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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

Min

Max

Max

Max

Max

4Ch POWER AMP

PA

UNiK A

1804

1

3

4

2

5 6

7

8

9

Important Precautions     Introduction

     Rear Panel     Set Up     Operating Modes     Protection     Specifications

     

Front Panel

Содержание PA-664

Страница 1: ...mportant Precautions Introduction 02 03 Front Panel 04 Rear Panel 05 Set Up 07 Operating Modes 09 Protection 10 Speci cations UNiKA Clip Clip Clip Clip Signal Signal Signal Signal POWER CH 1 CH 2 CH 3...

Страница 2: ...suppl mentaries situ s dans le guide Ce symbole est utilis pour indiquer l utilisateur qu il trouvera d importantes instructions importantes sur l utilisation et l entretien de l appareil dans la lit...

Страница 3: ...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...

Страница 4: ...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 b...

Страница 5: ...r 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 mo...

Страница 6: ...utputs 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 o...

Страница 7: ...IDGE 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...

Страница 8: ...u 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...

Страница 9: ...OOFER 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 Positi...

Страница 10: ...aker 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 PROTECT...

Страница 11: ...rmonic 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...

Страница 12: ...Professional Power Amplifiers UNiKA...

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