Shure M367 Microphone
Contents
1. 48 Vdc or 12 V phantom power for condenser microphones e 1 kHz tone oscillator e Mutes all input channels when activated Tone level control is on the master e Wide range input gain controls handle hot signal levels without attenuators e Customized operation via internal DIP switches trim pots and optional alternate wiring e Battery check switch and low battery warning indication e Power on LED e Input expansion via mix bus jack to link M367s or other mixers e Rugged all metal chassis with protective end caps e Detachable AC power cord et CE Printed in U S A wo FRONT PANEL CONTROLS AND INDICATORS IMITER 1kHz ONE PEA a a oy rs Pi Py E PEAK iia ee el ee sel gel M O a O a OFF ON aan be OFF ON BATT O aay CHECK COCO OG GOR MASTER M367 FRONT PANEL CONTROLS AND INDICATORS FIGURE 1 Input Gain Control For best performance adjust each Input 9 Power On Off Switch Turns the mixer on and off Gain Control so the associated Input Peak LED illuminates red 10 Power On LED only on the loudest signal peaks Input Low Cut Filter Switch Provides low frequency roll off Green poweron to reduce wind noise and rumble When using the filter the frequency response is down 7 dB at 150 Hz Roll off slope is 6 dB per octave Input Peak LED Illuminates at 6 dB below clipping 11 Dual function control knob Limiter Switch Activates a fast acting peak responding Headphones Gain Contro2. To set the VU meter to a value other than the factory setting 0 VU 4 dBm proceed as follows 1 Connect a 600 Q load to an XLR output set for Line 2 Connect an ac voltmeter with 1 MQ or greater input impedance Fluke 77 or equivalent in parallel with the load 3 Set the 1 kHz tone oscillator switch to the ON position 4 Adjust the 1 kHz tone oscillator level with the Master gain con trol until the ac voltmeter reading is at the level desired 5 With the M367 top cover removed adjust the VU Level Cali bration trim pot R684 with a screwdriver until the VU Meter reads 0 6 For 0 VU settings between 4 and 8 dBm set internal DIP switch S701 position 1 down and perform steps 1 through 5 VU METER q CALIBRATION q TRIMPOT VCA DISTORTION TRIMPOT R684 R607 a ACCESSED THROUGH DIP SWITCH 701 q sa lt 7 INTERNAL ADJUSTMENTS FIGURE 5 INTERNAL MODIFIABLE FUNCTIONS NOTE Only qualified service technicians should perform these modifications Perform all modifications through solder points accessible on the main PC board DISASSEMBLING THE M367 1 Remove the mixer top cover as previously described 2 Carefully remove three multi pin cable assembly connectors from upper front PC board nearest front panel Remove the three Phillips head screws securing the PC board Remove up per front PC board 3 Carefully remove four multi pin cable assembly connectors from upper rear PC
3. 87 dB 40 dB 103 dB 66 dB 27 dB Microphone inputs of up to 3 Vrms cause no damage Line and 150 Q monitor can withstand signals of up to 30 Vrms Input Peak Indicators Line 37 dB 11 dB 53 dB 15 dB 25 dB 6 dB below clipping level Monitor z z 12 dB E 7 Output Peak Indicator oe Lights red at 6 dB below clipping level Mix Bus 10 dB 38 dB 26 dB Output Clipping Level M367 lt 18 dBm at line output into 600 Q IE eae 20B aan Low Cut Filters Kaien amp 7 dB down at 150 Hz 6 dB octave slope 3 dB down at 260 Hz M267 Tone Oscillator Input 1 kHz 20 nputs Limiter IMPEDANCE Input Threshold Switchable 0 4 8 16 dBm Attack Time 1 ms 0 5 ms Input Designed for Actual Clipping Release Time Constant 100 ms 30 ms Use With Internal Level Indicator Green when limiting by 1 dB or more Mic 19 to 600 Q 1kQ 10 dBV Phantom Power T TOKO 0KG EEN 12 V Phantom 12 V through 340 Q lt A 7 48 V Phantom 48 V through 3 4 kQ Monitor lt 1kQ 13 kQ 0 dBV AC Power Mix Bus 930 Q bal 930 Q bal 23 dBV M367 100 120 Vac 50 60 Hz 100 mA M367 1860 Q unbal 1860 Q unbal E 220 240 Vac 50 60 Hz 50 mA no signal current drain Mix Bus 3 5 KQ 3 5 KQ 17 dBV DC Power M267 18 Vdc nominal at 40 mA typical no signal 45 mA typical at 4 dBm output 13 5 Vdc minimum Outputs Batteries Two 9 V alkaline batteries IMPEDANCE Output Battery Life Up to 8 hours at 4 dBm output in continuous use Output Designed for Actual Clipping see Battery
4. M367E 220 240 VAC 50 60 Hz The operating voltage can be switched internally see Internal Modifiable Functions NOTE Appliance inlet is the main disconnect device to power off the M367 you must unplug the power supply BATTERY OPERATION Open the battery compartment by grasping the sides of the compartment squeezing to release the locks and pulling the com partment outward Insert two 9 volt batteries During battery operation use the BATT CHECK button Press and hold to show battery level on the VU meter Press once to illu minate the VU switch for 10 seconds or set DIP switch 6 for con tinuous illumination see DIP Switches BATTERY LIFE With two fresh 9 volt alkaline batteries the M367 operates for about eight hours Some mixer features decrease battery life as il lustrated in the following table NOTE Momentary use of headphones or meter illumination will not appreciably affect battery life Mixer Operation Battery Battery Current Life mA hours No Signal 40 9 With 4 dBm continuous output 45 8 With six mics at 12 V phantom power 55 6 5 With six mics at 48 V phantom power 70 5 With output to headphones 50 7 With meter illumination continuously on 75 4 5 until Power LED begins to flash allowing approximately 30 minutes to replace batteries CONNECTING M367 OUTPUTS TO TELEPHONE LINES Use the XLR outputs at line level to drive dc biased
5. Operation Use With internal revel Temperature Range Mic Low Z inputs 1Q 31 dBV Operating 18 to 57 C 0 to 135 F Line 600 Q 150 Q 18 dBm Storage 29 to 74 C 20 to 165 F Overall Dimensions H x W x D Phones 8 to 200 Q 300 Q 11 dBV 71 9 mm x 308 mm x 233 mm 2 13 16 in x 12 R 5 32 in x 9 5 32 in including feet Mix Bus 930 Q bal 930 Q bal 11 dBV f i Weight without batteries M367 1860 Q unbal 1860 Q unbal 3 kg 6 6 Ib Mix Bus 3 5 kQ 3 5 kQ roe dew Measurement conditions unless otherwise specified operating M267 voltage 120 Vac 60 Hz 18 1 Vdc for dc test operating tempera ture 22 C 72 F input signal 1 kHz internal DIP switches 1 7 open Power switch on Mic Line switches to Line low cut switches to flat Limiter out Phantom power off Mix Bus to M367 channel 1 gain full CW channel 2 through 6 full CCW Master full CW Phones level full CCW Line output terminations 600 Q pins 2 and 3 Mic output ter minations 150 Q pins 2 and 3 Phones 1 4 ring 300 Q to ground Phones 1 4 tip 300 Q to ground Phones 3 5 mm unloaded Mix Bus 930 Q M367 position or 3 5 kQ M267 position not connected unless specified 1 kHz input signal REPLACEMENT PARTS Foot Kit 4 in Kit esatcn 90S8100 M367 Fuse 0 125 A 250 V ooo ceeseeseeceeeeeeeeeaeaaeenes 80E380 M367E Fuse 0 063 A 250 Vou ceesceseeceeeeeeeeeeeaeeees 80G380 Knob Masten en bid vedscdeotdfeadsutodsvduvestecedsscase
6. True VU BALLISTICS Locate empty pads X691 at left of VU meter M1 Solder a 100 uF x 6 3 V electrolytic capacitor through the holes of X691 Ob serve capacitor polarity as marked on the PC board The response time is now 500 ms with no overshoot To further slow the meter response use a larger capacitor value CHANGING MIC LEVEL OUTPUT IMPEDANCE Locate resistor R631 near output transformer T601 and remove it Locate empty pads X631 near T601 Solder desired value 1 4 W resistor through the holes of X631 For example use a 150 Q 1 4 W resistor for 150 output impedance ADAPTING LINE OUT TO DUAL BANANA JACK Add a dual banana jack balanced line level output capability by purchasing a commercial unit Sescom XLR F 3BP or equivalent or obtaining a female XLR connector Radio Shack 274 011 or equivalent a dual banana jack ITT 2269 or equivalent a small utility box and a short length of high quality shielded output cable and constructing the adapter shown in Figure 6 DUAL BANANA JACK OUTPUT FIGURE 6 Connect this adapter to the M367 Line output CHANGING MONITOR IN TO AUX IN NOTE This modification disables the M367 s monitor function Remove resistors R642 and R647 near Phones potentiometer R648 Locate empty pads X601 near output transformer T601 and X643 near Monitor In jack J683 Solder a jumper wire from X643 to X601 The Monitor In jack is now an un
7. dialed up telephone lines A slight increase in distortion may occur Use the M367 limiter with the limiter threshold set to 4 dBm Modify the M367 output impedance to 600 Q for proper fidelity see Internal Modifiable Functions When connecting the M367 to a telephone line you must use an FCC Registered interface adapter between the mixer and telephone line SETTING LEVELS 1 Set the MASTER gain knob to the full off position 2 Activate the 1 khz tone oscillator by setting the 1 KHZ TONE switch to ON Adjust the MASTER gain until the VU meter needle indicates 0 Adjust the input levels on the equipment connected to the M367 outputs accordingly Deactivate the tone by setting the 1 KHZ TONE switch to OFF 3 Adjust the Input gain controls based on the incoming signal levels The input PEAK LEDs should flicker red only on loud input peaks 4 Observe the output on the VU meter and adjust the MASTER gain to obtain the desired levels try to keep the average levels around 0 VU The PEAK LED adjacent to the VU meter should illuminate only on loud output peaks DIP SWITCHES 1234567 701 Access the DIP switches by removing the battery compartment and top cover Use the following table to set the switches Bold factory setting S Function Up Down F 2 1 Meter 0 VU 0 VU 4 dBm 0 VU 8 dBm 2 Limiter See Figure 4 Threshold 3 4 Program to off On adds attenu Monitor ated program signal i
8. maintain optimum stereo separation MASTER GAIN REMOTE CONTROL NOTE This modification disables both the M367 s monitor function and its front panel Master gain control 1 Remove resistor R641 near Monitor In jack J863 2 Remove resistor R746 near Master potentiometer R706 3 Locate empty pad X702 near Master potentiometer R706 Solder one end of a 100 Q 1 4 W resistor in the hole of X702 Solder an insulated wire to the other end of the 100 Q resistor Locate empty pad X644 near jack J863 Solder the other end of the insulated wire to X644 4 Locate empty pad X701 next to empty pad X702 Solder an insulated wire to X701 Locate empty pads X645 near jack J863 Solder the other end of the insulated wire to the empty pad X645 nearest channel 6 input connector J856 5 Construct a remote control potentiometer cable assembly as shown in Figure 7 O T a O TIP OS O O RING CW O z l O SLEEVE MASTER GAIN REMOTE CONTROL FIGURE 7 Recommended parts are Potentiometer 10 25 KQ linear taper Radio Shack 271 1715 1 4 in Stereo Phone Plug Switchcraft 280 Ferrite Bead Rings Ferronics 21 031J Capacitors ceramic 0 001 uF 50 V Cable 2 conductor shielded 50 ft maximum 15 m Ferrite bead rings and capacitors should be as close to the phone plug as possible 6 Insert the phone plug in the Monitor In jack The remote con trol potentiometer now controls M367 gain with a contro
9. stereo tip ring sleeve plugs When connecting other types of Shure mixers construct a mix bus cable with a 1 4 in mono phone plug tip signal sleeve ground and the appropriate connector for the other mixer s mix bus jack see Figure 3 Time Delay Fuses BALANCED EED 5 TO M367 2 UNBALANCED ci i TO M367 N C TO M267 MIX BUS CONNECTIONS FIGURE 3 Channel Inputs These female XLR inputs are transformer balanced to provide superior rejection of hum RFI and other interference Monitor In Jack Accepts mono line level signals tip signal sleeve ground for tape return or a communications chan nel input See Pull Monitor switch description You can also modify the MONITOR IN jack to accept a stereo input and provide a stereo sum monitor signal see Internal Modificable Functions Mixer Output These male XLR outputs are transformer balanced The Line output is preset to line level but can be modified to a true 600Q output impedance or changed to microphone level see Inter nal Modifiable Functions Power Connector See AC Operation The slide out compartment contains two power line fuses The outer toward you is a spare M367 0 125A 250V fuse M367E 0 063A 250V fuse WARNING For continued protection against fire replace with the same type and rating of fuse AC OPERATION Use the supplied power adapter to connect the M367 to a power outlet M367 100 120 VAC 50 60 Hz
10. 2140 Fax 49 7131 721414 In Asia Phone 1 852 2893 4290 Fax 1 852 2893 4055 International Phone 1 847 600 2000 Fax 1 847 600 6446
11. SHURE Model M367 User Guide SIX CHANNEL MICROPHONE MIXER DESCRIPTION The Shure M367 is a portable six input two output mono battery powered microphone and line level mixer preamplifier Its transformer isolated design low noise performance and compact and rugged construction make the M367 an ideal choice for studio and mobile broadcast electronic news gathering ENG and electronic field production EFP applications This versatile mixer can also be used for the following e Digital transmission links e Digital video audio recording media ISDN hard disk recording and DAT Sound reinforcement The M367 comes with rubber feet detachable power cord and spare power line fuse It can be rack mounted using the optional Model A367R rack mount kit FEATURES e Six selectable mic line inputs e Selectable mic line output and dedicated line output e Transformer balanced inputs and outputs for superior rejection of RFI and electromagnetic hum e Professional mechanical VU meter LED backlighting for high reliability no lamp replacement e Headphone monitoring 3 5 mm 1 4 in e Output peak limiter with switchable threshold and bi colored LED indicator e Peak indicator LED and switchable low cut filters on each input 1 4 in return monitor input AC power or 2 9V battery operation 2005 Shure Incorporated 27C8511 Rev 4 LIMITER i UT N AASTER ADDITIONAL FEATURES
12. ate the VU meter for 10 seconds or set DIP switch 6 to toggle the meter light see DIP Switches REAR PANEL CONNECTORS AND CONTROLS 100 120 VAC 50 60 Hz 100 mA IO IN REAR PANEL CONNECTORS AND CONTROLS FIGURE 2 Mic Line Level Output Switch line level Phantom Power Switch Adds 12 volt phantom power to all inputs set to MIC Use DIP switch 7 to increase voltage to 48 volts see DIP Switches Mic Line Level Input Switches 1 6 Sets input to microphone or line level Phantom power is disabled for inputs set to LINE M267 M367 Mix Bus Level Switch Set to M267 when con necting to a SHURE M267 FP42 FP51 M67 or SE30 Use the M367 setting with another M367 or SHURE FP32A Sets output to microphone or IMPORTANT Unless required leave the mix bus LEVEL switch in the M367 position The M267 setting may increase mixer out put noise up to 30 dB depending on the MASTER output setting Mix Bus Jack Allows you to connect the M367 to another mixer The mix bus connection is two way and pre master When two M367 mixers are connected all 12 inputs appear at both mixers outputs The MASTER gain control of either M367 can be adjusted without affecting the other mixer s output NOTE The output level of each M367 mixer drops by 6 dB when connected through the MIX BUS increase the Master Gain to compensate For a balanced mix bus connection between two M367s use a mix bus cable with two 1 4 in
13. balanced tip positive sleeve ground Aux In jack with an input impedance of 11 kQ and a maximum gain to Line Out loaded with 600 Q of 17 dB The Aux In signal is only controlled by the Master control To change Aux In gain locate resistor R605 near X601 Care fully remove R605 and replace it with a surface mount resistor 0805 package of the desired value If replacing R605 with 15 kQ maximum Aux In to Line Out gain equals 14 dB and input impedance equals 16 KQ if replaced with 6 8 KQ maximum Aux In to Line Out gain equals 20 dB and input impedance equals 7 8 kQ CHANGING MONITOR IN HIGH GAIN DIP Switch S701 Position 5 Down Locate resistor R647 near Phones potentiometer R648 and re move it Locate empty pads X647 near R647 Solder a 330 9 1 4 W resistor in the holes of X647 for 6 dB gain boost with DIP switch S701 position 5 down input impedance equals 6 5 kQ in this position CHANGING MONITOR IN JACK FROM MONO INPUT TO STEREO SUM INPUT Locate empty pads X645 near Monitor In jack J863 Solder a 1 KQ 1 1 4 W resistor in the holes of X645 The Monitor In jack will now accept a stereo input signal tip left ring right sleeve ground and sum these signals to the monitor circuit NOTE If using a true stereo feed to drive the M367 Monitor In and another stereo device the source impedance must be 20 Q or less to maintain at least 40 dB separation in the stereo device Use a stereo distribution amplifier or buffer to
14. board nearest rear panel Remove the three Phillips head screws securing the PC board Remove upper rear PC board 4 Perform modification refer to appropriate following proce dure Note that all modifications can be performed without removing the main PC board 5 Reassemble M367 by performing above steps in reverse assembling the Phillips screws in the order indicated on the upper front and upper rear PC boards CHANGING LINE LEVEL OUTPUT IMPEDANCE TO 600 Q Locate resistor R621 near IC U602 pin 8 on the main PC board and remove it Locate empty pads X621 near resistor R621 Solder a 430 Q 1 2 W resistor through the holes at X621 CHANGING UNSWITCHED LINE OUTPUT TO MIC LEVEL Locate resistor R632 near output transformer T601 and remove Locate empty pads X632 near transformer T601 Solder a jumper wire through the holes of X632 CHANGING MIXER AUDIO LEVELS IN HEADPHONES Pull Monitor Switch Activated DIP Switch S701 Position 4 Closed Locate empty pads X649 near Phones potentiometer R648 Solder a 68 kQ 1 4 W resistor through the holes at X649 to hear program audio 12 dB down from standard headphones level with Pull Monitor switch on pulled out Solder a 24 kQ 1 4 W resistor through the holes at X649 to hear program audio 6 dB from standard headphones level with Pull Monitor switch on pulled out CHANGING LOW CUT FILTER CORNER FREQUENCY 3 DB DOWN POINT To decrease corner frequency 1 Calculate new ca
15. l Rotate to adjust headphone ae rae level limiter optimized for speech An internal modification can 5 pane Pull Monitor Switch When using headphones pull out to ie aga release LIne for musi signals Bes Oe listen to audio from the MONITOR IN jack Add attenuated moi program signal using DIP switch 4 see DIP Switches Output Peak Limiter Bi Color LED Flashing low batteries about 30 minutes of operation remaining Red output signal at 12 dBm WARNING 6 dB below clipping The headphones circuit can produce high volume levels that can damage the user s hearing Make sure headphone volume Green output signal at limiter threshold setting PHONES is low Full CCW before putting when limiter is on headphones on Output Level VU Meter Meter response approximates true VU characteristics about 300 ms rise and fall 1 to 5 over 12 Headphones Outputs Stereo 1 4 in and 3 5 mm phone shoot For a slower response see nternal Modifiable Func jacks tions 0 VU is switchable between 4 and 8 dBm see DIP 13 Master Gain Control Sets mixer output gain Set to 0 dB Switches When using batteries use the BATT CHECK position for unity gain switch to illuminate the meter 1 kHz Tone Oscillator Switch Sends a 1 kHz tone to all out puts and mutes all inputs The MASTER control adjusts tone level Battery Check Button Press and hold to show battery level on the VU meter Press once to illumin
16. l taper similar to that of the Master gain control CHANGING LIMITER RELEASE TIME TO ONE SECOND Remove resistor R741 about 15 mm behind ribbon cable assembly W813 CHANGING LIMITER THRESHOLD PRESETS 1 Select the equivalent resistor values for the desired limiter thresholds from the following table Then fill in the following work sheet with the resistor selections Limiter Threshold Requiv Limiter Threshold Requiv dBm into 600 kQ dBm into 600 kQ 0 18 10 81 1 21 11 93 2 25 12 105 3 30 13 122 4 35 14 139 5 41 15 156 6 47 16 175 54 17 194 8 62 18 215 9 71 DIP Switch 701 Limiter Threshold Requiv above Position 2 Position 3 _ dBm _ up up high hoa kQ R1 down up med high ee kQ R2 up down med low 2z 7 kQ R3 down down low a kQ R4 2 Remove resistors R721 R731 R732 R733 R734 and R735 surrounding IC U704 3 Locate empty pads X732 X733 X734 and X735 surrounding IC U704 4 Select a 1 4 W 1 resistor closest in value to R1 from the work sheet and solder it to the holes of X732 Note Use parallel or series combinations of resistors to match the chosen values as closely as possible if 1 resistors are not 5 Calculate resistor R5 value as follows available 1 R5 ae ce ie oe R2 R1 Select a 1 4 W 1 resistor closest in value to R5 and solder it to the holes of X733 10 6 Calculate
17. n headphones with Pull Monitor switch on 5 Monitor In Normal High Gain 6 VULamp Batt Timed Turns off Toggled press on Check button after 10 seconds press off 7 Phantom 12 Vdc 48 Vdc Power Limiter Threshold 16 dBm 8 dBm 4 dBm 0 dBm LIMITER THRESHOLD SETTINGS FIGURE 4 SPECIFICATIONS Frequency Response 20 to 20 000 Hz 2 0 dB channel controls centered Total Harmonic Distortion 0 25 THD at 4 dBm output 55 to 20 000 Hz Voltage Gain Polarity Mic Line In to Mic Line Out Non Inverting Mic Line In to Phones Non Inverting Equivalent Input Noise lt 127 dBV with 150 source 400 to 20 000 Hz Output Noise Master level full CCW 100 dBV 400 to 20 000 Hz Master level full CW 80 dBV 400 to 20 000 Hz Hum and Noise Equivalent Input lt 125 dBV 20 to 20 000 Hz Output 95 dBV Master CCW 75 dBV Master CW 20 to 20 000 Hz Common Mode Rejection Ratio 65 dB at 100 Hz 20 dBV input Mic Line In to Mix Bus tip Inverting Output Monitor to Phones Non Inverting Input Line Mic Phones MixBus Mix Mix Bus to Mic Line Out Inverting M367 Bus x Overload and Shorting M267 Shorted outputs even for prolonged periods cause no damage Low ZMic
18. nergy and if not installed and used in ac cordance with the instructions may cause harmful interference to radio communications However there is no guarantee that inter ference will not occur in a particular installation If this equipment causes harmful interference to radio or television reception deter mined by turning the equipment off and on try to correct the inter ference by one or more of the following measures 1 Reorient or relocate the receiving antenna 2 Increase the separation between the equipment and receiver 3 Connect the equipment into an outlet on a circuit different from that to which the receiver is connected 4 Consult the dealer or an experienced radio TV technician for help INTERNAL ADJUSTMENTS NOTE Only qualified service technicians should perform these modifications These internal adjustments require only removal of the top cover 1 Remove battery compartment 2 Remove four screws securing two plastic end caps and one ground bonding screw on the side opposite the battery com part ment 3 Slowly slide cover up and off chassis VCA DISTORTION TRIMPOT R607 DO NOT ADJUST This potentiometer is precisely calibrated on each mixer for minimum distortion VU METER ADJUSTMENT R684 This trimpot adjusts the VU meter to indicate 0 VU at a preset output level The factory setting is 4 dBm The user adjustment range is 10 dBV to 4 dBm 6 dBV to 8 dBm with DIP switch 1 down
19. pacitor value for lower low cut corner frequency Use the following formula C in pF 85 frequency 0 33 Example for 200 Hz corner frequency 85 200 9 0 43 0 43 0 33 0 1 For 200 Hz corner frequency use a 0 1 uF capacitor NOTE Capacitor must be non polarized ceramic or film type 16V rating or higher Pad Channel Pad Channel X421 1 X451 4 X431 2 X521 5 X441 3 X531 6 2 Locate the following empty pads Find all pads near ribbon cable assemblies W811 W812 and W813 3 Solder a new capacitor through the holes of the empty pads for each channel to be modified To increase corner frequency Note Low cut corner frequencies much higher than the factory preset of 260 Hz may excessively attenuate desired low to mid frequency program material 1 Locate the following capacitors near empty pads Capacitor Pad Channel Capacitor Pad Channel C425 X421 1 C455 X451 4 C435 X431 2 C525 X521 5 C445 X441 3 C535 X531 6 2 Remove the indicated capacitor for each channel to be modified 3 Calculate new capacitor value for higher high cut corner fre quency Use the following formula C in pF 85 frequency Example for 400 Hz corner frequency C 85 400 0 21 For 400 Hz corner frequency use a 0 22 uF capacitor 4 Solder a new capacitor through the holes of the empty pads for each channel to be modified SLOWING OUTPUT METER FROM
20. resistor R6 value as follows p Legni R3 R1 Select a 1 4 W 1 resistor closest in value to R6 and solder it to the holes of X734 7 Calculate resistor R7 value as follows 1 a ee ct ed ed R4 R1 R5 R6 Select a 1 4 W 1 resistor closest in value to R7 and solder it to the holes of X735 See Changing Limiter Threshold Presets Samples Calculations later in the Appendix for an example of limiter threshold preset component calculations R6 R7 CHANGING LIMITER THRESHOLD PRESETS SAMPLES CALCULATIONS For the following limiter thresholds DIP Switch S701 Limiter Threshold Requiv Position Position dBm ee 2 3 up up high 12 105 kQ R1 down up med high 8 62 kQ R2 up down med low 4 35 kQ R3 down down low 0 18 kQO R4 1 Obtain a 105 KQ 1 4 W 1 resistor and solder it to the holes of X732 2 Obtain a 150 kQ 1 4 W 1 resistor and solder it to the holes of X733 st Rs 1 E 1 62 000 105 000 3 Obtain a 52 3 KQ 1 4 W 1 resistor and solder it to the holes of X734 151 4 kQ 1 Re 1 eae aes 52 5 kQ 35 000 105 000 Obtain a 49 9 KQ 1 4 W 1 resistor and solder it to the holes of X735 gt j rea s E Le 18 000 105 000 150 000 52 300 49 4 KQ SHURE SHURE Incorporated Web Address http www shure com 5800 W Touhy Avenue Niles IL 60714 4608 U S A In U S A Phone 1 847 600 2000 Fax 1 847 600 1212 In Europe Phone 49 7131 7
21. useg 95A8238 Channel Gain PhOnes ccccssseseeceeeeeeceeeeaneeneeees 95B8238 Line Power Cord WSO Pa sccctechee te ca toxeacctnees A ave ecbaaee 95A8389 MISG AB ses tince fos e 95B8389 OPTIONAL ACCESSORIES Rack Mount Kitcar ae e N E A367R STATEMENT OF CONFORMITY This certifies that the Shure M367E Microphone Mixer meets the specifications and regulations embodied in Vfg 243 1991 amend ed 1992 The Bundesamt f r Zulassungen in der Telekom munika tion has been notified that this device has been marketed and has been provided the right to verify the device or system for compli ance with the specifications Conforms to European Union directives eligible to bear CE mark ing VDE GS Certified to EN 60 950 meets European Union EMC Immunity Requirements EN 50 082 1 1992 RF radiated IEC 801 3 meets Criterion A ESD meets Criterion B EFT IEC 801 4 meets Criterion B GENERAL INFORMATION Changes or modifications not expressly approved by Shure Inc could void your authority to operate this equipment This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules and as set out in the Radio Interference Regulations of the Cana dian Department of Communications These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency e
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