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Skoda - Auto - skoda-karoq-2017-110444
Skoda - Auto - skoda-karoq-2017-brukerhandbok-110449
Skoda - Auto - skoda-karoq-2017-110460
Skoda - Auto - skoda-karoq-2017-ipasnieka-rokasgramata-110447
Skoda - Auto - skoda-karoq-2017-110457
Skoda - Auto - skoda-karoq-2017-omistajan-kasikirja-110439
Skoda - Auto - skoda-karoq-2017-manual-del-propietario-110438
Skoda - Auto - skoda-karoq-2017-savininko-vadovas-110446
Cars & Automotive Accessories - Kenwood - C929
Toys & Accessories - Lego - DUPLO Town - AROUND THE WORLD - 10805
Skoda - Auto - skoda-karoq-2017-kullan-m-k-lavuzu-110458
Barossa - Motorcycle - Barossa__Barossa_PYTHON_100cc_parts_5d8a7f921c3648a62136367
Skoda - Auto - skoda-karoq-2017-navod-k-obsluze-110433
Skoda - Auto - skoda-karoq-2017-110453
Skoda - Auto - skoda-karoq-2017-handleiding-110448
Pool Equipment - Haywood-Pool - Super Pump~All Super Pump Models
Skoda - Auto - skoda-karoq-2017-110431
Skoda - Auto - skoda-karoq-2017-prirocnik-za-lastnika-110456
VCRs & Accessories - Hitachi Electronics - VTM171A
Skoda - Auto - skoda-karoq-2017-instrukcja-obslugi-110450
Skoda - Auto - skoda-karoq-2017-manualul-de-utilizare-110452
Skoda - Auto - skoda-karoq-2017-agarmanual-110454
Barossa - Motorcycle - Barossa_PYTHON_100cc_parts
1981-1995--Chrysler--Lebaron--4 Cylinders J 2.5L MFI Turbo SOHC--31034803
1981-1995--Chrysler--Lebaron--4 Cylinders C 2.2L FI Turbo SOHC--31006701
Furniture & Storage - Blue Rhino - GAD1375SP
Skoda - Auto - skoda-karoq-2017-manual-do-proprietario-110451
Barossa - Motorcycle - Barossa__Barossa_PYTHON_100cc_parts
Skoda - Auto - skoda-karoq-2017-110441
Sewing Machine - Singer - 14T968DC %7C PROFESSIONAL 5
Grills & Accessories - Blue Rhino - Blue Rhino WAD996SP
Video Cameras, Camcorders, & Accessories - Canon - ZR900 Camcorder
Cars & Automotive Accessories - Kenwood - DPX-510
Skoda - Auto - skoda-karoq-2017-manuel-du-proprietaire-110440
Skoda - Auto - skoda-karoq-2017-instruktionsbog-110435
Skoda - Auto - skoda-karoq-2017-uzivatelska-prirucka-110455
Cameras & Accessories - Nikon - Nikon COOLPIX S203
Skoda - Auto - skoda-karoq-2017-110432
1981-1995--Chrysler--Lebaron--4 Cylinders B 2.2L 2BL SOHC--31218101
Skoda - Auto - skoda-karoq-2017-kezelesi-utmutato-110443
1981-1995--Chrysler--Lebaron--4 Cylinders D 2.6L 2BL SOHC--31218102
Skoda - Auto - skoda-karoq-2017-manuale-del-proprietario-110445
Skoda - Auto - skoda-karoq-2017-omaniku-kasiraamat-110436
Skoda - Auto - skoda-karoq-2017-110459
Cars & Automotive Accessories - Ford - F-150 2001
Printers & Accessories - Xerox - WorkCentre Pro C2128~C2636~C3545
Speaker Systems - JBL - Xtreme
1981-1995--Chrysler--Lebaron--4 Cylinders D 2.2L TBI SOHC--31034802
1981-1995--Chrysler--Lebaron--4 Cylinders D 2.2L TBI SOHC--31095601
Skoda - Auto - skoda-karoq-2017-owner-s-manual-110437
Speakers & Audio Accessories - Dual - Dual - SX652 ~ SX692
1981-1995--Chrysler--Lebaron--4 Cylinders J 2.5L MFI Turbo SOHC--31006702
Power Tools & Accessories - STIHL - STIHL Trimmer FS 40, FS 50
Sewing Machine - Brother - Brother BAS-511
Skoda - Auto - skoda-karoq-2017-vodic-za-korisnike-110442
Ducati - Motorcycle - Ducati_M620_ie_Parts_2002
Sewing Machine - Brother - Brother DB2-B798
Printers & Accessories - Epson - Stylus Pro 9000
DJ Equipment - Kramer AV - VM-4HDT
Printers & Accessories - Epson - WorkForce 40
Summary of Content
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. (consult a qualified technician for instructions) • Avoid installing the amplifier where it would be subject to high temperatures, such as from direct sunlight, or where it would be subject to dust, dirt or excessive vibration. • Use extreme caution when drilling holes to avoid damaging fuel lines or existing vehicle wiring. • All amplifier installations require power, signal and speaker wires (not included). • An amplifier installation kit (sold separately) is highly recommended to facilitate the installation. Consult your dealer for recommendations. Mounting Location • Choose a mounting location for the amplifier. Suggested locations include under a seat or in the trunk. • The amplifier can be mounted horizontal (recommended) or vertical. For optimum performance, make sure to provide at least 1" of space to around all sides. Do not mount the amplifier under carpets or where airflow is restricted. • Do not install the amplifier where it may be exposed to moisture. • The optimum mounting location varies between vehicles. Remember to test all amplifier functions before completing the final mounting procedure. TYPICAL MOUNTING METHOD 2 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 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. 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) outputs. CAUTION • Never run any wires underneath or outside the vehicle. 3 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. Make sure to use the same size power and ground wire. DPA250 15 amp ATO x 1 DPA250 10 awg 5 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. (2 ohms minimum) (4 ohms minimum) Input Signal Connections Low Level Input (RCA) Low level (RCA) input signal is preferred for best performance. If your head unit does not include low level (RCA) outputs, an optional high-to-low adapter may be required (sold separately). 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. 6 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. Repeat for all input level controls. The crossover is used to filter out frequencies above or below a certain point. Choose LPF when using the amplifier with subwoofers, or FULL when using with coaxial-type speakers. Note: Choose FULL 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 from 50Hz ~ 300Hz. Bass Boost This control provides additional boost @ 45Hz when used with subwoofers. Adjust this control with caution - as improper use can damage speakers! Treble Boost This control provides additional boost @ 5kHz when used with subwoofers. Adjust this control with caution - as improper use can damage speakers! LED Indicators The POWER LED indicator illuminates green during normal operation. The PROTECT LED indicator illuminates red when the amplifier detects a fault. 7 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. 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. 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. 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 found via www.dualav. com. 8 What to do? 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. 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 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: • Call us toll-free at 1-866-382-5476 • E-mail us at cs@dualav.com 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. 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 1.97”(D) Typical installation dimensions: 10”(L) x 10”(W) x 3”(D) Design and specifications subject to change without notice. 9 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 or damaged Unit blows fuse(s) Engine noise Input signal not connected Check low level inputs for proper connection Incorrect fuse rating +12V wire touching chassis ground Speaker(s) defective or damaged Bad ground connection Use fuse(s) with correct rating Check for pinched wire Check/replace speaker(s) Make sure amplifier ground wire is connected to clean bare metal Re-route RCA cables from existing high current wiring Insulate all bare speaker wires from each other and chassis ground Check/replace speaker(s) Signal ground loop or RFI (radio frequency interference) Protect LED illuminates One or more speaker wires touching each red other or touching chassis ground (protect mode) Speaker(s) defective or damaged internally (shorted) Speaker load less than 2 ohms (stereo) Speaker load less than 4 ohms (bridged) Distorted audio output Incorrect input signal type or input level too high Low audio output Incorrect input signal type or input level too low Weak bass 10 Replace fuse(s) Check connections at speakers Increase volume level at head unit Insulate all bare speaker wires from each other and chassis ground Check/replace speaker(s) Speaker(s) are wired out of phase Adjust speaker load - amplifier will not operate at less than 4 ohms when bridged Check connections and reduce/adjust input level Check connections and increase/adjust input level Check (+) and (-) speaker connections (Observe correct polarity) DPA250 OPERATION Notes 11 Dual Electronics Corp. Toll Free: 1-866-382-5476 www.dualav.com ©2012 Dual Electronics Corp. NSA0412-V01