M497A — Dual Master Module

8-109 AMPLIFIER SERIES

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Noise: -108 dBm EIN from 20 Hz to 20 kHz.

Source Impedance: 600 ohms or less, balanced or unbalanced.

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8-109-1-1

WARD-BECK SYSTEMS LTD. . T

8-109 AMPLIFIER SERIES

Output Level : +30 dBm max imum.

8-109-1-2

W ARD-BECK SYSTEMS L TD .

PARTS LI ST

8-109 AMPLIF IER SERIES

8-109

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8-109- 2-1

WARD-BECK SYSTEMS LTD .

PARTS L IST

8-109 AMPLIF IER SER IES 8-109

PART DESC RIPTION MFG MFG PART NUMBER

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WARD-BEC K SYSTEMS LTD

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WARD-BECK SYSTEMS LTD; OtJ 2matzye Mjae-QAAW

Also: general boilerplate (8 devices) · general boilerplate (5 devices) · general boilerplate (7 devices)

(only shared text)

Also: general boilerplate (7 devices) · general boilerplate (7 devices) · general boilerplate (7 devices) · general boilerplate (7 devices)

M497A DUAL MASTER MODULE

Gain: 8 dB ±0.5 dB nominal, 18 dB ±1 dB maximum. Frequency Response: +0 -1 dB from 20 Hz to 20 kHz (tailored frequency response). Noise : 72 dB below +8 dBm nominal output level (20 Hz to 20 kHz). Harmonic Distortion: Less than 0.25% THO, from 30 Hz to 20 kHz at +24 dBm output or less. Less tnan 0.1% at 1 kHz at +24 dBm output. Source Impedances: Summing: 30,000 ohms,. balanced. External: 600 c ohms maximum, balanced. Input Impedances: Summing: Less than 5 ohms. External: 30,000 ohms. Input Level: External: o dBm nominal, +16 dBm maximum. Output Impedances: Program 600 ohms, balanced. Monitor 600 ohms, ba1anced. Mono 75,000 ohms, bal anced. Load Impedances: Program 600 ohms, ba 1 anced. a

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1-1

WARD-BECK SYSTEMS LTD

M497A DUAL MASTER MODULE

I Output Level: Program : Monitor : Mono:

Channel separati~n: +8 dBm nominal. +24 dBm max mum. +8 dBm nominal. +24 dBm max mum. +8 dBm nominal when summed nto a second M497. 60 dB between Left and Right channels (30 Hz to 15 kHz). Phasing : 1'1 Input and output terminals designated b~ numbers are in phase . ., Power Requirements : ±25 volts dc. 50 rnA nominal. 200 rnA maximum. Ambient Temperature: o to 60 degrees Celsius. Dimensions: 1.6" wide X 7" high X 6.5" deep. (41 mm X 178 mm X 165 mm).

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WARD-BECK SYSTEMS LTD .

CTRCUTTDESCRTPTION ~497A DUAL MASTER MODULE

The M497 accommodates two separate signal channels. It is designed to receive the mixed feeds from the left and right mixer buses of a console. The two signals are independently processed and amplified to standard line levels. The outputs of the M497A supply the main program outputs of the console 1- system. Both channels operate in a similar manner . The following description refers specifically to the LEFT channe l.

1.!!.E..!!.1 The signal originating from the external m1x1ng network enters the module at pins l/A and is applied to the summing current nodes of Zl and Z2. Zl through Z3, with their associated components, provide an actively balanced input as well as a balanced output. The output operates at a nominal level of 0 dBm and appears at pins 6/F. Insert A balanced INSERT point is provided between pins 6/F and 8/0, permitting the insertion of an external equalizer, filter or compressor, either using an M499 insert switcher or by direct wiring. 'Leve l Adjustment From the INSERT point, the signal is returned to the module at pins 8/J and fed to the 8-l09E output amplifier via an attenuator network. R42 serves as a master level adjustment, located at the module front panel and operating with a nominal 10 dB "in-hand" setting.

The 8-l09E output amplifier operates with a gain of 29 dB. It recovers the loss of the input network and provides additional ga~n to produce a nominal line level of +8 dBm at the output a .c

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A 600 ohm resistive dividing network, having a loss of 6 dB, is inserted between the 8-l09E and the two module outputs at BS

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WARD-BECK SYSTEMS LTD

M49ZA DUAL MASTER MODULE Ga in: 8 dB +0.5 dB nomina ] , 18 dB t+1 dB +uO maximum_ murtxsm mab AS+ 6snfmon nad m57207 9 Frequency Response: Isa +0 -1 dB from 20 Hz to 20 kHz oN 0€ nedw Cef (tailored frequency response) reat 0m039z Noise: 72 dB be Iow +8 dBm nomina 7 output 7snj Jdeta bo 6 JT9] ne Teve] (20 Hz to 20 kHz ) _ 602 Caraad?

(s0x 2 [ 0f IH"O2 Harmonic Distortion: Less than 0 .25% THD , from 30 Hz to cne 290 607mt9 uqfnozo kHz at +24 dBm output or less.60 9 9284q af 916 Less than 0 . 1% at 1 kHz at +24 dBm output_ Am 0os Tsatmon Am 0a aJb 2510v 2s= afnemetups9 79w09 Source Impedances: Mumtxsm Summing:9) 2997030 000 ohms; ba lanced 679qm9T fnsfdmA Externa] : 600 ohms maximum, ba Tanced _ qaeh iefd "5 9dTw 2mor2nsmfo Input Impedances : 6T 81I X MM Summing: Externa] : Less than 5 ohms _ 30,000 ohms _ Input Level : Externa] : 0 dBm nomina] , +16 dBm maximum _ Output Impedances : Program: Monitor: Mono: 600 ohms; ba Tanced .

600 ohms, ba lanced . 75,000 ohms, balanced . Load Impedances : Program: Monitor: Mono : 600 ohms, ba Tanced . Bridging , ba Tanced (Skohms minimum) _ Summing , Tess than 5 ohms ba lanced . 5 1-1

M49ZA DUAL MASTER MODULE Output Level : Teafron Cb 8 0+ 86 8 ~t62 {Xsm Program: +8 dBm nomina ] . +24 dBm maximum_ Monitor: 0j :h 0s mc +8 dBm nomina ] +24 dBm maximum. 094] Mono: 297 Yoneups +8 dBm nomina ] when summed into a second M497 _ JUqtvo I6nTmon #Jb 8 + wo[9d 86 Channe ] Separation: [ 04 60 dB between Left and Right channels (30 Hz to 15 kHz) .

0 ch O8 0ot} GhT ~2s. 0 06n to Phas ing : 70 suqjuo Man AS-Input and output termina ]s designated m8b AS+ J6 IHX 1 Je P[ by numbers are in phase _ Jvo Power Requirements: +25 volts dc , 50 mA nomina) , 200 MA maximum _ 29insbegm [ 937002 Ambient Temperature: ! 8d 0 to 60 degrees Celsius.u2 b93ns &d @urtxsm mdoopa Dimensions : 1.6" wide X 7" high X 6 .

5 " deep _ (41 mm X 178 mm X 165 mm) .qmI fuqni emdo 2 05n} 2294 amdo 0o0.02 @aFmmuz 6nt9f*3 [9v9] J#qn] Mumtxsm 08b 31 + Tsafmom Mau Tsnt9f*] 293nsbedm] Juqjuo 693rs { 6d 2mdo Do3 beans[ sd endo 0oa bejnsTed emao 000 Z5 067003 9 70Ji#0M onom 2930sb9qm [ 660] 69306[ sd 2mro 0o2 (mumfotm emdo 42) beznsf6d eafebttd b93as (sd emilo 2 Osn f 229 [ aeatmmuz {ms7po7 9 Jcffnoh onom 1-2

M49ZA DUAL MASTER_MODULE The M497 accommodates two separate igna] channels It is 9_ des gned to receive the mixed feeds from the Teft and right @#M mixer buses 0 f conso ]e The two 1s are independently standard 9ne processed and amplified to Tevels The outputs o f the M497A the ma in Program outputs of the console` seRennetb system_ Both operate in similar manner The foilowing description refers specifica ly to the LEFT channel . 9v0dg 090r7929d 25 90m643 19 ( Input 999 6 bn $ b9nr dmo) 976 2 [900s42 ijod qJuo omom 943 10 7 The signa ] originat from the externa mixing network enters i78 the module at pins and is applied to the umming current nodes 0 f 21 and 22 0do7q Z1 through 23 , with their associated components provide an 9 actively ba lanced input a $ we]1 a $ balanced output The output operates at nomina ] Teve] 0 f dBm and appears at 9'0 Pins 6/F_ enf+2f2n03 n enfiquo39b Kiqqu2 T9w0q 9 | 0A Insert 9+ D05 9 | @dom 9n] napwisd noffel02t z9b fvotq 30 deuo-mf ojFom J0 6ns 0j272ng [qqu 2 Tov ba lanced INSERT point T5 provided between Pins 6/F and 8/J , permitting the insertion 0 f an externa qua]izer filter or compressor either us ing an M499 insert switcher or by direct wiring_ Level Adjustment From the INSERT the i5 returned t0 the module Peants the 8*9892 at pins 8/J and to output amp]ifier via an attenuator network_ R42 serves a5 master Tevel adjustment ocated at the module front pane and operating with nomina 10 dB in-hand setting. Qutput The 8-109E output amplifier operates with ga in of 29 28adEionif recovers the Tos s o f the put network and provides ga in to produce nomina] line Tevel 0 f +8 dBm at the output of the module 600 ohm resistive network, having Toss 0 f 6 dB _ theid-18983 is inserted between the and the two modu le outputs at Pins 12/N and 13/P Each 0 f the two outputs has maximum drive capability o f +24 dBm into 600 ohm Toad 2 -1

WARD-BECK SYSTEMS LTD_ OTJ amataya 4j3a DAAW CIRCUII_DESCRIPTION M497A DUAL MASTER_MODULE separate MONITOR output is Provided , designed to feed the gdT M495' STEREO MONITOR module a 5 we1 as to drive standard 0 'e9b vu meter bn EAE 02n0j 292ud 79x(m 6nsj? bsiti (q05 Dn 6 69229507q RIGHI Channel and_MONO_Output 0079 ot Bm 9mJ rlqqu2 Ateam 941 10 990 e The right channel of the M497 operates in manner similar( to the Ieft channe as described above _ VGQ For the MonO output _ both channels are combined and appear at pins 11/M. The signa ] eve] of this output is such that, when connected to the summing input 0 f second M497A, it wil] produce an output 0 f +8 dBm , with the Teft or right channe] 0 f the first unit operating at +8 dBm. [S0] n 60 2 6 9m 2 5 Juqar 693n6i 6d rTsvt-ie Power_Supply_Decoupling To [9v9 [ T6nfmon J6 29f57990 JqJvo zni9 An active power supply decoupling network consisting 0 f Q1 through Q6 provides isolation between the module and the +25 volt supply ra {Is Transistors Q3 and Q6 monitor the supply current. the event excess ve power supply demands such as from component failure or amplifier overdrive, the mten current fiowing through Q1 and Q4 wit] be Timited. 702297900 ) An tnentzuibA_Leve_' o 94+ 0907059t [6a2} 2 an Jnioq Tr3Zm[ 94j mo | 9 f9ms Juqfuo Je0[ - 8 9nj 09 t bns 6 |8 2nfq 15 Jnamtzucbs (9v9 195260 29v792 Sha 170wjen T0j6unatj6 Tenrmon dffw enff67900 Pne T9n6q Jajit Tubom 9mj JE 09;6jo | en+f1e2 bned-nf a8 0 [ JuqtuQ b eS T0 0 ; 62 affw 29j679q0 79f +f[9M6 JUqjuo Je0[ - 8 94T [snonffbb6 esbfv07q Dng Towjsn Jugnt 90j 220 [ 91] 279v0397 JuqJuo 9d $ J6 08 6 8+ T0 T9vs 9n $ _ Tsntmon 93060*q D nt 6 0 9 {ubom 94 $ A J0 220 [ eafvsd Xiowjen eafbivtb 9v/J21297 mdo 00o J 6 2JUqjuo s Fubom 0 94J bn5 3e0 [ ~8 9dj 099wj9d 69+792 F 2 f mumfKsm 260 290 0 9nj T0 0953 9 | € [ Dns MiSI 2nfq DE0 | Mno 003 otnt m8b AS+ T0 Wsifidsq6) 9v f 7b 2 -2

WAAD-BECK SYSTEMS LTD OTJ Bmataya MjjE-QAAW PARIS_LISI M49Z4 DUAL MASTER MODULE PARI

M49ZA DUAL MASTER MODULE A separate MONITOR output is provided , designed to feed the 94T M495 STEREO MONITOR module a $ we1 as to drive a standard 0 fe9b vu meter.sqsbn} 916 2/ eae}2 Ow] 2dT 9[ 02003 To 292ud naxtm Lafuo 94 2 [9va; 90 ( [ btsbn8f2 0 J bsftffqms bn 6 692293019 RIGHT Channel and MONO_Output 00v9 of 6m 91} ktqqu2 Ateam s4} T0 79m05m Tmt = nt 9J67990 2 [9006d3 d+o8 mejzk?

The right channe1 0 f the M497 operates in a manner similar [ [ 0} to the Teft channe] a$ described above _ Juoal For the MonO output, both channels are combined and appear at pins 11/M. The signa 1 Teve1 0 f this output is such that, _ Ant when connected to the S umming input 0 f a second M497A it wi1] produce an output 0 f +8 dBm , with the Ieft or right channe1 0 f the first unit operating at +8 dBm.

& 7190; dfhw Ej devotdj II 94T Juqjuo beansfed 26 (Taw 86 IUqA( 69306 [ 6d rlevii3s Power Supply_Decoupling 0 T0 Tav9 [ Tsntmon 6 J6 29f5Y#90 JWqfuo T13 2n/9 An active power supply decoupling network consisting of Q1 through Q6 provides isolation between the module and the +25 gI voIt supply ra j]s Transistors Q3 and Q6 monitor the supply current In the event 0 f excessive power supply demands T6d 4 such a $ from component failure or amp] ifier overdrive, the mteq current flowing through Q1 and Q4 wi11 be Timited.

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M497A DUAL MASTER MODULE

A separate MONITOR output is prov ided, designed to feed the M495 STEREO MONITOR module .as well as to drive a standard vu meter. RIGHT Channel and MONO Output The right channel of the M497 operates in a manner similar to the left channel as described above. - For the MONO output, both channels are combined and appear at pins 111M. The signal level of this output is such that, when connected to the summing input of a second M497A, it will produce an output of +8 dBm, with the left or right channel of the first unit operating at +8 dBm. Power Supply Decoupling An active power supply decoupling network consisting of 01 through 06 provides isolation between the module and the ±25 volt supply rails. Transistors 03 and 06 monitor the supply current > In the event of excessive power supply demands, such as from component failure or amplifier overdrive, the current flowing through 01 and 04 will be limited.

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WARO-BECK SYSTEMS LTO

M4 97A - DUAL MASTE R MODUL E

PART DESCRIPTI ON MFG MFG PART NUMBER CRI Diode Mot orola 1N40 03 CR2 CR3 CR4 Ql Tr ansi s t or Texas TIP2 9B Q2 " Nat i ona l PN3569 Q3 " " Q4 Te xas TIP30B Q5 National PN36 45 Q6

R1 Resistor ~ W 5% 15K Philips R2 " 15K " R3 15K R4 15K R5 15K R6 15K R7 15K R8 15K R9 15K RIO 15K R11 15K R12 15K R13 620 R14 620 R1 5 12K R16 12K R17 Tr im pot Piher PT 10V 2K R18 Resistor '4W 5% 11K Phili ps R19 Trim pot Piher PT 10V 2K a .c

R20 Resisto r ~ W 5% 11K Philips ps

R21 620 BS

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WARD-BECK SYSTEMS LTD. CIT

PA RTS LIST M497A DUAL MASTER MODULE

PART OEseR I PTIO N MFG MFG PART NUMBE R R25 Resistor J" W 5% 15K Phil ips R26 II 15K II

R27 620 R2 B 620 R29 15K R30 15K R31 15K R32 15K R33 15K R34 15K R35 R36 1K2 1K2 .. 1K2 R37 R38 1K2 .. R39 delete R40 R41 R42 Pote ntiometer AlB WBS 10-015 R43 delete R44 Potentiometer AlB WBS 10-015 R45 Res istor J" W 5% 300 PhJ,lips R46 II 300 1 R47 300 R4 8 300 R49 620 R50 620 R51 75K R52 75K R53 75K

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R55 300 ps

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R57 . \ 300 R58 4 300 //W

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WAFID-BECK SYSTEMS LTD . . TJ

PARTS L I ST

M497A DUAL MASTER MODULE

PART OE seR I PTI ON MFG MF G PA RT NUM BER R60 Re s i s t or ~ W 5% 620 Phil i ps II R6 1 1K5 R62 1K5 R63 15K R64 15K R65 470 K R66 2K2 R67 2K2 R68 3.3 R69 3.3 R70 3.3 R71 3.3 R72 390 R73 390 R74 75K R75 75K R76 75 R77 75 R78 75 R79 75

Zl To I n t eg r ated C ircui t Nat ional L

8-109 AMPLIFIE R SER IE S

8-109A

PART DESCRIPTI ON MFG MFG PART NUMBER

R8 470 R9 33 K R38 " 620K

8- 109B

8-109C

PARTS DESCR IPT ION MFG MF G PART NUMBER

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8-109-2-3

WARD-BECK SYSTEMS LTD . QT

I 8- 1090 PARTS LI ST

8-109 A MPL I F I ER SERIES

PART DESCR I PTION MFG MFG PART NUMBE R

R8 470 R9 75K R38 1M "

8-109E

PART DESCRIPT ION MFG MFG PART NUMBER

8-109F

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R15 Res istor 1/4W 5% 510 ://W tp ht

8- 109-2-4

WARD-BECK SYSTEMS LTD

8-109 AMPLIFIER SERIES

8-109G

PART DESCIPTION MFG MFG PART NUMBER

R15 Res i s tor 1/ 4W 5% 2K4

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8-109-2-5

WBS • M497A

L o RI GHT CHANNEl l e vel control R44 , Det e rm i nes output l e 'lel o f a ll RIGHT Cha nne l outp u ts . I

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M4 97A ENG. CKD. · ""·, II...., DUAL MASTER MODULE APP. --;;:"C

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M497A DUAL MASTER MODULE PART DESCRIPIION MFG MFG PART NUMBER CRIOO Diode €T CR2 CR3 QRG Transistor 3 8 4 0f-8Ed SsS Sced-88a SSS Q6 919% Motoro]a 1N4003 _ Texas Nationa 1 TIP29B PN3569 8 1 83 0 2) 0[J 2qffTd9 Texas Nationa] [ TIP30B PN3645 [2oF-8ed-Ssss R1of Resistor aW 5 % 15k R2 15k R3 Or-88d SsS 15k R4 15k R5 15k 854e0-38d- 19 R6 15k RZ eo-8ea SSS 15k R8 15k R9 15k R10 0maseo "Gt 15k 10 02[ Philips [p IJ SI] E1) A[J 213 0 O0I J[J TIJ 84 ) 0i9 0sj 79 8 3 0f |{0 82 ISJ SsJ 69) 4sj 059 R1l R12 R13 R14 R15 15k 15k 620 620 12k Ss7t- Sa Js] 5SJ 893 PT 10v 2k esj 0ej PT 10V 2k [Ej Sej {2J 41 R16 12k R17 Trim pot R18 Resistor XW 5 % 11k R19 Trim pot R20 $s Resistor aw 5% 0 11K Piher Philips Piher Philips s$ R21e54_JM- P9J R22 R23 R24 620 620 8K2 8K2 3-2