GEMINI GPA-3000 User Manual [fr]
GPA Series
PROFESSIONAL POWER AMPLIFIERS
VERST VERSTÄRKER ÄRKER PROFESSIONELLER
AMPLIFICADOR DE PODER PROFESIONAL
AMPLIFICATEUR DE PUISSANCE PROFESSIONNEL
In the USA: If you experience problems with this unit, please go to http://www.geminidj.com/support.html or call 1-732-738-9003 for Gemini Customer Service. Do not attempt to return this equipment to your dealer. Gemini stands behind their products with an industry-leading 3 year limited warranty on all audio products. For larger images & detailed specs visit our website @ http://www.geminidj.com. WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS OR OMISSIONS. WE RESERVE THE RIGHT TO CHANGE WITHOUT NOTICE. Parts of the design of this product may be protected by worldwide patents. Information in this
manual is subject to change without notice and does not represent a commitment on the part of the vendor. Gemini Sound Products 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 Gemini Sound Products Corp. It is recommended that all maintenance and service on this product is performed by Gemini Sound Products Corp. or its authorized agents. Gemini Sound Products Corp. will not accept liability for loss or damage caused by maintenance or repair performed by unauthorized personnel.
USA:
Gemini Sound Products Corp.
Worldwide Headquarters
120 Clover Place
Edison, New Jersey 08837
Ph: 732.738.9003
Fax: 732.738.9006
Germany:
Gemini Sound
Products GmbH
Liebigstrasse 16
85757 Karlsfeld
Ph: + 49 8131 39171-0
Fax: + 49 8131 39171-9
Spain:
Gemini Sound Products S.A.
Rosellon 516 local
08026 Barcelona
Ph: + 34 93 436 37 00
Fax: + 34 93 347 69 61
UK:
Gemini Sound Products LTD
Unit C4 Hazleton
Industrial Estate,
Waterlooville P08 9JU
Ph: +44 (0)87 087 00880
Fax: +44 (0)87 087 00990
France:
GSL France
1, Allée d' Effiat,
Parc de l'événement
F-91160 Longjumeau
Ph: + 33 1 69 79 97 70
Fax: + 33 1 69 79 97 80
Worldwide Offices
<2>
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 electric appliances such as radios
and televisions, use 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 lightning 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 may be of sufficient magnitude
to constitute a risk of electric shock to persons.
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.
FOLLOW INSTRUCTIONS: All operating and use instructions 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 they may corrode the cabinet.
ATTACHMENTS: Do not use attachments not recommended by the product manufacturer as they may cause hazards.
WATER & 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 the manufac-
turer's instructions, and should use a mounting accessory recommended
by the manufacturer.
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. S
EE FIGURE
A.
VENTILATION: Slots and openings in the cabinet are provided for ventila-
tion 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 builtin 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 appliance should be installed in a stable 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.
GROUNDING OR POLARIZATION:
- 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. Do not
defeat the safety purpose of the grounding type plug.
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, convenience
receptacles, 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 antennadischarge unit, connection to grounding electrodes, and requirements for
the grounding electrode. S
EE FIGURE B.
LIGHTNING: For added protection for this product during a lightning
storm, or when it is left unattended and unused for long periods of time,
unplug it from the wall outlet and disconnect the antenna or cable system.
This will prevent damage to the product due to lightning and power-line
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 touching
such power lines or circuits as contact with them might be fatal.
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 & LIQUID ENTRY: Never push objects of any kind into this product through openings as they may touch dangerous voltage points or shortout parts that could result in a fire or electric shock. Never spill liquid of
any kind on the product.
SERVICING: Do not attempt to service this product yourself as opening or
removing covers may expose you to dangerous voltage or other hazards.
Refer all servicing to qualified service personnel.
DAMAGE REQUIRING SERVICE: Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following
conditions:
- When the power-supply cord or plug is damaged.
- If liquid has been spilled, or objects have fallen into the product.
- 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 or damaged in any way.
- When the product exhibits a distinct change in performance, this indicates a need for service.
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 as the original part. Unauthorized substitutions may result in fire, 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.
WALL OR CEILING MOUNTING: 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.
DISPOSAL: This product shall not be treated as household waste. Instead
it shall be handed over to the applicable collection point for the recycling
of electrical and electronic equipment. By ensuring this product is disposed of correctly, you will help prevent potential negative consequences
for the environment and human health, which could otherwise be caused
by inappropriate waste handling of this product. The recycling of materials
will help to conserve natural resources. For more detailed information
about recycling of this product, please contact your local city office, your
household waste disposal service or the shop where you purchased the
product.
CAUTION
PLEASE READ BEFORE USING APPLIANCE,
IMPORTANT WARNING & SAFETY INSTRUCTIONS!
RISK OF ELECTRICAL SHOCK DO NOT OPEN!
<3>
GPA Series
1
3
2
4
6
7
8
9
10
11
12
13
15
14
10
9
6
54
Split cables demonstrate numerous possible methods of connection & is not an exact depiction of the wiring set-uup.
Power cable & electrical outlet shown are for US standards only
. Other countries will be provided with the appropriate power cable at authorized dealers.
The GPA line of power amplifiers has standard features that define the series. The GPA-4000 pictured on this page contains all of the same characteristics as the GPA-3000, GPA-2000, & GPA-1000. The only exception (aside from wattage) is that the GPA-1000 does not have a P
ROTECT LED (12).
Parts Checklist:
GPA Amplifier
Power Cord
Manual
1. Voltage Selector
2. Power Cord
3. AC in with Fuse
4. Speakon Outputs
5. Bridged Output Speakon
6. 1/4” Speaker Outputs
7. Ground Lift Switch
8. Operation Mode Switch
9. 1/4” TRS Balanced Inputs
10. XLR Balanced Inputs
11. Power Button
12. Protect LED
13. CH 1 Volume Rotary Control
14. CH 2 Volume Rotary Control
15. Decibel Meter
CH 2
CH 1
ch 2 bridge ch 1
<4>
GPA SERIES POWER AMPLIFIERS
INTRODUCTION:
Congratulations on purchasing a G
EMINI GPA SERIES POWER AMPLIFIER.
This state of-the-art power amplifier includes the latest features & is backed
by a THREE year limited warranty. Prior to use, we suggest that you carefully read all the instructions.
FEATURES:
- 30 Hz to 50 kHz frequency response, <0.05% THD (0.02% typical)
- High output power to drive professional loudspeakers without clipping
- Comprehensive protection circuitry with protect LED indicator
- ¼" TRS & XLR balanced/unbalanced inputs
- Speakon & ¼" speaker outputs
- Three modes of operation - stereo, parallel mono, and mono bridge
- Ground lift switch
- Decibel (dB) level meter with clip LEDs
- Subsonic and ultrasonic filters for better protection and more efficient
operation
- Aluminum extrusion heat sink design with directly mounted output transistors for no-fault operation
- Air guide with front-to-rear airflow and cooling fan for thermal stability
and reliability
CAUTIONS:
1. Read all operating instructions before using this equipment.
2. To reduce the risk of electrical shock, do not open the unit. There are
N
O USER REPLACEABLE PARTS INSIDE. Please contact the GEMINI SERVICE
D
EPARTMENT
or your authorized dealer to speak to a qualified G
EMINI SOUND
PRODUCTS technician.
3. In the USA: If you experience problems with this unit, please visit
HTTP://WWW.GEMINIDJ.COM/SUPPORT.HTML or call 1 (732) 738-9003 for GEMINI
CUSTOMER
SERVICE
. Do not attempt to return this equipment to your deal-
er.
4. Be sure to allow adequate front & rear ventilation to avoid possible heat
damage to your equipment.
5. Be sure that the power is O
FF before making connections. This will elim-
inate any chance of unexpected, loud audio transients that could damage
your speakers or amplifier.
6. Be sure that the power is O
FF when changing modes of operation &
when changing the position of the Ground Lift Switch.
7. D
O NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. Operators of electron-
ic equipment should in no way be in contact with water.
8.
NEVER DEFEAT THE GROUND PIN OR POLARIZED BLADES found on the 3-
prong power plug. Defeating this safety feature poses a risk of electrocution. If your outlets do not comply to these standards, contact an electrician.
9. D
O NOT USE ANY SPRAY CLEANER OR LUBRICANT ON ANY CONTROLS OR
SWITCHES.
CONNECTIONS:
1. Before plugging this unit into any outlet, make sure that the
VOLTAGE SELECTOR (1) switch is set to the proper voltage. To change the
selection, unscrew the hard plastic protective top with a Phillips head
screw driver. Then use a flat head screw driver to move the switch to the
proper selection (115 V/230 V).
2. Ensure that the P
OWER BUTTON (11) is in the OFF position prior to
making any connections. This unit comes with a POWER CORD (2).
Plug into the rear panel AC IN WITH FUSE (3) jack before plugging it
into a proper power source.
NOTE:
LOCATED BY THE AC IN WITH FUSE
(3) IS A 250 V FUSE TO
PROTECT AGAINST ELECTRICAL SURGES. TO REPLACE THE FUSE
, FIRST
DISCONNECT THE
P
OWER CORD
(2), AND PLACE A FLAT HEAD SCREW
-
DRIVER INTO THE GROOVE LOCATED INSIDE THE AC IN WITH FUSE (3)
&
DISLODGE THE FUSE
. REPLACE THE FUSE WITH ONLY A
250 V FUSE.
3. The GPA series has 2 sets of inputs:
- The XLR B
ALANCED I
NPUTS
(10) accept a line level signal.
With standard three prong XLR connections, prong 1 is the
ground, prong 2 is hot or positive (+) & prong 3 is cold or
negative (-).
- The ¼" TRS B
ALANCED INPUTS (9) accept a balanced as well
as an unbalanced line level signal. The unbalanced line uses a
standard tip-sleeve connection. The tip is positive & the sleeve is negative
or ground. The balanced line uses a tip-ring-sleeve connection. (TRS) The tip is hot
or positive (+), the ring is cold or negative (-), & the sleeve is shield or
ground.
4. The GPA series has 2 sets of outputs.
- The 2 S
PEAKON OUTPUTS (4) connect speakers to the
amplifier.
- The B
RIDGE OUTPUT SPEAKON (5) connects the
speakers to the amplifier only in M
ONO BRIDGED
OPERATION. This
mode allows the entire power of the amplifier to be used with one
mono channel. This mode of output is meant only for 8 ohms or
greater impedance.
- The ¼" S
PEAKER OUTPUTS (6) connect speakers to the
amplifier.
NOTE: M
AKE SURE THE POWER BUTTON (11) IS IN THE OFF POSITION BEFORE
MAKING ANY CONNECTIONS
.
OPERATIONS:
1. O
PERATION MODE SWITCH: The OPERATION MODE SWITCH (8) is
used to set the unit for STEREO mode, PARALLEL MONO mode or
MONO BRIDGE mode. Total speaker impedance must not be
lower than 4 Ohms per channel for S
TEREO & PARALLEL MONO modes, & 8
Ohm for MONO BRIDGE mode.
NOTE:
THE AMPLIFIER'S POWER BUTTON (11) MUST BE TURNED OFF WHEN CHANG-
ING MODES OF OPERATION.
- S
TEREO OPERATION: The unit has two channels for STEREO operation. Each
channel provides a separate & discrete signal at the speaker outputs
according to the signal received at the inputs. The following instructions
are for applications with 4 Ohm to 8 Ohm speakers of matched power ratings.
With the power OFF, set the OPERATION MODE SWITCH (8) to the STEREO
position.
With the power O
FF, connect your input cables to the CH 1 & CH 2 inputs
using the XLR BALANCED INPUTS (10) or ¼" TRS BALANCED INPUTS (9) of
each channel.
Connect the loudspeakers to either the CH 1 & CH 2 S
PEAKON (4) or
¼"SPEAKER
OUTPUTS
(6).
NOTE:
THE TOTAL SPEAKER LOAD MUST BE AT LEAST
4 OHMS PER CHANNEL
. IF YOU
TRY TO OPERATE AT A LOWER IMPEDANCE
, THE AMPLIFIER WILL GO INTO PROTECTION
MODE
& CEASE OPERATING UNTIL YOU CORRECT THE LOAD CONDITIONS.
With the CH 1 (13) & CH 2 (14) volume rotary controls set to zero (fully
counterclockwise), push the P
OWER BUTTON (11) to turn ON the amplifier.
Apply a signal to the input of the amplifier. The level of the input signal
should be as high as you will ever need it to be. This way, it will be as high
above the amplifier's noise floor as possible, ensuring an excellent performance & signal to noise ratio. Adjust the CH 1 (13) & CH 2 (14) volume
rotary controls for each channel to achieve the desired maximum listening
level, or the maximum output level of the speaker systems, whichever comes first.
NOTE:
WHEN THE CLIP LEDS LIGHT, THERE IS DISTORTION PRESENT IN THE AMPLI-
FIER'S OUTPUT SECTION. IF A CLIP LED LOCATED AT THE TOP OF THE VU METER (15)
REMAINS ON OR FLASHES REPEATEDLY, REDUCE THE SIGNAL LEVEL BY LOWERING THE
INPUT LEVEL CONTROL FOR THE CHANNEL THAT IS CLIPPING OR REDUCE THE LEVEL
AT THE SOURCE
.
- P
ARALLEL MONO OPERATION: When the amplifier is in PARALLEL MONO
mode, the same monophonic signal is output on both output channels of
the S
PEAKON
OUTPUTS
(4) & ¼” SPEAKER
OUTPUTS
(6). Each channel's output
is controlled independently by the respective CH 1 (13) & CH 2 (14) volume rotary controls.
With the power O
FF, set the OPERATION MODE SWITCH (8) to the PARALLEL
MONO position.
With the power O
FF
, connect your input cable to the CH 1 input only
using the XLR BALANCED INPUT (10) or ¼" TRS BALANCED INPUT (9) of channel 1.
Connect the loudspeakers to both S
PEAKON OUTPUTS (4) or ¼" OUTPUTS
(6).
NOTE:
THE TOTAL SPEAKER LOAD MUST BE AT LEAST 4 OHMS PER CHANNEL. IF YOU
TRY TO OPERATE AT A LOWER IMPEDANCE
, THE AMPLIFIER WILL GO INTO PROTECTION
MODE & STOP OPERATION UNTIL YOU CORRECT THE LOAD CONDITIONS.
With the CH 1 (13) & CH 2 (14) volume rotary controls set to zero (fully
counterclockwise), push the P
OWER BUTTON (11) to turn ON the amplifier.
Apply a signal to the input. The level of the input signal should be as high
as you will ever need it to be. This way, it will be as high above the amplifier's noise floor as possible, ensuring an excellent performance & signal to
noise ratio. Adjust the CH 1 (13) & CH 2 (14) volume rotary controls to
achieve the desired maximum listening level.
NOTE:
WHEN THE CLIP LEDS LIGHT, THERE IS DISTORTION PRESENT IN THE AMPLI-
FIER
'S OUTPUT SECTION. IF A CLIP LED REMAINS ON OR FLASHES REPEATEDLY,
REDUCE THE SIGNAL LEVEL BY LOWERING THE INPUT LEVEL CONTROL FOR THE CHAN-
NEL THAT IS CLIPPING OR REDUCE THE LEVEL AT THE SOURCE.
- MONO BRIDGE OPERATION: Bridging the amplifier converts the unit to a
monophonic or single channel amplifier. The amplifier can be used only
with 8 Ohm or higher loads in MONO BRIDGE
mode. This mode is
used to provide a higher power output with greater headroom to your
speaker. Before setting your amplifier for M
ONO BRIDGE operation, make
sure that your speaker can handle the high power level provided by the
amplifier in M
ONO B
RIDGE
mode.
CAUTION:
OVER 100 V MAY BE PRODUCED AT THE BRIDGE OUTPUT TERMINALS IN
THIS MODE. MAKE SURE THE POWER IS OFF BEFORE SETTING THE OPERATION MODE
SWITCH
(8) TO THE BRIDGE POSITION.
With the power OFF, connect your input cable to CH 1 input only, using
the XLR B
ALANCED
INPUT
(10) or ¼” TRS BALANCED
INPUT
(9) of CH 1.
Connect the loudspeaker to the B
RIDGED
OUTPUT SPEAKON
(5) only. Be
sure the polarity of your connection is correct.
NOTE: THE TOTAL SPEAKER LOAD MUST BE AT LEAST
8 OHMS OR ABOVE. IF YOU
TRY TO OPERATE AT LESS THAN
8 OHMS IN THE MONO BRIDGE MODE, THE AMPLI-
FIER WILL GO INTO PROTECT MODE & CEASE OPERATION UNTIL YOU CORRECT THE
LOAD CONDITIONS
.
With the CH 1 (13) volume rotary control set to zero (fully counterclock-
wise), push the P
OWER BUTTON (11) to turn ON the amplifier. Apply a signal
to the input. The level of the input signal should be as high as you will ever
need it to be. This way, it will be as high above the amplifier's noise floor
as possible, ensuring an excellent performance & signal to noise ratio.
Adjust the CH 1 (13) volume rotary control to achieve the desired maximum listening level.
NOTE:
WHEN THE CLIP LEDS LIGHT, THERE IS DISTORTION PRESENT IN THE AMPLI-
FIER'S OUTPUT SECTION. IF A CLIP LED REMAINS ON OR FLASHES REPEATEDLY,
REDUCE THE SIGNAL LEVEL BY LOWERING THE INPUT LEVEL CONTROL FOR CH 1 OR
REDUCE THE LEVEL AT THE SOURCE
. DURING MONO BRIDGE OPERATION, THE CH 2
LEVEL IS INACTIVE; HOWEVER, BOTH CHANNELS' LEDS WILL FLASH SIMULTANEOUSLY
& SHOW OUTPUT CONDITIONS.
2. P
OWER BUTTON: Once all of your connections have been made in the rear
panel and your operations settings are made, turn on the amplifier by
pressing the P
OWER
BUTTON
(11). The POWER
BUTTON
(11) turns the unit ON
& OFF. The POWER BUTTON (11) LED lights when the power is on. If the LED
does not light, refer to the troubleshooting guide.
3. GROUND LIFT SWITCH: The GROUND LIFT SWITCH (7) is used to lift the balanced input connectors' ground/shield from the amplifier's ground. When
the signal ground lifted, the sound source disconnects from the
amplifier's ground preventing ground loops which can generate
hum & noise. Depending on your system's configuration, applying the
ground may create a quieter signal path. Sometimes lifting the ground can
eliminate ground loops & hum to create a quieter signal path.
With the power amplifier O
N, listen to the system in idle mode (no signal
present) with the ground applied (the G
ROUND LIFT SWITCH (7) in the left
position).
Turn the power OFF before moving the GROUND LIFT SWITCH (7). Lift the
ground by moving the G
ROUND LIFT SWITCH (7) to the right, turn the power
back on & listen to determine which position will provide a signal free of
background noise & hum. Keep the G
ROUND LIFT SWITCH
(7) in the ground
position if the noise level remains the same in either position.
CAUTION:
DO NOT DEFEAT THE AC GROUND PIN ON THE POWER CABLE IN ANY
WAY
. TERMINATION OF THE AC GROUND CAN BE HAZARDOUS.
4. D
ECIBEL METER: The DECIBEL METER (15) indicates the audio signal's deci-
bel (dB) level as well as clipping.
NOTE: IN MONO BRIDGE MODE, BOTH THE CH 1, CH 2 METERS & CLIP LEDS (WHEN
CLIPPING OCCURS
) WILL OPERATE SIMULTANEOUSLY.
Clipping refers to audible distortion that can be damaging to
speakers especially if the distortion is hard and frequent. The
amplifier has true Clip LEDs to help you monitor the amplifier's
output & achieve undistorted sound. The Clip LED for each chan-
nel lights when your signal level is so strong that the distortion reaches 1%
THD. The Clip LED should not remain constantly O
N or flash repeatedly
during operation.
For clean sound reproduction, the Clip LED should only light occasionally for an instant. If the LED remains on or flashes repeatedly, you will hear
distorted sound that can be damaging to your speaker system. If this
occurs, reduce the signal level by lowering the input volume rotary control
for the channel that is clipping or reduce the level at the source.
If the Clip LED lights when no signal is present, it may indicate an RF signal on the output which may cause damage to speakers (the RF signal will
not be audible).
5. V
OLUME: CH 1 (13) & CH 2 (14) volume rotary control establish the
input levels required for each channel. Only the CH 1 (13) volume rotary
control works in M
ONO BRIDGE
mode.
6. P
ROTECT LED: The GPA series features several types of compre-
hensive protection circuitry to ensure the reliability &
longevity of your unit. These include Short Circuit, DC,
Thermal Cut-off, Sub/Ultrasonic Frequency Filters, Turnon Delay, Main Fuse, & Secondary DC Fuses.
When you first turn O
N the amplifier, the PROTECT LED (12)
lights briefly during a turn-on delay which indicates that the out-
puts are disconnected internally. There will be an audible click when the
outputs reconnect & the P
ROTECT LED (12) will turn OFF. Otherwise, the
P
ROTECT LED (12) indicates that there is a problem either in the amplifier's
external connections, load or temperature conditions, or its internal functions. If one of these situations occurs, the amplifier senses the problem &
automatically switches into protection mode.
The P
ROTECT LED (12) will light to warn you of the trouble & the ampli-
fier will stop outputting signal. If this occurs, switch off the amplifier &
refer to the Troubleshooting Guide. If the P
ROTECT LED (12) remains lit
when resuming amplifier operation, do not use the amplifier & contact an
authorized service technician.
NOTE:
THE PROTECT LED (12) IS NOT INCLUDED ON THE GPA-1000.
The GPA SERIES amplifiers come supplied with RACK EARS to allow the
mounting of the unit in a standard, 19-inch equipment rack. Use a Philipshead screwdriver along with the supplied mounting hardware to attach the
R
ACK EARS.
SPECIFICATIONS:
1000 2000 3000 4000
Output Power EIA:................................................1 kHz at 1% THD, WRMS
Both Channels Driven at 8 Ohms
70 85 140 200
Both Channels Driven at 4 Ohms
90 110 200 300
Mono Bridge at 8 Ohms
180 220 400 600
Dynamic Headroom, dB:..............................................................at 8 Ohms
1.3 1.4 1.5 1.6
......................................................................................................at 4 Ohms
1.8 1.9 2.0 2.2
Frequency Response..............................................................30 Hz - 50 kHz
Total Harmonic Distortion............Less than 0.05%, typical 0.02% at 1 kHz
Signal to Noise ratio..........................100 dB below rated power at 8 Ohms
Damping factor..................................................greater than 200 at 8 Ohms
Slew rate...........................................................................................20 V/µS
Voltage gain..............................................................................................dB
27 28 30 32
Input Sensitivity (for rated power at 8 Ohms)..................................1 VRMS
Input Impedance Unbalanced......................................................10 kOhm
Input Impedance Balanced............................................................20 kOhm
Power consumption (at rated power at 4 Ohms, both channels driven)...W
400 500 800 1200
AC Power Requirements....................110-120 V / 60 Hz ; 220-240 V / 50 Hz
Indicators:................................................................................1 Power LED
.................................................................1 Protect LED (except GPA-1000)
..................................................................................VU-meter per Channel
Cooling...........................................................Fan, Front-to-Rear Forced Air
Protection:............................................Short Circuit, DC, Thermal Cut-off,
.................................................................Sub/Ultrasonic Frequency Filters,
...........................................Turn-on Delay, Main Fuse, Secondary DC Fuses
C
ONNECTORS:
Balanced/Unbalanced inputs.................................................XLR & ¼” Jack
Speaker Outputs:..........................................................Speakons & ¼” Jack
D
IMENSIONS:
GPA series.............................19"W x 10.75"D x 3.5"H (483 x 273 x 89 mm)
Weight.........................................................................................................
13.6 lbs 16.5 lbs 18.3 lbs 20.2 lbs
6.2 kg 7.5 kg 8.3 kg 9.2 kg
S
PECIFICATIONS & DESIGN ARE SUBJECT TO CHANGE WITHOUT NOTICE FOR PUR-
POSE OF IMPROVEMENT
.
<5>
GPA Series
<6>
GPA Series
CAUSE:
- Power button is not in ‘ON’ position.
- Power cable is not connected to the amplifier
or to the outlet.
- AC outlet not active.
- Main amplifier fuse defective.
- No input source signal.
- Input source not connected.
- Input connecting cable defective.
- Speaker(s) are not connected.
- Speaker cable is defective.
- Speaker system(s) are inoperative.
- Amplifier’s level controls are set to ‘zero’.
- Amplifier input level controls are set too low.
- Wrong pin connections in the cables.
- Improper or defective ground connection at
the inputs.
- Improper or defective ground at the input
source device(s).
- Improper or defective grtound connection on
the AC outlet.
- Ground loop through the AC line
connection/rack mounting.
- Distortion occuring in source device.
- Input level is set too high.
- Unit is operating at an excessively high temperature.
- Extremely low speaker impedance.
- Short in the speaker connectors, speaker
cables, or speaker system.
- Speaker impedance is too low.
- Type or rating of fuse is not correct.
- Failed amplifier.
SYMPTOM:
1. Unit does not produce sound.
Power LED does not light.
2. Power LED lights, but no sound is
produced by the amplifier.
3. Sound is present but volume is too
low even though the source is set to a
high level.
4. Loud 50/60 Hz or 100/120 Hz hum is
heard at all times through the speaker
systems.
5. Sound is distorted.
6. Protect LED remains lit or goes on
and off intermittently after using the
amplifier for a short time.
7. The fuse blows intermittently.
8. Protect LED stays on with no speak-
ers connected and with the amplifier at
a cool temperature.
SOLUTION:
- Move the power button to the ‘ON’ position.
- Connect the power cord to the AC in and to the electrical outlet.
- Check the condition of the outlet.
- Replace the amplifier’s main power fuse on the rear pane with the correct type & rating.
- Check for the proper function of the input source device.
- Check the input cables and connections. Replace questionable cables with tested, reliable cables.
- Check the speaker cables and connections. Replace questionable cables with tested, reliable cables.
- Check the operating condition and status of the speaker system(s). Be sure the volume rotary controls are set properly.
- Adjust the amplifier’s level controls to the appropriate volume level. as per instructions.
- Adjust the amplifier’s level controls to the appropriate volume level as per instructions.
- Use the correct cables (as shown on the back of the unit).
- Check for proper AC line ground on the amplifier and all input devices.
- Check the input cables for all source devices and signal processing as well as input cables to the power amplifier.
- Check the position of the groun d lift switch as per instructions for lifting the signal ground.
- Never lift the AC ground line on the power amplifier. If you are not totally familiar with the ground lifting or unification
procedures, do not attempt them without first consulting your dealer or a qualified sound technician for more information
on grounding. Such a procedure can pose a serious safety and/or fire hazard if improperly done.
- Check the clip LEDs on the input source devices and reset the levels if necessary to eliminate the distortion.
- Adjust the amplifier’s level controls to the appropriate volume level as per instructions.
- Check that the amplifier is adequately ventilated on the front and rear panels where the air vents and fans are located. If
overheated, let the amplifier cool down prior to applying an input signal.
- Verify the speaker system impedances. Be sure the total load is at least 4 ohms per channel in stereo or parallel mono
mode, or at least 8 ohms in mono bridged mode.
- Check the condition of the speaker cables.
- Check for shorts in the wiring leading from the output of the amplifier.
- Verify the speaker system impedances.
- Check the fuse type and rating is correct.
- Contact the Gemini Service Department or your authorized dealer to speak to a qualified service technician.
In the USA, call (732)738-9003.
VORSICHT: Dieses Produkt erfüllt die FCC-Regeln, wenn Sie zum
Anschluss abgeschirmte Kabel und Stecker verwenden, um es mit anderen
Geräten zu verbinden. Auch um elektromagnetische Störungen anderer
elektrischer Geräte wie Radios oder Fernseher zu vermeiden, benutzen Sie
abgeschirmte Kabel und Stecker für die Verbindungen.
Das Ausrufezeichen im gleichseitigen Dreieck weißt Sie in der
Bedienungsanleitung auf wichtige Bedienungsanweisungen und Wartungs/Serviceanweisungen hin.
Das Blitzsymbol im gleichseitigen Dreieck dient dazu, den Benutzer vor
gefährlichen Spannungen an nicht isolierten Stellen im Gehäuse zu warnen, die so groß sind, dass Sie eine Gefahr für den Benutzer darstellen.
ANWEISUNGEN LESEN: Lesen Sie alle Sicherheits- und
Bedienungsanweisungen, bevor Sie mit dem Produkt arbeiten.
AUFBEWAHRUNGSHINWEIS: Bewahren Sie alle Sicherheits- und
Bedienungsanweisungen gut auf.
WARNHINWEISE: Alle Warnhinweise für das Produkt und die
Bedienungsanweisungen müssen genau eingehalten werden.
ANWEISUNGEN BEFOLGEN: Alle Anweisungen zum Betrieb des Produkts
sollten befolgt werden.
REINIGUNG: Das Produkt sollte nur mit einem Polier- oder einem
weichen trockenen Tuch gereinigt werden. Benutzen Sie dazu niemals
Möbelwachs, Benzine, Insektenmittel oder andere flüchtige
Reinigungsmittel, denn Sie könnten zur Korrosion des Gehäuses führen.
ERWEITERUNGEN: Benutzen Sie keine Erweiterungen, die nicht vom
Hersteller empfohlen sind, da sie zu Risiken führen könnten.
WASSER&FEUCHTIGKEIT: Benutzen Sie dieses Produkt nicht in der Nähe
von Wasser, z. B. in der Nähe einer Badewanne, einer Waschschüssel, eines
Küchenspülbeckens eines Waschbeckens, in einem feuchten Keller, einem
Schwimmbecken oder an ähnlichen Orten.
ZUBEHÖR: Stellen Sie das Produkt nicht auf eine wackelige und labile
Unterlage. Das Produkt könnte herunterfallen und dabei Kinder oder
Erwachsene verletzen, wie auch selber beschädigt werden. Stellen Sie das
Produkt nur auf vom Hersteller empfohlene oder verkaufte Unterlagen.
Jede Befestigung und Montage des Produkts sollte nach den Anweisungen
des Herstellers ausgeführt werden. Nutzen Sie dazu ein vom Hersteller
empfohlenes Montageset.
MOBILE UNTERLAGEN: Bewegen Sie eine Kombination aus dem Produkt
und einer mobilen Unterlage mit Vorsicht. Schnelles Anhalten, zu viel
Schub oder unebene Böden können dazu führen, dass sich Produkt und
mobile Unterlage überschlagen (S
IEHE BILD A).
BELÜFTUNG: Schlitze und Öffnungen im Gehäuse sind für die Belüftung
vorgesehen. Sie stellen den zuverlässigen Betrieb des Produkts sicher und
schützen es vor Überhitzung. Diese Öffnungen dürfen nicht verschlossen,
blockiert oder bedeckt werden. Stellen Sie deswegen das Produkt niemals
auf ein Bett, ein Sofa, einen Teppich oder Stellen mit ähnlicher Oberfläche.
Wenn Sie dieses Produkt in einer festen Installation wie z. B. in einem Regal
oder einem Rack einbauen, sorgen Sie für ausreichende Belüftung oder
sorgen Sie dafür, dass die Bestimmungen des Herstellers genau eingehalten werden.
STROMANSCHLUSS: Dieses Produkt darf nur mit dem auf dem Gerät
angegebenen Strom betrieben werden. Wenn Sie sich nicht sicher sind,
welche Stromart Sie bei sich zuhause haben, fragen Sie den Verkäufer des
Geräts oder Ihren Stromversorger.
AUFSTELLUNGSORT: Stellen Sie das Gerät an einem festen Ort auf.
ZEITEN DES NICHTGEBRAUCHS: Ziehen Sie das Stromkabel aus dem
Gerät heraus, wenn Sie es für eine längere Zeit nicht gebrauchen.
ERDUNG ODER POLUNG:
- Wenn dieses Produkt mit einem gepolten Wechselstromstecker (Ein
Stecker mit einem Kontakt mehr als andere Stecker) ausgestattet ist, passt
dieser nur in einer bestimmten Richtung in die Steckdose und ist ein
besonderes Sicherheitsmerkmal. Sollten Sie den Stecker nicht komplett in
die Steckdose stecken können, versuchen Sie ihn andersherum einzustecken. Sollte der Stecker auch dann noch nicht in die Steckdose passen, beauftragen Sie einen Elektriker, um diese veraltete Steckdose auszutauschen.
- Wenn dieses Produkt mit einem geerdeten dreipoligen Stecker ausgestattet ist, hat der Stecker einen dritten (Erdungs-)Kontakt und passt nur in
eine Steckdose mit entsprechender Erdung. Auch das ist ein
Sicherheitsmerkmal. Sollte der Stecker nicht in die Steckdose passen,
beauftragen Sie einen Elektriker, um diese veraltete Steckdose auszutauschen.
SCHUTZ DES STROMKABELS: Stromkabel sollten so verlegt werden, dass
man nicht auf sie treten kann noch dass sie von darauf stehenden oder
gegen sie stoßenden Gegenständen gequetscht werden. Achten Sie besonders auf Kanten, Sicherung, Stecker und Buchsen.
AUSSENANTENNENERDUNG: Wenn Sie eine Außenantenne oder ein
Radio-/Fernsehkabelsignal an das Produkt anschließen, achten Sie darauf,
dass die Antenne oder das Kabel geerdet sind, um dafür zu sorgen, dass
Überspannungen und elektrostatische Aufladungen nicht auftreten können. Im Artikel 810 des National Electrical Code, ANSI/NFPA 70, finden Sie
Informationen über die richtige Erdung des Antennenmasts und weitere
Informationen zu diesem Thema. (S
IEHE AUCH ABBILDUNG B).
GEWITTER: Trennen Sie das Produkt während eines Gewitters oder wenn
es unbeaufsichtigt ist oder wenn es für eine lange Zeit nicht benutzt wird
durch Ziehen des Stromkabels vom Stromnetz. Trennen Sie auch die
Verbindung zu einer Antenne oder Radio-/Fernsehkabeln. Dadurch vermeiden Sie Beschädigungen des Produkts durch Blitze oder Überspannungen.
STROM- UND ÜBERLANDLEITUNGEN: Stellen Sie eine Außenantenne
nicht in der Nähe von Überlandleitungen, elektrischen Licht- oder
Stromkreisen oder an Stellen, wo sie in eine solche Leitung fallen könnte
auf. Wenn Sie eine Außenantenne aufstellen, achten Sie besonders darauf,
dass Sie auf keinen Fall irgendwelche Stromleitungen berührt. Das kann zu
gefährlichen Auswirkungen führen.
ÜBERLASTUNG: Überlasten Sie keine Steckdosen, Verlängerungskabel
oder Sicherungen. Das kann zu Bränden oder elektrischen Schlägen
führen.
EINDRINGEN VON GEGENSTÄNDEN ODER FLÜSSIGKEIT: Führen Sie
niemals irgendwelche Gegenstände durch Öffnungen in das Produkt ein.
Sie könnten mit Strom führenden Stellen in Verbindung kommen oder
Kurzschlüsse verursachen, die zu Bränden oder elektrischen Schlägen
führen können. Gießen Sie niemals irgendwelche Flüssigkeiten auf oder in
das Produkt.
SERVICE: Versuchen Sie nicht, das Produkt selber zu reparieren. Durch
das Öffnen des Gehäuses oder Entfernen von Schrauben können Sie mit
gefährlichen Spannungen oder anderen Risiken in Kontakt kommen.
Beauftragen Sie im Reparaturfall nur qualifiziertes Servicepersonal.
WANN SERVICE NÖTIG IST: Unter den folgenden Bedingungen ziehen
Sie auf jeden Fall das Stromkabel aus der Steckdose und beauftragen Sie
für eine Reparatur nur qualifiziertes Servicepersonal:
- Wenn das Stromkabel defekt ist.
- Wenn Flüssigkeit auf oder in das Produkt gelaufen ist oder Gegenstände
in das Produkt gefallen sind.
- Wenn das Produkt Regen oder Wasser ausgesetzt war.
- Wenn das Produkt trotz Befolgen der Bedienungsanweisungen nicht
normal arbeitet. Stellen Sie dabei das Produkt nur nach den Anweisungen
der Bedienungsanleitung ein, andere Einstellungen können das Produkt
beschädigen und den aufwändigen Einsatz von Technikern für die
Wiederherstellung erfordern.
- Wenn das Produkt hingefallen oder auf andere Art und Weise beschädigt
ist.
- Wenn das Produkt eine eindeutige Veränderung im Betrieb zeigt.
ERSATZTEILE: Wenn Ihr Produkt Ersatzteile benötigt, achten Sie darauf,
dass der Servicetechniker nur vom Hersteller erlaubte Ersatzteile oder
Ersatzteile, die die gleichen Eigenschaften wie die originalen Teile
aufweisen, einsetzt. Falsche Ersatzteile können zu Bränden, elektrischen
Schlägen oder anderen Risiken führen.
SICHERHEITSTEST: Bevor der Service oder eine Reparatur für dieses
Produkt beendet sind, beauftragen Sie den Servicetechniker, einen
Servicetest durchzuführen, um sicher zu stellen, dass das Produkt einwandfrei funktioniert.
WAND- ODER DECKENMONTAGE: Das Produkt sollte nicht an einer
Wand oder der Decke montiert werden.
HITZE: Stellen Sie das Produkt nicht in die Nähe von Wärmequellen wie
Radiatoren, Wärmespeichern, Öfen oder anderen Produkten (auch
Verstärker), die Hitze erzeugen.
VERWERTEN SIE WIEDER: Dieses Produkt sollte nicht als Haushaltsmüll
entsorgt werden. Entsorgen Sie das Produkt im Bedarfsfall bei einer
zuständigen Entsorgungsstelle, die das Recycling der elektrischen und
elektronischen Bauteile übernimmt. Wenn Sie das Produkt dem gemäß
entsorgen, schützen Sie die Umwelt und die menschliche Gesundheit. Bei
nicht sachgemäßer Entsorgung gefährden Sie die Umwelt und die menschliche Gesundheit. Das Recycling verschiedener Materialien hilft, die
Natur und Ihre Ressourcen zu schonen. Für nähere Informationen
bezüglich der Entsorgung dieses Produkts nehmen Sie Kontakt auf mit
Ihrer lokalen Stadtverwaltung, dem zuständigen Entsorgungsunternehmen
oder dem Händler, bei dem Sie das Produkt gekauft haben.
<7>
ACHTUNG!
BITTE UNBEDINGT VOR BENUTZUNG DES GERÄTS LESEN!
WICHTIGE HINWEISE UND SICHERHEITSANWEISUNGEN
GEFAHR EINES ELEKTRISCHEN SCHLAGS. GERÄT NICHT ÖFFNEN!
GPA Series
Loading...