background image

I

0

INPUT

 

A

STEREO

PARALLEL

BRIDGE

C&D

A&B

 Output:A

Output:A 

1+:HOT
1- :COLD

 Output:B

Output:B 

1+:HOT
1- :COLD

 
Output:A

1+:HOT
2- :COLD

 [BRIDGE]

 
Input:A,

Output:C 

1+:HOT
1- :COLD

Output:D 

1+:HOT
1- :COLD

 Output:C

 Output:D

INPUT

 

B

INPUT

 

C

INPUT

 

D

 
Output:C

1+:HOT
2- :COLD

 [BRIDGE]

 
Input:C,

2

Ω

2

Ω

0.775V

0V

32dB

100VAC-240VAC

50Hz-60Hz

PUSH

PUSH

PUSH

PUSH

Input sensi vity choice;

     The input sensi vity choice of this device is 0.775V( factory se ng ),1V,32dB

0.775V

1V

32dB

Input mode choice
Stereo mode( factory mode)

     When set as the figure, channels A and B are in stereo mode, set 
each channel volume directly. Opera on of Channels C and D 
will be the same;

Parallel mode

    When set as the figure, channels A and B are in parallel mode, input 
signal  into  channel  A 

then  both,  A  and  B channels use the same signal 

Set  each  channel  volume  directly.  Opera on  of 
Channels C and Channel D will be the same.

Bridge mode

       When set as the figure, channels A and B are in bridge mode, input 
signal into channel A, channels A and B will operate as a mono 
output, volume control of Channel A will manage both channels. Opera on of 
Channels C and Channel D will be the same.

STEREO

PARALLEL

BRIDGE

STEREO

PARALLEL

BRIDGE

STEREO

PARALLEL

BRIDGE

FRONT PANEL

A) Level control

Four level potentiometers are located at the front panel 
providing individual channel attenuation. Level range 
varies from - 50dB to 0dB. The 12 o´clock position equals 
to -25dB attenuation

B) Power ON Indicator

 This LED lights when the mains  switch is pressed. If it does 
not light up, the unit is not connected to the mains or the 
mains fuse has blown.

C) Signal indicator

This LED lights up if signal is detected at the amplier´s 
output channel. The indicator goes off when no signal or 
when  a  protective  circuit  has  been  activated  in  the 
amplifier.

D) Limit

This  LED  lights  up  if  the  limiter  threshold  has  been 
reached and the amplifier is being operated at the clip 
level. When the LED flashes permanently the volume of 
the  input  audio  source  should  be  reduced  or  the  gain 
control  of  the  amplif ier´s  channel  turned  counter 
clockwise.

E) Power Switch

The unit is switched on by the use of the power switch. 
Loudspeaker outputs are switched on via delayed relays in 
order to avoid audible transients. 

A

B

C

E

D

REAR PANEL

9

EP series / 

User’s Manual

Summary of Contents for EP Series

Page 1: ...User s Manual Before operating the device please read the Safety precautions section of this manual Retain this manual for future reference EP 450 EP 2K4 EP 6K4 EP 10K4 EP 22K4 EP SERIES...

Page 2: ...ION INTRODUCTION 6 7 FRONT PANEL 7 8 8 9 10 REAR PANEL 3 SAFETY PRECAUTIONS 4 WARRANTY 5 DECLARATION OF CONFORMITY 12 SPECIFICATIONS 12 LINE DRAWINGS 14 ANNEX Line connections unbalanced and balanced...

Page 3: ...when unused for long periods of time Do not install near any heat sources such as radiators stoves or other apparatus that produce heat Do not block any ventilation openings install in accordance wit...

Page 4: ...ct use of the product All warranty repairs must be exclusively undertaken by the factory or any of its authorised service centers To claim a warranty repair do not open or intend to repair the product...

Page 5: ...on requirements EN 55103 2 2009 Electromagnetic compatibility Product family standard for audio video audio visual and entertainment lighting control apparatus for professional use Part 2 Immunity EN...

Page 6: ...periodically e g 12 24 months Filters in ampli ers located in more dirty atmospheres may require more f requent maintenance The lter should be dry cleaned using a vacuum cleaner preferably Running th...

Page 7: ...amplifier is turned on mute leds will appear active red while the amplifier is doing an auto test After three seconds the MUTE leds will be deactivated E Bride Mode When active rear panel dips the led...

Page 8: ...connecting pins 1 NL4 connectors for outputs A and C include 4 active connecting pins 1 and 2 By doing this the user may have all the four output channels connected to 2 cables When using channels in...

Page 9: ...hannel A will manage both channels Opera on of Channels C and Channel D will be the same STEREO PARALLEL BRIDGE STEREO PARALLEL BRIDGE STEREO PARALLEL BRIDGE FRONT PANEL A Level control Four level pot...

Page 10: ...ability Hard or Soft limiting mode When hard mode is enabled the attack time of the limiter is shorter and allows less peaks to be driven to the load Gain Globally affects all channels From 23 dB to 4...

Page 11: ...ot Pin 3 Cold Unbalanced Input Connections These type of connection is not recommended for professional audio applications as it may cause noise in the installation Cables and Output Connectors Use on...

Page 12: ...rcuitry Frequency Response Voltage Gain Controls Cooling Amplifier Protections LED Indicators Audio Signal Input Connectors Speaker Output Connectors AC Power Requirements 115A 4 Switched Amplificatio...

Page 13: ...output channles 3 Turnup the level from the source 4 Change the amplifier s mode from Stereo to Bridge 100 70V 1 Read the appendix of this manual to make a correct unbalanced to balanced cable 2 Conn...

Page 14: ...ut the two signals get summed with opposite sign so that noise is cancelled out while the programme signal doubles in level Most professional audio devices use balanced inputs and outputs Connectors t...

Page 15: ...NC 6900 NW 52th Street Miami FL 33166 U S A TOLL FREE 1 888 DAS 4 USA DAS Audio Asia PTE LTD 3 Temasek Avenue Centennial Tower 34 36 Singapore 039190 Tel 65 6549 7760 DAS do Brasil LTDA Rua Dos Andrad...

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