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DPA250
INSTALLATION/OWNER’S MANUAL
Mobile Power Amplifier
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DPA250 INSTALLATION Preparation Please read entire manual before installation. Due to the technical nature of amplifiers, it is highly recommended that your DUAL amplifier is installed by a professional installer or an authorized dealer. Before You Start • Disconnect negative battery terminal. (consult a qualified technician for instructions) • Avoid installing the amplifier where it would be subject to high temperatures, such as from direct sunlight, or wh
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DPA250 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 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 r
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DPA250 INSTALLATION Connections and Control Locations 1 2 3 4 5 6 7 8 9 10 11 12 RCA Line Inputs Ground Connection 1 8 Gain Control Remote Connection 2 9 Crossover Frequency Control +12VDC Battery Connection 3 10 Crossover Mode Fuse 4 11 Bass Boost Speaker Connections 5 12 Treble Boost 6 Power/Protect LEDs 7 4
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DPA250 INSTALLATION Typical Wire Routing 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. Fuse Rating Power/Ground Wire Size When replacing the fuse, make sure new For optimum performance, use only the wire fuse is the correct type and amperage. Using size listed below or larger. Make sure to u
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DPA250 INSTALLATION Amplifier Connections 2 Speakers (stereo) Subwoofer (mono) Speaker Connections Connect speaker wires observing polarity. The minimum impedance load is 2 ohms stereo and 4 ohms bridged. Use of loads lower than these is not recommended and may cause amplifier damage. The DPA250 can be wired for stereo, bridged or stereo/bridged simultaneous operation. Typical Stereo Wiring Typical Bridged Wiring (2 ohms minimum) (4 ohms minimum) Input S
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DPA250 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
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DPA250 WARRANTY Limited One-Year Warranty This warranty gives you specific legal What to do? rights. You may also have other rights 1. Before you call for service, check the which vary from state to state. troubleshooting guide in your owner’s manual. A slight adjustment of any Dual Electronics Corp. warrants this custom controls may save you a service product to the original purchaser to be free call. from defects in material and w
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DPA250 OPERATION Specifications CEA-2006 Power Standard Specifications (reference: 14.4VDC, 20Hz~20kHz) Power Output (14.4VDC, 20Hz ~ 20kHz): 35 Watts RMS x 2 channels @ 4 ohms and ≤ 1% THD+N 50 Watts RMS x 2 channels @ 2 ohms and ≤ 1% THD+N 100 Watts RMS x 1 channel @ 4 ohms (bridged) and ≤ 1% THD+N Total dynamic power: 250 Watts @ 4 ohms Signal to noise ratio: 75dBA (reference: 1 watt into 4 ohms) Frequency response
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DPA250 OPERATION Troubleshooting Problem Cause Action Unit will not turn on +12V wire not connected or incorrect voltage Check connections for proper voltage (no power LED indicator) REM wire not connected or incorrect voltage (11~16VDC) GND wire not connected Check connection to ground Fuse(s) blown Replace fuse(s) Unit has power - power Speaker wires not connected Check connections at speakers LED is green Volume turned all the way down Incr
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DPA250 OPERATION Notes 11
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