American Audio Stereo Amplifier V1500 User Manual

American Audio®  
User Instructions  
American Audio®  
4295 Charter Strret  
Los Angeles Ca. 90058  
Revised 5/01  
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Important Precautions  
Introduction  
1. Be sure to save the packing carton in case you may ever have  
to return the unit for service.  
2. Read all documentation before attempting to operate your  
new amplifier. Please save all you documentation for future  
reference.  
3. Do not spill water or other liquids in to or on to your amplifier.  
4. Be sure that the local power outlet match that or the required  
voltage for your amplifier.  
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. 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.  
7. Always have the front gain controls set to their lowest level  
during initial power-up to prevent speaker damage .  
8. Disconnect from main power before making any type of  
connection.  
9. Do not block the units cooling vents or fan intake. If this unit is  
being used in an extremely dusty or smoky environment, the  
unit should be blown through on a regular basis.  
10.Do not remove the top cover under any conditions. There are  
no user serviceable parts inside.  
Introduction: Congratulations and thank you for purchasing the  
American Audio® V1500™ amplifier. This amplifier is a representa-  
tion ofAmericanAudio’s continuing commitment to produce the best  
and highest quality products all at an affordable price. This ampli-  
fier is an ultra-compact amplifier that packs a big punch! Please  
read and understand this manual completely before attempting  
to operate your new amplifier. This booklet contains important  
information concerning the proper any safe operation of your new  
amplifier.  
Unpacking:Carefully open and unpack your amplifier. Be sure  
to save the packaging in case you may ever need to return your  
unit to the factory. After unpacking, inspect the amplifier for any  
type of damage that may have occurred during shipping or transit.  
If you notice any type of damage notify your dealer immediately  
for instructions.  
Installation: This amplifier is made to mount in 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  
recommended if the unit is to mounted in to a mobile rack.  
Customer Support: American Audio® provides a toll free cus-  
11.Do not drive the inputs with a signal level greater than that tomer support line, to provide set up help and to answer any ques-  
required to drive equipment to full output.  
12.Do not try to run the input signal of an amplifier by the output of operation. You may also visit us on the web at www.americandj.com  
any other amplifier.  
for any comments or suggestions. For service related issue please  
13.Never ground a RED (positive) terminal. Never connect a RED contact American Audio®. Service Hours are Monday through  
tion should you encounter problems during your set up or initial  
(hot) terminal to another RED (hot) terminal.  
14.Disconnect the unit’s main power when left unused for long  
periods of time.  
Friday 9:00 a.m. to 5:00 p.m. Pacific Standard Time.  
Voice:  
Fax:  
(800) 322-6337  
(323) 582-2610  
E-mail:  
V1500™ Power Amplifier Instructions page 3  
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1
2
3
4
5
6
7
FRONT PANEL  
Diagram 1  
11  
11  
10  
6. Channel 2 Protect indicator -  
8
9
1. Channel 1 Signal indicator -  
This Green LED will glow when there is an input signal present.  
This red LED will glow when channel two goes in to protect mode.  
In protect mode the output signal to the speakers will terminated  
to channel two.  
2. Channel 1 Protect indicator -  
This red LED will glow when channel one goes in to protect mode.  
In protect mode the output signal to the speakers will terminated  
to channel one.  
7. Channel 2 Signal indicator -  
This Green LED will glow when there is an input signal present.  
8. Channel 1 Gain control -  
3. Channel 1 Clip indicator -  
This knob adjust the channel one volume output to the speakers  
connect to channel one.  
This LED comes on at the amplifiers clipping point, the point when  
the output signal begins to distort. Under heavy clipping lower  
the input gains (Diagram 8) to reduce the risk of damage to your  
speakers and amplifier.  
9. Power Switch -  
This switch turns the unit on.  
10. Channel 2 Gain control -  
4. Power LED -  
This LED will glow when the amplifier is turned on, indicating  
power is going to the unit.  
This knob adjust the channel one volume output to the speakers  
connect to channel one.  
5. Channel 2 Clip indicator -  
11. Exhaust Cooling Vents -  
This LED comes on at the amplifiers clipping point, the point when  
the output signal begins to distort. Under heavy clipping lower the  
input gains (Diagram 10) to reduce the risk of damage to your  
speakers and amplifier.  
A cooling fan is mounted at rear of the amplifier. These exhaust  
vents allow hot air to be pushed out of the amplified to allow  
ample cooling of the internal components. Do Not Block These  
Vents!  
V1500™ Power Amplifier Instructions page 4  
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REAR PANEL  
1
2
3
4
5
6
Diagram 2  
7
8
9
may occur to your unit.  
5. Channel 1 Speaker Output - 5 Way Binding Post -  
1. Channel 1 Input -  
Connect the input source for channel one to either the balance  
XLR or the unbalanced 1/4” input jacks. 1/4” TS plug - Tip is  
positive, Sleeve is negative. XLR - Pin three positive, Pin two is  
negative, Pin one is ground. See the chart on page 6.  
Connect your channel one speakers to channel one output.  
6. Channel 2 Speaker Output - 5 Way Binding Post -  
Connect your channel two speakers to channel two output.  
7. Mono-Bridge/Stereo Selectable Switch -  
2. Channel 2 Input -  
Connect the input source for channel two to either the balance  
XLR or the unbalanced 1/4” input jacks. 1/4” TS plug - Tip is  
positive/Sleeve is negative. XLR - Pin three positive, pin two  
negative, pin one ground. See the chart on page 6.  
This push button switch changes the amplifier operating mode  
from either stereo or mono bridge. Amplifiers arrive to you preset  
in the stereo operation mode.  
3. Cooling Fan -  
8. Fuse -  
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.  
This house the external 8amp fuse. All way replace with exact  
same type fuse unless otherwise instructed to do so by an autho-  
rized American DJ™ service technician.  
9. Ground Lift Switch -  
4. A/C Power Input -  
This switch is used to disconnect the internal ground signal from  
the chassis ground. This may reduce the buzz that is caused  
from an electrical 60Hz cycle.  
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  
V1500™ Power Amplifier Instructions page 5  
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INPUTS  
The V1500™ allows you two types of input connector per a channel, a XLR jack for balanced connections and a 1/4” jack for  
unbalanced connections. Use these connection to connect the output signal from a mixer, cross-over or EQ to your V1500 amplifier.  
The XLR connection is recommended for cable runs longer that 20ft. When building 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” input option. The 1/4” input  
option may be a little more convenient for most user due to the abundant supply of prefabricated cables on the market. You may  
also use the two different types of input cables to jump a parallel connection to another amp. For Example: Connect a XLR cable  
to the input of channel one. You may now connect a 1/4” cable to the input put jack of channel one and jump that cable to the  
input of another amp.  
Unbalanced 1/4” Plug  
GROUND  
XLR MALE SOCKET  
NON-INVERTING INPUT +  
XLR Pin Configuration:  
HOT 3  
1 EARTH  
US ITT Standard  
PIN 1: Ground / Return / 0v  
PIN 2: Negative data complement (-,Inverted)  
2 COLD  
DATA IN  
PIN 3: Positive data (+, inverted)  
Diagram3  
m4  
V1500™ Power Amplifier Instructions page 6  
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OUTPUTS:  
Connect your speakers to the binding post outputs in the rear of the amp. The speaker wire may be connect by bare wire (directly  
connected usually for permanent connections), banana plug, or spade connector. Connections are made to Channel one and Channel  
two output for stereo mode or across the red terminals of Channels one and two for Mono Bridge Mode. Important Notice: Although  
a speaker will operate with the positive and negative leads plugged into either terminal 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 your speakers being  
out of phase, that can cause a loss of bass response.  
Bare WIre Connections: (Diagram 5)  
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)  
Typical Speaker Output Binding Post.  
Insert bare wire into the binding post.  
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 connector in to the binding post  
and tighten the caps down on the spade connector. To reduce the risk of shock or  
Diagram 5  
damage to your amplifier, be sure that the wire connected to one binding post does  
not come in contact with that of another.  
Banana Plug:  
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.  
Typical Speaker Output Binding Post.  
Insert spade connector into the binding  
post and tighten.  
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 output for negative and channel one  
output for positive connection. (See page 8 Diagram 8)  
Diagram 6  
©
®
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Typical Stereo Output Connections  
Diagram 7  
SPEAKERS  
SPEAKERS  
4 OHM MINIMUM  
4 OHM MINIMUM  
Diagram 8  
TYPICAL MONO BRIDGE SET-UP  
SPEAKERS  
8 OHM MINIMUM  
V1500™ Power Amplifier Instructions page 8  
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Typical Stereo Set-Up  
Diagram 9  
Typical Mixer  
V1500™ (Rear View)  
Typical Speaker  
Connect to V1500™ Channel Two Output  
Typical Speaker  
Connect to V1500™ Channel One Output  
V1500™ Power Amplifier Instructions page 9  
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NORMAL OPERATION:  
Page 9/Diagram9 show you an example of a typical stereo set-up. Connect your inputs into channels one and two of the amplifier.  
Connect your speakers to the outputs on the rear of the amplifier. Be sure that your front gain controls are turned down to their lowest  
level (full counter-clockwise). Turn your amp on. Turn your input level up. Use your front gain controls to regulate the output volume. Be  
sure not to raise the volume to the clip level however, an intermittent clip signal is acceptable.  
MONO BRIDGE OPERATION:  
Page 8/Diagram 8 give you a description of mono bridge set-up. Be sure you amplifier and all other equipment is shut off. Press  
the Stereo/Mono switch to the in position (Page 5/Diagram 2 #7). Connect an input signal to channel one. Connect your speaker  
across the red output binding post on the rear of your amplifier (See Page 7 Mono Bridge Set-Up). Turn your equipment on (your  
amplifier should be the last piece you turn on). Apply an input signal to your amplifier. Turn channel two gain up. Use the channel  
one gain to regulate your amplifier output.  
PROTECTION:  
LIMITER  
During normal operation, the limiter does not affect the audio signal and is, in fact inaudible. It will allow brief clipping of peaks and  
will only activate when continuous,hard clipping occurs. The limiter will then reduce the audio signal enough to minimize the amount of  
clipping. When the signal amplitude decreases enough that clipping ends, the limiter will deactivate and cease its gain reduction.  
SHORT CIRCUIT PROTECTION  
The Output Short circuit protects the output devices from short circuits and stressful loads.  
THERMAL PROTECTION  
A single variable-speed fan provides adequate cooling. But if the heatsink temperature exceeds 90C., the amplifier will mute until  
the amplifier cools down.  
INPUT/OUTPUT PROTECTION  
The input circuits are isolated by 10k resistors. An ultrasonic network decouples RF from the output and helps keep the amplifier  
stable with reactive loads.  
V1500™ Power Amplifier Instructions page 10  
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SPECIFICATIONS  
MODEL NO:  
V-1500  
V-2000 MKII  
V-3000  
V-4000  
Output Power:  
2 ohms, 1 khz 1%THD  
4 ohms, 1khz, 1%THD  
8 ohms, 1khz 1%THD  
(Bridge Mode, mono)  
4 ohms, 1khz, 1%THD  
8 ohms, 1khz, 1%THD  
N/A  
540W RMS PER CH.  
400W RMS PER CH.  
280W RMS PER CH.  
800W RMS PER CH.  
600W RMS PER CH.  
360W RMS PER CH.  
1400W RMS PER CH.  
1010W RMS PER CH.  
600W RMS PER CH.  
280W RMS PER CH.  
200W RMS PER CH.  
N/A  
1050 WATTS RMS  
820 WATTS RMS  
1500 WATTS RMS  
1100 WATTS RMS  
2500 WATTS RMS  
1650 WATTS RMS  
600 WATTS RMS  
Total Harmonic Distortion:  
20Hz-20kHz, @ rated  
output power, 8 ohms  
Less than 0.1%  
1.5v rms  
Less than 0.1%  
Less than 0.1%  
Less than 0.02%  
1.0v RMS (0 dBv)  
Input Sensitivity and  
Impedance: @ rated  
output power, 8 ohms  
1.0v RMS (0 dBv)  
1.0v RMS (0 dBv)  
Dimensions &Weight:  
1.75(4.4cm)  
19”(48.3cm)  
15.25(40cm)  
25 lbs. (10.5kg)  
3.5(8.8cm)  
3.5(8.8cm)  
5.25(13.3cm)  
19”(48.3cm)  
15.9(40.5cm)  
61.7 lbs. (28 kg.)  
Height  
Width  
Depth  
Weight  
19”(48.3cm)  
15.9(40.5cm)  
30 lbs. (13.6kg)  
19”(48.3cm)  
15.9(40.5cm)  
31 lbs. (14 kg.)  
Frequency Response:  
+/- 1db, 1w RMS. 8 ohms  
+/- 0.2 db, @ rated output,  
8 ohms  
10 Hz - 40 kHz  
20 Hz- 20 kHz  
10 Hz - 40 kHz  
20 Hz - 20 kHz  
10 Hz- 40 kHz  
20 Hz- 40 kHz  
10 Hz- 40 kHz  
20 Hz- 40 kHz  
Hum & Noise:  
Below rated output,8 ohms 100 dB, unweighted  
100 dB, unweighted  
7A @ 120vAC  
100 dB, unweighted  
10A @ 120vAC  
100 dB, unweighted  
40A @ 120vAC  
Power Consumption: @  
8A @ 120v AC  
rated output power, 8 ohms  
Cooling System:  
2 Dual Speed Fans  
and Heatsinks  
2 Dual Speed Fans  
and Heatsinks  
2 Dual Speed Fans  
and Heatsinks  
1 Dual Speed Fan  
and Heatsinks  
V1500™ Power Amplifier Instructions page 11  
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©American Audio  
American DJ Group of Companies World Headquarters:  
4295 Charter Street Los Angeles, CA 90058 USA  
Tel: 323-582-2650 / Fax: 323-582-2610  
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