AUDIMAX 362 HD, Owner'S Manual

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Page 2: ...Page 2 Audimax 362HD SOLIDYNE ...

Page 3: ...USB for external streaming 8 1 6 2 Retransmission of incoming streaming 9 1 6 3 As audio processor 10 Chapter 2 Using the processor 11 2 1 MPX level 11 2 2 Audio settings 11 2 2 1 Input level 11 2 2 2 Customizing the sound 11 Chapter 3 Theory of audio processors 13 3 1 A brief story 13 3 2 Audimax 362HDHD overview 14 3 2 1 Introduction 14 3 2 2 Blocks Diagram 14 3 2 3 PROCESSING STAGES 15 Stage 1 ...

Page 4: ...be used on a table or desktop quitting the lateral supports o The room temperature must be between 5 and 40 C 41 104 F Avoid the direct solar ray incidence on the equipment Avoid the proximity of heat sources and high electromagnetic fields high power transformers motors etc 462 MKII have internal protection against RF fields that allows assembly it next to AM FM RF amplifiers o The installation i...

Page 5: ...ed twisted pair STP With the arriving of audio over IP AoIP several companies start to use RJ 45 and multipair shielded cable to replace to the different traditional audio connectors in order to standardize all in one type of connector and cable In fixed installations like radio stations the use of connectors RJ45 presents several advantages respect to the traditional connectors a unique cable is ...

Page 6: ...rophone device the recordings will be mono the same signal in both channels To correct this Control Panel Sound Record choose the USB device shown as USB microphone and click Properties Then select the tab Advanced display the menu of formatting options and choose a format for stereo recording 2 channels 16 bits 44100Hz 1 3 Modo HD High Definition HD mode is suitable for audio applications where t...

Page 7: ...ulation level you can proceed to customize the sound of the radio adjusting 362HD Audimax controls Obviously this does not affect modulation adjustment because the processor delivers a constant level signal peak To set the personality of sound in air proceed as described in 2 2 Audio settings 1 5 ADITIONAL TECHNICAL INFORMATION Balanced and unbalanced I O In the following paragraphs you will find ...

Page 8: ...ives PGM audio via a point to point which can be RF audio digital audio via optical fiber or UHF see the link Solidyne ADA102 STL 1 6 1 1 USB for external streaming Requires Solidyne Audimax 362 HD USB Using USB is independent from MPX This makes it possible to use the same audio processing on the air and on the webcast The processor receives the program signal by the analog inputs and outputs the...

Page 9: ...n station head station either via the Internet or LAN Decodes it and sends it as PCM signal to the Audimax 362HD USB processor through the USB connection The audio is processed and sent through the MPX outputs to the FM transmitter The following diagram shows the signal flow for this configuration We recommend installing any software on the remote computer access to streaming encoder monitoring re...

Page 10: ...in 2 to 3 dB required to prevent digital clipping in overshoot which enables transmission over the Internet with high loudness levels Pre processing of audio in mobil units Sound reinforcement for small shows rehearsal hall When the Audimax operates in HD mode a soft clipper on audio outputs is coupled to limit peaks that cross the multiband compressor This ensures that no overshoot they reach the...

Page 11: ...ing audio peaks or always on The third LED red should never be turned on permanently 2 2 2 Customizing the sound All adjustments are made from seven knobs located in the front panel The stage Dynamic Equalizer is a 3 bands dynamic audio equalizer that allows reinforcing certain frequencies usually the bass to have a sound with punch ideal for the car stereos Unlike the conventional EQ s whose acti...

Page 12: ...rmally a suitable level is obtained when the indicators LED s of the multiband compressor act without light the red LED Very important note In order to the Dynamic EQ and Band Energy take effect is necessary that the multiband compressor works That is to say in all bands the first LED must be lights and still better the second too If the compressors don t works the others controls don t take effec...

Page 13: ... through 30 000 nervous fibers originating at the Basilar membrane Then it will be possible to be computed the auditory reactions and to be governed all the aspects of the audio processing This way the electronic system works transforming the original signal into another one of greater energy and greater quality of sound Then it will be possible to reduce the dynamic range of the audio signals to ...

Page 14: ...duction The Audimax 362HD has 7 processing stages and the stereo coder Its main characteristic is the ease of use because it doesn t require a specialized technician to start up and to adjust the unit and neither it has the critical Input level control since an automatic system adapts the input gain to the output level of any audio console avoiding the more frequent operational errors His low cost...

Page 15: ...high level passages consequently increases the relative level of the passages of low level and therefore the noise This is a forced consequence of the compression process that has particular effect in the increasing of the ambient noise of the microphones To avoid this Solidyne processors incorporate a linear expander previous to the compressor stage The concept of linear expander implies an expan...

Page 16: ...w frequencies would modulate the high notes And the high notes of an instrument would as well modulate the low tones of violoncello for example 2 To increase the perceived loudness This is because most of the modulation capacity of a transmitter is generally devoted to low frequency signals of less than 160 Hertz Nevertheless this information contributes very little to the loudness sensation due t...

Page 17: ...nominated in U S A MPX Interleaving also known as peak correlation determines that the modulation peak in MPX does not coincide with the modulation peak of the stereo signal considered in independent form This means in simple terms that if the peaks of channels L and R are limited separately so that MPX signal never over modulate during most of the time the modulation capacity of the transmitter w...

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Page 19: ...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 dB below 250 Hz Dynamic EQ 0 12 dB dynamic boost at Low Mid and High Frequency Processing Power 7 stages of processing devices Power 115 V 230 V rear switch selected 50 60 Hz 20 W Dimensions 19 rack mount Module ...