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A further specialty is the integrated auto-threshold-function which makes
processing independent of the input level. Even when the speaker or singer
does not maintain a constant distance to the microphone, processing is
retained at the pre-set S-reduction value. Conventional systems are depen-
dent on the input level and work more intensively as the distance to the
microphone is reduced.

The insert button activates any attachments of external equipments for
effects, equalizing or compression that are connected to the Insert
Send/Return loop on the rear of the Channel One. This binds them into the
signal chain thereby enhancing the processing capabilities ad infinitum.

The Insert point is located between the De-Esser and compressor. This

allows the ability to use the pre-amplifier stage/de-esser combination of the
Channel One separately from the compressor/EQ combination which,
because in this manner the Channel One can be used as 2 independent
units, broadens the range of uses enormously.

As long as units are not connected to the insert loop the signal flow is not

interrupted, even when the Insert button is pressed. The most flexible
method of use with the balanced designed insert sockets is to be achieved
by connection to a patch bay.

On

The On button activates the Compressor/Limiter/Noise Gate module. At the
same time the Gain Reduction display shows the processing intensity (see
section ”Gain Reduction” on page 13).

Usually the signal flow follows the design of the Channel One and for this

reason the input signal normally arises from the De-Esser or, when activated,
from the Insert. However with the Pre Comp. switch function of the Equalizer
module the Compressor/Limiter can be switched behind the Equalizer. This
allows it to be used either as an final compressor or limiter. (Further informa-
tion in the section ”Pre Comp.” on page 15).

12

Operation

De-Esser

Operation

Insert

Operation

Compressor/Limiter

Содержание 9945

Страница 1: ...Model 9945 Manual Channel Strip...

Страница 2: ...imitations of Liability In no event will SPL be liable for any damages including loss of data lost profits cost of cover or other special incidental consequential or indirect damages arising from the...

Страница 3: ...ng De Esser 11 Insert Insert 12 Compressor Limiter On 12 Limit Gain Reduction Noise Gate 13 Make Up Technical Information regarding the Compressor Limiter 14 Equalizer On Pre Comp Air Band 15 Mid Hi B...

Страница 4: ...s for sound processing the total bandwidth of subtle corrections to low fidelity sounds is available The versatility and completeness of the unit permits its use in additional areas over and above the...

Страница 5: ...l One The unit should be situated away from heat sources and direct sunlight Avoid installation in environments exposed to vibrations dust heat cold or moisture Keep the unit away from transformers or...

Страница 6: ...6 Connections Rear Front Wiring...

Страница 7: ...e Mic connector is used to plug in microphones of any type dynamic condenser or tube microphones etc If 48 V phantom power is required for some mics switch on the 48 V button For further information p...

Страница 8: ...o both channels of the converter The maximum input level should not exceed 12 dBu to avoid clipping of the converter 12 dBu represents the digital full scale level 0 dBfs Playback Inputs The playback...

Страница 9: ...re is to be adhered to Firstly connect the microphone to the Channel One then switch on the phantom power you can now commence work When recording has been completed firstly switch off the phantom pow...

Страница 10: ...The Clip LED will warn you of potential peaks if during recording the Clip LED illuminates the preamplifying value is to be reduced accordingly Instrument Line On Mic Off This button allows selection...

Страница 11: ...y band of about 2 octaves with compressor techniques the Auto Dynamic De Esser utilizes filters that process only the reducible S frequencies but do not interfere with the remainder of the spectrum Th...

Страница 12: ...essor EQ combination which because in this manner the Channel One can be used as 2 independent units broadens the range of uses enormously As long as units are not connected to the insert loop the sig...

Страница 13: ...in the display field is of great assistance The effect on the selected compression rate is scaled in 1 5 dB steps Depending on signal source and dynamic structure the reduction values should lie betwe...

Страница 14: ...t distortions Even the control of the release time is dependent on the input signal Fast and large level fluctuations are correspondingly processed with shorter time constants than minor fluctuations...

Страница 15: ...within certain frequency ranges these ranges should first be reduced with the EQ The signal can subsequently be compressed more easily If not done in this sequence the compressor would react very stro...

Страница 16: ...constant Q filters if a more thorough setting has been chosen this will lead to far preciser definition of the frequency range to be processed This in turn minimizes influences from adjacent ranges Th...

Страница 17: ...distinctly perceptible harmonics The distortion stage is located in front of the equa lizer so that the even newly created spectrums can be processed with the EQ The overmodulated field effect transis...

Страница 18: ...signal when activated the PPM Output display does not show any values An instance of a sensible application could possibly be when the output signal of the Channel One together with the playback sign...

Страница 19: ...ing starts whether he can hear himself and the playback adequately The best conditions for good intonation stemming from a relaxed working environment prevail Another practical use of the headphone mo...

Страница 20: ...rdriven Microphone Instrument Line Gain an excessive Make Up value in the Compressor Limiter too much boost in the EQs or too high output level Possible causes of overload can be quickly detected by s...

Страница 21: ...ly 6 dB so that the output value can exceed this limit without causing clipping The range of optimal noise performance lies between 0 and 9 dB Built around a torroidal transformer the power supply all...

Страница 22: ...rument Input Frequency Response 10 Hz 100 kHz 100kHz 3dB Common Mode Rejection 1 kHz 80 dB 10 kHz 78 dB 0dBu only Line Input THD N Amplification A weighted 5 dB 99 4 dBu 20 dB 97 2 dBu 42 dB 79 4 dBu...

Страница 23: ...23 Block Diagram Channel One Model 9945 1999 SPL electronics GmbH...

Страница 24: ...imiter The reference curve A displays the relation between input and output Curve B shows the curve characteristics of the Compressor The soft knee characteristic is clearly visible Curve C portrays t...

Страница 25: ...ous cut and boost settings of the Mid Hi filter at 3 kHz The proportional Q characteristic is distinctly visible Diagram 4 displays the curves of the Low Band filter Various cut and boost settings at...

Страница 26: ...authorized SPL warranty repair facility in the country where purchased or to the SPL factory in Germany in the original packaging or a replacement supplied by SPL with all transportation costs and ful...

Страница 27: ...27 Copy Master...

Страница 28: ...28 Manual Notes...

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