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SOLIDYNE

 

AUDIMAX 362 

Pág. 13

 

Chapter 3  –  Operation

3.1 

Starting Up -  MPX level 

The first adjustment is the modulation level on the 
transmitter. For this, places all 362’s knobs to the 
center  position.  Play  on  the  air  sung  musical 
themes.  The  console  level  will  have  to  arrive  at 
the red zone of the VU-meters in the signal peaks. 
Measure the level of modulation of the FM exciter 
with  a  good  monitor  of  modulation  (like  Solidyne 
VA16)  or  use  the  modulation  meter  of  you  FM 
exciter.  Adjust  the  MPX  input  level  of  the  FM 
exciter  until  obtaining  a  modulation  of  100%  an 
the  peaks.  In  some  countries  (norms  FCC  for 
USA)  not  frequent  recurrence  peaks  of  110% are 
allowed. 

Audimax MPX output level 

(only  for  units  with  serial  number  bigger  than 
1200

).

 

Audimax  362  comes  with  a  MPX  gain 

control.  On  the  rear  panel,  you  will  find  a  preset 
that  allows  you  to  adjust  the  MPX  output  level, 
using  a  screwdriver.  This  avoids  the  use  of  the 
exciter input level.  

3.2 

Audio settings 

Audimax 362 was designed to offers an easy and 
very  intuitive  operation.  You  don’t  need  to  have 
specialized  knowledge  to  start  up  the  processor 
and  to  adjust  the  sound  settings.  Simply  begins 
placing all knobs to the center position. That is all! 
You  will  be  on-air  with  a  great  sound.  Soon  you 
will have to customise the sound according to the 
musical  style  of  your  radio,  for  which  we 
recommends 

you 

to 

read 

the 

following 

explanations kindly. 

3.2.1  Input level 

Audimax  362  has  an  automated  control  for  the 
input  level.  You  can  connect  from  non-
professional  consoles,  with  output  level  of  -10 
dBv,  to  professional  broadcast  consoles  with 
+8dBm  output  level. The AudiMax input level will 
adjust automatically. 

The  automated  input  level  control  eliminates 
variations  of  level  due  to  badly  use  of  the  air 
console  on  the  part  of  the  DJ’s  or  inexperienced 
operators.  That  is  to  say:  if  the  level  from  the 
console  stays  very  low  by  several  minutes, 
Audimax  will  compensate  its  input  to  maintain 
uniform the output level. 

3.2.2  Customizing the sound 

All  adjustments  are  made  from  seven  knobs 
located in the front panel.  

 
Dynamic Equalizer

 section is a 3-bands dynamic 

audio  equalizer  that  allows  reinforcing  certain 
frequencies,  generally  the  bass,  to  have  a  sound 
with  ‘punch’  basses,  ideal  for  the  car-stereos. 
Unlike the conventional EQ’s, whose action is lost 
for high levels of modulation, this EQ emphasizes 
its action when higher is the modulation. 

To  adjust  the  dynamic  EQ,  make  sure  that  the 
multiband  compressor  is  operating.  For  this,  see 
the  LED’s  meters  located  at  the  right;  the  yellow 
LED’s must be illuminated; being able to blink the 
greens. 

In  these  conditions,  turns  the  Dynamic  Equalizer 
knobs  (low, mid and hi). Turning the knobs to the 
left,  the  response  of  the  dynamic  EQ  will  be  flat. 
Turning the knobs to the right, a boost in this band 
takes place. When you boost a band, the action of 
the compressor for this band increases. 

The 

Band  Energy

  section  increases  the  peaks 

density  for  the  band,  achieving  high  loudness 
signals.  This  control  changes  the  recovery  times 
of  the  audio  compressors.  It  must  be  settled 
according  to  the  musical  style  and  the  kind  of 
sound  that  you’re  looking  for  your  radio: compact 
with high loudness and “punch'’, turning the knobs 
to the right (fast recovery times); or more soft and 
smoothly, with the knobs at the left (slow recovery 
times). 

Multiband  Compressor

  is  the  core  of  the 

processing  system,  constituted  by  3  independent 
audio  compressors  that  works  on  3  frequency 
bands: Low, Mid and Highs. 

Summary of Contents for AUDIMAX 362

Page 1: ...3 bands audio processor for FM Users manual 3 de Febrero 3254 1429 Buenos Aires Argentina Tel 54 11 4702 0090 e mail info solidynepro com Fax 54 11 4702 2375 Web www SolidynePRO com Last revision 2001...

Page 2: ...P g 2 AUDIMAX 362 SOLIDYNE...

Page 3: ...Introduction 8 2 2 2 Blocks Diagram 9 1 2 Processing Stages 9 Stage 1 Peak Asymmetry Canceller 9 Stage 2 Input Expander 9 Stage 3 Level Input Control 10 Stage 4 Multiband Compressors 10 Stage 7 Stereo...

Page 4: ...P g 4 AUDIMAX 362 SOLIDYNE...

Page 5: ...ded twisted pair audio cables of good quality for audio connections microphone type Input and output connectors are XLR type as is standard female for the inputs and male for the outputs Connect as th...

Page 6: ...f electromagnetic type They handle line levels of the order of 10dBv 0 36 Volts The connectors typically used on this kind of units are RCA o male plugs TRS 2 7 3 Unbalanced output to balanced input I...

Page 7: ...duced internationally see mentioned article AES Today Orban Omnia Aphex etc use our ideas The concept of psychoacoustic processing is simple in essence although of complex accomplishment It consists o...

Page 8: ...x 362 has a great advantage it does not have critical adjustments This means that in any position of his controls always it sounds well The adjustment can be made then by inexpert people Simply taking...

Page 9: ...ry canceller is used This technique based in a discovery of the Dr Leonard Kahn acquires international validity with the work of Oscar Bonello published at the Journal of AES Vol 24 5 in which it is d...

Page 10: ...ble sensation produced by the level variations of an audio signal is related to the changes happened in the first 50 milliseconds and is little dependent of the reached final value This implies that a...

Page 11: ...ore a frequency band is emphasized grater is the action of the audio compressor previous to the transmitter for that band Equalize a band implies to unbalance the entire audio spectrum It doesn t happ...

Page 12: ...hat normally is wasted Audimax 362 processor uses a MPX Processing technology named Super Modulation This processing consists on a system that controls the peaks operating at 608 Khz eliminating the p...

Page 13: ...ll adjust automatically The automated input level control eliminates variations of level due to badly use of the air console on the part of the DJ s or inexperienced operators That is to say if the le...

Page 14: ...ing you will obtain a very hard sound on the air with high energy but too compressed smaller dynamic range and with less definition more clipping Normally an suitable level is obtained when the indica...

Page 15: ...WLEDGE OF THE MATRIX STEREO THEORY OR DON T HAVE THE APPROPRIATE MEASUREMENT SET DO NOT INTEND TO CALIBRATE THE STEREO CODER 4 1 Test points diagram components side 4 2 Verify Pilot Level a Connect to...

Page 16: ...th trigger level the center of the wave in order to have it centered at screen Adjust vertical sensitivity to 50 mV Div You must get a signal like FIG 2 If not you must do a slight change in the frequ...

Page 17: ...floor at 0 01 in order to measure the real distortion of 362 stereo coder is recommended to use a procedure not based on modulation monitors Proceed this way a Connect to ground Test Point TP1 in ord...

Page 18: ...SOLIDYNE AUDIMAX 362 P g 18...

Page 19: ...ompressors 3 bands 18 dB octave Linear Phase crossover Compressors 30 dB full range 5 1 slope Automatic attack time Release controlled by Energy panel controls IM Cancelled Clipper IM attenuation 30 d...

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