Unika UA-3000 Le manuel du propriétaire
- Catégorie
- Haut-parleurs de la barre de son
- Taper
- Le manuel du propriétaire
User Instructions
This booklet contains important information concerning the proper and safe operation of your new amplifier..
PA-Series
PA-664 / PA-1804
Made in Taiwan
Professional Power Amplif iers
Index
02 Important Precautions
Introduction02
03 Front Panel
04 Rear Panel
05 Set Up
07 Operating Modes
09 Protection
10 Specications
UNiKA
Clip Clip Clip Clip
Signal Signal Signal Signal
POWER
CH 1
CH 2
CH 3
CH 4
Min Min Min MinMax Max Max Max
4Ch POW ER AMP
PA 66 4
UNiKA
Clip Clip Clip Clip
Signal Signal Signal Signal
POWER
CH 1
CH 2
CH 3
CH 4
Min Min Min MinMax Max Max Max
PA1804
4Ch POW ER AMP
PA
UNiKA
1804
UNiKA PA-664/PA-1804
page 1
This symbol is intended to alert the user to the presence of
non insulated "dangerous voltage" within the product's
enclosure that may be of sufficient magnitude to constitute
a risk of electric shock to persons.
!
CAUTION: Risk of the electrical shock - DO NOT OPEN!
CAUTION: To reduce the risk of electrical shock, do not remove cover. No user serviceable parts inside. Refer all servicing
to qualified service personnel.
WARNING: To prevent electrical shock or fire hazard, do not expose this amplifier to rain or moisture. Before using this
amplifier read the user manual for further warnings.
This symbol is intended to alert the user of
the presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the product.
Este símbolo tiene el propósito de alertar al usuario de la
presencia de “voltaje peligroso” que no tiene aislamiento
dentro de la caja del producto que puede tener una
magnitud sufciente como para constituir riesgo de corrientazo.
!
PRECAUCIÓN: Riesgo del choque eléctrico - NO SE ABRA
PRECAUCIÓN: Para disminuir el riesgo de choque eléctrico, no quite la cubierta. No hay piezas adentro que el usario puede
reparar. Deje todo mantenimiento al los técnicos cualifcados.
ADVERTENCIA: Para prevenir choque eléctrico o riesgo de incendios, no deja expuesto a la lluvia o a la humedad este amplif
cador. Antes de usar este amplif cador, lea mas advertencias en la guia de operacion.
Este símbolo tiene el propósito de alertar al
usuario de la presencia de instrucciones
importantes sobre la operación y
mantenimiento en la literatura que vienc con el producto.
Ce symbole est utilisé pur indiquer à l’utilisateur la présence
à l'intérieur de ce produit de tension non-isolée
dangereuse pouvant être d'intensité suffisante pour
constituer un risque de choc électrique.
!
ATTENTION: Risque de choc électrique - NE PAS OUVRIR!
ATTENTION: Afin de réduire le risque de choc électrique, ne pas enlever le couvercle. Il ne se trouve à l’intérieur aucune piéce
pouvant être réparée par l'utilisateur. Confier l'entretien à un personnel qualifé.
AVERTISSEMENT: Afin de prévenir les risque de décharge ou de feu, n’exposez pas cet appareil à la pluie ou à l’humidité.
Avant d’utiliser cet amplificateur, lisez les avertissements supplémentaries situés dans le guide.
Ce symbole est utilisé pour indiquer à l’utilisateur
qu'il trouvera d'importantes instructions
importantes sur l'utilisation et l'entretien de
l'appareil dans la littérature accompagnant le produit.
Dieses Symobl soll den Anwender vor unisollierten
gefährlichen Spannungen innerhalb des Gehäuses warnen,
die von Ausreichender Stärke sind, um einen elektrischen
Schlag verursachen zu können.
!
VORSICHT: Risiko - Elektrischer Schlag! Nicht öffnen!
VORSICHT: Um ddas Risiko eines elektrischen Schlages zu vermeiden, nicht die Abdeckung enfernen. Es befinden sich keine
Teile darin, die vom Anwender repariert werden könnten. Reparaturen nur von qualifzierte Fachpersonal
durchführen lassen.
ACHTUNG: Um einen elektrischen Schlag oder Feuergefahr zu vermeiden, sollte diesen Gerät nicht dem Regen oder
Feuchtigkeit ausgesetz werden. Vor Inbetriebnahme unbedingt die Bedienungsanleitung lesen.
Dieses Symobl soll den Benutzer auf wichtige
Instruktionen in der Bedienungsanleitung
aufmerksam machen, die Handhabung und
Wartung des Produkts betreffen.
CAUTION
Do not open -
risk of electric shock
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO
NOT REMOVE THE COVER. THERE ARE NO USER
SERVICEABLE PARTS INSIDE. REFER ALL SERVICE TO
YOUR AUTHORIZED DEALER.
The lightning flash with an arrow triangular
symbol is intended to alert the user to the
presence of non insulated “dangerous
voltage” within the products enclosure, and
may be of sufficient magnitude to constitute
a risk of electric shock.
The exclamation point triangular symbol is
intended to alert the user to the presence of
important operating and maintenance
(servicing) instructions in the user manual
accompanying the amplifier.
!
!
FOR OPTIMUM PERFORMANCE AND RELIABILITY
DO NOT PRESENT THE AMPLIFIER WITH A
SPEAKER LOAD OF LESS THAN 2 OHMS OR ANY
COMBINATION OF SPEAKERS THAT TOGETHER ARE LESS
THAN 2 OHMS!
USING ONE SPEAKER, IT MUST BE RATED AT 4 OR MORE
OHMS. USING TWO SPEAKERS, THEY MUST RATED EACH AT 4
OR MORE OHMS.
USING THREE SPEAKERS, THEY MUST BE RATED EACH AT 8
OR MORE OHMS.
POUR ASSURER LA FIABILETE ET OBTENIT UNE
PERFORMANCE OPTIMALE, NESOUMETTE
JAMAIS L’AMPLIFICATEUR A UNE CHARGE
D’IMPEDANCE
TOTALE INFERIEURE A 2 OHMS, NI AVEC UN H.P. N EN
COMBINAISON DES H.P.
AVEC UN H.P., IL FAUT UNE CHARGE D’IMPEDANCE MINIMUM
DE 2 OHMS.
AVEC DEUX H.P., FAUT POUR CHAOUN UNE CHARGE
D’IMPEDANCE MINIMUM DE 4 OHMS.
AVEC TROIS H.P., FAUT POUR CHAOUN UNE CHURGE
D’IMPEDANCE MINIMUM DE 8 OHMS.
!
!
page 2
IMPORTANT PRECAUTIONS
To reduce the risk of electrical shock or fire, do not expose this unit rain or
moisture.
Do not spill water or other liquids into or on to your unit.
Do not attempt to operate this unit if the power cord has been frayed or
broken.
Do not attempt to remove or break off the ground prong from the electrical
cord. This prong is used to reduce the risk of electrical shock and f re in
case of an internal short.
Disconnect main power before making any type of connection.
Do not remove the cover under any conditions. There are no user
serviceable parts inside.
Never plug this unit in to a dimmer pack.
Always be sure to mount this unit in an area that will allow proper
ventilation. Allow about 6” (15cm) between this device and a wall.
Do not attempt to operate this unit, if it becomes damaged.
This unit is intended for indoor use only, use of this product outdoors voids
all warranties.
During long periods of non-use, disconnect the unit’s main power.
Always mount this unit in a safe and stable manner.
Power cords should be routed so they are not likely to be walked on,
pinched by items placed upon or against them.
Cleaning -The outside of the unit should be wipe down with a soft cloth and
mild cleaner when needed.
Heat -The amplifier should be situated away from heat sources such as
radiators, heat registers, stoves, or other appliances (including amplifiers)
that produce heat.
The fixture should be serviced by qualified service personnel when:
A. The power-supply cord or the plug has been damaged.
B. Objects have fallen, or liquid has been spilled into the unit.
C. The appliance has been exposed to rain or water.
D. The fixture does not appear to operate normally or exhibits a
marked change in performance.
Congratulations and thank you for purchasing PA-664/PA-1804 amplifier.
These amplifiers are representation of UNiKA’s continuing commitment to
produce the best and highest quality audio products at an affordable price.
These amplifiers are designed to provide a big impact in sound
reproduction. Please read and understand this manual completely before
attempting to operate your new amplifier. This booklet contains important
information concerning the proper and safe operation of your new amplifier.
UNPACKING: Every PA-664/PA-1804 amplifier has been thoroughly
tested and has been shipped in perfect operating condition. Carefully check
the shipping carton for damage that may have occurred during shipping. If
the carton appears to be damaged, carefully inspect your unit for any
damage and be sure all accessories necessary to operate the system have
arrived intact. In the event damage has been found or parts are missing,
please contact your dealer for further instructions.
INSTALLATION: These amplifiers are designed to mount into a
standard 19”rack. The front panel provides four holes used to screw the unit
into a rack. The unit also provides a way to rear mount the unit into a rack for
added security. Rear mounting the unit is especially recommended if the
unit is to mounted into a mobile rack.
INTRODUCTION
UNiKA PA-664/PA-1804
Important Precautions Introduction Front Panel Rear Panel Set Up Operating Modes Protection Specifications
FRONT PANEL
1. Rack Mounting Ears - Two front panel mounting holes are provided on
each mounting ear.
2. Rack Handle - PA Series amplifiers are designed with rack handle at
two each side. It's not only to make the entire design elegant but more
practical and convenient for users.
3. Fan Inlet Grills and Filter - PA Series amplifiers are cooled by two rear
mounted fans. Cool air from front grills is filtered and flows over the
heatsinks and exhausts to back side.
Make sure these outlets remain clear to allow unrestricted air flow.
4. AC Power Switch - PA Series amplifiers have a front-panel AC mains
power switch.
5. Power Indicator - This LED will glow when mains power is applied to
the unit. This light may continue to glow briefly after mains power has
been turned off, this is normal.
6. Channel 1-4 Signal Indicator - This LED indicates that a signal (above
a minimum threshold) is present at the amplifier input, and that the
signal is being amplified.
7. Channel 1-4 Clip Indicator - This LED will begin to flash when the
channel begins to overload (clip), at this point the channel will begin to
distort. Under heavy clipping activity, lower the channel's gain control to
reduce the risk of damage to your speakers and amplifier. This LED may
glow when the unit has been turned off, this is normal.
8. Channel 1-4 Gain Control - This rotary knob is used to control the
output signal level of the channel. Turning the knob in clockwise
direction will increase output signal level.
9. UNiKA Logo and Model No - PA Series have 2 types of 2U models PA-
664/PA-1804.
page 3
Figure 1
UNiKA PA-664/PA-1804
Clip Clip Clip Clip
Signal Signal Signal Signal
POWER
CH 1
CH 2
CH 3
CH 4
Min Min Min MinMax Max Max Max
4Ch POWER AMP
PA
UNiKA
18 0 4
1
3
4
2
5 6 7 8 9
Important Precautions Introduction Rear Panel Set Up Operating Modes Protection Specifications Front Panel
10. Fan Outlet Ports - Dual 2-speed cooling fans. Cooling air enters the
amplifier through the front grills and exhausts through the fans. Be
sure not to block these ports when installing the amplifier or other
associated equipment. Air must flow unimpeded through these ports.
11. Channel 1-4 Balanced 1/4" TRS & XLR Input Connectors - This is
the input terminal of the audio signal that can be connected to the
balanced 1/4” TRS and XLR input plugs.
XLR pin setting: Pin-3/signal negative, Pin-2/signal positive, Pin-
1/ground;
TRS pin setting: TIP/signal positive, RING/signal negative,
SLEEVE/ground
12. Channel 1-4 Output Jack / 5-Way Binding Post - Connect each
speaker to channel 1-4 output terminal respectively. Red is positive
signal and Black is negative signal.
13. Parallel Input Switch - Input signal of channels 1 and 2, 2 and 3, or 3
and 4 in parallel mode. When switch “ON”, it's “Parallel Mode” state,
otherwise it's “Stereo Mode” state when switch “OFF”.
14. Mono Bridge Switch - Input signal of channel 1 and 2 or 3 and 4 in
bridge mode. When switch “ON”, it's “Bridge Mode” state, otherwise
it's “Stereo Mode” state when switch “OFF”.
15. Channel 3 Subwoofer Mode ON/OFF Switch - This switch will enable
the channel 3 to be a subwoofer channel or bypass the subwoofer
function.
16. Channel 3 Frequency Adj. - This pot adjust the frequency level from
20Hz to 200Hz sent to your speaker on channel 3 when using your
amplifier in subwoofer mode.
17. Ground Lift Switch - This switch is used to disconnect the internal
ground signal from the amplifier chassis ground. This may reduce the
buzz that is caused from an electrical 50Hz/60Hz cycle.
18. Breaker - This breaker is an AC protection circuit from short circuit.
Just press the switch to reset it.
19. AC Power Input - Plug this cable in to a standard 110 or 220V wall
outlet. Be sure that supplied voltage matches that of the required
voltage of your amplifier. Never plug your amplifier in to a wall outlet
that does not match the required voltage of your amplifier, serious
damage may occur to your unit.
REAR PANEL
page 4
Figure 2
UNiKA PA-664/PA-1804
CH4 & CH3 CH2 & CH1
CH 4 CH 3
INPUT
PARALLEL
INPUT
PARALLEL
BRIDGE BRIDGE
CH 1CH 2
CH-3
_
+
CH-4
_
+
+ +
__
BRIDGE
MONO
BRIDGE
MONO
CH-1
_
+
CH-2
_
+
AC IN
BREAKER
RESET
4 CHANNEL INPUT BALANCE
CAUTION
2 OHMS MINIMUM IMPEDANCE PER CHANNEL
4 OHMS MINIMUM IMPEDANCE IN MONO BRIDGE MODE
GROUND
LIFT
200Hz20Hz
~120VAC 60Hz
1500 WATTS
FREQUENCY
SUB WOOFER
ON / OFF
CH3 & CH2
PARALLEL
CH 4 CH 3
CH 2 CH 1
15
A
M
P
10
18
10
17 19
15161413 13 1413
12
11
Important Precautions Introduction Front Panel Set Up Operating Modes Protection Specifications Rear Panel
INPUTS - The PA Series amplifier allows you to use two types of input connectors per channel, a XLR female jack for balanced connections
and a 1/4” TRS female jack that will accept balanced and unbalanced connectors. Use these connections to connect the output signal from a
mixer, cross-over or EQ to your PA Series amplifiers. A balanced connection is recommended for cable runs longer than 20ft. When constructing
your own XLR cables follow the pin configuration described below for proper connections. For cable runs shorter than 20ft., you may choose the
1/4” TS unbalanced input option. The 1/4” TS unbalanced input option may be more convenient for most users due to the abundant supply of
prefabricated cables available at your local audio dealer.
BINDING POST/BANANA PLUG: Connect your speakers to the binding post outputs on the rear of the amplifier. The speaker wire may be
connected by bare wire (directly connected, usually for permanent connections), banana plug, or spade connector. Connections are made to
channel one and channel two outputs for Stereo Mode or across the red terminals of channel one and channel two for Mono Bridge Mode.
IMPORTANT NOTICE: Although a speaker will operate with the positive and negative leads plugged into either terminal on the amplifier binding
post, be sure to plug the negative lead into the black terminal and positive lead into the red terminal. Ensuring proper polarity will avoid speakers
being out of phase that can cause a loss of bass response.
2 Hot (+data)
1
3
2
Male XLR Pin Configuration
Figure 3
1 Ground / Return / 0v
3 Negative (-data)
Balanced TRS 1/4” Plug
Hot (+)
Negative (-)
Ground/Shield
Figure 4
Unbalanced TS 1/4” Plug
Hot (+)
Negative (-)
Figure 5
page 5
SET UP
OUTPUTS -
UNiKA PA-664/PA-1804
Important Precautions Introduction Front Panel Rear Panel Operating Modes Protection Specifications Set Up
When connecting your speakers to the amplifier using bare wire, unscrew the red and black caps on the
binding post, be sure not to completely remove or unscrew the red and black caps. Strip back the wire
insulation 1/2” (13mm). Insert the bare wire into the hole that was revealed by unscrewing the binding
post cap. After inserting the wire into the binding post hole, screw the binding post cap down on the wire.
To reduce the risk of shock or damage to your amplifier, be sure that the wire connected to one binding
post does not come in contact with that of another.
SPADE CONNECTOR : (Figure 8)
When connecting your speakers to the amplifier using spade connector; unscrew the red and black caps
on the binding post, be sure not to completely remove or unscrew the red and black caps. Insert the spade
connector into the binding post and tighten the caps down on the spade connector. To reduce the risk of
shock or damage to your amplifier, be sure that the wire connected to one binding post does not come in
contact with that of another.
MONO BRIDGE CONNECTIONS : (Figure 9)
Mono bridge operation connections will follow the above descriptions, however, when operating in mono
bridge operation the speaker connections will run between the two positive (red) leads. Use channel two
positive output terminal for the negative connection and the channel one positive output terminal for the
positive connection.
page 6
BARE WIRE CONNECTION : (Figure 7)
BANANA PLUG : (Figure 6)
When connecting your speakers to the amplifier using banana plugs, be sure that the red and black
caps on the binding post are completely screwed in. Insert the banana plugs into the caps of the binding
post, be sure that the banana plugs are inserted securely to avoid the risk of popping out.
UNiKA PA-664/PA-1804
Typical speaker output using bare wire.
Insert bare wire into the binding post and tighten.
Typical speaker output using spade connectors.
Insert bare wire into the binding post and tighten.
Figure 8
1/5"
13mm
Figure 7
Figure 6
Figure 9
+
_
BRIDGE
MONO
CH-1
_
+
CH-2
_
+
4 CHANNEL INPUT BALANCE
CAUTION
2 OHMS MINIMUM IMPEDANCE PER CHANNEL
4 OHMS MINIMUM IMPEDANCE IN MONO BRIDGE MODE
200Hz
FREQUENCY
CH 2 CH 1
Important Precautions Introduction Front Panel Rear Panel Operating Modes Protection Specifications Set Up
page 7
OPERATING MODES
STEREO OPERATION : Connect your inputs into channels one and two, also channels three and four of the amplifier. Connect your speakers to the outputs on
the rear of the amplifier. Be sure that your front gain controls are turned down to their lowest level (fully counterclockwise). Turn your amplifier on. Turn your input
source level up. Use your front gain controls to regulate the output volume. Be sure not to raise the volume to the clip level, however an intermittent clip signal is
acceptable.
MONO BRIDGE OPERATION : Be sure your amplifier and all other audio equipment are powered down. Press the Bridge button. Connect input signals to
channels one and two, or three and four. Connect your speaker across the red output binding post on the rear of your amplifier. Turn your equipment on (your amplifier
should always be the last item you turn on). Apply an input source signal to your amplifier. Use the channel one and three gain controls to regulate your amplifier output.
PARALLEL MONO : Parallel ties each two channel line inputs together, channels one and two, two and three or three and four, that they will be driven by the same
signal, without the need for external jumpers or wiring. Four amplifier channels will operate independently. Though they carry the same signal, their gain controls affect
only their respective channels, and they both must use their respected speaker outputs. Never attempt to parallel the speaker outputs, this may cause serious damage
to your amplifier! To run in parallel mono mode connect your system as you would if you were going to run in stereo mode. Then press the Parallel button. Be sure the
amplifier is off or the power is disconnected before making any changes.
SUBWOOFER MODE : This mode sends low frequencies to your speakers without the use of an external cross-over. The subwoofer operation can be operated in
mono only. Set the subwoofer mode switch of the channel three to the “ON” position. Use the frequency selector to adjust the subwoofer output frequency from 20Hz to
200Hz. In addition, the channel two and channel three “PARALLEL” switch sets these two channels in parallel mode, therefore when the “Subwoofer” switch is set to
ON, channel two will simultaneously operated as a subwoofer channel same as channel three.
ONE CHANNEL NORMAL / ONE CHANNEL SUBWOOFER (BI-AMP) - You may also use your amplifier to bi-amp your system. You may use one side of the amplifier
to power a subwoofer and the other side to power a full range speaker. Follow the set-up guides listed above to mix and match your operations.
UNiKA PA-664/PA-1804
Figure 10 Mono Bridge Mode Connection
MONO SUBWOOFER SPEAKER
SPEAKER IMPEDANCE MINIMUM 8 OHM
Set to Bridge
Negative (-) Lead
Positive (+) Lead
PA-1804 Rear Panel
Set to Bridge
MONO SUBWOOFER SPEAKER
SPEAKER IMPEDANCE MINIMUM 8 OHM
Negative (-) Lead
Positive (+) Lead
CH4 & CH3 CH2 & CH1
CH 4 CH 3
INPUT
PARALLEL
INPUT
PARALLEL
BRIDGE BRIDGE
CH 1CH 2
CH-3
_
+
CH-4
_
+
+ +
__
BRIDGE
MONO
BRIDGE
MONO
CH-1
_
+
CH-2
_
+
AC IN
BREAKER
RESET
4 CHANNEL INPUT BALANCE
CAUTION
2 OHMS MINIMUM IMPEDANCE PER CHANNEL
4 OHMS MINIMUM IMPEDANCE IN MONO BRIDGE MODE
GROUND
LIFT
200Hz20Hz
~120VAC 60Hz
1500 WATTS
FREQUENCY
SUB WOOFER
ON / OFF
CH3 & CH2
PARALLEL
CH 4 CH 3
CH 2 CH 1
15
A
M
P
Important Precautions Introduction Front Panel Rear Panel Set Up Protection Specifications Operating Modes
page 8
UNiKA PA-664/PA-1804
PA-1804 Rear Panel
Negative (-) Lead
Positive (+) Lead
Negative (-) Lead
Positive (+) Lead
Negative (-) Lead
Positive (+) Lead
STEREO MODE FULL RANGE CONNECTION
SPEAKER IMPEDANCE MINIMUM 4 OHM
Set to Bridge
MONO BRIDGE MODE CONNECTION
SPEAKER IMPEDANCE MINIMUM 8 OHM
(Can be Set as A Subwoofer Channel)
Figure 11
CH4 & CH3 CH2 & CH1
CH 4 CH 3
INPUT
PARALLEL
INPUT
PARALLEL
BRIDGE BRIDGE
CH 1CH 2
CH-3
_
+
CH-4
_
+
+ +
__
BRIDGE
MONO
BRIDGE
MONO
CH-1
_
+
CH-2
_
+
AC IN
BREAKER
RESET
4 CHANNEL INPUT BALANCE
CAUTION
2 OHMS MINIMUM IMPEDANCE PER CHANNEL
4 OHMS MINIMUM IMPEDANCE IN MONO BRIDGE MODE
GROUND
LIFT
200Hz20Hz
~120VAC 60Hz
1500 WATTS
FREQUENCY
SUB WOOFER
ON / OFF
CH3 & CH2
PARALLEL
CH 4 CH 3
CH 2 CH 1
15
A
M
P
STEREO MODE FULL RANGE CONNECTION
PARALLEL MODE FULL RANGE CONNECTION
SPEAKER IMPEDANCE MINIMUM 4 OHM
PA-1804 Rear Panel
Negative (-) Lead
Positive (+) Lead
Negative (-) Lead
Positive (+) Lead
SPEAKER IMPEDANCE MINIMUM 4 OHM
Set to Parallel
Negative (-) Lead
Positive (+) Lead
Negative (-) Lead
Positive (+) Lead
Figure 12
CH4 & CH3 CH2 & CH1
CH 4 CH 3
INPUT
PARALLEL
INPUT
PARALLEL
BRIDGE BRIDGE
CH 1CH 2
CH-3
_
+
CH-4
_
+
+ +
__
BRIDGE
MONO
BRIDGE
MONO
CH-1
_
+
CH-2
_
+
AC IN
BREAKER
RESET
4 CHANNEL INPUT BALANCE
CAUTION
2 OHMS MINIMUM IMPEDANCE PER CHANNEL
4 OHMS MINIMUM IMPEDANCE IN MONO BRIDGE MODE
GROUND
LIFT
200Hz20Hz
~120VAC 60Hz
1500 WATTS
FREQUENCY
SUB WOOFER
ON / OFF
CH3 & CH2
PARALLEL
CH 4 CH 3
CH 2 CH 1
15
A
M
P
Important Precautions Introduction Front Panel Rear Panel Set Up Protection Specifications Operating Modes
page 9
PROTECTION
1. SWITCH ON MUTE PROTECTION - The mute circuit is used at the inputs when the unit switched ON, output of between a few seconds the amplifier will
be muted. This is done so that turn-on/off noises from mixers and other gear is blocked in case the entire system is powered up at once.
2. SHORT CIRCUIT PROTECTION - The PA series comes with built-in Output Short Circuit Protects. The Output Short
Circuit Protection protects the output devices of the amplifier from short circuits and stressful loads. If your speaker lines
shorted, the amplifier automatically detects this problem and discontinued operation for that channel. If one side of your
amplifier becomes shorted and goes into protect mode, the other side will continue to operate normally. Channel output during
the “Short Circuit Protection" will be interrupted (i.e. no sound output). Short Circuit Protection can usually be traced back to the
signal output line (i.e. speaker line). Check the line from the output terminal of the amplifier to the speaker. If this line is good,
check the internal speaker connections and components. A short circuit will usually be traced to a bad cable or a bad speaker
component and is rarely traced to the amplifier itself.
UNiKA PA-664/PA-1804
3. OVERHEATING PROTECTION - The PA series amplifiers are cooled by Dual 2-speed fans, and always are kept at moderate temperature. During low
level output the fans run at normal speeds. During high output and as heat raises, (exceeding 50°C.), the fans will run at higher speeds to aid the cooling process.
If the heatsink temperature exceeds 91°C., the amplifier will mute until the amplifier cools down. When the amplifier cools below 90°C., the amplifier will return to
normal operations. Be sure not to operate your amplifier below the minimum load ratings to reduce the risk of overheating problems.
4. DC CIRCUIT PROTECTION - If dangerous subsonic frequencies or direct current (DC) is detected in the amplifier's output, the unit will activate its DC/low-
frequency protection circuitry and the amplifier will be muted. This protects the loads and prevents oscillations. The unit will resume normal operation while the
amplifier no longer detects dangerous low-frequency or DC output.
Important Precautions Introduction Front Panel Rear Panel Set Up Operating Modes Specifications Protection
page 10
SPECIFICATIONS
UNiKA PA-664/PA-1804
Important Precautions Introduction Front Panel Rear Panel Set Up Operating Modes Protection Specifications
R.M.S. Output Power 4 Ch Driven
4ohms/8ohms
1KHz 1% THD
R.M.S. Output Power Bridged Mono
8ohms 1KHz 1% THD
Input Sensitivity
Frequency Response (20Hz~20KHz)
Total Harmonic Distortion
Crosstalk @ 1KHz
Damping Factor
Output Circuitry
Cooling System
Dimensions (H×W×D)
Weight
Rack Space
Power Consumption
@ Maximum Output Power 8ohms
Signal To Noise Ratio
below rated power 20Hz to 20kHz,
A-Weighted
4 Ch Driven
PA - 664
4ohms 170W
8ohms 100W
1V
±0.2dB
<0.02%
>65dB
>240
508W
4.61A@110V
CLASS AB
Dual 2-speed fans and heatsinks
88 x 483 x 450 mm
15kg
2U
340W
>95dB
4 Ch Driven
PA - 1804
4ohms 340W
8ohms 200W
680W
1V
±0.2dB
<0.02%
>65dB
>240
1840W
16A@110V
CLASS AB
Dual 2-speed fans and heatsinks
88 x 483 x 450 mm
17kg
2U
>95dB
Professional Power Amplif iers
UNiKA
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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Unika UA-3000 Le manuel du propriétaire
- Catégorie
- Haut-parleurs de la barre de son
- Taper
- Le manuel du propriétaire
dans d''autres langues
- English: Unika UA-3000 Owner's manual
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