Dual Stereo Amplifier DA304 User Manual

DA304  
DA602  
DA604  
DA904  
DA4001  
DA6001  
DA8001  
PERFORMANCE SERIES  
INSTALLATION / OWNER'S MANUAL  
Mobile Power Amplifiers  
 
INSTALLATION  
Connection Descriptions  
NOTE:  
Be sure to follow specific instructions included with your amplifier installation kit  
(not included with this amplifier). The information below should be used as a general  
guideline only.  
Power Wire (+12V)  
• Disconnect negative battery terminal before proceeding. Consult a qualified  
technician for instructions if you are unsure.  
• Plan wire routing before cutting any wires to length. Begin by routing the power  
+12V wire from the battery to the amplifier location. Use a grommet when running  
wires through the firewall or metal openings. Avoid running the power wire near  
existing vehicle wiring to prevent induced noise from entering the audio system.  
• Use extreme caution when drilling holes to avoid damaging fuel lines or existing  
vehicle wiring.  
• The +12V wire MUST be fused within 18" of the battery for protection of the vehicle’s  
electrical system.  
Ground Wire (GND)  
• The amplifier ground wire should be as short as possible (no more than 36" or  
1 meter). Choose a clean unpainted section of metal or the vehicle chassis when  
attaching the ground connection. Be sure to clean the area of any dirt or grease.  
Remote Turn-on Wire (REM)  
• The remote turn-on wire connects to the head unit's amplifier turn-on lead or  
power antenna output.  
Speaker Wires  
• Choose adequate gauge speaker wire depending on your exact amplifier/speaker  
combination. Be sure to observe polarity when connecting.  
• Do not ground any speaker wires or connect any speaker wires together.  
Input Signal  
• The amplifier's input signal connects to the head unit's low level (RCA) or high level  
(speaker wire) outputs.  
• Low level input signals deliver the best performance. If unavailable, use the high  
level inputs - when interfacing with factory head unit for instance.  
CAUTION  
• Do not use both low and high level inputs at the same time. Connect only one or the  
other.  
• Keep low level inputs away from any power wires to avoid engine noise.  
• Never run any wires underneath or outside the vehicle.  
3
 
INSTALLATION  
Audio Inputs and Controls  
DA602  
1
2
3
4
5
6
7
8
DA304  
DA604  
DA904  
1
2
4
5
6
7
8
High Level Inputs  
RCA Line Inputs  
Pass Through  
Gain  
Hi-Pass Filter  
Crossover Mode  
Low-Pass Filter  
Bass Boost  
5
1
2
3
4
6
7
8
4
 
INSTALLATION  
Power and Speaker Connections  
DA602  
2
3
4
5
1
DA304  
2
3
4
5
1
DA604  
DA904  
2
3
4
5
1
Remote Turn On  
Speaker Connections  
Fuse(s)  
1
2
3
4
5
Ground Connection  
+12VDC Battery Connection  
5
 
INSTALLATION  
Audio Inputs and Controls  
DA4001  
DA6001  
DA8001  
1
2
3
4
5
6
7
8
9
10  
RCA Line Inputs  
Pass Through  
Gain  
Bass Boost  
6
1
2
3
4
5
Low Pass Filter  
7
8
Slave/Master Controls  
Data Link  
Phase Control  
Subsonic Filter  
9
Remote  
10  
6
 
INSTALLATION  
Power and Speaker Connections  
DA4001  
DA6001  
DA8001  
3
4
5
1
2
3
4
5
1
2
3
4
5
1
2
Remote Turn On  
Ground Connection  
Speaker Connections  
Fuse(s)  
1
2
3
4
5
+12VDC Battery Connection  
7
 
INSTALLATION  
Typical Wire Routing  
MAXIMUM  
GROUND  
FUSE  
No more than 36"  
(1 meter)  
12V BATTERY  
12V DC  
(Power)  
RCA CABLES  
SPEAKERS  
2-8 ohms  
REM (Remote Turn On)  
Main Power Connections  
Connect +12V, GND and REM wires accordingly. A suitable fuse MUST be installed  
on the +12V lead within 18" of the battery for protection of the vehicle’s electrical  
system.  
Power/Ground Wire Size  
Fuse Rating  
For optimum performance, use only the wire  
size listed below or larger. Make sure to use  
the same size power and ground wire.  
When replacing fuses, make sure new fuse  
is the correct type and amperage. Using an  
incorrect fuse could damage the amplifier.  
DA304 4 Ga.  
DA602 4 Ga.  
DA604 4 Ga.  
DA904 4 Ga.  
DA4001 2 Ga.  
DA6001 2 Ga.  
DA8001 2 Ga.  
DA602 20A x 1  
DA304 30A x 1  
DA604 20A x 2  
DA904 30A x 2  
DA4001 30A x 3  
DA6001 30A x 4  
DA8001 30A x 5  
8
 
INSTALLATION  
Amplifier Connections  
2 Speakers (stereo)  
Subwoofer (mono)  
Speaker Connections  
Connect speaker wires  
observing polarity. The  
minimum impedance load  
for the DA304, DA602, DA604  
and DA904 is 2 ohms stereo  
and 4 ohms bridged. Use of  
loads lower than these is not  
recommended and may cause  
amplifier damage. The DA304,  
DA602, DA604 and DA904 can  
be wired for stereo, bridged or  
stereo/bridged simultaneous  
operation.  
2-8 ohms  
1-8 ohms  
Typical Stereo Wiring  
Typical Bridged Wiring  
(2 ohms minimum)  
(4 ohms minimum)  
DA602 speaker connections shown  
Input Signal Connections  
Low Level Input (RCA)  
Low level (RCA) input signal is preferred for best performance. Typical trunk-  
mount amplifier installations require a 17-20 foot RCA cable. Most trucks  
and under-seat applications require a 6-9 foot RCA cable. Using twisted pair  
construction RCA cables will minimize noise.  
High Level Input  
(Speaker Wire)  
High level inputs should only  
be used when RCA outputs are  
not available from the head unit.  
Connect the head unit speaker  
outputs to the high level input  
High-Level Input  
(speaker cables)  
connector as shown below. The  
black wire (signal reference  
ground) may or may not require a  
connection to chassis ground  
- depending on your particular  
installation.  
Low-Level Input  
(RCA)  
Note: Do not use both low and high level inputs  
at the same time - connect only one or the  
other. High level inputs not available on DA4001,  
DA6001 and DA8001.  
9
 
INSTALLATION  
Master/Slave Mode  
The Dual mono amplifiers feature a Master/Slave mode, where two amplifiers can be  
connected together. When two mono amplifiers are connected together, the power  
from both amplifiers is combined.  
10  
 
INSTALLATION  
Master/Slave Mode (cont.)  
*MASTER  
For master amplifier, set the switch to master. This will route the signal through Line-out to  
the slave amplifier. Set the phase to 0, all adjustments for gain and sound are done on this  
amplifier. The remote subwoofer control should be connected to master amplifier as well.  
*SLAVE  
For slave amplifier, set the switch to slave and phase to 180. Connect the Line-out of master  
amplifier to input on this amplifier. All adjustments should be set to minimum.  
Connect Data-Link plug from master to slave amplifier. For speaker connection, the positive  
(+) of the speaker connects to positive (+) of master and negative (-) of the speaker connects to  
positive (+) of slave amplifier. Connect both negatives (-) of master and slave each other.  
NOTE: FOR BEST PERFORMANCE, USE WIRE 12 AWG OR THICKER FOR THE NEGATIVE TO  
NEGATIVE CONNECTION.  
*MINIMUM IMPEDANCE MUST NOT BE LOWER THAN 2 OHMS  
11  
 
INSTALLATION  
Configuration/Setup  
Input level Control  
The input level control (gain) is used to obtain the  
best possible match between the head unit audio  
output and the amplifier input. Begin by turning  
the input level control fully counterclockwise. Next,  
turn up the head unit volume control around 3/4 of  
the way up. Adjust the input level control clockwise  
until audible distortion is heard, then slightly  
counterclockwise to provide the best match.  
Repeat for all input level controls.  
Crossover Mode  
The crossover is used to filter out frequencies  
above or below a certain point. Choose LPF when  
using the amplifier with subwoofers, HPF when  
using with midrange/tweeter combinations and  
FLAT when using with coaxial-type speakers.  
Note: Choose FLAT when using the amplifier in  
stereo/bridged simultaneous mode. In this mode,  
passive crossovers are required. Failure to use  
the correct passive components may damage the  
amplifier and/or speakers. Consult a qualified  
professional for recommendations.  
Crossover Frequency  
Control  
This control allows precise adjustment of the  
crossover frequency.  
Bass Boost  
This control provides additional boost @ 45Hz  
when used with subwoofers. Adjust this control  
with caution - as improper use can damage  
speakers!  
Subsonic Filter  
(DA4001, DA6001 &  
DA8001)  
Setting this control to the desired frequency will  
limit harmful frequencies below the setting from  
going to the subwoofer(s), preventing possible  
damage from frequencies that subwoofers are not  
designed to handle.  
LED Indicators  
The green LED indicator illuminates during normal  
operation (POWER) and the red LED indicator  
is visible when the amplifier detects a fault  
(PROTECT).  
12  
 
INSTALLATION  
Troubleshooting  
Problem  
Cause  
Action  
+12V wire not connected or incorrect  
voltage. REM wire not connected or  
incorrect voltage  
Check connections for proper voltage  
(11~16VDC)  
Unit will not turn on  
(no power LED  
indicator)  
GND wire not connected  
Fuse(s) blown  
Check connection to ground  
Replace fuse(s)  
Speaker wires not connected  
Volume turned all the way down  
Check connections at speakers  
Increase volume level at head unit  
One or more speaker wires touching  
each other or touching chassis  
ground  
Insulate all bare speaker wires from  
each other and chassis ground  
Unit has power -  
LED is green (but  
no sound)  
Speaker(s) defective or damaged  
Input signal not connected  
Incorrect fuse rating  
Check/replace speaker(s)  
Check high or low level inputs for  
proper connection  
Use fuse(s) with correct rating  
Check for pinched wire  
Unit blows fuse(s) +12V wire touching chassis ground  
Speaker(s) defective or damaged  
Check/replace speaker(s)  
Make sure amplifier is grounded to  
clean bare metal  
Bad ground connection  
Engine noise  
Signal ground loop or RFI (radio  
frequency interference)  
Re-route RCA cables from existing  
high current wiring  
One or more speaker wires touching  
each other or touching chassis  
ground  
Insulate all bare speaker wires from  
each other and chassis ground  
LED illuminates red Speaker(s) defective or  
(protect mode) damaged internally (shorted)  
Check/replace speaker(s)  
Speaker load less than 2 ohms  
(stereo). Speaker load less than 4  
ohms (bridged)  
Adjust speaker load - amplifier will  
not operate at less than 4 ohms  
when bridged  
Distorted audio Incorrect input signal type or  
Check connections and reduce/  
adjust input level  
output  
input level too high  
Incorrect input signal type or  
input level too low  
Check connections and increase/  
adjust input level  
Low audio output  
Check (+) and (-) speaker  
connections  
Weak bass  
Speaker(s) are wired out of phase  
(Observe correct polarity)  
13  
 
INSTALLATION  
Specifications  
DA602  
Power Output (14.4VDC, 20Hz ~ 20kHz):  
•60 Watts RMS x 2 channels @ 4ohms  
100 Watts RMS x 2 channels @ 2ohms  
215 Watts RMS x 1 channel @ 4ohms (bridged)  
Peak Music Power Output: 380 Watts  
Signal to noise ratio: 90dB (THD< 0.05% @ 4Ω, 14.4V)  
Frequency response: 10Hz– 35kHz (-3dB)  
Amplifier dimensions: 2” x 9.3” x 7.9” (51 x 236 x 201 mm)  
DA304  
Power Output (14.4VDC, 20Hz ~ 20kHz):  
•40 Watts RMS x 4 channels @ 4ohms  
•65 Watts RMS x 4 channels @ 2ohms  
160 Watts RMS x 2 channels @ 4ohms (bridged)  
Peak Music Power Output: 500 Watts  
Signal to noise ratio: > 90dB (THD < 0.05% @ 4Ω, 14.4V)  
Frequency response: 10Hz– 35kHz (-3dB)  
Amplifier dimensions: 2” x 9.3” x 13.8” (51 x 236 x 351 mm)  
DA604  
Power Output (14.4VDC, 20Hz ~ 20kHz):  
•60 Watts RMS x 4 channels @ 4ohms  
100 Watts RMS x 4 channels @ 2ohms  
215 Watts RMS x 2 channels @ 4ohms (bridged)  
Peak Music Power Output: 650 Watts  
Signal to noise ratio: > 90dB (THD < 0.05% @ 4Ω, 14.4V)  
Frequency response: 10Hz– 35kHz (-3dB)  
Amplifier dimensions: 2” x 9.3” x 15.7” (51 x 236 x 399 mm)  
DA904  
Power Output (14.4VDC, 20Hz ~ 20kHz):  
•90 Watts RMS x 4 channels @ 4ohms  
140 Watts RMS x 4 channels @ 2ohms  
•360 Watts RMS x 2 channels @ 4ohms (bridged)  
Peak Music Power Output: 110 Watts  
Signal to noise ratio: > 90dB (THD < 0.05% @ 4Ω, 14.4V)  
Frequency response: 10Hz– 35kHz (-3dB)  
Amplifier dimensions: 2” x 9.3” x 11.4” (51 x 236 x 290 mm)  
14  
 
INSTALLATION  
Specifications  
DA4001  
Power Output (14.4VDC, 20Hz ~ 250Hz):  
•850 Watts RMS x 1 channel @ 2ohms  
1200 Watts RMS x 1 channel @ 1ohm  
Peak Music Power Output: 3200 Watts  
Signal to noise ratio: > 80dB (THD < 0.5% @ 4Ω, 14.4V)  
Frequency response: 20Hz -150Hz (-3dB)  
Amplifier dimensions: 2” x 9.3” x11.8” (51 x 236 x 300 mm)  
DA6001  
Power Output (14.4VDC, 20Hz ~ 250Hz):  
1200 Watts RMS x 1 channel @ 2ohms  
1800 Watts RMS x 1 channel @ 1ohm  
Peak Music Power Output: 4200 Watts  
Signal to noise ratio: > 80dB (THD < 0.5% @ 4Ω, 14.4V)  
Frequency response: 20Hz -150Hz (-3dB)  
Amplifier dimensions: 2” x 9.3” x 14.5” (51 x 236 x 368 mm)  
DA8001  
Power Output (14.4VDC, 20Hz ~ 250Hz):  
1500 Watts RMS x 1 channel @ 2ohms  
•2500 Watts RMS x 1 channel @ 1ohm  
Peak Music Power Output: 5200 Watts  
Signal to noise ratio: > 80dB (THD < 0.5% @ 4Ω, 14.4V)  
Frequency response: 20Hz -150Hz (-3dB)  
Amplifier dimensions: 2” x 9.3” x 17.3” (51 x 236 x 439 mm)  
15  
 
One Year Limited Warranty  
This warranty gives you specific legal rights.  
What to do?  
You may also have other rights which vary  
1. Before you call for service, check the  
troubleshooting guide in your owner’s  
manual. A slight adjustment of any  
custom controls may save you a service  
call.  
from state to state.  
Dual Electronics Corp. warrants this product  
to the original purchaser to be free from  
defects in material and workmanship for  
a period of one year from the date of the  
original purchase.  
2. If you require service during the  
warranty period, you must carefully  
pack the product (preferably in the  
original package) and ship it by prepaid  
transportation with a copy of the original  
receipt from the retailer to an  
Dual Electronics Corp. agrees, at our  
option, during the warranty period, to repair  
any defect in material or workmanship  
or to furnish an equal new, renewed  
or comparable product (whichever is  
deemed necessary) in exchange without  
charges, subject to verification of the defect  
or malfunction and proof of the date of  
purchase. Subsequent replacement products  
are warranted for the balance of the original  
warranty period.  
authorized service center.  
3. Please describe your problem in writing  
and include your name, a return  
UPS shipping address (P.O. Box not  
acceptable), and a daytime phone number  
with your shipment.  
4. For more information and for the location  
of the nearest authorized service center  
please contact us by one of the following  
methods:  
Who is covered? This warranty is extended  
to the original retail purchaser for products  
purchased from an authorized Dual dealer  
and used in the U.S.A.  
• Call us toll-free at 1-866-382-5476  
• E-mail us at [email protected]  
What is covered? This warranty covers all  
defects in material and workmanship in  
this product. The following are not covered:  
software, installation/removal costs,  
damage resulting from accident, misuse,  
abuse, neglect, product modification,  
improper installation, incorrect line voltage,  
unauthorized repair or failure to follow  
instructions supplied with the product, or  
damage occurring during return shipment  
of the product. Specific license conditions  
and copyright notices for the software can be  
Exclusion of Certain Damages: This warranty  
is exclusive and in lieu of any and all other  
warranties, expressed or implied, including  
without limitation the implied warranties of  
merchantability and fitness for a particular  
purpose and any obligation, liability,  
right, claim or remedy in contract or tort,  
whether or not arising from the company’s  
negligence, actual or imputed. No person or  
representative is authorized to assume for  
the company any other liability in connection  
with the sale of this product. In no event  
shall the company be liable for indirect,  
incidental or consequential damages.  
Dual Electronics Corp.  
Toll Free: 1-866-382-5476  
9AM-5PM, EST  
©2014 Dual Electronics Corp.  
NSA1113-V01  
 

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