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Stereo Link: Depressing the Stereo Link switch links the two compressor
channels for stereo operation.  In stereo mode, the compressor will react to
either channel, while reducing gain in both channels.  Both channels of the
866 are identical in control and function EXCEPT when placed in the stereo
mode.  In stereo mode, the channel 1 controls become the master controls for
both channels, while the Input Gain controls remain independent for each
channel.

The rear panel inputs and outputs and their functions are as follows:

Input: The inputs of the 866 will accept line level signals, either balanced or
unbalanced.  A 1/4" tip-ring-sleeve phone jack and an RCA phono jack are pro-
vided for each input.  Using the 1/4" input jack disconnects the RCA input jack.

Output: The outputs of the 866 will drive either balanced or unbalanced lines.
A 1/4" tip-ring-sleeve phone jack and an RCA phono jack are provided for each
output.  Both the 1/4" phone jacks and the RCA jacks may be used at the same
time.

Side Chain Input: Allows access to the signal detector circuit of the com-
pressor, permitting control of the compressor with another signal for such
applications as "ducking".  When used with the Side Chain Output, the original
input signal can be modified for applications such as "de-essing".  Inserting a
plug into this jack opens the internal side chain path so that the detector will
only respond to the signal at this jack.  In the stereo mode, both channels of
the compressor react as one.

Side Chain Output: The Side Chain Output is the buffered output normally fed
to the detector.  It is used in conjunction with the Side Chain Input to modify
the detector signal for special applications such as "ducking" and "de-essing".
For these applications, the Side Chain Output signal is sent to a signal proces-
sor and returned through the Side Chain Input.

A

PPLICATIONS

The flexibility of the 866 allows it to perform many signal processing tasks
with equal ease and clarity.  Here are a few concepts necessary to understand
before using the 866.

Two of the most common applications for the 866 are simple compression
and limiting.  Compression and limiting are performed in a similar manner,
with two important differences: the Compressor Threshold level and the ratio
settings for compression are usually much lower than for limiting.

Signal Processors 18-0121-B  6/8/99  10:25 AM  Page 22

Содержание 834 II Series

Страница 1: ...C O N T E N T S R T A S E R I E S I I 2 8 3 4 8 3 5 S E R I E S I I 11 8 4 4 S E R I E S I I 17 8 6 6 S E R I E S I I 20 1 Signal Processors 18 0121 B 6 8 99 10 24 AM Page 1...

Страница 2: ...POWER SOCKET Do not use the mains plug without the fuse cover in place Replacement fuse covers can be obtained from your local retailer Replacement fuses are 13 amps and MUST be ASTA approved to BS13...

Страница 3: ...are should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings POWER SOURCES The appliance should be connected to a power supply only of the type descr...

Страница 4: ...it covers The RTA Series II includes a calibrated audio measurement microphone This microphone is equipped with a 40 foot cable which enables you to position the microphone in several locations in the...

Страница 5: ...trol This control sets the input level from the calibrated microphone input jack the line level input jack or the auxiliary microphone input jack Use this control to set the response of the display to...

Страница 6: ...ound In order to make the necessary changes of frequency response in an audio system you will need to have either a graphic equalizer or parametric equalizer Since the RTA measures in 1 3rd octave inc...

Страница 7: ...with an indoor sys tem so that you make the first adjustments to the system inside this critical distance before the reverberation of the room environment has a chance to affect the response of the sy...

Страница 8: ...st the monitors Make sure that you turn down the input to the system then increase the pink noise level to a convenient measuring level Use just enough level from the RTA to overcome any ambient room...

Страница 9: ...sound This is the best way to minimize feedback and get the highest sound level from the monitors but you will sacrifice some sound quality Once you ve equalized the system with one of the above proce...

Страница 10: ...electret condenser type RTA powered Microphone Sensitivity 64 dB 3 dB 0dB 1V bar 1kHz Microphone Frequency Response 20 Hz to 20 kHz 1 dB Auxiliary Microphone Input XLR type connector balanced Auxiliar...

Страница 11: ...els as a full range amplified system with more power The greatest power demands in a sound system are made by the low fre quencies of the program material This is because music and voice signals cont...

Страница 12: ...power cord away from audio lines and plug into a convenient outlet Connect audio lines to the crossover using the appropriate input jacks to channels 1 and 2 for stereo operation or to channel 1 only...

Страница 13: ...r speaker and driver manufacturer s specifications for the recom mended crossover frequencies Basic setup procedures for the crossovers are as follows Label each power amplifier for its respective fre...

Страница 14: ...ied from 100 Hz to 10 kHz Connect the outputs of the crossover to the appropriate amplifiers THE POWER AMPLIFIERS SHOULD STILL BE UNPOWERED Check to see that all crossover level controls are set to an...

Страница 15: ...tereo Mono switch LED indicator lit When operating the crossover in stereo mode the MID HIGH frequency control of the 834 is vari able from 75 kHz 7 5 kHz When operating the crossover in mono mode the...

Страница 16: ...ced unbalanced connections Outputs 1 4 tip ring sleeve phone jacks for balanced connections and 1 4 tip sleeve phone jacks for unbalanced con nections 835 XLR Inputs balanced female XLR Outputs balanc...

Страница 17: ...nput and output jacks are made using balanced tip ring sleeve or unbalanced 1 4 tip sleeve phone plugs FOR BALANCED CONNECTION wire the plug as follows Tip high Ring low Sleeve ground FOR UNBALANCED C...

Страница 18: ...ions of speech such as ends of sentences This choppiness can be cor rected by lowering the Threshold This will still yield good noise gating per formance without cutting off the voice The Ext Key func...

Страница 19: ...the gate You may find something you like The Control output is a unique feature of the 844 Series II This output can be used to trigger a drum machine or sequencer in time with whatever is input into...

Страница 20: ...cks on the compressor FOR BALANCED CONNECTION Use 1 4 tip ring sleeve phone plugs wired as follows tip high ring low sleeve ground FOR UNBALANCED CONNECTION use either 1 4 mono phone plugs or RCA phon...

Страница 21: ...al above the Compressor Threshold level setting Attack This control adjusts the speed with which the compressor reacts to an increase in input signal level above the threshold Shorter attack time set...

Страница 22: ...ng control of the compressor with another signal for such applications as ducking When used with the Side Chain Output the original input signal can be modified for applications such as de essing Inse...

Страница 23: ...erall dynamic range of a signal while still preserving the nat ural open feel of the sound For limiting the Attack time should be short so that potentially damaging transients don t get past the limit...

Страница 24: ...ll signals will pass through The Output Gain control allows the user to make up for gain lost in the com pression process and to set the output level of the compressor for compati bility with other eq...

Страница 25: ...signal This is done by inserting the control signal into the Side Chain Input Ducking is a good example of this type of application Ducking is simply gain reduction of a signal when another is presen...

Страница 26: ...dB Input Impedance 20 K unbalanced 40k balanced Maximum Input Level 21 dBu ref 0 775 Vrms Output Impedance 51 unbalanced 102 balanced Maximum Output Level 21 dBu ref 0 775 Vrms Side Chain Input Imped...

Страница 27: ...C C C C O O O O R R R R P P P P O O O O R R R R A A A A T T T T I I I I O O O O N N N N O O O OW W W WN N N NE E E ER R R R S S S S M M M MA A A AN N N NU U U UA A A AL L L L S S S SI I I IG G G GN N...

Страница 28: ...L DISTRIBUTION 3 OVERLOOK DR UNIT 4 AMHERST NEW HAMPSHIRE 03031 U S A FAX 603 672 4246 DOD IS A REGISTERED TRADEMARK OF DOD ELECTRONICS 1994 DOD ELECTRONICS CORPORATION PRINTED IN U S A 2 94 MANUFACTU...

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