M460M — Input Module

M46OM INPUT_MODULE Rj'j?7 iJ one € ':cb: -2.| ` `~` 8-109 Booster Amplifier ~anr CSt 0 at 'BfL:2 The 8-109 booster amplifier operates with gain dB and recovers the loss incurred when the fader placed its nominal 15 dB "in hand" position. 'AUo? L ) - 6 < ^ - ` Fieen "|(41 Von CHANNEL ON_Switch The CHANNEL ON switch Sw21 controls al| outputs the module with the exception the PFL and SOLO outputs and the FB,RS and PA channels the PREFADE position_ Main Quteuts and PAN Centrel The output signa the 8-109 amplifier feeds the left and right main outputs via PAN switch SW14 and PAN control R79 through R82 .

also provides the feed for the DIRECT output and via SW16, for the SOLO output. Additionally, feeds are supplied the POSTFADE RS, FB and PA channels via the appropriate switches and level controls 4e0i-3 PREIPOST Selector_Switches and Level Controls PRE/POST selection the RS FB and PA channels facilitated by switches Swi8_ SW19 Sw2o and SW4 respectively ; each switch followed by its associated level control The outputs the level controls are fed the summing outputs via individual channe assignment switches Following the assignment switches, these outputs are fed their appropriate mixing buses via summing resistors Auxiliary Functions *id Oom riji J;2n3 DC controls and log' functions are provided through the INPUT SELECTOR swi tch SW1 and the CHANNEL ON switch SW21 operate external mute control functions independently for both microphone and Iine sources as may be required particular console system Additional dc control contacts are available the SOLO switch, the PA switch the PFL switch and the CHANNEL ON switch allow operation external relays and/or iumination the CHANNEL ON button.

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8-109 AMPLIFIERSERIES The 8-109 series amplifiers are utilized as an internal component within various WBS series audio console modules. Each 8-109 amplifier mounts as plug-in assembly onto the module motherboard The 8-109 amplifier provides an actively balanced output with +30 dBm capability . employed a5 an output booster amplifier with either balanced an unbalanced input. 2co The following specifications apply the 8-109 series amplifiers.

4iw 007) 03(10 28 | Unit Lnput Gain LO / 35 77n/0 (ploan: B-109 Balanced dB Ac 01 ^ Ruji bore 193;'| 97T 8-109A Unbalanced dB Uo 70t4= - 07" dB (=h 8-109B Balanced 926:= 8-109C Balanced 39 dB " e4 "-3 8-109D Unbalanced 29 dB 09 | c;' 7*4q 8ei18-109E Balanced h9` --|` 29 dB 270.1362 Vn_ 4Ji-3 n"o JuGn 33 dB G0'vanc 8-109F Balanced 8-109G Balanced Cn" bjrs(aGr 23 dB pr" / 2 20 T~J Sht Frequency Response: +/ - 0.2 dB from Hz kHz .

( ~ . Noise: -108 dBm EIN from Hz kHz . Harmonic Distortion Less than 0.1% THD from 20 Hz +30 dBm output (typically less than mid-band) kHz 027 2 " A 9lov bca cOo .33 Source Impedance J6i2s unbalanced 600 ohms less, balanced Input mpedances Models with balanced input: Sk ohms minimum 8-109A : 30k ohms 8-109D : 4700 ohms I # 0 4 = [a 7470 - 76 130 Input Levels: D^ Depending on gain particular model and system operating levels.

(Refer gain speci- fications above. Outn I8 TLIO'u? Jr | enia ILJ Jrlucid Less than 100 ohms Jn6 bojn 'D3 {JG Output Impedance: Load Impedance: 600 ohms balanced 8-109-1-1

M46om INPUI_MODULE t Note Specifications are based on voltage levels 600 ohm systems unless otherwise specified. Mcn Input Sensitivities: 02 Line: ielo- Mic Pad 9446 Mic 20 +10 dBm (ref 600 ohm source) 20 dBm (ref 150 ohm source) ~40 dBm (ref 150 ohm source) 70 Frequency Response: +/ - 0.25 dB from Hz 20 kHz (Equalizer bypass position) "relaw Noise: -125 dBm EIN maximum SENSiTiViTY (20 Hz to 20 kHz) Harmonic Distortion: Less than 257 THD from 30 Hz 20 kHz +28 dBm or ess Less than 1% kHz at +28 dBm output.

Source Impedances: Line Mic 50/600 ohms balanced/unbalanced 150 ohms, balanced/unbalanced Input mpedances Line: Mic 0oo ohms 500 ohms Output Impedance: Less than 100 ohms (at outputs 8-109 B-109A amplifiers only ) 150 ohms sound reinforcemen output. Load Impedance: 600 ohms, balanced (at insertion point) 600 ohms balanced at sound reinforcement output. Output Level -10 dBm nominal +30 dBm maximum (at outputs 8-109 8-109A amp lifiers only ) -10 dBm nom.

sound reinforcement out- put +20 dBm maximum T-1

M46om INPUI_MODULE Phasing: 5]i0v 6szeo TGU 0t912: 2 Input and output terminals designated by numbers are Phase Power Requirements: +/- volts dc, 90 MA nominal, 250 MA maximum. 'ar Ambient Temperature: degrees Celsius Dimensions: ~J C2 { wide 14.15" high 6.5" deep (41 mm X 360 mm 165 mm) IhA ih 05 FTI jrolc" 7 Weight: 4.4 Ib. (2 kg.) (Fo;i-ua <"Jvd ~T(ViTiz3e Nu/{3I ' * &* Wi?

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4-126_EQUALIZEREILIER_AMPLIFIER The 4-126 equalizer filter amp]ifier is printed circuit board utilized a $ an interna ] component in certain WBS 460 series equa]izer modu les The 4-126 comprises three independent state variab]e filter des igned to operate in the Low FREQUENCY , MID FREQ_ekc and HIGH FREQUENCY bands 0 f the audjo spectrum respectively_ Each 0 f these three filter sections functions to pas s shaped Portion 0 f the audio spectrum thus {gnafating correction 5 1 igna] to be 5 ummed with the primary pas $ ing through the module _ In conjunction with components externa ] to the 4-126 and part 0 f the ma in module , it i5 poss jb]e to contro] the different parameters o f equalization independently 0 f each other , such a5 frequency, boost/cut and Each 0 f the three filter networks consists 0 f three opera - tiona amp)ifiers one 0 f which operate s the s umming mode with the two others functioning a $ integrators In the sum- amplifier the outputs of the two integrators are mixed #iza the origina ] filter output s igna ] the compound output in turn being fed back the integrat ing amplifiers Depending upon where the s igna 1$ inserted or withdrawn from this set 0f three operationa amplifiers band-pass high-pas $ or Tow-pass characteristics are achieved With the appropriate externa] circui try, the 4-126 can be used to generate BAND-PASS or BAND REJECTION characteristics within each 0 f the three frequency bands LOW-PASS positive or negative SHELVING characteristics _ HIGH-Pass positive or negative SHELVING characteristics _ 4-126-1-1

M4boM INPUT_MODULE 23 ) PRE/POST REV SEND switch SW18: Allows the choice the pick-off point for the REV SEND signal either prior (PRE) after (POST) the channel fader 24) PRE/POST FOLDBACK switch Sw2o: Allows the choice the pick- ofi point for the FOLDBACK signal, either prior (PRE) after (Post) the channel fader . 25 ) FOLDBACK LEVEL controls R87/88: Controls the level FB2 output buses FBI and 26 ) FOLDBACK LEVEL controls R89/90: Controls the level FBL output buses FB3 and 27) PRE/POST FOLDBACK swi tch Sw19: Allows the choice the pick- off point for the FOLDBACK signai= either prior (PRE) after (POST) the channel fader 28) HIGH FREQUENCY section BoosT/cut control R46 : Continuously variable irom -15 dB +15 dB .

Sets gain loss high frequency content the program material with reference the nominal level _ 29) MId FREQUENCY section, BoosT/cut control R55: Continuously variable from -15 dB +15 dB . Sets gain loss mid frequency content the program material with reference the nominal level . 30) Low FREQUENCY sec tion, BoOST/cut control R63: Continuously variable from dB +15 dB .

Sets gain loss Iow frequency content the program material with reference the nominal level . 31 ) PAN control R79 RB2: Positions channel signal between assign- ed mixing buses (Ieft and right) 32 ) CHANNEL ON switch Sw21 When depressed, feeds the signal main outputs well as the PA, FB, RS and SOLO outputs Additionally, Sw21 equipped with contacts provide external control functions.

Note that the PFL output not routed through Sw2i 6-3

ML6oM INPUT_MODULE 23) PRE/POST REV SEND switch SW18: Allows the choice the pick-off point for the REV SEND signal, either prior (PRE) after (POST) the channel fader 24) PRE/POST FOLDBACK switch Sw2o: Allows the choice the pick- ofi point for the FOLDBACK signa either prior (PRE) after (post the channel fader . 25 ) FOLDBACK LEVEL controls R87/88: Controls the level FB2 output buses FBI and 26 ) FOLDBACK LEVEL controls R89/90: Controls the level FBL output buses FB3 and 27) PRE/POST FOLDBACK switch Sw19: Allows the choice the pick- off point for the FOLDBACK signai= either prior (PRE) after (POST) the channel fader .

28) HIGH FREQUENCY section, BoosT/cut control R46 : Continuously variable irom dB +15 dB Sets gain loss high frequency content the program material with reference the nominal level 29) MID FREQUENCY section, BoosT/cut control R55: Continuously variable from -15 dB +15 dB . Sets gain loss mid frequency content the program material with reference the nominal level 30) Low FREQUENCY sec] tion, BoOST/cut control R63: Continuously variable from dB +15 dB _ Sets gain loss low frequency content the program material with reference the nominal level 31 ) PAN control R79 RB2: Positions channel signal between assign- ed mixing buses (left and right) 32 ) CHANNEL ON switch Sw21 When depressed, feeds the signal main outputs well as the PA, FB, RS and SOLO outputs Additionally Sw21 equipped with contacts provide externa control functions_ Note that the PFL output not routed through Sw21 6-3

control R22/23: Continuously variable from 25 400 Hz the PEAKING mode_ the frequency calibration refers the center frequency the bell-shaped PEAKING response curve. the SHELVING mode, the calibration defines the dB corner point from the maximum available SHELVING BOOST cut dB _ Jni 0 10 13) Low FREQUENCY section

R24: Allows adjustment the 0-factor the PEAK ING filter for values 10 . R24 inoperative the SHELVING mode 14) LOW FREQUENCY section, MODE SELECTOR switch SW12: When depressed the LF section the equalizer operates the SHELVING mode When released, the PEAKING mode selected. 15) EQUALIZER INSERT switch SW13: When depressed, this switch inserts the EQUALIZER section into the signal path and activates 7:w the associated LED . When released the unequalized input signal Iuqis bypassed directly the 8-109A output amplifier 44 1 | 16) PAN switch SW14: When depressed, enables PAN control (R79 R82 ) _ O` UcO_ 17) PRE FADE-LISTEN switch Sw1s: When depressed the signal origi - nating ahead the fader and CHANNEL ON switch ied the PRE output. TUj COc : 18) SOLO switch Sw16: When depressed, the signal following the fader and CHANNEL ON switch fed the SOLO output. 19) hIGH PASS FILTER control R12/13: Allows continuous adjustment cut-off point frequencies from 25 250 Hz . Filter OFF with control fully ccW (in detent position) . JXiVJJAC SENSITIVITY control R14: Prov ides continuously adjustable level control range dB for a| | input sources_ 20) 0s 21 ) PUBL IC ADDRESS LEVEL control R93/94: output bus Controls level PA 22) REV SEND LEVEL control R91/92: Controls level RSI and RS2 output buses. ]' 6-2

control R22/23: Continuously variable from 25 400 Hz . the PEAKING mode the frequency calibration refers the center frequency the bell-shaped PEAKING response curve. In the SHELVING mode, the calibration defines the dB corner point from the max mum available SHELVING BOOST cut 15 dB Jni D E 13) Low FREQUENCY section

R24: Allows adjustment the 0-factor the PEAK ING filter for values 10 . R24 inoperative the SHELVING mode 14) LOW FREQUENCY MODE SELECTOR sectioction switch SW12: When depressed, the LF the equalizer operates the SHELVING mode _ When released, the PEAKING mode selected. 15) EQUALIZER INSERT switch SW13: When depressed, this switch inserts the EQUALIZER section into the signal path and activates no:w the associated LED . When released_ the unequalized input signal is bypassed directly the 8-109A output amplifier 16 ) PAN switch SW14: When depressed, enables PAN control (R79 R82) O ^^ 6O 17) PRE-FADE-LISTEN switch Sw1s: When depressed, the signa origi- Mum na ing ahead tne fader and CHANNEL ON switch fed the PRE output TUj COC ] 18) SOLO switch SW16: When depressed fader and CHANNEL ON switch fed the signal following the the SOLO output 19) HIGH PASS FILTER control R12/13: Allows continuous adjustment cut-off point frequencies from 25 250 Hz . Filter OFF with control fully ccW (in detent position) . JXv SENSITIViTY control R14: Prov ides continuously adjustable level control range dB for a| | input sources 3 PUBL IC ADDRESS LEVEL control R93/94: Controls level PA output bus. 20) 0S 21 ) 22) REV SEND LEVEL controi R91/92: Controls level RSI and RS2 output buses 7J; ) 6-2

control R17/18: Continuously variable from 1.6 25 kHz the PEAKING mode_ the frequency calibration refers the center frequency the E .7 bel l-shaped PEAK ING response curve the SHELVING mode, the 31 | calibration defines the dB corner point from the maximum available SHELVING BOOST cut 15 dB HIGH FREQUENCY O-ADJUSTMENT R16: Allows adjustment hsecPionk the 0-factor the ING filter for values from 10 . R16 inoperative the SHELVING mode _ 93"J 7 HIGH FREQUENCY section MODE SELECTOR switch SWII: When depressed, the HF ection the equalizer operates the SHELVING mode. When released the PEAKING mode ected. 10) MID FREQUENCY section FREQUENCY

control R19/20: Continuously variable from kHz The calibration refers the center frequency the bell-shaped PEAKING response curve. 11) Mid FREQUENCY section_

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4- 126-2-1

WARD-BECK SYSTEMS LTD

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