M124

The M124 is a high performance audio amplifier designed to offer optimum flexibility with minimum space occupancy for custom console applications in the broadcast and sound recording industries_ The unit exhibits low input noise (-124 dbm) high output capability (1 watt) , uniform frequency res- ponse and exceptionally low total harmonic distortion. In addition, the M124 printed circuit module measures only 3V2 x 57 x 1-3/8 (component width) and includes a specially designed input transformer for multiple source impedance operation.

FEATURES: Multiple source impedance selection via low-noise input transformer. Conditional gain strapping on frame receptacle: Extremely low equivalent input noise_ unique active, balanced output circuit permits totally balanced systems design without the use of bulky output transformers and the attendent distortion introduced by such components at high output levels. The low impedance presented at the amplifier output terminals permits the use of multiple resistive splitting networks with maximum isolation between output lines_ High output capability (1 watt) Conditional strapping is accomplished on the card connector: Thus, M124 modules may be readily interchanged within a system without regard to function: An entire console system (monitor amplifiers excepted) may be designed around the M124 plug-in card: Very low output impedance Actively balanced output circuitry

The M124 is a high performance audio amplifier designed to offer optimum flexibility with minimum space occupancy for custom console applications in the broadcast and sound recording industries. The unit exhibits low input noise (-124 dbm) high output capability (1 watt), uniform frequency res- ponse and exceptionally low total harmonic distortion. In addition, the M124 printed circuit module measures only 3V x 5l2 x 1-3/8 (component width) and includes a specially designed input transformer for multiple source impedance operation: FEATURES: Multiple source impedance selection via low-noise input transformer Conditional gain strapping on frame receptacle Extremely low equivalent input noise.

A unique active, balanced output circuit permits totally balanced systems design without the use of bulky output transformers and the attendent distortion introduced by such components at high output levels. The low impedance presented at the amplifier output terminals permits the use of multiple resistive splitting networks with maximum isolation between output lines: High output capability (1 watt) Conditional strapping is accomplished on the card connector.

Thus, M124 modules may be readily interchanged within system without regard to function: An entire console system (monitor amplifiers excepted) may be designed around the M124 plug-in card: Very low output impedance Actively balanced output circuitry

The M124 hugh nerfarmance audia ampliliet designed offer optimum flexibility with Sulcl occupancy f0 custom console applications the' broadcas Jlid sourd recording industries exhihits Iow arput noise 124 dbrl hurgh outpUt Capability watt nmorm frenliency res ponse and excentionally Toa harmonic Mastortinn In addition; tnc M124 printed circuit module measurus rly 3V1 13/8 (component wlth/ and includes 'specially desiyned inpul Hanctorici for multiple SOUICC unpedance operation FEATURES: Multiple source impedance selection via law-noise inpul transtormer; Conditional gain strapping on ramte Tecentacie Extremely low equivalent input MOISC unique active balanced output circuil perrits tolallv balanced systems desigu wilhoul bulky outpul transformers and attenren distortion intraduced hy such camnonents high output Jevel; T"e Iov imnerance Sentem amolute output terminals pCrInits Ihe Use 0f multiple resistive splitting retworks Wih maximum isolation between Duiouans High oulpul capability watt) Conritional strapping accomplisheu @I tC Curd cunnccioi Thus; M124 matules may De readily Interchanged within system without regard ta function: An entire console systern (monitor amplifiers excepted) may be designed around the M124 plug-in card, Very low output impedance Actively balanced output circuitry

TRANSDUCER GAIN 48.4 46 Kik 6201 45-6Odb _ 0.Sdb (conditional strapping on edge connector) FREQUENCY RESPONSE +0 25db From 2Ohz to 20khz ~0.4d8 @ 10 i? & 4skte EQUIVALENT INPUT NOISE ~124dbm ( 1Ohz to 1OOKhz bandwidlh) -127dbm (?Ohz to 20Khz bandwidlh) HARMONIC DISTORTION 1Mb @ 0481 0.03.2 Less than 25% from 30hz to 20Khz Less than 0.5 from 20hz to 20Khz (Mieasured at wall outpul level) M 24 AUDIO AMPLIFIER The M124 is a high performance audio amplifier designed to offer optimum flexibi ility with minimum space occupancy for custom console applications in the broadcast and sound recording industries The unit exhibits low input noise (-124 dbm) high output capabi ility (1 watt) , uniform frequency response and exceptionally low total harmonic distortion In addition, the M124 printed circuit module 32 X 5k X measures only 3/8 (component width) and includes specially designed input transformer for multiple source impedance operation_ SOURCE IMPEDANCE 37.5/150/600 ohms balanced unbalanced INPUT IMPEDANCE Greater than 10 source impedance INPUT LEVEL -16 dbm maximum unique active , balanced output circuit permits totally balanced systems design without the use of bulky output transformers and the attendent distortion introduced by such components at high output levels _ The low impedance presented at the amplifier output terminals permits the use of multiple resisti ve splitting networks with maximum isolation between output lines LOAD IMPEDANCE 150 ohms Or higher (nominal 600 ohms) OUTPUT IMPEDANCE Less than /10 load impedance OUTPUT LEVEL J3Odbm , wvall maximum 28.6 081^ C ?

TFA 20. Sz1 6 Vp LEvEz The- SNterminal number of the input pair and the low terminal number of the outpul pair are in phase: Conditional strapping is accomplished on the card connector Thus, M124 modules may be readily interchanged within a system without regard to function. An entire console system (monitor amplifiers excepted) may be designed around the M124 plug-in card_ POWER REQUIREMENTS 48 volts dc regulated, 100 mA wvall outpul level AMBIENT TEMPERATURE 00 to 608c DIMENSIONS PC Card 3XSX 3/8W in.

WEIGHT 2 lbs net A T

TRANSDUCER GAIN 45-60db $ 0.5db (conditional strapping on edge connector) FREQUENCY RESPONSE 40. 25db from 2Ohz to 20Khz EQUIVALENT INPUT NOISE ~124dbm (1Ohz to 1OOKhz bandwidth) ~127dbm (2Ohz to 20Khz bandwidth) 124 AUDIO AMPLIFIER HARMONIC DISTORTION Less than 0.25% from 3Ohz to 20Khz_ Less than 0.5% from 2Ohz to 20Khz (Measured at watt output level) The M124 is high performance audio amplifier designed to offer optimum flexibility with minimum space occupancy for custom console applications in the broadcast and sound recording industries_ The unit exhibits low input noise (-124 dbm) high output capability (1 watt) , uniform frequency response and exceptionally low total harmonic distortion In addition, the M124 printed circuit module measures only 37 X 5% X 1 3/8 (component width) and includes a specially designed input transformer for multiple source impedance operation.

SOURCE IMPEDANCE 37.5/150/600 ohms balanced or unbalanced INPUT IMPEDANCE Greater than X 10 source impedance INPUT LEVEL -16 dbm maximum A unique acti ve , balanced output circuit permits totally balanced systems design without the use of bulky output transformers and the attendent distortion introduced by such components at high output levels The low impedance presented at the amplifier output terminals permits the use of multiple resistive splitting networks with maximum isolation between output lines_ LOAD IMPEDANCE 150 ohms or higher (nominal 600 ohms) OUTPUT IMPEDANCE Less than /10 load impedance OUTPUT LEVEL +3Odbm , watt maximum Conditional strapping is accomplished on the card connector Thus , M124 modules may be readily interchanged within a system wit thout regard to function An entire console system (monitor amplifiers excepted) may be designed around the M124 plug-in card PHASING The low terminal number of the input pair and the low terminal number of the output pait r are in phase: POWER REQUIREMENTS 48 volts dc regulated , 100 mA at watt output level AMBIENT TEMFERATURE 00 to 60 DIMENSIONS PC Card 3k X 5k X 1 3/8W in.

WEIGHT 2 Ibs net C A T

TRANSDUCER GAIN 45-6Odb + 0.Sdb (conditional strapping on edge connector) FREQUENCY RESPONSE +0. 25db from 20hz to 20Khz EQUIVALENT INPUT NOISE ~124dbm (1Ohz to 1OOKhz bandwidth) -127dbm (2Ohz to 20Khz bandwidth) M 124 AUDIO AMPLIFIER HARMONIC DISTORTION Less than 0.25% from 3Ohz to 20Khz Less than 0.5% from 2Ohz to 20Khz (Measured at watt output level) The M124 is a high performance audio amplifier designed to offer optimum flexibility with minimum space occupancy for custom console applications in the broadcast and sound recording industries: The unit exhibits low input noise (-124 dbm) high output capabi" lity (1 watt) , uniform frequency response and exceptionally low total harmonic distortion In addition, the M124 printed circuit module measures Only 37 X 5h X 1 3/8 (component width) and includes a specially designed input transformer for multiple source impedance operation_ SOURCE IMPEDANCE 37.5/150/600 ohms balanced or unbalanced INPUT IMPEDANCE Greater than X 10 source impedance INPUT LEVEL -16 dbm maximum A unique active, balanced output circuit permits totally balanced systems design without the use of bulky output transformers and the attendent distortion introduced by such components at high output levels The low impedance presented at the amplifier output terminals permits the use of multiple resistive splitting networks with maximum isolation between output lines_ LOAD IMPEDANCE 150 ohms or higher (nominal 600 ohms) OUTPUT IMPEDANCE Less than 1/10 load impedance OUTPUT LEVEL +3Odbm , watt maximum Conditional strapping is accomplished on the card connector Thus, M124 modules may be readily interchanged within system without regard to function An entire console system (monitor amplifiers excepted) may be designed around the M124 plug-in card PHASING The low terminal number of the input pair and the low terminal number of the output pair are in phase POWER REQUIREMENTS 48 volts dc regulated_ 100 mA at watt output level AMBIENT TEMPERATURE 0O to 60Oc DIMENSIONS PC Card 37 X 5x X 1 3/8W in.

WEIGHT Ibs net C AT