Fender MA6 User's Manual
Contents
1. 4 5 Pre Amp Jacks and Level Controls 4 6 Master Section Level Controls 4 7 Equalizer Controls VU Meter 5 8 Equalizer Response Curves 6 9 Master Section Effects Direct Inputs Reverb Jacks 6 10 REI FANGI akang 7 11 Typical Stage SSO 8 12 Speaker Connections N 8 13 Effects Jack Connections are 10 15 Typical Speaker Monitor Tape Recording Connections 11 16 System with Auxiliary and Monitor Speakers 11 17 12 18 Recording een eee eee Ue Sees 12 19 Speaker Columns nc eater Acadia de waste way ase 13 NOTE The items specified in the text are the individual units shown in the Figure INTRODUCTION The Fender MA6 is composed of a mixer with six input channels and two output channels a reverb unit a 200 watt power amplifier and two speaker system enclosures The mixer reverb and power amplifier are contained in one compact package hereafter referred to as the Mixer Each speaker enclosure contains two 12 special design cone speakers and a high frequency compression driver with associated horn and crossover network mounted in a Th2. 6 MIXER AMPLIFIER MADE IN U S A PUBLIC ADDRESS SYSTEM OPERATION INSTRUCTION MANUAL MANUAL 014558 REV WARNING TO REDUCE THE RISK OF FIRE SHOCK HAZARD DO EXPOSE THIS APPLIANCE RAIN OR MOISTURE PIN 016637 MIXER AMPLIFIER OPERATION INSTRUCTION MANUAL B R MADE IN U S A i PHYSICAL DIMENSIONS APPROXIMATE FOR SHIPPING PURPOSES MIXER AMPLIFIER SPEAKER COLUMN U S System Metric System U S System Metric System Weight 50 Pounds 22 67 kg 62 Pounds 28 0 kg Width 25 Inches 63 0 cm 19 Inches 48 0 cm Depth 23 Inches 58 0 cm 13 5 Inches 34 0 Height 7 5 Inches 19 0 cm 36 5 inches 93 0 cm P O BOX 4137 1300 EAST VALENCIA DRIVE FULLERTON CALIFORNIA 92634 NOTE See accompanying limited warranty folder Copyright 1979 CBS Musical Instruments a Division of CBS Inc TABLE Introduction SECTION 1 Functional Block Diagrams Input Channel Control Functions Gan CONTO es Ghd Treble Control Base Effects Reverb Control Monitor GONDHOL Channel Level Control Master Section Control Functions Main Channel Master Level Control Monitor Channel Master Level Control Reverb Return Control Main Channel Reverb On Off Switch Monitor Ch
3. together make a 4 ohm load Pre Recorded Tapes To play back pre recorded tapes connect the tape recorder to one of the Direct Inputs jacks Main or Monitor Fig 9 Item 1 and 2 or to the Effects Receive jack Fig 9 4 if it is not already in use The Effects circuit has its own level control Tape Recording Fig 18 To record the main channel signal connect the tape recorder to the Pre Amp Output jack Fig 10 4 AUXILIARY lt gt gt x 1 A R Y FIGURE 16 MA6 System with Auxiliary and Monitor Speakers HIGH POWER SPEAKER AMP POWER MONITOR OUT MONITOR SPEAKER __ our oer MONITOR _ SPEAKER FIGURE 17 Bi Amp Connections TAPE RECORDER rower AMP MONITOR SPEAKER OUT MONITOR SPEAKER MONITOR SPEAKER FIGURE 18 Tape Recording SECTION 6 CHANNEL PA SPEAKER SYSTEM 12 HF Speaker Enclosure System Fig 19 The Fender MA6 Public Address System is supplied with two speaker enclosures Each enclosure contains two high efficiency 12 low frequency speakers mounted in a Thiele aligned vented box enclosure and a compression driver mid and high frequency horn An internal crossover network provides the correct frequency input to the horn and the bass speakers
4. 5 Slide Controls Fig 7 Item 1 Controls frequency response boost and cut for the Main output channel The response of the five controls is indicated in Figure 8 Monitor Equalizer 5 Slide Controls Fig 7 2 Controls frequency response boost and cut for the Monitor output channel The response of the five controls is indicated in Figure 8 VU Meter Fig 7 3 Indicates the relative output of the internal power amplifier For a clean output signal the meter should not exceed 0 VU other than on extreme transients PRE AMP INPUT CONNECTORS Each channel is provided with a three pin low impedance Lo Z microphone connector Fig 9 1 designed to be used with a low impedance microphone in the range of 50 to 250 ohms The input is unbalanced and pin 3 is the signal input pin A high impedance Hi Z phone jack is also provided for each channel Fig 5 Item 2 This jack allows use of a high impedance 50 to 150K ohms microphone and will also accept most line level signals by reducing the channel Gain control NOTE Only one input should be used at any one time on each channel While both inputs are active simultaneously the gain balance for a low and high impedance input will most likely be unsatisfactory AUXILIARY CONNECTORS Front Panel DIRECT INPUTS Main Fig 9 Item 1 This jack allows connection of a signal directly into the Main summing amplifier It is useful fo
5. If it is used as the master unit connect the Main channel output of the other mixer to the Direct Inputs Main jack Fig 9 1 and the Monitor channel to the Direct Inputs Monitor jack Fig 9 2 This allows control of the entire System with the Master section controls of the If the is to be used expander with another Master unit the Pre Amp Out jack Fig 10 Item 4 and the Monitor Out jack Fig 10 5 should be connected to the Master unit Use the Master section controls of the MA6 as Submasters MONITOR out tCONTROL EXPANDER DIRECT MAIN FIGURE 13 Chaining Mixers Effects Send and Receive Jacks Fig 9 Item 3 and 4 The mix at the Effects Send jack can be used for several functions If two different monitor mixes are required this jack can be used for the second monitor mix and can also be used for tape recording Phasers Flangers Delay lines or other signal processors may be used in the effects loop The Effects Send jack should be connected to the input of the signal processing device and the output of the device to the Effects Receive jack Fig 14 Monitor Out Jack Fig 10 5 This jack is usually connected to an external power amp forthe Monitor speakers It can also be used for tape recording Fig 15 Auxiliary Reverb Send and Return Jacks Fig 10 1 and 2 Use these jacks
6. Receptacle Fig 10 Item 10 Connection for the detachable 120 VAC power cord Cord wraps are provided in the mixer cover for storage of the cord Circuit Breaker Fig 10 Item 11 The circuit breaker provides protection in the event of internal amplifier failure The breaker is reset by pushing in the red button 4 FIGURE 10 Rear Panel SECTION II SETTING UP THE SYSTEM Speaker Placement Placing the speakers forward of the microphones Fig 11 will allow much higher volume levels before feedback occurs Speaker Connection Fig 12 Connect speaker cables to the phone jacks on the rear panel of the Mixer marked Speaker Use only line or zip cord for speaker connections The use of shielded guitar cords for speaker hookups will cause a loss of volume NOTE Shielded cables can be used in an emergency with no damage to the power amp or speakers AUDIENCE MIXER BOARD SPEAKERS 2 e C MICROPHONES 6 TYPICAL FIGURE 11 Typical Stage Setup FROM SPEAKER 2 JACKS STANDARD SPEAKER CONNECTION NO 1 FROM SPEAKER JACK 1 STANDARD SPEAKER CONNECTION NO 2 FIGURE 12 Speaker Connections Microphones High impedance microphones plug into the Hi Z phone jacks Fig 5 Item 2 Low impedance microphones plug into the Lo Z 3 pin connectors Fig 5 1 Use only the Hi
7. VU Meter Fig 7 3 Monitor Channel Master Level Control Fig 6 Item 2 This provides the same control for the Monitor output that the Main Level contro does for the Main channel Reverb Return Control Fig 6 This controls the amount of the Reverb Return signal whether from the internal reverb or from an auxiliary reverb that is added to the Main and or Monitor mixes Main Channel Rever On Off Switch Fig 6 Item 4 Turns the Reverb Return signal on or off in the Main mix TREBLE MAXIMUM BASS MAXIMUM 4 10 0 FLAT TREBLE MINIMUM BASS MINIMUM 20 50 500 1000 2 700 K 5K 10K 20K AMPLITUDE IN 38 1 FREQUENCY IN Hz FIGURE 4 Pre Amp Response Curves FIGURE 5 Pre Amp Jacks and Level Controls FIGURE 6 Master Section Level Controis Monitor Channel Reverb On Off Switch Fig 5 Turns the Reverb Return signal on and off in the Monitor Mon mix Effects Return Control Fig 6 6 Controls the amount of effects signal added to the Main and or Monitor mixes Main Channel Effects On Off Switch Fig Item 7 Turns the Effects Return signal on and off in the Main mix Monitor Channel Effects On Off Switch Fig 6 Item 8 Turns the Effects Return signal on and off in the Monitor mix Main Equalizer
8. Z or the Lo Z input in each channel at one time Remove the 120 VAC power cord from the inside of the Mixer cabinet top and plug it into the AC socket in the rear of the Mixer Fig 10 10 An accessory AC outlet Fig 10 9 is provided directly above the power cord socket DO NOT remove the grounding prong of the plug it prevents hum and possible electric shock If necessary use a three prong to two prong adapter Preliminary Control Settings 1 Set Channel Main and Monitor Level controls faders to their minimal positions Fig 5 3 Fig 6 1 and 2 2 Turn Gain controls to 25 Fig 3 Item 1 3 Set all Bass and Treble tone controls Fig Item 2 and 3 to the flat center position 4 Set both Main and Monitor equalizers Fig 7 1 and 2 to their flat center positions 5 Effects and Reverb switches should be off Fig 6 Items 4 5 7 and 8 6 Turn the power switch on Fig 10 6 If the VU Meter does not light up check the power cord con nections and the circuit breaker If it lights up but no sound comes from the speakers check the speaker cable connections and the speaker fuse on the rear of the Mixer Fig 10 8 7 Set the Main Level control Fig 6 1 to 4 or Final Control Adjustments Volume While someone is singing into th
9. to bypass the internal reverb system If they are used they are equivalent to the Effects Send and Receive jacks and may be used in the same way EFFECTS RECEIVE OTHER SPECIAL EFFECTS UNIT FIGURE 14 Effects Jack Connections FIGURE 15 Typical Speaker Monitor and Tape Recording Connections Pre Amp Output Jack Fig 16 To use an additional amplifier to power more speakers connect the Pre Amp Output jack to the Input of the additional Power Amp Bi Amping with an additional P A System Fig 17 Connect the Pre Amp Output jack Fig 10 4 to an electronic crossover If the MAG is to be used for bass use bass speaker enclosures and connect the Pwr Amp In jack Fig 10 Item to the low output of the crossover and connect the high output of MAIN SPEAKERS pz TH PRE ame MONITOR SPEAKER OUT OUT the crossover to the additional P A amplifier which should use high frequency speakers If the MAG is to be used for highs reverse the System Speaker Output Jacks and Speaker Systems The Power Amp will supply 200 watts into a 4 ohm load through a5 amp fuse mounted on the rear panel The fuse protects the amplifier from damage which could be caused by speaker loads of less than 4 ohms Replace the fuse only with the same type Each speaker system enclosure is 8 ohms and has two jacks in parallel Two systems connected
10. CTION Setting Up The System 8 Speaker Placement 8 Speaker Connection 8 MIGIOCNONGS b naa PN 8 Power COn wear iene eee ORS 8 Preliminary Control Settings 9 Final Control Adjustments 9 eae es 9 9 Master Section Reverb Return and Effects Return Switches Emphasizing One Instrument on the Monitor Speakers 9 72 tare seen Reeth nea 9 Explanation of the Equalizer Controls 10 Mixer Use 10 Use of an Additional Mixer 10 Effects Send and Receive Jacks 10 Monitor Out Jack eat a anes 10 Auxiliary Reverb Send and Return Jacks 10 Pre Amp Output Jack 11 Bi Amping with an Additional System 11 Speaker Output Jacks and Speaker Systems 11 Pre Recorded 5 11 BOCONG 11 SECTION Ill 6 Channel PA Speaker System 13 12 HF Speaker Enclosure System 13 LIST OF FIGURES FIGURE NO DESCRIPTION PAGE NO 1 Pre Amp Section one channel of six Diagram 1 2 Master Section Block Diagram 2 Pre Amp Section Controls 2 ox Seen 3 4 Pre Amp Response Curves
11. The electrical connection to the speakers is achieved through either of the two 14 phone jacks connected in parallel on the rear of the cabinet The nominal impedance of each speaker system is 8 ohms The two speaker systems connected in parallel will provide the desired 4 ohm amplifier load FIGURE 19 Speaker Column NOTE SEE ACCOMPANYING LIMITED WARRANTY FOLDER MADE IN U S A BOX 4137 1300 EAST VALENCIA DRIVE e FULLERTON CALIFORNIA 92634
12. annel Reverb On Off Switch Effects Return Control Main Channel Effects On Off Switch Monitor Channel Effects On Off Switch Main Equalizer 5 Slide Controls Monitor Equalizer 5 Slide Controls a Input Connectors Auxiliary Connectors Front Panel Direct Inputs MAM a r y a oe 8 8 we ns 534 5 6 4 6 4534 4 Send Receive Reverb Foot Switch Jack Auxiliary Jacks Rear Panel Auxiliary Reverb Send Auxiliary Reverb Return Power Amp Input Pre Amp Output Monitor Pre Amp Output e a 3 v a 6 Additional Rear Panel Controls and 5 Power On Off Switch T Speaker Output 7 Speaker FUSE ee 7 Accessory AC Outlet 7 Line Cord Receptable 7 Circuit Breaker 7 SE
13. e microphone at a performing level slowly turn up the Channel Level control until the speakers are producing the desired volume NOTE lf the red overload warning light just above the Channel Gain control is glow ing the P A will probably sound dis torted To get the cleanest possible sound and best signal to noise ratio turn the Gain control counterclockwise slowly until the light flickers A performer with a quiet singing voice may require the Gain control to be set to the full clockwise position Line level devices like tape recorders will probably need to have the Gain control set to almost the off or fully counterclockwise position The Gain contro is ahead of the Pre Amp Moni tor control and therefore affects the Monitor volume Tone The tone controls Fig 2 and 3 are ahead of the overload warning light This means that boosting the Treble and or Bass may cause the red light to glow indicating overload of the Channel Simply turn the Gain control counterclockwise until the light flickers lf reverb is desired turn the Pre Amp Effects Reverb control Fig 3 4 to the right clock wise If external effects are to be used turn the channel Effects Reverb control to the left The center position no effects or reverb NOTE Also turn on and adjust the Master Reverb or Effects Return controls and switches Fig 6 The reverb footswitch when plugged in
14. ency content of the input signal See Figure 4 for frequency response curves TREBLE CONTROL CHANNEL LEVEL MAIN SUMMING BUS REVERB SUMMING MONITOR BUS LEVEL E MONITOR SUMMING BUS FIGURE 1 Section one channel of six Block Diagram weeg 208 49 5 sng 5103333 LINN sna 5 934 YOLINOW sng ino HOLINOW YOLINOW 3 HOLINOW 5123333 NOW _ 5103343 TANNVHS 13A31 493333 51923333 NIVW 5 gt inant syovr 1503 5 5 193810 NIVIN ne 9 NG NINWNS YIMOd NIV ino 15 13437 NIV Bass Control Fig 3 This boosts or cuts the low frequency content of the input signal See Figure 4 for the frequency response range of this control Effects Reverb Eff Rev Control 3 4 Turning this control clockwise from the center detented p
15. iele aligned vented enclosure The remaining pages of this Manual detail the functions of the various controls and jacks in total the unit has 55 controls and 24 connectors and jacks BEFORE ATTEMPTING TO USE THE SYSTEM FAMILIARIZE YOURSELF WITH THE INFORMATION CONTAINED IN THIS MANUAL SECTION I FUNCTIONAL BLOCK DIAGRAMS The architecture of the System is explained most easily with the accompanying functional block dia gram which is divided into two sections the Pre amplifier Fig 1 and the Master Control Fig 2 Although only one preamplifier is shown the actual System has six which are identical INPUT CHANNEL CONTROL FUNCTIONS Gain Control Fig Item 1 This adjusts the gain of the microphone pre amplifier allowing adjustment of the Mixer to pro vide the optimum signal to noise ratio for the par BASS CONTROL CLIP A 7 WARNING LEVEL Hi Z INPUT alt LOZ INPUT ticular input source to that channel With a normal input signal when the red LED overload warning light Fig 3 6 is just flickering the control is properly set If the light glows continuously the control should be turned down until the light just flickers to avoid audible distortion The gain control affects both the Main and the Monitor mixes Normally once the Gain Control has been set it will not need to be changed Treble Control Fig 3 2 This boosts or cuts the high frequ
16. osition sends the signal from this channel to the internal reverb unit or an auxiliary unit if one is plugged in Turning the control counterclockwise sends the signal to the Effects Send jack located on the lower portion of the control panel oS FIGURE 3 Section Controls This is a post fader control that is the level of the signal is a function of the Channel Level control Monitor Control Fig 3 5 This control establishes the monitor mix in the same way as the Channel Level control establishes the main mix It is independent of the Channel Level control so that the monitor mix will not be changed by changes in the main mix The monitor signal however is a function of the channel Bass and Treble controls so that a more representative monitor mix can be obtained Channel Level Control Fig 5 Item 3 This controls the level of the signal going into the main mix and the level going to the Effects Reverb control MASTER SECTION CONTROL FUNCTIONS Main Channel Master Level Control Fig 6 Item 1 This adjusts the composite level for the Main channel output It actually controls the gain of the summing amplifier thereby preventing it from over loading This means that the Channel Level con trols can be operated at higher levels while the Master Level can be operated at lower levels improving the useable signal to noise ratio Loud ness of the Main channel is indicated by the
17. r chaining additional mixers Chaining is discussed in Section under MIXER USE Monitor Fig 9 2 Same as above for the Monitor summing amplifier FIGURE 7 Equalizer Controls and VU Meter AMPLITUDE IN dB 20 50 100 500 1 2K 10 0 Ni 000 5K 10K 20K FREQUENCY IN Hz FIGURE 8 Equalizer Response Curves EFFECTS Send Fig 9 3 This jack is used to send the signal from the 6 channels to the external effects device mini mum 2K ohms impedance providing that the Rev knob Fig 3 4 is in the proper position as noted in Effects Reverb Control Receive Fig 9 4 This jack receives the output signal from the external effects device and routes the signal to the Effects Return control The nominal input impedance for this jack is 10K ohms The signal level should be at least 100 mV rms REVERB FOOT SWITCH JACK Fig 9 Item 5 Provides connection for the Reverb Foot Switch which turns the reverb on or off It functions only if the front panel controls are set to provide reverb FIGURE 9 Master Section Effects Direct Inputs Reverb Jacks AUXILIARY JACKS Rear Panel Auxiliary Reverb Send Fig 10 Item 1 This jack is used to provide an input signal to an external reverb unit bypassing the internal reverb unit Auxiliary Reverb Return Fig 10 Item 2 This jack i
18. s used to connect the output of the external reverb unit to the Mixer disconnecting the internal reverb unit Power Amp Input Fig 10 Item 3 This jack is used to connect an external signal directly to the internal power amplifier input im pedance 5K ohms disconnecting the internal signal Pre Amp Output Fig 10 4 This jack provides the Main channel mixer output just ahead of the power amplifier for use in external devices The load impedance on this signal should not be less than 5K ohms Monitor Pre Amp Output Fig 10 5 The Monitor channel output is present at this jack It should be connected to an external power amplifier minimum 2K ohms impedance and monitor speakers ADDITIONAL REAR PANEL CONTROLS AND CONNECTORS Power On Off Switch 10 6 Speaker Output Fig 10 Item 7 Two jacks wired in parallel for connection of the speaker systems to the power amplifier Total im pedance of the speakers should not be less than 4 ohms Speaker Fuse Fig 10 Item 8 This fuse is connected in series with the speaker jacks It protects the speakers in the event of an amplifier failure and protects the amplifier from a low impedance load This fuse is 5 amperes and should be replaced only with the same type Accessory AC Outlet Fig 10 Item 9 This can be used for connecting other electronic devices which do not require more than 400 watts input power Line Cord
19. switches the internal or external if used reverb on and off in both the Main and Monitor speakers Set the Channel Level controls Fig 5 3 for the proper mix or blend Use the Main Level control Fig 6 ltem 1 to set the overall volume level The preceding covers the basic set up of the MA6 P A System The following are some extra features and operating notes Master Section Reverb Return and Effects Return Switches Fig 6 Items 4 5 7 and 8 Adding reverb either through the Main channel or Monitor channel increases any system s tendency to feedback or ring A singer may want the audience to hear some reverb through the Main speakers but he wants a higher volume level through the Monitor speakers If he turns off the Monitor reverb he can turn the Monitor volume up higher before feedback occurs Emphasizing One Instrument on the Monitor Speakers If it is desirable for one of the instruments to be especially emphasized on the Monitor speakers this can be done by connecting an extra input cord from that instrument to the Effects Receive jack Fig 9 4 and turning on the Effects Return Monitor switch Fig 6 8 Then adjust the Effects Return control Fig 6 6 to the desired volume Equalizers The MA6 has two 5 band graphic equalizers Fig 7 Item 1 and 2 one for the Main speakers and one for the monitors These equalizers are used to adjust the tonal quality to suit
20. the acoustics of the room and to give more volume before feedback occurs Exam ple If the room has resonance around 120 Hz simply lower the 150 Hz equalizer control until the feedback disappears The center position indicates flat response Explanation of the Equalizer Controls 150 Hz This is a shelving type control and acts like a bass tone control Too much boost and the System will sound muddy Cutting this control a bit will help eliminate feedback from a miked acoustic guitar as well as cleaning up the vocals by minimizing bass frequencies from bass drums basses and foot tapping 500 Hz Peaking Important vocal range Don t touch unless you have to and then be judicious about it Boosting can cause any singer to sound like a horn 1 kHz and 2 kHz Peaking Very important as most instruments have harmonics in this range Boosting these frequencies causes the System to sound nasal or tinny Sometimes cutting 2 kHz slightly can bring the vocals on top of the music 5 kHz This is a shelving type control and acts like a treble tone control Maximum shelf is at 10 kHz A slight boost with this control adds presence or better definition of voices Too much boost and the System will ring MIXER USE Use of an Additional Mixer Fig 13 The Fender MA6 can be used either as a Master unit when chaining another mixer to gain additional input channels or aS an expander
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