M610 — 10 Watt Monitor Amplifier

The M61O 10 watt audio power amplifier is an ac operated, plug-in module de- signed for professional applications in the broadcast, motion picture and sound recording industries The unit represents the continuing development and expansion of the well proven WBS 600 series of 3Y2 inch modular components and offers a wider scope of selection for monitor amplifiers from this design category The circuit utilizes differential operational amplifiers to produce an ultra- reliable transformerless design capable of developing minimum of 10 watts rms to drive an 8 ohm loudspeaker directly_ Other load impedances (4, 16 ohms, etc.) may be accommodated with appropriate power output inter- polation.

A unique protection circuit incorporated within the M610 activates instan- taneously during adverse amplifier load conditions or at predetermined power output level. The amplifier does not sustain damage even when deliberately shorted at full power output: A combination of conditional frame strapping and variable front panel level control permits the M61O to operate over an input signal range of 20dBm to +18dBm: The M61O presents permanent 2Ok ohm impedance at the input and is capable of operating from a balanced or unbalanced source.

The unit exhibits exceeding Iy uniform frequency response with Iow noise and distortion over the frequency range 30Hz to 20kHz: The modest size of 3.4W x 3.4H x 13.7D inches allows five M610 monitor am- plifiers to be accommodated in one standard rack mounting ( 19W 3.5H) MF6 equipment frame. FEATURES: 1Ow rms direct output into 8 ohms Compact design mounts in standard WBS 3-% inch MF6 rack frame Self contained power supply Operational amplifier transformer- less 1C design with unique short- circuit protection 20k bridging input balanced/ unbalanced Active elements contained on plug-in subsidiary PC card WBS M6io

The M610 I0 walt audio power amplifier operated, plug-in module De ned nintessione applications the hroadcast, momom picture and sound recorgio industries FEATURES: 1Ow direcl oulpul into ohms The unit represents the continuing development and expansion the well proven WBS G00 series of 3v1 inch modulai components and offers widler EcOl sulcctan for monitor ampiuny Irom InIS Qesign Teqary. Compact design mounts standard WBS 3- " inch MFG rack frame circuit Fuiilizes Jutterenla operationa amplifiers t0 produce an ultra reliable tanstorinericss design canable dtvclopinu mninimum ot 10 watts FFAME phm loudspeaker directly: Other lvad impedances (4, 16 ohms, e[C, may accommodetd Wr anmtonriate nower outuuliCr palalion Self contained power supplY unique protection circuit incorporated within the M6IC activates instan Faneous durino advu SL amplifier load conditions predetermined puYU output level.

The amplifier does nOt sustain damage ever when deliberately shorted at full power Qitnut Operational amplifier transformer- 1C design with unique short circuit protection comhination of conditional frame stranping and variable foni pane tevel ComIC permits the M610 operalc avet an innut signal range 0f 20.Bui IEBin: The MG1O presents permanent ?0k ohm impedarce the input and capable operating trom balanccu unbalanced source Tne unil exhibits exceeding- uniform frequency resnonse with low noise and dlstortion Dver the frequency range J0H2 20-Hz 20k bridging input balanced/ unbalanced Active elements contained on plug subsidiarv PC card The mndesl siz 0f 4W * 34H * 1370 inches allows five M6IO monito Jafhers Jrcommodated one standard rack mounting (19W * 3.5H) MFG equlpment franta 46lD

INPUT IMPEDANCE 20k ohms LOAD IMPEDANCE 8 ohms nominal, 4 or 16 ohms with appropriate power output correction. OUTPUT IMPEDANCE Less than 0.5 ohms PHASING The low terminal number of the input pair is in phase with the direct output terminal POWER REQUIREMENTS 115V ac, 60Hz, 30VA AMBIENT TEMPERATURE 00 to 600C DIMENSIONS 3.4W x 3.4H x 13.7D inches WEIGHT 4 Ibs net GAIN 40 or 60dB matched gain (conditional frame strap) Front panel variable control_ FREQUENCY RESPONSE + 0.25dB from 30Hz to 20kHz NOISE 8OdB below 1OW TOTAL HARMONIC DISTORTION Less than 0.35% from 30Hz to 20kHz (measured at 1OW output level) INPUT LEVEL 20dBm nominal, OdBm maximum (60dB gain) OdBm nominal, +18dBm maximum (40dB gain) LONGITUDINAL BALANCE Greater than 50dB SOURCE IMPEDANCE 600 ohms or less balanced or unbalanced ACCESSORIES: MF6-600 Series Mounting Frame 19W x 3.5H x 14.5D (less rear cable tray and cover) Standard E1A rack mounting: Accom- modates five M610modules or any combination of single, double or quadruple units not exceeding ten single width modules_ MFR6-600 Series Frame Receptacle_ Two required per M61O.

WARD-BECK SYSTEMS LTD_ WARD-BECK SYSTEMS INC- 841 Progress Ave,Scarborough, Ont M1H 2x4 290 Larkin St;, Buffalo; New York 14210 Telephone: (416) 438-655O Telex: 06-23469 WBS

INPUT IMPEDANCE 20k ohms LOAD IMPEDANCE 8 ohms nominal, 4 or 16 ohms with appropriate power output correction_ OUTPUT IMPEDANCE Less than 0.5 ohms PHASING The low terminal number of the input pair is in phase with the direct output terminal. POWER REQUIREMENTS 115V ac, 60Hz, 30VA AMBIENT TEMPERATURE 00 to 600C DIMENSIONS 3.4W x 3.4H 13.70 inches WEIGHT 4 Ibs net GAIN 40 or 60dB matched gain (conditional frame strap) Front panel variable control_ FREQUENCY RESPONSE + 0.25dB from 30Hz to 20kHz NOISE 8OdB below 1OW TOTAL HARMONIC DISTORTION Less than 0.35% from 30Hz to 20kHz (measured at 1OW output level) INPUT LEVEL 20dBm nominal, OdBm maximum (60dB gain) OdBm nominal, +18dBm maximum (4OdB gain) LONGITUDINAL BALANCE Greater than 50dB SOURCE IMPEDANCE 600 ohms or less balanced or unbalanced ACCESSORIES: MF6-600 Series Mounting Frame 19W x 3.5H x 14.5D (less rear cable tray and cover) Standard E1A rack mounting: Accom- modates five M610modules or any combination of single, double or quadruple units not exceeding ten single width modules_ MFR6-600 Series Frame Receptacle_ Two required per M61O.

WARD-BECK SYSTEMS LTD_ WARD-BECK SYSTEMS INC- 841 Progress Ave.Scarborough,Ont. M1H 2x4 290 Larkin St;, Buffalo; New York 14210 Telephone: (416) 438-655O Telex: 06-23469 WBS

GAIN 40 0i 60IB mutched gain (conditional frame strapl Front uinul Vmtnblo ccntrol INPUT IMPEDANCE 20k ohms LOAD IMPEDANCE ahmsnominal 16 ohms with appropriate power output correction. OUTPUT IMPEDANCE than 0 5 otms PHASING The low terminal number of tc input palt ts In phase writh Ihe direct output turminal; POWER REQUIREMENTS T15V GOHz, JOVA AMBIENT TEMPERATURE G02C DIMENSIONS 4Wx 34H 1370 inches WeiGhT Ibs, not.

FREQUENCY RESPONSE 0.25d8 trom 30H2 20kHz NOISE 80dB below IOw TOTAL HARMONIC DistoRTION Less thun 0.3593 Irom 30H2 20kHz Rme nsured 10W outfut levell INPUT LEVEL ~0UBm nominal , OBm maximum (GOUB qain) 0OdBm nominal; 18 Bm meximum (4OdB gainl LONGITUDINAL BALANCE Grent than 50u8 SourCE |MPEDANCE 600 ohms balanced unbalanced ACCESSORIES: MFG-600 Series Mounting Frame 19w 35H 14.50 (less reur cable Iray and cover| Stundard EIA ruck mounting; Accoina modales live Kgi 0 module; ay combination of single , dounl qquadruple units not exceeding ten single wridth modulos MFr6 600 Sertes Frame Receptacil required per MGIO.

WARD-BECK SYSTEms LTD; WARD BECK SYSTEMs INC Ualerorera Au RentaonNhRX 23d Lonkn Bt Bulno Nc L] Fetoone 430-CSEO F: D820f9 WBS WbspsCAI