American Audio Amplifier V 1000 Plus User Manual
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User Instructions AMERICAN AUDIO® 4295 Charter Street Los Angeles Ca. 90058Revised 12/03 Professional Power Amplifiers �� � �� � � � � � � � � � � � �� � � � �� � � � � �� � � � � � � � � � � � � � � � � � � � � � � � � ����������������������������� � � � � � � �� � � � � �� � �� � � � � � � � � � � � �� � � � �� � � � � �� � � � � � � � � � � � � � � � � � � � � � � � � ����������������������������� � � � � � � �� � � � � �� � �� � � � � � � � �� � � � � �� � � � � � � � � � � � � � � � � � � � � � � � � ������������������������������ � �
This symbol is intended to alert the user to the presence of non insulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. This symbol is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product. CAUTION: Risk of the electrical shock - DO NOT OPEN! CAUTION: To reduce the risk of electrical shock, do not remove cover. No user serviceable parts inside. Refer all servicing to qualified service personnel. WARNING: To prevent electrical shock or fire hazard, do not expose this amplifier to rain or moisture. Before using this amplifier, read the user manual for further warnings. Ce symbole est utilisé pur indiquer à l’utilisateur la présence à l'intérieur de ce produit de tension non-isolée dangereuse pouvant être d'intensité suffisante pour constituer un risque de choc électrique. Ce symbole est utilisé pour indiquer à l’utilisateur qu'il trouvera d'importantes instructions importantes sur l'utilisation et l'entretien de l'appareil dans la littérature accompagnant le produit. ATTENTION: Risque de choc électrique - NE PAS OUVRIR! ATTENTION: Afin de réduire le risque de choc électrique, ne pas enlever le couvercle. Il ne se trouve à l’intérieur aucune piéce pouvant être réparée par l'utilisateur. Confier l'entretien à un personnel qualifié. AVERTISSEMENT: Afin de prévenir les risque de décharge ou de feu, n’exposez pas cet appareil à la pluie ou à l’humidité. Avant d’utiliser cet amplificateur, lisez les aver- tissements supplémentaries situés dans le guide. Este símbolo tiene el propósito de alertar al usuario de la presencia de “voltaje peligroso“ que no tiene aislamiento dentro de la caja del producto que puede tener una magnitud suficiente como para constituir riesgo de corrientazo. Este símbolo tiene el propósito de alertar al usuario de la presencia de instrucciones importantes sobre la operación y mantenimiento en la literatura que vienc con el producto. PRECAUCIÓN: Riesgo del choque eléctrico - NO SE ABRA PRECAUCIÓN: Para disminuir el riesgo de choque eléctrico, no quite la cubierta. No hay piezas adentr o que el usario puede reparar. Deje todo mantenimiento al los téc- nicos cualificados. ADVERTENCIA: Para prevenir choque eléctrico o riesgo de incendios, no deja expuesto a la lluvia o a la humedad este amplificador. Antes de usar este amplificador, lea mas advertencias en la guia de operacion. Dieses Symobl soll den Anwender vor unisollierten gefährlichen Spannungen innerhalb des Gehäuses warnen, die von Ausreichender Stärke sind, um einen elek- trischen Schlag verursachen zu können. Dieses Symobl soll den Benutzer auf wichtige Instruktionen in der Bedienungsanleitung aufmerksam machen, die Handhabung und W artung des Produkts betref- fen. VORSICHT: Risiko - Elektrischer Schlag! Nicht öffnen! VORSICHT: Um ddas Risiko eines elektrischen Schlages zu vermeiden, nicht die Abdeckung enfernen. Es befinden sich keine Teile darin, die vom Anwender repariert werden könnten. Reparaturen nur von qualifizierte Fachpersonal durchführen lassen. ACHTUNG: Um einen elektrischen Schlag oder Feuergefahr zu vermeiden, sollte diesen Gerät nicht dem Regen oder Feuchtigkeit ausgesetz werden. Vor Inbetriebnahme unbedingt die Bedienungsanleitung lesen. American Audio® - www.americandj.com - Vplus Series Amplifiers Power Amplifier User Manual Page 2
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER. THERE ARE NO USER SERVICEABLE PARTS INSIDE. REFER ALL SERVICE TO YOUR AUTHORIZED AMERICAN AUDIO® DEALER. CAUTION Do not open - risk of electric shock FOR OPTIMUM PERFORMANCE AND RELIABILITY DO NOT PRESENT THE AMPLIFIER WITH A SPEAKER LOAD OF LESS THAN 2 OHMS OR ANY COMBINATION OF SPEAKERS THAT TOGETHER ARE LESS THAN 2 OHMS! USING ONE SPEAKER, IT MUST BE RATED AT 4 OR MORE OHMS. USING TWO SPEAKERS, THEY MUST RATED EACH AT 4 OR MORE OHMS. USING THREE SPEAKERS, THEY MUST BE RATED EACH AT 8 OR MORE OHMS. The lightning flash with an arrow triangular symbol is intended to alert the user to the presence of non insulated “dangerous volt- age” within the products enclosure, and may be of sufficient magnitude to consti- tute a risk of electric shock. The exclamation point triangular symbol is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the user manual accompanying the amplifier. POUR ASSURER L A FIABILE TE E T OBTENIT UNE PERFORMANCE OPTIMALE, NESOUME T TE JAMAIS L’AMPLIFICATEUR A UNE CHARGE D’IMPEDANCE TOTALE INFERIEURE A 2 OHMS, NI AVEC UN H.P. NI EN COMBINAISON DES H.P. AVEC UN H.P., IL FAUT UNE CHARGE D’IMPEDANCE MINIMUM DE 2 OHMS. AVEC DEUX H.P., FAUT POUR CHAOUN UNE CHARGE D’IMPEDANCE MINIMUM DE 4 OHMS. AVEC TROIS H.P., FAUT POUR CHAOUN UNE CHURGE D’IMPEDANCE MINIMUM DE 8 OHMS. CONTENTS: Introduction...............................................................................................................................................................................................4 Front Panel....................................................................................................................................................................................................5 Rear Panels V1000plus................................................................................................................................................................................................6 V2000plus...............................................................................................................................................................................................7 V3000plus..............................................................................................................................................................................................8 Inputs...........................................................................................................................................................................................................9 Outputs............................................................................................................................................................................................................9 Operating Modes........................................................................................................................................................................................13 Protection Circuitry Limiter................................................................................................................................................................................................13 Short Circuit Protection....................................................................................................................................................................13 Thermal Protection...........................................................................................................................................................................14 Low Cut Filter....................................................................................................................................................................................14 Specifications...............................................................................................................................................................................................15 American Audio® - www.americandj.com - Vplus Series Amplifiers Power Amplifier User Manual Page 3
Important Precautions
• To reduce the risk of electrical shock or fire, do not expose this
unit rain or moisture
• Do not spill water or other liquids into or on to your unit
• Do not attempt to operate this unit if the power cord has been
frayed or broken
• Do not attempt to remove or break off the ground prong from the
electrical cord. This prong is used to reduce the risk of electrical
shock and fire in case of an internal short
• Disconnect main power before making any type of connection
• Do not remove the cover under any conditions. There are no user
serviceable parts inside
• Never plug this unit in to a dimmer pack
• Always be sure to mount this unit in an area that will allow proper
ventilation. Allow about 6” (15cm) between this device and a wall
• Do not attempt to operate this unit, if it becomes damaged
• This unit is intended for indoor use only, use of this product out-
doors voids all warranties
• During long periods of non-use, disconnect the unit’s main power
• Always mount this unit in a safe and stable manner
• Power cords should be routed so they are not likely to be walked
on, pinched by items placed upon or against them.
• Cleaning -The outside of the unit should be wipe down with a soft
cloth and mild cleaner when needed.
• Heat -The amplifier should be situated away from heat sources
such as radiators, heat registers, stoves, or other appliances
(including amplifiers) that produce heat.
• The fixture should be serviced by qualified service personnel when:
A. The power-supply cord or the plug has been damaged.
B. Objects have fallen, or liquid has been spilled into the unit.
C. The appliance has been exposed to rain or water.
D. The fixture does not appear to operate normally or exhibits a
marked change in performance.
Introduction
Introduction: Congratulations and thank you for purchasing an
American Audio® Vplus series amplifier. This amplifier is a represen-
tation of American Audio’s continuing commitment to produce the
best and highest quality audio products at an affordable price. These
amplifiers are designed to provide a big impact in sound reproduc-
tion. Please read and understand this manual completely before
attempting to operate your new amplifier. This booklet contains
important information concerning the proper and safe operation of
your new amplifier.
Unpacking: Every Vplus series amplifier has been thoroughly tested
and has been shipped in perfect operating condition. Carefully check
the shipping carton for damage that may have occurred during ship-
ping. If the carton appears to be damaged, carefully inspect your unit
for any damage and be sure all accessories necessary to operate
the system have 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 amplifier to
your dealer without contacting customer support.
Installation: This amplifier is designed to mount into a standard 19”
rack. The front panel provides four holes used to screw the unit into
a rack. The unit also provides a way to rear mount the unit into a
rack for added security. Rear mounting the unit is especially recom-
mended if the unit is to mounted into a mobile rack.
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 opera-
tion. You may also visit us on the web at www.americandj.com for
any comments or suggestions. For service related issue please con-
tact 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]
American Audio® - www.americandj.com - Vplus Series Amplifiers Power Amplifier User Manual Page 4
FRONT PANEL 1. Power Switch - This switch controls the units main power. 2. Channel 1 Limiter Switch (V2000 & V3000 Only) - This is used to activate the channels built-in limiter. The limiter reduces the average output level when the signal begins to distort, this process is designed to reduce distortion and protect the speakers. See limiter page 12. 3. Channel 1 Clip Indicator - This red LED will begin to flash when channel one begins to overload (clip). At this point channel one will be- gin to distort. Under heavy clipping activity lower the channel one gain control to reduce the risk of damage to your speakers and amplifier. This LED may glow when the unit has been turned off, this is normal. 4. Channel 1 Protect Indicator - The red Protect LED will begin to glow when the channel goes into protect mode. When the channel goes into protect mode all output for that channel will turn off. This is to pro- tect any speakers connected to the channel. 5. Power Indicator - This blue LED will glow when main power is ap- plied to the unit. This light may continue to glow briefly after main power has been turned off, this is normal. 6. Channel 2 Protect Indicator - The red Protect LED will begin to glow when the channel goes into protect mode. When the channel goes into protect mode all output for that channel will turn off. This is to pro- tect any speakers connected to the channel. 7. Channel 2 Clip Indicator - This red LED will begin to flash when channel two begins to overload (clip). At this point channel one will be- gin to distort. Under heavy clipping activity lower the channel one gain control to reduce the risk of damage to your speakers and amplifier. This LED may glow when the unit has been turned off, this is normal. 8. Channel 2 Limiter Switch (V2000 & V3000 Only) - This is used to activate the channels built-in limiter. The limiter reduces the average output level when the signal begins to distort, this process is designed to reduce distortion and protect the speakers. See limiter page 12. 9. Cooling Vents - These vents are used for proper cooling. Never block these vents and keep them clean at all times. 10. Channel 1 Gain Control - This rotary knob is used to control the output signal of channel one. Turning the knob in a clockwise direction will increase signal output. 11. Channel 1 Signal Indicators - These green and yellow LED’s will glow according to the average signal output. 12. Channel 2 Signal Indicators - These green and yellow LED’s will glow according to the average signal output. 13. Channel 2 Gain Control - This rotary knob is used to control the output signal of channel two. Turning the knob in a clockwise direction will increase signal output. Diagram 1 CONTROLS AND FUNCTIONS �� � �� � � � � � � � � � � � �� � � � �� � � � � �� � � � � � � � � � � � � � � � � � � � � � � � � ����������������������������� � � � � � � �� � � � � �� � �� � � � � � � � � � � � �� � � � �� � � � � �� � � � � � � � � � � � � � � � � � � � � � � � � ����������������������������� � � � � � � �� � � � � �� � �� � � � � � � � �� � � � � �� � � � � � � � � � � � � � � � � � � � � � � � � ������������������������������ � � 10 273 9 14568 9131211 American Audio® - www.americandj.com - Vplus Series Amplifiers Power Amplifier User Manual Page 5
V1000plus REAR PANEL 1. Channel 2 Input - Connect the input source for channel two to either the balance XLR or the balanced/unbalanced 1/4” input jacks. The 1/4” TRS plug is configured as follows; Tip is positive, Ring is negative and Sleeve is ground. The XLR jack is configured as follows; Pin three positive, pin two negative, pin one ground. See page 9 for more details on input configuration. 2. Channel 1 Input - Connect the input source for channel one to either the balance XLR or the balanced/unbalanced 1/4” input jacks. The 1/4” TRS plug is configured as follows; Tip is positive, Ring is negative and Sleeve is ground. The XLR jack is configured as follows; Pin three positive, pin two negative, pin one ground. See page 9 for more details on input configuration. 3. Cooling Fan - This is a dual speed cooling fan. This fan is used to cool the internal parts of the amplifier when in use. Never block the fan in any way or mount in an enclose rack, doing so may cause the amplifier to overheat and fail. 4. Channel 2 Speaker Output - 5 Way Binding Post - Connect your channel two speakers to channel two output. 5. Channel 1 Speaker Output - 5 Way Binding Post - Connect your channel one speakers to channel one output. 6. Circuit Breaker - This breaker is designed to protect the amplifier and your speak- ers in the event of an AC overload. In the event of an electrical overload the breaker will pop-out. To reset the breaker, push it in. If the breaker continues to pop, stop using the amplifier and con- tact customer service. 7. Mono-Bridge/Stereo Selectable Switch - This switch changes the amplifier operating mode from either stereo or mono bridge. Amplifiers arrive to you preset in the ste- reo operation mode. 8. A/C Power Input - Plug this cable in to a standard 110~120v wall outlet. Be sure that supplied voltage matches that of the required voltage of you amplifier. Never plug your amplifier in to a wall outlet that does not match the required voltage of your amplifier, serious damage may occur to your unit. Diagram 2 1000 WATTS BRIDGE MONO 120V~60Hz 6AMP CAUTION4 OHMS MINIMUM IMPEDANCE PRE CHANNEL 4 OHMS MINIMUM IMPEDANCE IN MONO BRIDGE MODE OUTPUT INPUTCH 1 WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE THIS EQUIPMENT T O RAIN OF MOIS- TURE A VIS: RISQUE DE CHOC ELECT- TRIQUE - NE P AS OUVRIR. P2P3 P1+ - + -+ -+ CH 1 CH 2 PROFESSIONAL POWER AMPLIFIER STEREO BRIDGE INPUTCH 2 654321 78 American Audio® - www.americandj.com - Vplus Series Amplifiers Power Amplifier User Manual Page 6
V2000plus REAR PANEL 1. Cooling Fan - Dual speed cooling fans. These fans are used to cool the internal parts of the amplifier. Never block the fan grills in any way or mount in an en- close rack, doing so may cause the amplifier to overheat and fail. 2. Channel 2 Input - Connect the input source for channel two to either the balance XLR or the balanced/unbalanced 1/4” input jacks. The 1/4” TRS plug is configured as follows; Tip is positive, Ring is negative and Sleeve is ground. The XLR jack is configured as follows; Pin three positive, pin two negative, pin one ground. See page 9 for more details on input configuration. 3. Low Cut Filter Mode Switches - These dip switches are used to active and adjust the built-in Low Cut Filter, see "Low Cut Filter" on page 14. 4. Channel 1 Input - Connect the input source for channel one to either the balance XLR or the balanced/unbalanced 1/4” input jacks. The 1/4” TRS plug is configured as follows; Tip is positive, Ring is negative and Sleeve is ground. The XLR jack is configured as follows; Pin three positive, pin two negative, pin one ground. See page 9 for more details on input configuration. 5. Mono-Bridge/Stereo Selectable Switch - This switch changes the amplifier operating mode from either stereo or mono bridge. Amplifiers are shipped in stereo mode. 6. Fuse Holder - This holder houses the external fuse. Always replace with the exact same type fuse unless otherwise instructed by an authorized American Audio® technician. 7. Channel 2 XLR THRU Jack - This jack is used to send a parallel signal from the channel two input jacks to another device or amplifier. 8. Channel 1 XLR THRU Jack - This jack is used to send a parallel signal from the channel one input jacks to another device or amplifier. 9. Channel 2 Output Jack/5 way Binding Post - Connect to your speaker’s input jack. Red is positive signal and Black is negative signal. 10. Channel 1 Output Jack/5 way Binding Post - Connect to your speaker’s input jack. Red is positive signal and Black is negative signal. 11. Ground Lift Switch - This switch is used to disconnect the internal ground signal from the amplifier chassis ground. This may reduce the buzz that is caused from an electrical 60Hz cycle. 12. A/C Power Input - Plug this cable in to a standard 110~120v wall outlet. Never plug your amplifier in to a wall outlet that does not match the required voltage of your amplifier, serious damage may occur to your unit. Diagram 3 1234 314 10987 2 1112 516 American Audio® - www.americandj.com - Vplus Series Amplifiers Power Amplifier User Manual Page 7
V3000plus REAR PANEL 1. Cooling Fan - Dual speed cooling fans. This fans are used to cool the internal parts of the amplifier when in use. Never block the fan grills in any way or mount in an enclose rack, doing so may cause the amplifier to overheat and fail. 2. Channel 2 Subwoofer Mode On/Off Switch - This switch activates the amplifier subwoofer mode for channel two. 3. Channel 2 Frequency Adjustment. - This pot is used to adjust the frequency response when running channel two in subwoofer mode. 4. Channel 2 Input - Connect the input source for channel two to either the balance XLR or the balanced/unbalanced 1/4” input jacks. See page 9 for more details on input configuration. 5. Low Cut Filter Mode Switches - These dip switches are used to activate and adjust the built-in Low Cut Filter, see "Low Cut Filter" on page 14. 6. Channel 1 Input - Connect the input source for channel one to either the balance XLR or the balanced/unbalanced 1/4” input jacks. See page 9 for more details on input configuration. 7. Channel 1 Frequency Adjustment.- This pot is used to adjust the frequency response when running channel two in subwoofer mode. 8. Mono-Bridge/Stereo Selectable Switch - This switch changes the amplifier operating mode from either stereo or mono bridge. Amplifiers are shipped in stereo mode. 9. Fuse Holder - This holder houses the external fuse. Always replace with the exact same type fuse unless otherwise instructed by an autho- rized American Audio® technician. 10. Channel 2 XLR THRU Jack - This jack is used to send a parallel signal from the channel two input jacks to another device or amplifier. 11. Channel 1 XLR THRU Jack - This jack is used to send a parallel signal from the channel one input jacks to another device or amplifier. 12. Channel 2 Output Jack/5 way Binding Post - Connect to your speaker’s input jack. Red is positive signal and Black is negative signal. 13. Channel 1 Output Jack/5 way Binding Post - Connect to your speaker’s input jack. Red is positive signal and Black is negative signal. 14. Ground Lift Switch - This switch is used to disconnect the internal ground signal from the amplifier chassis ground. This may reduce the buzz that is caused from an electrical 60Hz cycle. 15. Channel 1 Subwoofer Mode On/Off Switch - This switch activates the amplifier subwoofer mode for channel one. 16. A/C Power Input - Plug this cable in to a standard 110~120v wall outlet. Be sure that supplied voltage matches that of the required volt- age of you amplifier. Never plug your amplifier in to a wall outlet that does not match the required voltage of your amplifier, serious damage may occur to your unit. Diagram 4 1234 516 13121110 423 141516 8719 American Audio® - www.americandj.com - Vplus Series Amplifiers Power Amplifier User Manual Page 8
OUTPUTS: Binding Post/Banana Plug - Connect your speakers to the binding post outputs on the rear of the amplifier. The speaker wire may be connect by bare wire (directly connected, usually for permanent connections), banana plug, or spade connector. Connections are made to Channels 1 and 2 output’s for stereo mode or across the red termi- nals of Channels 1 and 2 for Mono Bridge Mode. Important Notice: Although a speaker will operate with the positive and negative leads plugged into either termi- nal on the amplifier binding post, be sure to plug the negative lead into the black terminal and positive lead into the red terminal. Ensuring proper polarity will avoid speakers being out of phase, that can cause a loss of bass response. Important Notice: Banana Plugs - When connecting your speakers to the amplifier using banana jacks; Be sure that the red and black caps on the binding post are completely screwed in. Insert the banana jacks into the caps of the binding post, be sure that the banana jack is inserted securely to avoid the risk of it popping out. Set Up INPUTS - The Vplus series amplifiers allows you to use two types of input connectors per a channel, a XLR jack for balanced con- nections and a 1/4” female jack that will accept balanced and unbalanced connectors. Use these connections to connect the output signal from a mixer, cross-over or EQ to your Vplus series amplifier. A balanced connection is recommended for cable runs longer that 20ft. When constructing your own XLR cables follow the pin configuration describe below for proper connections. For cable runs shorter than 20ft. you may choose the 1/4” unbalanced input option. The 1/4” unbalanced input option may be more convenient for most users due to the abundant supply of prefabricated cables available at your local audio dealer. You may use the two XLR “Input Thru” jacks to jump a parallel connection to another amplifier or other device. For Example: Connect a XLR cable to the input of chan- nel one. You may now connect a XLR cable from the channel one “Input Thru” jack to the input jack of another amplifier’s channel one input. This will reduce the use of “Y” cables. American Audio® - www.americandj.com - Vplus Series Amplifiers Power Amplifier User Manual Page 9 Diagram 7Diagram 6Diagram 5 Diagram 8 �������������������� Hot(+) Negative(-) ������������������� Ground/ShieldHot(+) Negative(-)2Hot(+data) 3Negative(-data) 1Ground/Return/0v) 1 3 2 ����������������������� USITTStandard
Bare Wire Connections: When connecting your speakers to the amplifier using bare wire; Unscrew the red and black caps on the binding post, be sure not to completely remove or unscrew the red and black caps. Strip back the wire insulation 1/2” (13mm). Insert the bare wire into the hole that was reveled by unscrewing the binding post cap. After inserting the wire into the binding post hole, screw the binding post cap down on the wire. To reduce the risk of shock or damage to your amplifier, be sure that the wire connected to one binding post does not come in contact with that of another. Spade Connector: (Diagram 6) When connecting your speakers to the amplifier using spade connector; Unscrew the red and black caps on the binding post, be sure not to completely remove or unscrew the red and black caps. Insert the spade con- nector in to the binding post and tighten the caps down on the spade connector. To reduce the risk of shock or damage to your amplifier, be sure that the wire connected to one binding post does not come in contact with that of another. When connecting your speakers to the amplifier using banana jacks; Be sure that the red and black caps on the binding post are tighten down completely. Insert the banana jacks into the caps of the binding post, be sure that the banana jack is inserted securely to avoid the risk of it popping out. Mono Bridge Connections: Mono bridge operation connections will follow the above descriptions however, when operating in mono bridge operation the speaker connections will run between the two positive (red) leads. Use channel two pos- itive output terminal for the negative connection and the channel one positive output terminal for the positive connection. Typical speaker output using bare wire. Insert bare wire into the binding post and tighten. Typical speaker output using spade connectors. Insert bare wire into the binding post and tighten. Diagram 11 Diagram 10 1000 WATTS BRIDGE MONO 120V~60Hz 6AMP CAUTION4 OHMS MINIMUM IMPEDANCE PRE CHANNEL 4 OHMS MINIMUM IMPEDANCE IN MONO BRIDGE MODE OUTPUT INPUTCH 1 WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE THIS EQUIPMENT T O RAIN OF MOIS- TUREA VIS: RISQUE DE CHOC ELECT- TRIQUE - NE P AS OUVRIR. P2P3 P1+- + -+ -+ CH 1 CH 2 PROFESSIONAL POWER AMPLIFIER STEREO BRIDGE INPUTCH 2 XX 4 Ohm Minimum Speaker LoadUses Channel 1 Inputs Only Rear V1000plus American Audio® - www.americandj.com - Vplus Series Amplifiers Power Amplifier User Manual Page 10 Diagram 12