Owner's Manual
Page 1
...PENDING • COPYRIGHT ©1999 SERIAL NUMBER MANUFACTURING DATE THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "FR SERIES", & THE "RUNNING MAN" FIGURE LIMITER OFF ON CONSTANT DIRECTIVITY HORN EQ /... 4.5k Hz OFF ON OFF 170 Hz 2k Hz 6k Hz AIR EQ TYPICAL AMP MODE STEREO MONO BRIDGE CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING: TO... EQUIPMENT TO RAIN OR MOISTURE. M•800 OWNER'S MANUAL AND WARRANTY REGISTRATION ™ HIGH-CURRENT POWER AMPLIFIER FULL SYMMETRY DUAL DIFFERENTIAL HIGH CURRENT DESIGN 00 00 CH GAIN/dB 1 3v 16 18 20...
...PENDING • COPYRIGHT ©1999 SERIAL NUMBER MANUFACTURING DATE THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "FR SERIES", & THE "RUNNING MAN" FIGURE LIMITER OFF ON CONSTANT DIRECTIVITY HORN EQ /... 4.5k Hz OFF ON OFF 170 Hz 2k Hz 6k Hz AIR EQ TYPICAL AMP MODE STEREO MONO BRIDGE CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING: TO... EQUIPMENT TO RAIN OR MOISTURE. M•800 OWNER'S MANUAL AND WARRANTY REGISTRATION ™ HIGH-CURRENT POWER AMPLIFIER FULL SYMMETRY DUAL DIFFERENTIAL HIGH CURRENT DESIGN 00 00 CH GAIN/dB 1 3v 16 18 20...
Owner's Manual
Page 3
...authorization, etc.): Purchased at high volume levels. It boasts a wealth of features you to extremely high noise levels may wonder why a power amp even needs an owner's manual. That's why our engineers have subjected the amplifier to the most rigorous and fiendish tests imaginable, to...ciently Duration Per Day Sound Level dBA, intense In Hours Slow Response noise for a 8 90 period of confidence for choosing a Mackie Designs power amplifier! mended that reliability is the attention to OSHA, any type of application. INTRODUCTION Thank you just plug in some hearing if...
...authorization, etc.): Purchased at high volume levels. It boasts a wealth of features you to extremely high noise levels may wonder why a power amp even needs an owner's manual. That's why our engineers have subjected the amplifier to the most rigorous and fiendish tests imaginable, to...ciently Duration Per Day Sound Level dBA, intense In Hours Slow Response noise for a 8 90 period of confidence for choosing a Mackie Designs power amplifier! mended that reliability is the attention to OSHA, any type of application. INTRODUCTION Thank you just plug in some hearing if...
Owner's Manual
Page 4
... mode (separate left and right inputs, separate left and right outputs) is the minimum per side for STEREO. Determine which AMP MODE is best for your mixer or preamplifier to power one or two inputs, two mono outputs) is off before making connections. 2. one or two inputs, one mono output)... 1& 2 NORM HOT GAIN/dB CH 3v 16 18 20 2 2v 14 22 12 24 6 26 28 1v SENSITIVITY 1.23v (+4dBu) PROFESSIONAL POWER AMPLIFIER ON OFF POWER 4 It needs plenty of the amp to the INPUT jacks, either XLR or TRS: • The balanced XLR inputs are wired pin 2 = hot (+) pin 3 = cold (-) pin 1...
... mode (separate left and right inputs, separate left and right outputs) is the minimum per side for STEREO. Determine which AMP MODE is best for your mixer or preamplifier to power one or two inputs, two mono outputs) is off before making connections. 2. one or two inputs, one mono output)... 1& 2 NORM HOT GAIN/dB CH 3v 16 18 20 2 2v 14 22 12 24 6 26 28 1v SENSITIVITY 1.23v (+4dBu) PROFESSIONAL POWER AMPLIFIER ON OFF POWER 4 It needs plenty of the amp to the INPUT jacks, either XLR or TRS: • The balanced XLR inputs are wired pin 2 = hot (+) pin 3 = cold (-) pin 1...
Owner's Manual
Page 5
...8226; MADE IN USA • PATENTS PENDING • COPYRIGHT ©1999 SERIAL NUMBER MANUFACTURING DATE THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "FR SERIES", & THE "RUNNING MAN" FIGURE LIMITER OFF ON CONSTANT DIRECTIVITY HORN EQ /AIR EQ OFF ON 4.5k Hz LOW CUT...EQUIPMENT TO RAIN OR MOISTURE. NO USER SERVICEABLE PARTS INSIDE. For quieter listening, it is on the amp or the source signal's level controls (e.g., master faders). 9. Plug the amp's power cord into the IEC receptacle and the other end into the black posts or the 1/4" speaker output ...
...8226; MADE IN USA • PATENTS PENDING • COPYRIGHT ©1999 SERIAL NUMBER MANUFACTURING DATE THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "FR SERIES", & THE "RUNNING MAN" FIGURE LIMITER OFF ON CONSTANT DIRECTIVITY HORN EQ /AIR EQ OFF ON 4.5k Hz LOW CUT...EQUIPMENT TO RAIN OR MOISTURE. NO USER SERVICEABLE PARTS INSIDE. For quieter listening, it is on the amp or the source signal's level controls (e.g., master faders). 9. Plug the amp's power cord into the IEC receptacle and the other end into the black posts or the 1/4" speaker output ...
Owner's Manual
Page 6
...-sound setups. Important and interesting points are noted using the M•800, including rack mounting, AC power, and wiring. LIMITED WARRANTY Read this and other Mackie products. CONTENTS QUICK START 4 APPLICATION DIAGRAMS 7 FEATURE DESCRIPTIONS 10 GAIN 10 METERS 11 CHANNEL STATUS 11... POWER 11 SPEAKER OUTPUTS 12 POWER CORD 12 INPUT 13 THRU 13 LOW CUT FILTER 14 CD FREQUENCY 15 CONSTANT DIRECTIVITY 15 AMP MODE 16 STEREO ...
...-sound setups. Important and interesting points are noted using the M•800, including rack mounting, AC power, and wiring. LIMITED WARRANTY Read this and other Mackie products. CONTENTS QUICK START 4 APPLICATION DIAGRAMS 7 FEATURE DESCRIPTIONS 10 GAIN 10 METERS 11 CHANNEL STATUS 11... POWER 11 SPEAKER OUTPUTS 12 POWER CORD 12 INPUT 13 THRU 13 LOW CUT FILTER 14 CD FREQUENCY 15 CONSTANT DIRECTIVITY 15 AMP MODE 16 STEREO ...
Owner's Manual
Page 10
... drive the amp. It does not apply to turntables, microphones, or instruments, as these need 2 volts from your mixer to putting in dB, though this case, first set at 3v, it 's rated power output (225 watts into 4 ohms). Or play. In this indicates the amplifier's voltage gain, 6 26... you are in a small room where loud volume is obtained. • If you work because the CH 2 control is equivalent to reach full power. Note: The calibration marks only apply to the amplifier. This is possible to connect a source component directly to stereo or mono operation using your ...
... drive the amp. It does not apply to turntables, microphones, or instruments, as these need 2 volts from your mixer to putting in dB, though this case, first set at 3v, it 's rated power output (225 watts into 4 ohms). Or play. In this indicates the amplifier's voltage gain, 6 26... you are in a small room where loud volume is obtained. • If you work because the CH 2 control is equivalent to reach full power. Note: The calibration marks only apply to the amplifier. This is possible to connect a source component directly to stereo or mono operation using your ...
Owner's Manual
Page 11
.... OL OL If this occurs, the NORM LED lights, and the amplifier speaker outputs become active again. The amp needs plenty of the POWER switch. When you should still follow these precautions: • When powering up to distort, and the audio signals -6 -6 may "clip". -9 -9 Ideally, the -20, -9, -20 -20...amplifier fan draws air from being transmitted to 60°C. The heaviest load the M•800 can trigger the protection circuits. POWER To make the amp operate, push the top half of fresh air to cool the output transistors. It'll click again and the green light ...
.... OL OL If this occurs, the NORM LED lights, and the amplifier speaker outputs become active again. The amp needs plenty of the POWER switch. When you should still follow these precautions: • When powering up to distort, and the audio signals -6 -6 may "clip". -9 -9 Ideally, the -20, -9, -20 -20...amplifier fan draws air from being transmitted to 60°C. The heaviest load the M•800 can trigger the protection circuits. POWER To make the amp operate, push the top half of fresh air to cool the output transistors. It'll click again and the green light ...
Owner's Manual
Page 12
...speaker connects across the red posts only (see page 16 for the voltage rating of continuously delivering 12 amps (US model). DO NOT REMOVE COVER. The amplifier is hooked up "out of power amplifiers. don't mess with some big-time electricity here - MONO BRIDGE CH 2 + - And...; MADE IN USA • PATENTS PENDING • COPYRIGHT ©1999 SERIAL NUMBER MANUFACTURING DATE THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "FR SERIES", & THE "RUNNING MAN" FIGURE LIMITER OFF ON CONSTANT DIRECTIVITY HORN EQ /AIR EQ OFF ON 4.5k Hz LOW...
...speaker connects across the red posts only (see page 16 for the voltage rating of continuously delivering 12 amps (US model). DO NOT REMOVE COVER. The amplifier is hooked up "out of power amplifiers. don't mess with some big-time electricity here - MONO BRIDGE CH 2 + - And...; MADE IN USA • PATENTS PENDING • COPYRIGHT ©1999 SERIAL NUMBER MANUFACTURING DATE THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "FR SERIES", & THE "RUNNING MAN" FIGURE LIMITER OFF ON CONSTANT DIRECTIVITY HORN EQ /AIR EQ OFF ON 4.5k Hz LOW...
Owner's Manual
Page 13
...presents a load of 1000 ohms to the shield, preferably at the source end. In this way, multiple amplifiers can be plugged into the amp's INPUTs. Sonically (and electrically) they're identical, so choose either balanced or unbalanced signals. Although 1/4" jacks and plugs are convenient and ...1/4" TRS (Tip-Ring-Sleeve) input jacks. If you're using low impedance loads at high power levels, we recommend that the amplifier is off before making any line-level mixer or other amps in parallel, don't use , they 're wired thusly, per AES (Audio Engineering Society) standards...
...presents a load of 1000 ohms to the shield, preferably at the source end. In this way, multiple amplifiers can be plugged into the amp's INPUTs. Sonically (and electrically) they're identical, so choose either balanced or unbalanced signals. Although 1/4" jacks and plugs are convenient and ...1/4" TRS (Tip-Ring-Sleeve) input jacks. If you're using low impedance loads at high power levels, we recommend that the amplifier is off before making any line-level mixer or other amps in parallel, don't use , they 're wired thusly, per AES (Audio Engineering Society) standards...
Owner's Manual
Page 14
...the house). • Fully clockwise is labeled 170Hz. besides, it 's a waste of amplifier power that . • 3/4 of your woofer moving sporadically without audible signal. Your system will ...the TRS 1/4" INPUT jacks on the second amplifier using a balanced input to the first amp, do this correctly (and make sure the meters are clearly marked along the knob's ...; COPYRIGHT ©1999 SERIAL NUMBER MANUFACTURING DATE THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "FR SERIES", & THE "RUNNING MAN" FIGURE LIMITER OFF ON CONSTANT DIRECTIVITY HORN...
...the house). • Fully clockwise is labeled 170Hz. besides, it 's a waste of amplifier power that . • 3/4 of your woofer moving sporadically without audible signal. Your system will ...the TRS 1/4" INPUT jacks on the second amplifier using a balanced input to the first amp, do this correctly (and make sure the meters are clearly marked along the knob's ...; COPYRIGHT ©1999 SERIAL NUMBER MANUFACTURING DATE THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "FR SERIES", & THE "RUNNING MAN" FIGURE LIMITER OFF ON CONSTANT DIRECTIVITY HORN...
Owner's Manual
Page 16
... • MADE IN USA • PATENTS PENDING • COPYRIGHT ©1999 SERIAL NUMBER MANUFACTURING DATE THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "FR SERIES", & THE "RUNNING MAN" FIGURE LIMITER OFF ON CONSTANT DIRECTIVITY HORN EQ /AIR EQ OFF ON 4.5k Hz LOW CUT ... is connected in BRIDGE mode: 1. MONO This mode (also known as for normal stereo use. Some examples of using 4 ohm speakers. To use one amp to power a mono system, such a center speaker or PA. • Multiple M•800s can be used to the CH 1 red (+) binding post. 4....
... • MADE IN USA • PATENTS PENDING • COPYRIGHT ©1999 SERIAL NUMBER MANUFACTURING DATE THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "FR SERIES", & THE "RUNNING MAN" FIGURE LIMITER OFF ON CONSTANT DIRECTIVITY HORN EQ /AIR EQ OFF ON 4.5k Hz LOW CUT ... is connected in BRIDGE mode: 1. MONO This mode (also known as for normal stereo use. Some examples of using 4 ohm speakers. To use one amp to power a mono system, such a center speaker or PA. • Multiple M•800s can be used to the CH 1 red (+) binding post. 4....
Owner's Manual
Page 18
... be a space of an amplifier varies depending on at the bottom and the lighter items toward the top. The extension cord used to supply power to the "amp rack" should be used because the amplifier places high current demands on transients. Be sure the AC outlet can be available for your rack...
... be a space of an amplifier varies depending on at the bottom and the lighter items toward the top. The extension cord used to supply power to the "amp rack" should be used because the amplifier places high current demands on transients. Be sure the AC outlet can be available for your rack...
Owner's Manual
Page 20
... (or whatever device immediately precedes the amplifier) is with your speakers or speaker cabling. Of all Mackie products returned for warm air to exit. If not, try turning it on the next page to the power switch illuminated? Refer to "Repair" on . • Is the green light next to find something like... out how to hear. • Your bass player may need more lessons. 20 Check 'em to BRIDGE . • Turn the POWER off, check the speaker connections and make sure the AMP MODE switch is room at the front of the amplifier. One side is cool air available at the sides of -balance...
... (or whatever device immediately precedes the amplifier) is with your speakers or speaker cabling. Of all Mackie products returned for warm air to exit. If not, try turning it on the next page to the power switch illuminated? Refer to "Repair" on . • Is the green light next to find something like... out how to hear. • Your bass player may need more lessons. 20 Check 'em to BRIDGE . • Turn the POWER off, check the speaker connections and make sure the AMP MODE switch is room at the front of the amplifier. One side is cool air available at the sides of -balance...
Owner's Manual
Page 21
... WA 98072 8. We'll try to non-factory packaging. 5. Be sure that OL is very important. Turn the amp off and rectify that there are not routed near AC cables, power transformers, or other EMI-inducing device. • Is there a light dimmer or other SCR-based device on page ...your speaker setup, or the total impedance of wire shorting across the speaker terminals. • If possible, listen to us . REPAIR Service for Mackie amplifiers living outside the United States can duplicate it loud and distorted? If it sounds bad there, the problem's not in sunny Woodinville, Washington....
... WA 98072 8. We'll try to non-factory packaging. 5. Be sure that OL is very important. Turn the amp off and rectify that there are not routed near AC cables, power transformers, or other EMI-inducing device. • Is there a light dimmer or other SCR-based device on page ...your speaker setup, or the total impedance of wire shorting across the speaker terminals. • If possible, listen to us . REPAIR Service for Mackie amplifiers living outside the United States can duplicate it loud and distorted? If it sounds bad there, the problem's not in sunny Woodinville, Washington....
Owner's Manual
Page 22
...Z3 are not normally used in a parallel configuration, the others will go below these same levels. SERIES "Series" means that the positive amp output connects to the first speaker's positive terminal, the first speaker's negative terminal connects to the second speaker's positive terminal, the second ... that the average impedance is greater than or equal to 2 ohms. In BRIDGE mode, make sure that your speaker is easy - The other , more power can 't do . This will equal 8 ohms (4 + 4 = 8). Series connections are the impedances of series and parallel links to arrive at 120Hz....
...Z3 are not normally used in a parallel configuration, the others will go below these same levels. SERIES "Series" means that the positive amp output connects to the first speaker's positive terminal, the first speaker's negative terminal connects to the second speaker's positive terminal, the second ... that the average impedance is greater than or equal to 2 ohms. In BRIDGE mode, make sure that your speaker is easy - The other , more power can 't do . This will equal 8 ohms (4 + 4 = 8). Series connections are the impedances of series and parallel links to arrive at 120Hz....
Owner's Manual
Page 25
... LINE INPUT (TRS) FREQ FREQ LOW CUT FILTER CD EQ ON OFF FREQ FREQ LOW CUT FILTER CD EQ ON OFF POWER FUSE SWITCH TOROIDAL POWER TRANSFORMER LAMP STEREO MONO BRIDGE CH 1 GAIN INVERTING UNITY GAIN AMPLIFIER +74VDC LIMITER +64VDC DETECTION LIMITER OFF ON LIMITER SWITCH... AMP MUTE DC OFFSET PROTECT -64VDC -74VDC STEREO MONO BRIDGE STEREO MONO BRIDGE TEMP SENSOR (ON HEATSINK) + 64 VDC - OL -3 METER -6 DRIVE -9...
... LINE INPUT (TRS) FREQ FREQ LOW CUT FILTER CD EQ ON OFF FREQ FREQ LOW CUT FILTER CD EQ ON OFF POWER FUSE SWITCH TOROIDAL POWER TRANSFORMER LAMP STEREO MONO BRIDGE CH 1 GAIN INVERTING UNITY GAIN AMPLIFIER +74VDC LIMITER +64VDC DETECTION LIMITER OFF ON LIMITER SWITCH... AMP MUTE DC OFFSET PROTECT -64VDC -74VDC STEREO MONO BRIDGE STEREO MONO BRIDGE TEMP SENSOR (ON HEATSINK) + 64 VDC - OL -3 METER -6 DRIVE -9...
Owner's Manual
Page 26
...choose the optimum crossover frequency and crossover slope for the individual drivers in the system. FR SERIES POWER AMPLIFIER (STEREO MODE) FROM SIGNAL SOURCE CH 1 (MACKIE MIXING CONSOLE) IN FROM SIGNAL SOURCE CH 2 (MACKIE MIXING CONSOLE) IN CH 1 + OUT - CH 2 - Likewise, compression drivers are good...way, three-way, and even four-way speaker systems were developed - APPENDIX C: Bi-amping and Tri-amping Most speaker systems in the crossover, reducing the amount of amplifier power available to reproduce only the frequencies that the amplifier sees, which are some drawbacks to the...
...choose the optimum crossover frequency and crossover slope for the individual drivers in the system. FR SERIES POWER AMPLIFIER (STEREO MODE) FROM SIGNAL SOURCE CH 1 (MACKIE MIXING CONSOLE) IN FROM SIGNAL SOURCE CH 2 (MACKIE MIXING CONSOLE) IN CH 1 + OUT - CH 2 - Likewise, compression drivers are good...way, three-way, and even four-way speaker systems were developed - APPENDIX C: Bi-amping and Tri-amping Most speaker systems in the crossover, reducing the amount of amplifier power available to reproduce only the frequencies that the amplifier sees, which are some drawbacks to the...
Spec Sheet
Page 1
...and output device reliability. The M•800 is rated at 450 watts into 8Ω and 560 watts into 2Ω. An amp mode switch selects stereo, mono, or bridge operation. To effectively deal with a range from Off to help control clipping distortion... M•800 employs a very sparse amount of negative feedback. AMPLIFIER M•800 M•800 High-Current Power Amplifier The Mackie M•800 is a dual channel, high output power amplifier that incorporates a number of unique features including FR "Fast Recovery" design, high continuous current output, ...
...and output device reliability. The M•800 is rated at 450 watts into 8Ω and 560 watts into 2Ω. An amp mode switch selects stereo, mono, or bridge operation. To effectively deal with a range from Off to help control clipping distortion... M•800 employs a very sparse amount of negative feedback. AMPLIFIER M•800 M•800 High-Current Power Amplifier The Mackie M•800 is a dual channel, high output power amplifier that incorporates a number of unique features including FR "Fast Recovery" design, high continuous current output, ...
Spec Sheet
Page 4
... THRU (XLR-M) CH 2 BALANCED LINE INPUT (TRS) MACKIE DESIGNS M•800 BLOCK DIAGRAM 26 FEB 1999 FREQ FREQ LOW CUT FILTER CD EQ ON OFF FREQ FREQ LOW CUT FILTER CD EQ ON OFF FUSE POWER SWITCH TOROIDAL POWER TRANSFORMER LAMP MUTE THERMAL PROTECT STEREO MONO BRIDGE CH 1 ... -60VDC MUTE +60VDC MUTE DC OFFSET DETECT POWER AMPLIFIER -60VDC OL -3 METER -6 DRIVE -9 -20 CH 1 SPEAKER OUT OL -3 METER -6 DRIVE -9 -20 CH 2 SPEAKER OUT 60ºC DETECTOR AND CH 1 AMP OUT CH 2 AMP OUT PROGRAM DETECT FAN SPEED CONTROL FAN OR HI DCV TEMP SENSOR (ON HEATSINK) HOT...
... THRU (XLR-M) CH 2 BALANCED LINE INPUT (TRS) MACKIE DESIGNS M•800 BLOCK DIAGRAM 26 FEB 1999 FREQ FREQ LOW CUT FILTER CD EQ ON OFF FREQ FREQ LOW CUT FILTER CD EQ ON OFF FUSE POWER SWITCH TOROIDAL POWER TRANSFORMER LAMP MUTE THERMAL PROTECT STEREO MONO BRIDGE CH 1 ... -60VDC MUTE +60VDC MUTE DC OFFSET DETECT POWER AMPLIFIER -60VDC OL -3 METER -6 DRIVE -9 -20 CH 1 SPEAKER OUT OL -3 METER -6 DRIVE -9 -20 CH 2 SPEAKER OUT 60ºC DETECTOR AND CH 1 AMP OUT CH 2 AMP OUT PROGRAM DETECT FAN SPEED CONTROL FAN OR HI DCV TEMP SENSOR (ON HEATSINK) HOT...
Spec Sheet
Page 5
...NORM HOT GAIN/dB CH 3v 16 18 20 2 2v 14 22 12 24 6 26 28 1v SENSITIVITY 1.23v (+4dBu) PROFESSIONAL POWER AMPLIFIER ON OFF POWER U.S. SPEAKER OUTPUTS BAL/UNBAL THRU LOW CUT FILTER TYPICAL 35 Hz CONSTANT DIRECTIVITY HORN EQ /AIR EQ 4.5k Hz OFF ON CAUTION ...• PATENTS PENDING • COPYRIGHT ©1999 SERIAL NUMBER MANUFACTURING DATE THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "FR SERIES", & THE "RUNNING MAN" FIGURE AMP MODE LIMITER STEREO MONO BRIDGE OFF ON CONSTANT DIRECTIVITY HORN EQ /AIR EQ OFF ON 4.5k Hz LOW CUT ...
...NORM HOT GAIN/dB CH 3v 16 18 20 2 2v 14 22 12 24 6 26 28 1v SENSITIVITY 1.23v (+4dBu) PROFESSIONAL POWER AMPLIFIER ON OFF POWER U.S. SPEAKER OUTPUTS BAL/UNBAL THRU LOW CUT FILTER TYPICAL 35 Hz CONSTANT DIRECTIVITY HORN EQ /AIR EQ 4.5k Hz OFF ON CAUTION ...• PATENTS PENDING • COPYRIGHT ©1999 SERIAL NUMBER MANUFACTURING DATE THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "FR SERIES", & THE "RUNNING MAN" FIGURE AMP MODE LIMITER STEREO MONO BRIDGE OFF ON CONSTANT DIRECTIVITY HORN EQ /AIR EQ OFF ON 4.5k Hz LOW CUT ...