American Audio Mixer Q2422SX User Manual
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Q-2422/SX Professional Preamp Mixer USER INSTRUCTIONS American Audio 4295 Charter St. Los Angeles, CA 90058 (323) 582-2650 Fax (323) 582-2610 web: www.AmericanAudio.usRevised 2/03
©American Audio® - www.AmericanAudio.com - Q-2422/SX User Instructions page 2 1. Be sure to save the packing carton in case you ever have to return the unit for service. 2. Read all documentation before attempting to operate your new mixer. Please save all your documentation for future reference. 3. Do not spill water or other liquids in to or on to your mixer. 4. Be sure that the local power outlet matches that of the required voltage for your mixer. 5. Do not attempt to operate this unit if the power cord has been frayed or broken. Please route your power cord out of the way of foot traffic. 6. Always have the front gain controls set to their lowest level during initial power-up to prevent speaker damage. 7. Disconnect from main power before making any type of connection. 8. Do not remove the top cover under any conditions. There are no user serviceable parts inside. 9. Disconnect the unit’s main power when left unused for long periods of time. Important Precautions Introduction: Congratulations and thank you for purchasing the American Audio® Q-2422/SX™ mixer. This mixer is a representation of American Audio’s continuing com- mitment to producing the best and highest quality products at an affordable price. This mixer includes several innovative features that pack a big punch! The Q-2422/SX™ comes with a 2 year lim- ited warranty! Please read and understand this manual completely before attempting to operate your new mixer. This booklet contains important information concerning the proper and safe operation of your new mixer. Set-Up Precautions: Please make any connections before you plug the unit in. Be sure the Power switch is in the OFF posi- tion before connecting other devices to the mixer. All fader and volume controls should be set to 0 or mini- mum position, before the device is switched on. If the device has been exposed to drastic temperature fluctuation (e.g. after transportation), do not switch on the mixer immediately. The arising condensation of water might damage your device. Leave the device switched off until it has reached room temperature. Introduction Contents Introduction.........................................................................................................p.2 Electrical Safety Precautions..................................................................................p.3 Safety Precautions..................................................................................................p.4 Quick Start...............................................................................................................p.5 Functions (Front Panel)...........................................................................................p.7 Inputs & Outputs (Rear Panel)................................................................................p.11 Set-Up....................................................................................................................p.14 Replacing the Crossfader.......................................................................................p.17 Operating Determinations......................................................................................p.17 Technical Specifications.......................................................................................p.18 Warranty............................................................................................................p.19 INTRODUCTION
RISK OF ELECTRIC SHOCKDO NOT OPEN CAUTION The exclamation point within an equilateral triangle isintended to alert the user to the presence of importantoperating and maintenance (servicing) instructions inthe literature accompanying the appliance. The lightning flash with arrowhead symbol, within anequilateral triangle, is intended to alert the user to thepresence of uninsulated "dangerous voltage" within theproduct's enclosure that may be of sufficient magnitudeto constitute a risk of electric shock to persons. READ INSTRUCTIONS — All the safety and operatinginstructions should be read before the product isoperated.RETAIN INSTRUCTIONS — The safety and operatinginstructions should be retained for future reference.HEED WARNINGS — All warnings on the product andin the operating instructions should be adhered to.FOLLOW INSTRUCTIONS — All operating and useinstructions should be followed.CLEANING — The product should be cleaned only witha polishing cloth or a soft dry cloth. Never clean withfurniture wax, benzine, insecticides or other volatileliquids since they may corrode the cabinet.ATTACHMENTS — Do not use attachments notrecommended by the product manufacturer as theymay cause hazards.WATER AND MOISTURE — Do not use this productnear water — for example, near a bathtub, washbowl, kitchen sink, or laundry tub; in a wet basement;or near a swimming pool; and the like.ACCESSORIES — Do not place this product on anunstable cart, stand, tripod, bracket, or table. Theproduct may fall, causing serious injury to a child oradult, and serious damage to the product. Use onlywith a cart, stand, tripod, bracket, or tablerecommended by the manufacturer, or sold withthe product. Any mounting of the product shouldfollow the manufacturerʼs instructions, and shoulduse a mounting accessory recommended by themanufacturer.CART — A product and cart combination should bemoved with care. Quick stops, excessive force, anduneven surfaces may cause the product and cartcombination to overturn. VENTILATION — Slots and openings in the cabinet areprovided for ventilation and to ensure reliableoperation of the product and to protect it fromoverheating, and these openings must not beblocked or covered. The openings should never beblocked by placing the product on a bed, sofa, rug,or other similar surface. This product should not beplaced in a built-in installation such as a bookcase orrack unless proper ventilation is provided or themanufacturerʼs instructions have been adhered to.POWER SOURCES — This product should be operatedonly from the type of power source indicated on themarking label. If you are not sure of the type ofpower supply to your home, consult your productdealer or local power company.LOCATION – The appliance should be installed in astable location.NONUSE PERIODS – The power cord of the applianceshould be unplugged from the outlet when left un-used for a long period of time. GROUNDING OR POLARIZATION•If this product is equipped with a polarized alternatingcurrent line plug (a plug having one blade wider thanthe other), it will fit into the outlet only one way. Thisis a safety feature. If you are unable to insert the plugfully into the outlet, try reversing the plug. If the plugshould still fail to fit, contact your electrician toreplace your obsolete outlet. Do not defeat thesafety purpose of the polarized plug.•If this product is equipped with a three-wiregrounding type plug, a plug having a third (grounding)pin, it will only fit into a grounding type power outlet.This is a safety feature. If you are unable to insert theplug into the outlet, contact your electrician toreplace your obsolete outlet. Do not defeat thesafety purpose of the grounding type plug.POWER-CORD PROTECTION - Power-supply cordsshould be routed so that they are not likely to bewalked on or pinched by items placed upon oragainst them, paying particular attention to cords atplugs, convenience receptacles, and the point wherethey exit from the product.OUTDOOR ANTENNA GROUNDING — If an outsideantenna or cable system is connected to the product,be sure the antenna or cable system is grounded soas to provide some protection against voltage surgesand built-up static charges. Article 810 of the NationalElectrical Code, ANSI/NFPA 70, provides informationwith regard to proper grounding of the mast andsupporting structure, grounding of the lead-in wireto an antenna discharge unit, size of groundingconductors, location of antenna-discharge unit,c o n n e c t i o n t o g r o u n d i n g e l e c t r o d e s , a n drequirements for the grounding electrode. See FigureA.LIGHTNING — For added protection for this productduring a lightning storm, or when it is left unattendedand unused for long periods of time, unplug it fromthe wall outlet and disconnect the antenna or cablesystem. This will prevent damage to the productdue to lightning and power-line surges.POWER LINES — An outside antenna system shouldnot be located in the vicinity of overhead power linesor other electric light or power circuits, or where itcan fall into such power lines or circuits. Wheninstalling an outside antenna system, extreme careshould be taken to keep from touching such powerlines or circuits as contact with them might be fatal.OVERLOADING — Do not overload wall outlets,extension cords, or integral convenience receptaclesas this can result in a risk of fire or electric shock. OBJECT AND LIQUID ENTRY - Never push objects ofany kind into this product through openings as theymay touch dangerous voltage points or short-outparts that could result in a fire or electric shock.Never spill liquid of any kind on the product.SERVICING — Do not attempt to service this productyourself as opening or removing covers may exposeyou to dangerous voltage or other hazards. Refer allservicing to qualified service personnel.DAMAGE REQUIRING SERVICE - Unplug this productfrom the wall outlet and refer servicing to qualifiedservice personnel under the following conditions:• When the power-supply cord or plug is damaged.•If liquid has been spilled, or objects have fallen intothe product.•If the product has been exposed to rain or water.•If the product does not operate normally by followingthe operating instructions. Adjust only those controlsthat are covered by the operating instructions as animproper adjustment of other controls may result indamage and will often require extensive work by aqualified technician to restore the product to itsnormal operation.•If the product has been dropped or damaged in anyway.• When the product exhibits a distinct change inperformance — this indicates a need for service.REPLACEMENT PARTS -- When replacement partsare required, be sure the service technician has usedreplacement parts specified by the manufacturer orhave the same characteristics as the original part.Unauthorized substitutions may result in fire, electricshock, or other hazards.SAFETY CHECK - Upon completion of any service orrepairs to this product, ask the service technician toperform safety checks to determine that the productis in proper operating condition.WALL OR CEILING MOUNTING — The product shouldnot be mounted to a wall or ceiling.HEAT — The product should be situated away from heatsources such as radiators, heat registers, stoves, orother products (including amplifiers) that produceheat. IMPORTANT SAFETY INSTRUCTIONS ANTENNALEAD INWIRE GROUNDCLAMP ANTENNADISCHARGE UNIT(NEC SECTION 810-20) GROUNDING CONDUCTORS(NEC SECTION 810-21) GROUND CLAMPS POWER SERVICE GROUNDINGELECTRODE SYSTEM(NEC ART 250, PART H) ELECTRICSERVICEEQUIPMENT Fig. A NEC — NATIONAL ELECTRICAL CODE C A U T I O N : T O R E D U C E T H E R I S K O F E L E C T R I C SHOCK, DO NOT REMOVE THE COVER (OR BACK). T H E R E A R E N O U S E R S E R V I C E A B L E P A R T S INSIDE REFER SERVICE TO YOUR AUTHORIZED AMERICAN AUDIO® SERVICE TECHNICIAN. ELECTRICAL SAFETY PRECAUTIONS ©American Audio® - www.AmericanAudio.com - Q-2422/SX User Instructions page 3
NOTE: This product satisfies FCC regulations when shielded cables and connectors are used to connect the unit to other equipment. To prevent electromagnetic interference with electrical appliances such as radios and televi- sions, use shielded cables and connectors for connections. CAUTION: 1.Handle the power supply cord carefully. Do not damage or deform; it may cause electric shock or malfunction when used. Hold plug attachment when removing from wall outlet. Do not pull on the cord. 2.To avoid electric shock, do not open the top cover when the unit is plugged in. If problems occur with the unit, call your local American Audio® dealer. 3.Do not place metal objects or spill liquid inside the mixer. Electric shock or malfunction may occur. The serial and model number for this unit is located on the rear panel. Please write down the numbers here and retain for future refer- ence. Model No._____________________________ Serial No._____________________________ SAFETY PRECAUTIONS WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS UNIT TO WATER OR MOISTURE CAUTION: TO PREVENT ELECTRIC SHOCK DO NOT USE THIS (POLARIZED) PLUG WITH AN EXTENSION CORD, RECEPTACLE, OR OTHER OUTLET UNLESS THE BLADES CAN BE CAREFULLY INSERTED TO PREVENT BLADE EXPOSURE ATTENTION: POUR PREVENIR LES CHOCS ELECTRIQUES NE PAS UTILISER CETTE FICHE POLARISEE AVEC UN PROLON- GATEUR, UNE PRISE DE COURANT OU UNE AUTRE SORTIE DE COURANT, SAUF SI LES LAMES PEUVENT ETRE INSEREES A FOND SANS EN LAISSER AUCUNE PARTIE A DECOUVERT. LINE VOLTAGE SELECTION • The desired voltage may be set with the VOLTAGE SELECTOR switch on the rear panel (using a flat head screw driver). • Do not force the VOLTAGE SELECTOR switch as this may cause damage • If the VOLTAGE SELECTOR switch does not move smoothly, please contact a quali- fied service technician. ©American Audio® - www.AmericanAudio.com - Q-2422/SX User Instructions page 4 Voltage Selector Switch
Customer Support: American Audio® provides a toll free customer support line, to provide set up help and to answer any question should you encounter problems during your set up or initial operation. You may also visit us on the web at www.AmericanAudio.us for any comments or suggestions. For service related issue please contact American Audio®. Service Hours are Monday through Friday 9:00 a.m. to 5:00 p.m. Pacific Standard Time. Voice: (800) 322-6337 Fax: (323) 582-2610 E-mail: [email protected] Warning! To prevent or reduce the risk of electrical shock or fire, do not expose this unit to rain or moisture. Caution! There are no user serviceable parts inside this unit. Do not attempt any repairs yourself, doing so will void your manufactures warranty. In the unlikely event your unit may require service please contact customer support. Please do not return to your dealer without first contacting customer support. CUSTOMER SERVICE ©American Audio® - www.AmericanAudio.com - Q-2422/SX User Instructions page 5 American Audio would like to thank you for your purchase of this great product. For those of you that are to impatient to read the entire user manual we have compiled these quick start instructions. We hope that you will at least read through these instructions to familiarize yourself with the basic under- standing of the unit. The Q-2422/SX is part of American DJ’s continuing evolution in audio technol- ogy. This unit has been built and designed with the typical DJ in mind, by DJ’s. We have attempted to provide you with the most reliable product on the market by only using components made from quality products. MASTER LEVEL - Use this level control to set your volume output. Try never to send an output of more than +4dB to your system. A signal at levels higher than this will start to distort and may cause damage to your system and speakers. Remember that a distorted signal from your mixer will only be multiplied throughout your system. CHANNEL TRIM LEVEL - The channel trim levels are not to be used as volume controls, never use the channel trim to set the output volume. These controls are used to aid in distortion control. Use this control to preset your signal level before the crossfader. With your channel fades in the maximum position, use the channel trim level to set an average output level of about +4dB on you master level meter. HEADPHONES - To avoid sever hearing damage always be sure the headphone level is set to mini- mum before plugging them in. Never put the headphones on without making sure the headphone level is turned down. MAIN MIC - The main mic connector uses a Nuetrik combo plug which allows you to connect either a 1/4” unbalanced jack or by a standard 3-pin XLR balanced connector. The main mic also has an independent volume control with separate high and low level adjustments. If feedback occurs when using the mic, try lowering the “low” frequency level, this may reduce feedback. Always leave the mic level to it’s minimum level when not in use. PHONO/AUX/LINE SWITCH (5) - This switch is used to change the selected input from phono to line and vice versa. Channels 1 and 2 may be switched PHONO/AUX or LINE. Channel 3 may be switched LINE 3 or LINE 4. The selectors for AUX1/PHONO1 and AUX2/PHONO2 are on the rear panel (36). QUICK START
©American Audio® - www.AmericanAudio.com - Q-2422/SX User Instructions page 6 • Equipped with high quality Crossfader (Replaceable) • Optical Detecting Fader for Q-Start Control • High Power Headphone Output • Selectable Voltage 115v~230v • 3 Channel Mixer • 2 Phono, 4 Line, 2 Auxiliary Inputs • 2 Microphone Input - (1) XLR/ 1/4" combo plug, (1) 1/4" Input Jacks • Volume Control for each Mic • Master Balance Control • 12v BNC Light Connector for Gooseneck Light • Fader "Q" Start • On/Off Switch Controls Fader "Q" Start Function (for use with the American Audio CD Players with Fader "Q" Start) • -30dB Rotary Kills for Treble, Bass & Mids on all three channels • Individual Channel Gain Control • Convenient "L" Shape Design • Soft-touch rubber knobs for better control • Extremely clean signal to noise ratio • Light Control Signal Output Jack • Talkover switch- Reduces channel output gain by 15dB +/- 2 dB • Independent Zone Level Output • Stereo LED Level Indicator • Split Cue Monitoring • Cue Mixing • Balanced XLR Master Output • 4 Signal Output Options - Master (RCA and Balanced XLR), Zone (RCA) and REC (RCA) Main Features: Specifications subject to change without notice. The Q-2422/SX™ carries a two year (730 days) limited warranty. Please fill out the enclosed war- ranty card to validate your purchase. All returned service items whether under warranty or not, must be freight pre-paid and accompany a return authorization (R.A.) number. The R.A. number must be clearly written on the outside of the return package. A brief description of the problem as well as the R.A. number must also be written down on a piece of paper and included in the shipping container. If the unit is under warranty, you must provide a copy of your proof of purchase invoice. You may obtain a R.A. number by contacting customer support at (800) 322-6337. WARRANTY REGISTRATION FEATURES UNPACKING Every Q-2422/SX™ has been thoroughly tested and has been shipped in perfect operating condition. Carefully check the shipping carton for damage that may have occurred during shipping. If the carton appears to be damaged, carefully inspect your mixer for any damage and be sure all equipment neces- sary to operate the mixer has arrived intact. In the event damage has been found or parts are missing, please contact our toll free customer support number for further instructions. Please do not return the mixer to your dealer without first contacting customer support.
FRONT PANEL - CONTROLS AND FUNCTIONS
©American Audio® - www.AmericanAudio.com - Q-2422/SX User Instructions page 7
1. POWER SWITCH -
This is the main power ON/OFF button. A yellow LED below the power switch will glow when power is
ON. Before you turn the power on be sure you have made all connections to the mixer. Also be sure you
amplifiers are turned off. Remember mixer on first and turned off last.
2. MASTER LEVEL INDICATORS -
The dual MASTER LEVEL LED indicators along the top of unit is used to detail the master output
level. The meter will detail the output level of the left and right channels.
3. CHANNEL GAIN CONTROL -
This adjustment is used to adjust an audio source signal input gain for a channel. Never use the gain
control to adjust output volume. Setting the gain level properly will ensure a clean output signal. An
improper gain level adjustment will send a distorted signal throughout the entire audio line. To prop-
erly set the gain level control:
1. Be sure the MASTER VOLUME CONTROL (13) is set to minimum (zero output).
2. Set the CHANNEL FADER (6) to level 7.
3. Begin play on an audio source connected to the channel you are adjusting.
4. Turn the CUE (7) function on for the channel you are adjusting.
6. Use the GAIN CONTROL to adjust an average output volume of +4 dB in the LED
LEVEL INDICATOR (2).
4. CHANNEL EQ SECTION -
CHANNEL BASS EQUALIZER - Each of the three channels come with a BASS signal output
EQ. These controls are used to increase (up to +15dB) or decrease (down to -35dB) the LOW
range output signal. Turn the knob counter-clockwise to decrease a value or clockwise to
increase a value.
FRONT PANEL - CONTROLS AND FUNCTIONS CONT. CHANNEL MID RANGE EQUALIZER - Each of the three channels come with a MID signal output EQ. These controls are used to increase (up to +15dB) or decrease (down to -30dB) the MID range output signal. Turn the knob counter-clockwise to decrease a value or clockwise to increase a value. CHANNEL TREBLE FREQUENCY EQUALIZER - Each of the three channels come with a HIGH signal output EQ. These controls are used to increase (up to +15dB) or decrease (down to - 30dB) the HIGH frequency output signal. Turn the knob counter-clockwise to decrease a value or clockwise to increase a value. 5. SOURCE SELECTOR SWITCH - These are two-position switches. The switches are used to select the input source assigned to each channel. Each channel may only be assigned one input source at a time. 6. CHANNEL FADER - Each channel fader is used to control the output level of the channel's selected input source. 7. CUE BUTTONS - These buttons are used to activate a channels "CUE" mode. A red LED above the cue button will glow when cue mode is activated. Cue mode will send a channels incoming signal to the headphones. The cue level is adjusted by the CUE LEVEL ADJUSTMENT KNOB (12). Be sure the cue level is set to minimum before putting your headphones on. Be sure to slide the CUE MIXING SLIDER (11) to the cue position to hear the selected channel source. 8. FEATHER FADER PLUS™ CROSSFADER - The CROSSFADER blends the output signals of any channels assigned to "Left" or "Right." When the fader is in the full "Left" position, the output signal of any channels assigned to "Left" will be con- trolled by the MASTER VOLUME LEVEL (13). The same fundamentals will apply for "Right." Sliding the fader from one position to another will vary the output signals of the "Left" and "Right" channels respectively. When the crossfader is set in the center position, the output signals of both the "Left" and "Right" channels will be even. 9. “Q” START ON/OFF - This function works in conjunction with a compatible American Audio® "Q" series professional CD player. When used with a compatible "Q" series CD player, you can use the CROSSFADER (8) to start and stop the CD Player. The ON/OFF “Q” START switch activates this FADER “Q” START fea- ture. When in the ON position, the FADER “Q” START function allows the fader to return automatically to the CD players preset cue point by simply sliding the CROSSFADER (8) back and forth. For example, each time you slide the crossfader to the far left, the "Q" start function will trigger the play mode for any CD player connected to PLAYER CONTROL "A" (30). Play will begin at that unit's last set cue point. Turn the "Q" ON/OFF SWITCH to the OFF position to disengaged “Q” Start function and resume normal fader operation. 10. TALKOVER SWITCH - While in the ON position the microphone can be used at any time, while this will not attenuate any other channels. When the switch is in the TALKOVER position, the microphone is hot, meaning that when the microphone is in use all channels attenuate -15dB except the MIC. When the microphone is not being spoken into all channels return to normal . In the OFF position, all signals return to their ©American Audio® - www.AmericanAudio.com - Q-2422/SX User Instructions page 8
©American Audio® - www.AmericanAudio.com - Q-2422/SX User Instructions page 9 original level and the microphone is off. 11. CUE MIXING CONTROL - This functions allows you to monitor the Cue level as well as the Program (main output) level in your headphones. A channels Cue Level may only be monitored if the channels Cue function is selected. To select a channels cue function depress the CUE BUTTON (7) that is directly associated with the specific channel you wish to monitor. You may use the mixing function to blend both the Cue level and the Program level together. You can vary the output level to either hear more or less of either of the two levels. Sliding the Cue Mixing fader to the CUE position will allow you to hear more of the Cue level. Sliding the knob to the PGM position will allow you to hear more of the Program level (main output). You may also use the Cue Mixing Control to hear either the Cue level or the Program level exclusively. If the fader is in the full CUE position you will only hear the cue level, if the fader is in the full PGM position you will only hear the main output. This function will especially be useful for occasions when an external monitor is not available. 12. CUE LEVEL VOLUME CONTROL - This knob is used to control the headphone volume output level. 13. MASTER VOLUME CONTROL - This fader is used to control the master output level (main volume). To avoid distorted output try to maintain an average output signal level +4 dB. This fader will control the XLR-BALANCED (28) output jacks and MASTER VOLUME RCA (31) jacks. 14. HEADPHONES JACKS - This jack is used to connect your headphones to the mixer. Use head phones only rated at 8 ohms to 16 ohms. Most DJ headphones are rated at 16 ohm, these are highly recommended. Always be sure the CUE LEVEL VOLUME (12) is set to minimum before you put the headphones on. 15. MIC 1 INPUT JACK - Combination Microphone Plug. This jack will accept a standard 1/4" male plug or a XLR 3-pin bal- anced male plug. The volume output level will be controlled by the MIC 1 VOLUME CONTROL KNOB (18). 16. BNC JACK - This jack is used to supply a 12V DC signal to a gooseneck light, such as the American Audio® GNL- 14. 17. FADER ASSIGN SWITCH - This is a four position switch that assign a channel to the CROSSFADER (8). When a channel is assigned to the left side of the CROSSFADER (8) that channels output level will be controlled by the CROSSFADER (8). Sliding the CROSSFADER (8) to left position will send full volume output to the MASTER VOLUME LEVEL (13) and sliding the CROSSFADER (8) to right position will cut that chan- nels volume to MASTER VOLUME LEVEL (13). The reverse is true for the right channel fader assign switch. 18. MIC 1 and MIC 2 VOLUME CONTROL KNOBS - These knobs are used to adjust the microphone volume output level of MIC 1 (15) and MIC 2 (38) . FRONT PANEL - CONTROLS AND FUNCTIONS CONT.
©American Audio® - www.AmericanAudio.com - Q-2422/SX User Instructions page 10 19. MICROPHONE EQ SECTION - MIC BASS CONTROL - This knob is used to adjust the low frequency output of both MIC 1 (15) and MIC 2 (38). Turning the knob in clockwise direction will increase the low frequencies, turning the knob in a counter-clockwise direction will decrease the low frequencies. MIC MID CONTROL - This knob is used to adjust the mid range frequency output of both MIC 1 (15) and MIC 2 (38). Turning the knob in clockwise direction will increase the mid range frequencies, turning the knob in a counter-clockwise direction will decrease the mid range frequencies. MIC TREBLE CONTROL - This knob is used to adjust the high frequency output of both MIC 1 (15) and MIC 2 (38). Turning the knob in clockwise direction will increase the high range frequencies, turning the knob in a counter-clockwise direction will decrease the high range frequencies. 20. SPLIT CUE - This button will activate the "Split Cue" function. When used with a set of stereo head phones, the Split Cue function assign the Cue signal the left channel of the headphones and assigns the Program (main output) signal to the right channel of the headphones. Essentially splitting the cue signal in half. Please note that this function will only work with a set of stereo headphones. 21. MASTER LEVEL BALANCE CONTROL - This knob controls the balance level output of the MASTER VOLUME FADER (13). The knob has center lock position for precise center panning. Turning the knob to the "L" (counter-clockwise) posi- tion will increase the left channel output level. Turing the knob to "R" (clockwise) position will increase the right channel output level, while decreasing the left. To maintain a true stereo sound, level the balance control knob set to the 12 O'clock, or center position. 22. PAN CONTROL - The balance control for each channel, or how much left and right signal is sent to the left and right MASTER OUT JACKS (31). 23. ZONE LEVEL VOLUME OUTPUT CONTROL - This rotary knob is used to control the zone level volume. The zone level is not PFL, it is essentially a second master output volume with separate output volume control. 24. ZONE LEVEL EQ SECTION - TREBLE CONTROL -This knob is used adjust the high frequency output of the ZONE LEVEL VOLUME OUTPUT (23). Turning the knob in clockwise direction will increase the high frequency output, turning the knob in a counter-clockwise direction will decrease the high frequency output. BASS CONTROL - This knob is used adjust the low frequency output of the ZONE LEVEL VOLUME OUTPUT (23). Turning the knob in clockwise direction will increase the low frequency output, turning the knob in a counter-clockwise direction will decrease the low frequency output. FRONT PANEL - CONTROLS AND FUNCTIONS CONT.