DPA250 INSTALLATION/OWNER’S MANUAL Mobile Power Amplifier
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.
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.
DPA250 INSTALLATION Connections and Control Locations 1 8 4 9 2 10 3 4 5 11 6 7 12 1 RCA Line Inputs 8 Ground Connection 2 Gain Control 9 Remote Connection 3 Crossover Frequency Control 10 +12VDC Battery Connection 4 Crossover Mode 11 Fuse 5 Bass Boost 12 Speaker Connections 6 Treble Boost 7 Power/Protect LEDs
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 fuse is the correct type and amperage. Using an incorrect fuse could damage the amplifier. For optimum performance, use only the wire size listed below or larger.
DPA250 INSTALLATION Amplifier Connections 2 Speakers (stereo) Subwoofer (mono) Typical Stereo Wiring Typical Bridged Wiring 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.
DPA250 INSTALLATION Configuration/Setup Input level Control Crossover Mode 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.
DPA250 WARRANTY Limited One-Year Warranty This warranty gives you specific legal rights. You may also have other rights which vary 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. Dual Electronics Corp.
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: 20Hz ~ 20kHz (+/-3dB) Amplifier dimensions: 8.27”(L) x 7.09”(W) x 1.
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 Unit has power - power Speaker wires not connected LED is green Volume turned all the way down (but no sound) One or more speaker wires touching each other or touching chassis ground Speaker(s) defective o
DPA250 OPERATION Notes 11
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