AAton Cantar-X User Manual
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Cantar v1.29 user manual 2004 Sept 28 p.10TestMicrophone Prep.10 o’clockThis position opens access tothe classical audio tests. It isimportant to properly feed theCantar mic-preamps which offer the longest dynamicrange in one go with no pre-conditionners.Audio inputsFive microphonesM1, M2 and M5 on XLR3,M3 & M4 on an XLR5.Four linesL1 & L2 on an XLR5, L3 and L4 on an XLR5.Eight AES-INTascam SubD25 (see pin-outs page 26).Dynamic or Phantom micsThe default setting is Phantom.48V on all mic inputs.When connecting a dynamic microphone switch-offthe phantom supply; the mic preamp gain is boostedby12dB. Press [shift] (blue button) and button [2].When the phantom power is desactivated, the smalltriangle disappears from below the mic number onthe rightmost circular display.LimitersPress button [1] to on/off activate the limiter. Atriangle (dis)appears below the mic number onthe leftmost circular display. When the signal levelreaches the limiter zone (–8dB), the triangle startsblinking. In 24bit recording mode it is commonpractice to adjust the input gain so that a ‘normal’signal does not go over the –20dB level. When thelimiter is activated, the 32dB head-room above the–8dB kick-in point gives 24dB above the ‘no-limiter’full scale. Thus the operator can count on a 44dBreserve over the normal’–20dB level. If the signaldoes reach the -1dB level, a CLIP icon appears atthe end of the modulometer scale and a beep canbe sent to the headphones.The same limiting signal is applied to gangedpreamps.Filters and AttenuatorsThe high-pass filter default setting is ‘linear’ on all micinputs. Press the mic fader button [2] and rotate thejog to select a corner frequency/slope. A first bankshows in the message panel it goes from 60Hz/-6dBto 180Hz/-12dB and LFA, a second bank, identical tothe first one activates a -10dB attenuator which con-verts the mic input into a line-input. While pressedthe button activates the solo-mic.Note: to handle signals coming out of devices gene-rating high line-out levels, the best solution is toinsert an external -26dB XLR3-XLR3 attenuator onthe mic input.Mic CouplingThe five coupling types M1–>M2 and M3–>M4, orM1–>M2-M3 or M1–>M2-M3-M4 or M1–>M2-M3-M4-M5 are selected in the main selector AUDIO.Phantom, Limiter and Highpass-Filters are identicallyapplied to coupled preamps. Phase inverters remainindependant.Stereo-pairsTo link M1–>M2 (or M3–>M4) mic pairs, simulta-neously press [Shift] and button [3]. Same operationto delink. The left fader becomes the master, theright fader the ±12dB balance.Surround soundsM1 (black rectangle marked) always is the master. Toactivate the coupling press the button [3] betweenthe M1 and M2 faders. The slaved fader tuning rangeis 12dB either side of the master set value.To protect the tuning of a slaved preamp the modi-fications can only be done while pressing its faderbutton [2]. The memorized gain value is displayed indB on the control panel, the physical position of thefader is shown by < > signs. There is no suddenlevel change if re-activation takes place when thefader has been put back into its < | > memorizedvalue. |
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