Toshiba MX-104 Music Mixer User Manual
Contents
1. Operating Instruction Manual TOA POWERED MIXER Model MX 104 TOA ELECTRIC LTD Contents General Description x wings vae Ce d RO POE ODORE R ea 2 A ee ob abf tas 2 Front Panel Names of components amp their usage 3 Rear Panel Names of components amp their usage 4 Connection ARA 5 Input CONNECTIONS lt lt 455 ecce ia SNC SEEN RES 6 Block and Level Diagrams 7 oes er doe o Ea dae BAG ba o Ub ean ep NR VS 8 Characteristics Diagrams 9 A Bela RA RA FREIER 9 Precautions 1 XLR Type Audio Connector The connectors are wired as follows The pin 1 is ground shield the pin 2 cold low minus the pin 3 hot high plus 2 Description of components and functions on the MX 104 Various descriptions are applied depending on each manufacturer In our Operating and Instruction Manual explanation of components and functions is made according to our usage for them General Description The TOA MX 104 is a very compact four channel self powered mixer It was designed to deliver maximum features and performance in a cost effective portable PA package The MX 104 features four input channels one program output and one Foldback output The internal amplifier is rated at 100 watts into an 8 ohm load and 150 watts into 4 oh2. we recommend that balanced outputs be connected to balanced inputs As is described in the beginning of the Operating Instructions Manual the connectors of the MX 104 are wired as follows Pin 1 is ground shield Pin 2 is cold low minus Pin 3 is hot high plus Block and Level iagrams BLOCK DIAGRAMS EQ BA r HIGH Z 35 LEVEL INPUT 1 4 435 oo LOW HIGH REV EBA BA LOW Z 35 60 FB H 35 o BA 20 4 AUX IN AUX 4 20 99 REV PGM REV TO FB REVERBERATION GEQ IN 4 GEQ BA PON lt MIXING BUSSES LEVEL DIAGRAM dB 30 ss PEAK LEVEL REV v p OUT HE 2 10 dic SPEAKERS 150w 4n COMP PROTECT SPEAKERS 150W 40 1 amp FB OUT 4 o4 ssi AUX IN 20 20 INPUT HIGH Z 1 35 40 Y 50 4 INPUT LOW Z 60 60 70 Specifications MIXER SECTION Maximum Voltage Gain Frequency Response INPUT to PGM out 64dB 0 3dB 60Hz 20kHz input LEVEL at 5 position INPUT to FB out 64dB INPUT to GEQ out 64dB Total Harmonic Distortion AUX to PGM out 24dB 0 05 4dB at 1kHz Input EQ Hum and Noise Open 50Hz 15dB Shelving Equivalent Input Noise 130dB 20Hz 20kHz 20kHz 15dB Shelving Equivalent Input Noise 133dB
3. maximum reliability and vir tually eliminates equipment damage due to unsafe or fault conditions Please refer to fault protection table on page 4 for full explanation of this im portant feature Power Amplifier Input Jack PWR IN The PWR Amp input jack allows the internal power amplifier to be used with external equip ment When a plug is inserted thepowerampisautomatically disconnected from the MX 104 mixer section The nominal in put level is 4dB with an input impedance of 10k ohms Rear Panel Power Switch POWER The power switch is a three position type with the middle position being the off position The MX 104 should be operated in the switch position which produces the lowest amount of system hum Speaker Jacks SPEAKERS The speaker outputs are stand ard 1 4 phone jacks wired in parallel Speaker cables recom mend at least 18 gauge wire should be connected between the MX 104 and the speaker systems prior to applying power to the unit Caution The MX 104 should never be operated into less than a 4 ohm speaker load POWERED MIXER X 104 isa REI Oa ov TA CARON RE Ad OR A P OE a CAUTION HOT Earth Terminal GND Cord Wrap The cord wrap is provided for convenient storage of the power cord when the MX 104 is not in use Caution The power cord should always be completely removed from the cord wrap prior to opera
4. 20 55 10 20 500 100 200 5000 10000 200 Hz 10 20 10 2 500 1000 2000 5000 10000 20000 Hz Frequency Frequency POWER AMP POWER BAND WIDTH POWER AMP T H D vs POWER OUTPUT Tid 4 82 0dB 30 34 Pap 0dB 25 3v 160W m HI it aco ria 4n 2 ie if 1 01 5 i 9 BE E ag LOR co ES ii 1 1 1 Lab Y i E 8 5 0 01 lu x E E i EHE i 1 i 1 8 1 LL LLL LE iid 1 Lil 0 001 Li 10 20 100 10k 20k Hz BT 1 16 100 1000 w Frequency Power Output POWER AMP COMPRESSOR REVERBERATION FREQUENCY RESPONSE r M TEE 10 i FAR ei dEi i il mi LILLA 10 20 50 100 200 500 1000 2000 5000 10000 20000 Hz TI 4 Output Voltage J4 y 1 i LL EM ESSE 0 1 1 10 v Input Voltage Appearance 304 11 977 494 19 44 m n MS 2 EA 5 e E 06 666665 IICA ESTA jns
5. is lowered unit shuts down Input signal is lowered Unit shuts down Compressor LED illuminates Amp protection LED illuminates Amp protection LED illuminates Remove excessive loads Minimum speaker loads 4 ohm Check speaker lines systems for shorts Check for adequate ventilation Restoration Automatic restoration after normal loads are obtained Turn off power switch Turn on into operational loads Automatic restoration after temperature lowers to 75 95 C DC drift Input signal is lowered Unit shuts down Amp protection LED illuminates Refer to qualified service personnel Automatic restoration after normal bias is regained Connection Examples MAIN SPEAKER SYSTEM iGO JOO SPEAKER SYSTEM Self powered speakers for foldback TOA model SM 25A AER Es o rm i uf From Speaker jack on Rear Panel REV TOPGM PGM comp PROTECT POWER model MX 104 ao o EQUALIZATION Ne o o o pes AUX FB gra Low Z input should be connected with low impedance 50 ohm 600 ohm microphones 2 KEYBOARD CASSETTE TAPE DECK for play
6. CJ ATOA Communications TOA ELECTRIC CO LTD KOBE JAPAN Printed in Japan 133 02 690 80
7. IHF A level Controls Minimum 110dB IHF A PGM Master at MAX and all Equalization input level controls minimum 90dB IHF A 63Hz 124 Peaking 2kHz 12dB Peaking PGM Master at MAX and one 250kHz 124 Peaking 8kHz 12dB Peaking input level control at MAX 704 IHF A 1kHz 12dB Peaking ACTUAL LOAD IMPEDANCE CONNECTION INPUT SPECIFICATIONS FOR USE WITH NOMINAL SENSITIVITY PGM OUTPUT LEVEL 4dB CONNECTOR 500 TO 2500 MICRO PHONES 60dB 0 78mV XLR TYPE NC3F 27kQ OR LOWER IMP LINES 35dB 13 8m V PHONE JACK 30kQ OR LOWER IMP LINES 204 77 5mV RCA PIN JACK PHONE JACK L 50kQ OR LOWER IMP LINES 4 1 23V PHONE JACK Jd 10kQ OR LOWER IMP LINES PWR AMP PHONE JACK 4dB 1 23V OUTPUT SPECIFICATIONS OUTPUT LEVEL ACTUAL MAX BEFORE NOMINAL CLIP SOURCE IMPEDANCE 6000 FOR USE WITH CONNECTION NOMINAL CONNECTOR 6000 OR HIGHER IMP LINES 6000 OR HIGHER IMP LINES 6000 OR HIGHER IMP LINES 448 1 23V 204 7 75V PHONE JACK 6000 PHONE JACK 4dB 1 23V 20dB 7 75V 6000 4dB 1 23V 20dB 7 75V PHONE JACK POWER AMPLIFIER SECTION Frequency Response 0 1dB 15Hz to 30kHz 150W RMS 40 Rated Power amp Load 150W RMS 40 HOW RMS 80 Power Output at Clipping 1 THD 1kHz 160W RMS 49 115W RMS 80 Total Harmonic Distortio
8. Jacks AUX IN The phone jack and RCA pin jacks are wired in parallel with an input level of 20dB When a plug is inserted into the phone jack the RCA pin jacks are automatically switched out of the AUX circuitry Foldback Output Jack FB OUT This jack is for connection to external power amplifiers and or equalizers for the on stage monitoring system Nominal output level is 4dB with an impedance of 600 ohms If the internal power amp and equal izer are to be used for the on stage monitor system the FB output should be connected to the GEQ input jack Program Output Jack PGM OUT The PGM Out jack is provided for connection to external equal izers and or power amps deriv ing its signal prior to the internal GEQ and power amp Nominal output level is 4dB with an impedance of 600 ohms Graphic Equalizer Input Jack GEQ IN The GEQ input jack allows the graphic equalizer to be used in dependently ofthe MX 104 with otherexternal equipment orthe internal power amplifier and the graphic equalizer withexternal equipment When a plug is inserted the main mix from theprogram bussisdisconnected from the graphic equalizer and the power amplifier The nomi nal input level is 4dB with an input impedance of 50k ohms Graphic Equalizer Output Jack GEQ OUT This jack allows the MX 104 and the internal graphic equal izer to be used with an external power amplifier or in conjunc tion with the GEQ
9. back 000000008 MUSICAL INSTRUMENT Input Connections Generally speaking there are two rules to follow when connecting equipment outputs to the inputs of other equipment 1 Properly match the impedances of the outputs and inputs 2 Connect low impedance outputs to high impedance inputs It goes without saying that not only input and output impedance matching but also level matching should be taken into consideration Each input channel ofthe MX 104 is provided with an Input Level Control that includes a negative feedback NF circuitry so the usable signal level range is wide Input impedances and levels are shown in the following table INPUT SPECIFICATIONS ACTUAL FOR USE SENSITIVITY CONNECTION INPUT LOAD WITH PGM OUTPUT CONNECTOR IMPEDANCE NOMINAL LEVEL 4dB 500 TO 2500 CHI LOW 7 OPEN MICRO 604 0 78mV XLR TYPE NC3F PHONES 27kQ OR CH4 HIGH Z 27kQ LOWER IMP 35dB 13 8mV PHONE JACK LINES 30kQ OR AUX 30kQ LOWER IMP 20dB 77 5mV MORE DI LINES 50kQ OR GEQ 50kQ LOWER IMP 4dB 1 23V PHONE JACK LINES 10kQ OR PWR AMP 10kQ LOWER IMP 4dB 1 23V PHONE JACK LINES Sensitivity is the level required to produce a program out level of 4dB 0dB is referenced to 0 775V RMS All XLR Type connectors are electronic balanced Phone jack is unbalanced If the line going from one piece of equipment to another is long more than 5m
10. es 13dB at 100Hz and 15dB at 50Hz of continuously variable active shelving equalization The 0 detented position pro vides flat audio response Reverb to Foldback Control REV TO FB This control adjusts the amount of reverb signal that is returned to the foldback buss and thus the level of reverb contained in the on stage monitor mix Reverb Control REV This control determines the level of signal assigned to the re verb mixing buss Rotating the control clockwise increases the amount of reverb in that channel Foldback Control FB The Foldback control deter mines the level of signal assign ed to the foldback mixing buss thus setting the level of that channel in the on stage monitor Graphic Equalizer 4 EQUALIZATION The graphic equalizer is 5 inde pendent active bands filters providing 12dB of boost or cut at each center frequency The 0 detented position provides flat audio response Foldback Master Control FB The FB master control adjusts the overall combined signal level of the four independent channel foldback sends and thus the level of the entire on stage moni tor mix Aux Level Control AUX This control sets the overall level of the Aux input signal Input Level Control LEVEL The level control provides con tinuously variable adjustment of the channel output to the program mixing buss thus determining the level of that channel in the main sound sys
11. in jack to be usedindependently ofallother MX 104 circuitry Nominal output level is 4dB with an impedance of 600 ohms Power Amp Compression Indicator COMP The Comp LED lights when the internal compressor is activated The compressor is provided to protect speaker systems by com pressing the input signal level of the power amplifier when clip ping occurs in the output stage Frequent flashing of the LED is not reason for alarm However a constant or steady light indicates that the MX 104 is being over driven and that the internal power amplifier is possibly under powered for that applica tion The output level ofthe MX 104 should be decreased until the LED only flashes intermittently Power Indicator LED POWER The indicator LED lights when the power switch is on Power Amp Protection Indicator PROTECT The indicator LED lights if the power amplifier output is short ed ifthe temperature ofthe unit rises above acceptable levels or if DC is drifted to the speaker outputs If the LED should light speaker wiring and ambient temperature of the MX 104 should be checked If the LED remains lighted the unit should be referred to qualified service personnel for repair Note The MX 104 protectioncircuitry will 1 detect faulty conditions within the power amplifier 2 give a visual indication and 3 automatically shut down until the fault condition is alleviated This special circuitry ensures
12. ms Fach input channel has an electronically balanced XLR connector and a high impedance unbalanced 1 4 phone jack In addition each channel features two band EQ a pre EQ Foldback send and post EQ reverb send The master control section features a patchable 5 band graphic equalizer a quality 3 spring reverb a full patch bay with 1 4 phone auxiliary and RCA tape inputs and master volume controls for Program Foldback and Reverb return to both The power amp protection circuitry and autocomp compressor both with LED s are also located in this section 1 Four input channels 2 100 watts into 8 ohms 150 watts into 4 ohms 3 Patchable 5 band graphic EQ 4 Auto Comp compression unit w LED 5 Built in spring reverb 6 Power amp protection circuitry w LED 7 Full patch bay 8 Aux input w level control RCA jacks and parallel phone 1 4 jacks 9 Reverb level to PGM and FB 10 Independent Foldback mix Each Channel 1 Input level control 2 Two band EQ 3 Pre EQ Foldback send 4 Post EQ Reverb send 5 Low Z electronically balanced XLR input 6 Hi Z unbalanced 1 4 input Front Panel High Equalizer Control HIGH The high EQ control alters the high frequency response of the input channel providing 13dB at 10kHz and 15dB at 20kHz of continuously variable active shelving equalization The 0 detented position provides flat audio response Low Equalizer Control LOW The low EQ control provid
13. n Input Sensitivity 4dB 1 23V Input Impedance 10kQ Output Connector Phone Jack x2 Power Requirement 294 W 120V AC 60Hz Less than 0 1 200mW 150W RMS 20Hz 20kHz 40 Dimensions Typically below 0 05 494 W X 184 H X 304 D 19 44 X 7 24 X 11 97 ins Compresser Dynamic Range Weight Greater than 26dB 10 kg 22 lbs Hum and Noise At least 105dB S N ratio 20H 20kHz At least 109dB S N ratio IHF A weighted Damping Factor Greater than 200 1kHz 8Q 0dB is referenced to 0 775V RMS Specifications are subject to change without notice Characteristics Diagrams LOW Z HIGH Z IN amp INPUT EQ LEVEL Control HIGH Z IN amp INPUT EQ set at 5 GEQ 15 ABE T 15 1 10 tT t 1 10 5 di IRA MARI 4 5 hd 0 0 5 Mi 5 10 FH 10 15 Lu 15 4 4 11 10
14. tem mix Since the reverb signal is post this control an increase in the level of the channel s output will also result in a corresponding increase in the reverb effect of that channel The nominal level of the input level control is at the 10 posi tion High Impedance Connectors HIGH Z These connectors are unbal anced standard 1 4 phone jacks with an input impedance of 27k ohms and an input level of 35dB When a plug is inserted into the high Z input the cor responding XLR connector is automatically switched out ofthe input circuitry Low Impedance Connectors LOW Z The XLR connectors are low im pedance electronically balanced inputs with an input impedance of 1k ohms WERED MIXER 6 TOA model MX 104 REV TO FB EQUALZATION fev come PROTEC nm POWER pocoonaeg AUX aa Qiu oj o Pw O O O O Q Reverb to Program Control REV TO PGM This control adjusts the amount of reverb signal that is returned to the program buss and thus the level of reverb contained in the main sound system Program Master Control PGM The PGM control adjusts the overall combined signal level of the four independent channel level controls and thus the level of the main sound system Aux Input
15. tion of the unit This will insure maximum cooling of the MX 104 For the same reason adequate clearance should be maintained between the rear panel and any other surface 4 6 inches should do The vents on the bottom and top of the MX 104 are also provided for convec tion cooling These vents should be kept clear and open Failure to do so may cause thermal shut down of the unit AC Power Cord The power cord is the three wire type with proper grounding faci lities Caution The ground pin should not be removed under any cir cumstances If the MX 104 must be used without proper ground ing facilities a suitable ground ing adapter should be utilized Operation of the MX 104 with proper grounding techniques will result in less system noise and greatly reduced shock hazard Warning To avoid possible equipment damage and or per sonnel injury the fuse should always be replaced with same type and rating Using improper fuses will also void the warran ty The MX 104 should always be disconnected from AC outlet prior to changing fuses If fuse repeatedly fails the unit should be referred to qualified service personnel for repair Fault Protection Table Protection Indication Action Excessive current due to overloads Short circuits less than 0 4 ohm Temperature rise of heat sink more than 105 C Current limiter activates at less than 2 ohm Current limiter activates input signal
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