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FEATURES

10

STEREO

When the LINK push-button is engaged and the two channels, A and B, set to approximately the 

same values, GAIN control on both channels will be the same to preserve stereo balance, levels 

normally being controlled by the channel with the higher signal level.

DUCKING

When  the  LINK  push-button  is 

engaged,  the  signal  passing 

through channel A, may be used 

to  control  the  amplitude  of 

channel  B.  For  example,  the 

level of music through channel A can be controlled by speech on channel B, i.e. reducing the music 

level to make a "speech-over" announcement.

METERS

 

Two LED METERS are provided, OUTPUT LEVEL and GAIN REDUCTION.  

These are switched between channel A and channel B on the central METER SELECT push-button.

OUTPUT LEVEL

 indicates the actual output level in dBu.  

The GREEN segments cover the range from -10 to +10 dBu.  

The YELLOW segments cover the range from +10 to +20 dBu and the RED segment, +22 dBu and 

above which is regarded as overload.

REDUCTION

 is calibrated in dB covering the range 1 to 22 dB, reading backwards.

This meter indicates the amount of actual reduction taking place and therefore is a valuable point of 

reference indicating the operation point of the 5043.

 

COMP

DUO

5043

METERS

A

IN

GAIN

LINK

THRESHOLD

RATIO

+

22

-

36

-

10

8

+

20dB

-6

4

75

20ms

40

50

2.5s

100ms

250

500

The

Portico

Series

22

A

B

1:1

LIMIT

2:1

3:1

8:1

IN

GAIN

LINK

THRESHOLD

+

8

BUSS INPUT

75

20ms

40

50

2.5s

100ms

250

500

FB

-3

14

RATIO

1:1

LIMIT

2:1

3:1

8:1

-10

12 16

15 12

8

18

4

0dB

14

0dB

-

20

+

22

-

36

-

10

14

0dB

-

20

9 6 3 2 1

22

BUSS INPUT

8

0

+

20dB

-6

4

-3

14

8

0

FB

ATTACK

RELEASE

ATTACK

RELEASE

REDUCTION

OUTPUT LEVEL

RUPERT

NEVE

DESIGNS

SELECT

B

Содержание Portico 5043

Страница 1: ......

Страница 2: ...an produce noise crackles etc SWITCH OFF IMMEDIATELY because once current starts to flow the mixture hardens can get very hot burnt toffee and cause permanent and costly damage If it gets wet and you...

Страница 3: ...at has enough capacity to power your PorticoTM 5043 or your complete assembly of PorticoTM modules for the expected duration of your session THE NEED FOR DYNAMIC CONTROL OF SOUND LEVELS The dynamic ra...

Страница 4: ...ssor Limiter Duo Front Panel 5043 Compressor Limiter Duo Back Panel DC input jack 2 1 x 5 5 x 9 5mm Center Positive FB Changes the operation from FeedFoward to FeedBack Buss Input Toggles between Line...

Страница 5: ...t behaves at high levels For low distortion an analog amplifier must have a linear transfer characteristic in other words the output signal must be an exact replica of the input signal differing only...

Страница 6: ...tted The Portico 5043 embodies two independent Compressor Limiters A and B They can be used independently or connected in sequence to provide two separate control slopes The D C control circuits may b...

Страница 7: ...sor The two compression characteristics are quite different there is more overshoot and both the attack and recovery ramps are changed providing the user with powerful choices A choice between Feed Fo...

Страница 8: ...rovides a linear path allowing signals to be amplified without the gain being adjusted in any way When signals exceed the threshold level the gain is reduced in a controlled manner that depends on the...

Страница 9: ...en speech syllables The ATTACK time is the time taken for the compression circuits to start compressing A long ATTACK time allows short duration peaks to escape and go through uncompressed This may ca...

Страница 10: ...y be fed to the Buss Input to provide high performance mixing that is intended to provide sub group mixing in a console configuration COMPOSITE OPERATION Cascading the two sections A and B of the Port...

Страница 11: ...utton OUTPUT LEVEL indicates the actual output level in dBu The GREEN segments cover the range from 10 to 10 dBu The YELLOW segments cover the range from 10 to 20 dBu and the RED segment 22 dBu and ab...

Страница 12: ...XLR input or Buss Input jacks to accept Portico series Buss Outputs Maximum Output Level Balanced and Floating Transformer Output 25 dBu Total Harmonic Distortion and Noise 2kHz 20 dBu output level no...

Страница 13: ...INPUT TRANSFORMER GAIN OUTPUT TRANSFORMER LINE IN OUTPUT LEVEL BLOCK DIAGRAM IN METERS REDUCTION BUSS IN A B ATTACK RELEASE THRESHOLD RECTIFIER FB VCA FROM CH B RECTIFIER FROM CH B OUTPUT LINK LINK T...

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