to other equipment. To prevent electromagnetic interference with the electric appliance such as radios and televisions, uses shielded cables and connectors for connections.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

The lightening flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that maybe of sufficient magnitudeto constitute riskofelectricshocktopersons.

READ INSTRUCTIONS: All the safety and operating instructions should be read before the product is operated.

RETAIN INSTRUCTIONS: The safety and operating instructions should be retained for future reference.

HEED WARNINGS: All warnings on the product and in the operating instructions should be adhered to.

FOLLOWINSTRUCTIONS: Alloperating and use instruction should be followed.

CLEANING: The product should be cleaned only with a polishing cloth or a soft dry cloth. Never clean with furniture wax, benzine, insecticides or other volatile liquids since theymaycorrodethecabinet.

ATTACHMENTS: Do not use attachments not recommended by the product manufacturer as they may cause hazards.

WATER AND MOISTURE: Do not use this product near water, for example, near a bathtub, wash bowl, kitchen sink, or laundry tub; in a wet basement; or near a swimming pool; and the like.

ACCESSORIES: Do not place this product on an unstable cart, stand, tripod, bracket, or table. The product may fall, causing serious injury to a child or adult, and serious damage to the product. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer, or sold with the product. Any mounting of the product should follow themanufacturer'sinstructions,andshoulduseamountingaccessoryrecommendedbythemanufacturer.

CART: A product and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the product and cart combination to overturn.SeeFigureA.

VENTILATION: Slots and openings in the cabinet are provided for ventilation and to ensure reliable operation of the product and to protect it from overheating, and these openings must not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other similar surface. This product should not be placed in a built-in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer's instructions have been adhered to.

POWER SOURCES: This product should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supply to your home, consult your product dealer or local power company.

LOCATION: The appliances should be installed in an astable location.

NON-USE PERIODS: The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time.

GROUNDINGORPOLARIZATION:

- If this product is equipped with a polarized alternating current line plug (a plug having one blade wider than the other), it will fit into the outlet only one way. This is a safety feature. If you are unable to insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized plug.

• If this product is equipped with a three-wire grounding type plug, a plug having a third (grounding) pin, it will only fit into a grounding type power outlet. This is a safety feature. If you are unable to insert the plug into the outlet, contact your electrician to replace your obsolete outlet. Donotdefeatthesafetypurposeofthegroundingtypeplug.

Fig.A

POWER-CORD PROTECTION: Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, conveniencereceptacles, and the point where they exit from the product.

OUTDOOR ANTENNA GROUNDING: If an outside antenna or cable system is connected to the product, be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built-up static charges. Article 810 of the National Electrical Code, ANSI/NFPA 70, provides information with regard to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna-discharge unit, connectiontogroundingelectrodes,andrequirementsforthegroundingelectrode.SeeFigureB.

LIGHTNING: For added protection for this product during a lightening storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnecttheantennaorcablesystem. This will prevent damage to the product duetolightening and power-lines surges.

POWER LINES: An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from touchingsuchpowerlinesorcircuitsascontactwiththemmightbefatal.

OVERLOADING: Do not overload wall outlets, extension cords, or integral convenience receptacles as this can result in a risk of fire or electric shock.

OBJECT AND LIQUID ENTRY: Never push objects of any kind into this product through openings as they may touch dangerous voltage points orshort-outpartsthatcouldresultinafireorelectricshock.Neverspilliquidofanykindontheproduct.

SERVICING: Do not attempt to service this product yourself as opening or removing covers may expose you to dangerous voltage or other hazards. Referallservicingtoqualifiedservicepersonnel.

Fig.B

DAMAGE REQUIRING SERVICE: Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions

- Whenthepower-supplycordorplugisdamaged.

- Ifliquidhasbeenspilled,orobjectshavefallenintotheproduct.

- If the product has been exposed to rain or water.

- If the product does not operate normally by following the operating instructions. Adjust only those controls that are covered by the operating instructions as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to its normal operation.

- If the product has been dropped, it is damaged in any way.

- Whentheproductexhibitsadistinctchangeinperformance,thisindicatesaneedforservice.

REPLACEMENT PARTS: When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics astheoriginal part. Unauthorized substitutions may result infire, electric shock, or other hazards.

SAFETY CHECK: Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition.

WALLORCEILINGMOUNTING: The product should not be mounted to a wall or ceiling.

HEAT: The product should be situated away from heat sources such as radiators, heat registers, stoves, or other products (including amplifiers) that produce heat.

TOP VIEW

REAR VIEW

FUNCTIONS

① Power On/Off
② Power Input
③ Master RCA Output
④ Record RCA Output
⑤ Headphone Input
⑥ Mic Input
⑦ RCA Phono/Line Inputs
⑧ Balanced XLR Outputs
⑨ Grounding screw
⑩ Channel Source Select Switch
⑪ Channel Fader
⑫ Gain Rotary Control
⑬ High EQ Rotary Control
⑭ Mid EQ Rotary Control
⑮ Low EQ Rotary Control
16 Channel Cue Assign
⑰ Cue Volume Rotary
⑱ Cue/PGM Mix Rotary
19 Cross fader
20 Cross fader Controls
21 Master Volume Rotary
22 Mic Volume Rotary
23 Mic High EQ Rotary Control
24 Mic Low EQ Rotary Control
25 VU Meter
②6 VU Meter Toggle
⑳ Mic Talkover Switch

Congratulations on your purchase of a Gemini PS4 12.5" 4 channel stereo mixer. This state-of-the-art mixer features the latest technological advances and is backed by a 1 year warranty, excluding the cross fader. The cross fader is backed by a separate 90 day warranty. Prior to use we suggest that you carefully read all the instructions.

CAUTION

1. All operating instructions should be read before using this equipment.
2. To reduce risk of electrical shock, do not open the unit. Please refer servicing to a Gemini-qualified service technician.
3. Do not expose this unit to direct sunlight or a heat source such as a radiator or stove.
4. Dust, dirt and debris can interfere with the performance of this unit. Make an effort to keep the unit away from dusty, dirty environments, and cover the unit when it is not in use. 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 MOIS-TURE.
7. DO NOT USE ANY SPRAY CLEANER OR LUBRICANT ON ANY CONTROLS OR SWITCHES.

FEATURES

• 12.5" 4 Stereo channel mixer
- 5 line, 2 Phono inputs 2 microphone jacks 1/4" (6.35mm)
• 3 band rotary line EQ with cut feature & rotary gain channel control
• Separate Cue Switch for each channel
• Rotary cue volume, CUE/PGM rotary knob
• VU meter on each channel
- Talkover switch
- Removable face plate for user replaceable Rail Glide cross fader

CONNECTIONS

Ensure that the POWER SWITCH (1) is in the OFF position prior to making any connections. This unit comes with a power cord. Plug into the rear panel POWER CORD (2) jack before plugging it into a proper power source.

1. The PS4 has 3 stereo outputs located on the rear panel:

2. The MASTER RCA OUTPUT (3) connects the mixer to your main amplifier using standard audio cables with RCA-type connectors.

3. The REC (4) output jacks can be used to connect the mixer to the record input of your recording unit, thus enabling you to record your mix with RCA cables.

4. The BALANCED XLR OUTPUT (8) connects the mixer to your main amplifier using XLR cables providing a balanced connection controlled by the MASTER VOLUME (21) rotary.

5. Headphones may be plugged into the front panel-mounted HEADPHONE (5) 1/4" jack.

6. Microphones may be plugged into the rear panel-mounted MICROPHONE (6) 1/4" jack.
7. The PS4 has 2 PHONO (PH/LN) and 5 LINE RCA INPUTS each channel has two corresponding lines and can be chosen via the CHANNEL SOURCE SELECT SWITCH (10). When switched to the PH position you may use any Turntable with a magnetic cartridge, remember to connect your ground wire (see GROUNDING SCREW) or there may be a system hum. When the switch is in the LN position you may connect any line level device as described before (MP3, CD, etc).

NOTE: CONNECTING A LINE LEVEL DEVICE TO A PH INPUT MAY CAUSE THAT MIXER CHANNEL TO OVERLOAD AND OR DISTORT.

1. When using (a) turntable(s), you will need to ground the RCA cable(s) by screwing in the grounding fork(s) to the GROUNDING SCREW (9) located in the rear panel of the PS4 mixer. Attach each PH ground line to the GROUND THUMB SCREW (9).

CONTROLS

1. Once all of your connections have been made in the rear panel, turn on the mixer by pressing the POWER SWITCH(1).

2. The CHANNEL SOURCE SELECTOR (10) switches allow you to choose which input will be controlled by that channels corresponding volume FADER. For example on CHANNEL (1) the source selector allows you to choose between PHONO 1 and LINE 1, on CHANNEL (2) the source selector will let you choose between PHONO 2 and LINE 2 and on CHANNEL (3) you can choose between LINE 3 and the LINE 4 input, and on CHANNEL (4) you can choose between LINE 5 and MIC 2.

3. The CHANNEL ROTARY GAIN (12) allows you to boost the signal of each individual channel depending on how low or high its input level is. The CHANNEL FADER (11) allows you to set the corresponding channel's volume in the mix.

NOTE: FOR OPTIMAL PERFORMANCE, BEGIN PROGRAM MIX WITH ROTARY GAIN (8) CONTROLS SET TO MINIMUM (ROTATE IT COUNTERCLOCKWISE TO THE COUNTER CLOCKWISE POSITION). MAKE ALL ADJUSTMENTS IN SOUND OUTPUT WITH THE USE OF YOUR CHANNEL SLIDE CONTROLS AND MASTER (11) VOLUME ROTARY CONTROLS. THIS WILL PREVENT SIGNAL OVERLOAD AND DECREASE DISTORTION. ONCE YOU HAVE MODIFIED YOUR SOUND AND WOULD LIKE TO INCREASE THE OUTPUT OF YOUR SOUND, THEN YOU MAY ADJUST THE ROTARY GAIN CONTROL IF NEEDED.

1. The 3 BAND EQUALIZER adjust the tone of each CHANNEL by giving you a choice 3 frequencies (BANDS) to adjust, from LOW (15), MID (14) and HIGH (13), you can use the adjustment knobs to higher or lower the 3 separate frequencies till the sound of the music program is appropriate for your listening environment.

2. CUE: By connecting a set of headphones to the HEADPHONE (5) jack, you can monitor any or all channels.

The CHANNEL CUE ASSIGN (16) allows you to choose which channel you wish to monitor in your headphones by pressing this switch on any channel you will be able to listen to that channels input in your headphones. Multiple CHANNEL CUE ASSIGNs can be pressed to monitor more than on input at a time.

Use the face panel located rotary CUE VOLUME

CONTROL (17) to adjust the CUE volume without changing the overall mix. By turning the face panel located CUE/MIX/PGM ROTARY CONTROL (18) counter clockwise you will be able to monitor the assigned cue signal. Slowly turning the control clockwise to middle position allows you to monitor CUE MIX with PGM. Moving the control clockwise to the right allows you to monitor PGM (Main) output.

1. CROSS FADER SECTION: The CROSS FADER (19) allows you to mix from one source to another. The CROSS FADER (19) in your unit is removable and if the need arises can be easily replaced.

NOTE: DO NOT APPLY PRESSURE WHILE USING THE CROSS FADER (19). LIGHTLY GLIDE THE CROSSFADER BACK AND FORTH. PRESSING DOWN ON THE CONTROLS CAN BEND CONTACTS AND CAUSE A LOSS OF SOUND.

1. OUTPUT SELECTION CONTROL: Once you are comfortable with the sound level of your music you may adjust the volume with the MASTER (21) rotary control.

2. MIC SECTION: Plug your main MIC into either of the MIC 1/4" inputs (6) located on the top or rear panel. You can use the Mic Gain Control (22) as well as the HIGH (23) and LOW (24) controls to adjust the volume and tone of the microphone signal. The MIC TALKOVER SWITCH (27) allows you to quickly attenuate the main output so the microphone can be heard over the main music program.

3. VU METER: The PS4 has a dual mode VU ME-TER (25) that allows you to monitor the decibel levels of CUE and PGM or LEFT and RIGHT stereo levels of the MASTER output. With the VU MODE SWITCH (26) you may monitor the output level of the CUE and PGM when the switch is UP. When this mode is engaged the CUE will be located on the left of the VU METER, while the PGM will be located on the RIGHT. Or you can monitor the LEFT and RIGHT stereo decibel levels of the MASTER OUTPUT when the switch is in the DOWN position.

The PS4 also has VU METERs on each channel that allows you to monitor the decibel levels of its input.

CROSS FADER REPLACEMENT

1. UNSCREW THE OUTSIDE FACE PLATE SCREWS ON THE LOWER HALF OF THE MIXER. REMOVE THE FADER CAPS AND FACE PLATE.
2. UNSCREW THE FADER (B) SCREWS. DO NOT TOUCH INSIDE SCREWS (C). CAREFULLY REMOVE OLD CROSS FADER ANDUNPLUG CABLE (D).
3. PLUG IN THE NEW CROSS FADER INTO CABLE (D) AND PLACE BACK INTO MIXER.
4. SCREW THE CROSS FADER TO MIXER WITH THE FADER PLATE SCREWS (B).
5. REPLACE THE LOWER HALFFACE PLATE

INPUTS

Phono....3 mV, 47 KOhm

Line....150 mV, 27 KOhm

MIC....1.5 mV, 1 KOhm Balanced

OUTPUTS

Max.... 20V Peak-to-Peak

Rec....225 mV, 5 KOhm

GENERAL

Frequency Response.....20Hz - 20KHz +/- 2 dB

Distortion....< 0.02%

S/N Ratio...... Better Than 85 dB

Headphone Impedance.... 32 Ohm

Power Source...... AC 15V 500mA

Dimensions.... 10" x 3.3" x 12" .... (254 x 85 x 356 mm)

Weight.... 10.5 lbs (4.76 kg)

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTIFICATION FOR IMPROVEMENT.

ESPAÑOL

MANUEL D'INSTRUCTIONS

gemini®

AVANT TOUTE UTILISATION DE L'APPAREIL, MERCI DE PRENDRE CONNAISSANCE DES INSTRUCTIONS D'UTILISATION & DE SECURITE! RISQUE DE CHOC ÉLECTRIQUE, NE PAS OUVRIR!

RISQUE DE CHOC LECTRIQUE NE PAS OUVRIR!

1. All operating instructions should be read before using this equipment.
2. To reduce risk of electrical shock, do not open the unit. Please refer servicing to a Gemini-qualified service technician.
3. Do not expose this unit to direct sunlight or a heat source such as a radiator or stove.
4. Dust, dirt and debris can interfere with the performance of this unit. Make an effort to keep the unit away from dusty, dirty environments, and cover the unit when it is not in use. 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 MOIS-TURE.
7. DO NOT USE ANY SPRAY CLEANER OR LUBRICANT ON ANY CONTROLS OR SWITCHES.

CARACTERISTIQUES

Warranty and Repair:

All GCI products are designed and manufactured to the highest standards in the industry. With proper care and maintenance, your product will provide years of reliable service.

LIMITED WARRANTY

A. GCI warrants its products to be free from defects in materials and workmanship for One (1) year from the original purchase date. Exceptions: Laser assemblies on CD Players, cartridges, and crossfaders are covered for 90 days.

B. This limited warranty does not cover damage or failure caused by abuse, misuse, abnormal use, faulty installation, improper maintenance or any repairs other than those provided by an authorized GCI Service Center.

C. There are no obligations of liability on the part of GCI for consequential damages arising out of or in connection with the use or performance of the product or other indirect damages with respect to loss of property, revenues, of profit, or costs of removal, installation, or reinstallation. All implied warranties for GCI, including implied warranties for fitness, are limited in duration to One (1) year from the original date of purchase, unless otherwise mandated by local statutes.

RETURN/REPAIR

A. In the U.S.A., please call our helpful Customer Service Representatives at [phone], and they will be happy to give you a Return Authorization Number (RA#) and the address of an authorized service center closest to you.

B. After receiving an RA#, include a copy of the original sales receipt, with defective product and a description of the defect. Send by insured freight to: GCI Sound Products Corp, and use the address provided by your customer service representative. Your RA# must be written on the outside of the package, or processing will be delayed indefinitely!

C. Service covered under warranty will be paid for by GCI and returned to you. For non-warrantied products, GCI will repair your unit after payment is received. Repair charges do not include return freight. Freight charges will be added to the repair charges.

D. On warranty service, you pay for shipping to GCI, we pay for return shipping within the continental United States, Alaska, Hawaii, Puerto Rico, Canada, Bahamas, and the Virgin Islands will be charged for freight.

E. Please allow 2-4 weeks for return of your product. Under normal circumstances your product will spend no more than 10 working days at Gemini. We are not responsible for shipping times.

GCI Technologies Corp.

Worldwide Headquarters

280 Raritan Center Dr

Edison, NJ 08837 USA

Tel: [phone]

Fax: [phone]

IN THE UNITED KINGDOM

In the event that you need service on your GCI product under warranty, simply write a letter describing the problem, along with your contact information. Make sure to enclose a copy of your receipt for proof of warranty information. A return number is not required. You will be responsible for shipping charges to Gemini UK, and Gemini UK will pay to return the unit to you if it is considered under warranty.

GCI Technologies Ltd

Unit 44 Brambles Enterprise Centre

Waterberry Drive

Waterlooville

Hampshire, P07, 7TH, UK

Tel: [phone]

Fax: [phone]

EN ESPAÑA

80995 München, Munich, Germany

T: [phone]

F: [phone]

Register your product online at www.geminidj.com to be eligible for great prize giveaways! If you do not have Internet access, fill out the form included and mail it to the appropriate address listed previously.

First and Last Name

Address (Number and Street)

Apartment Number

City and State or Province

Country

Zip Code or Postal Code

Email Address

Telephone Number

Date of Birth

Date of Purchase

Purchase Price (Excluding Tax)

City of Purchase

Model Number (Example: CDT-05)

Serial Number (back of unit)

IN THE USA: IF YOU ARE EXPERIENCING PROBLEMS WITH THIS UNIT CALL 1-732-346-0061 FOR GCI TECHNOLOGIES CUSTOMER SERVICE. DO NO ATTEMPT TO RETURN THIS EQUIPMENT TO YOUR DEALER.

Parts of the design of this product may be protected by worldwide patents. Information in this manual is subject to changes without notice and does not represent a commitment on the part of the vendor.

GCI Technologies Corp. shall not be liable for any loss or damage whatsoever arising from the use of information or any error contained in this manual.

No part of this manual may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, electrical, mechanical, optical, chemical, including photocopying and recording, for any purpose without the express written permission of GCI Technologies Corp.

It is recommended that all maintenance and service on this product is performed by GCI Technologies. Corp or its authorized agents. GCI Technologies will not accept liability for loss or damage caused by maintenance or repair performed by unauthorized personnel.

Worldwide Headquarters • 280 Raritan Center Dr. Edison, NJ 08837 • USA

Tel: [phone] • Fax: [phone]

Gemini Sound Products Unit 44

Brambles Enterprise Centre

Waterlooville P07 7TH, UK

Tel: [phone]

Fax: [phone]

GCI Technologies S.A.

Caspe, 172 - 5º A

08013 Barcelona, Spain

Tel: [phone]

Fax: [phone]

GCI TECHNOLOGIES

© GCI Technologies Corp. 2011 All Rights Reserved.