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APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 1
Owner’s Manual
Manuel de L'utilisateur
Manual del Propietario
APX2181
APX4361
DPX2251
DPX1851
DPX11551
APX AND DPX AMPLIFIERS
AMPLIFICATEURS APX & DPX
AMPLIFICADORES APX Y DPX
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English APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 2 Thank you for purchasing this Clarion product. Please read this owner’s manual in its entirety before operating this equipment. After reading this manual, keep it handy, such as in your glove compartment. Save your sales receipt. The warranty at the end of this manual and your sales receipt are essential for warranty service. FCC Approval This equipment has been tested and found to comply with the limits for a Class B digital device, pur
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APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 3 Contents 1. FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3. CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4. OPERATIONS . . . . . . . . . . . . . . . . . . . .
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English APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 4 1. FEATURES The Clarion APX2181, APX4361, DPX2251, DPX1851 and DPX11551 amplifiers fit a variety of system configurations and provide these features: IVS - Input Voltage Selector with three sensitivity ranges on the gain control for the ability to connect to almost any source. PFS - Precise Frequency Selector, a detented crossover frequency adjustment. Ground loop isolation for RCA inputs. Full frequency response with low distortion a
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APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 5 2. PRECAUTIONS Do not operate this product in ways other than those described in this manual. Do not disassemble or modify this product. Do not pour liquid or poke foreign objects into the unit. Water and humidity will damage internal circuitry. If the unit becomes wet, turn off all power and ask your authorized Clarion dealer to clean or service the unit. Failure to observe these precautions may damage your car or the amplifier, and may void
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English APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 6 3. CONTROLS 7 1 24 6 3 8 9 5 11 10 APX2181 signal connections and audio adjustments 77 1 33 89 8 9 10 42 4 6 12 5 11 APX4361 signal connections and audio adjustments 1. RCA Input Jacks 7. SLI (Speaker Level Inputs) 2. IVS (Input Voltage Selector) 8. Crossover Frequency Multiplier 3. PFS (Precise Frequency Selector) 9. Crossover Function Switch 4. Gain Control 10. RCA Input/High Input Switch 5. Output Mode Switch 11. Status Indicator Lights 6.
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APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 7 10 11 51 82 6 4 3 9 16 17 DPX2251 signal connections and audio adjustments 13 15 12 51 8 2 6 4 3 16 14 7 17 DPX1851 and DPX11551 signal connections and audio adjustments 1. RCA Input Jacks 10. Crossover Function Switch 2. IVS (Input Voltage Selector) 11. Output Mode Switch 3. PFS (Precise Frequency Selector) 12. Subsonic Filter Frequency Selector 4. BBC (Bass Boost Control) 13. Slave RCA Jack 5. SLI (Speaker Level Inputs) 14. RCA Output Jack 6. Gain C
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English APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 8 4. OPERATIONS Selecting input voltage APX and DPX amplifiers accommodate a wide range of signal input voltages (0.2V to 8V). This wide range is split up into three ranges, which are accessible through switches located in the “Gain” area of the amplifier. 0.2V-0.6V selects an input sensitivity range between 200mV and 600mV. 0.6-2V selects an input sensitivity range between 600mV and 2V. 2V-8V selects an input sensitivity range between 2V
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APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 9 Matching subwoofer output to mid-range speakers The DPX1851 and DPX11551 feature a polarity control switch for reversing the polarity of the output signal. This can be useful when matching the acoustic output of your subwoofers to the output of your mid-range speakers. Connecting directly to a head unit The amps provide connections directly to a head unit without a pre-amp output, such as a factory-installed head unit. WARNING! When using the speaker
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English APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 10 5. INSTALLATION AND WIRING Read these instructions and the following precautions carefully. What is included in the box In addition to this manual, the box contains: Amplifier High-level speaker input harness Mounting precautions If you lack the necessary skills, do not install the amplifier yourself. See your authorized Clarion Dealer for installation recommendations. This unit is exclusively for vehicles with a negative ground, 12V p
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APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 11 Always use great care when attaching anything to a vehicle! Check clearances on all sides of the planned installation before drilling any holes or installing any screws. Make sure the holes you plan to drill will not cut into the fuel tank, fuel lines, brake lines (under the chassis) or electrical wiring. Don’t guess. Check first. Wiring precautions Read all wiring precautions. If you are not sure of the connections, contact your authorized Clari
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English APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 12 Cables Whenever possible, route power wire and signal wire on opposite sides of the vehicle. This prevents the signal cables from picking up electrically radiated noise. Protect all wire from damage. Where a power wire passes through the fire wall or near exposed metal edges, protect the wire with a rubber or plastic grommet. Use wire loom where possible for further protection. Extra cable can cause signal loss and act as an antenna for
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APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 13 Power and speaker connections The rear panel contains the power and speaker ports. 67 5 8 3 4 APX2181 power and speaker connections 67 5 82 1 10 9 APX4361 power and speaker connections 1. Left front speaker output 6. Ground input 2. Right front speaker output 7. Battery 12V input 3. Left speaker output 8. Fuses 4. Right speaker output 9. Left rear speaker output 5. Remote turn-on input 10. Right rear speaker output 13 English
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English APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 14 57 4 3 DPX1851 power and speaker connections 57 4 3 DPX11551 power and speaker connections 12 57 4 6 DPX2251 power and speaker connections 1. Left rear speaker output 5. Ground input 2. Right rear speaker output 6. Fuses 3. Mono speaker output 7. Battery 12V connection 4. Remote turn-on connection 14
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APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 15 Applications Mono subwoofer system (APX2181 and APX4361) In this application, the rear channels are bridged for mono operation to drive a subwoofer while the front channels are available to drive a set of full-range speakers. Mono Amp configuration (APX2181) Set crossover mode to LP Set input mode switch to L + R (Mono) Set crossover frequency to ~80Hz Fine-tune crossover frequency to suit musical tastes and performances 2 Ω min stereo / 4Ω
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English APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 16 Two-channel full-range or subwoofer system (APX2181) In this application, the APX2181 is used to drive two speakers. Subwoofers Full-range co-axial or Component speakers Subwoofer in stereo Set crossover mode switch to LP Set crossover frequency to ~80Hz Fine-tune as required 2 Ω min stereo / 4Ω min mono Full-range speakers or components in stereo Set crossover mode switch to OFF Components speakers in stereo with separate subwoofer
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APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 17 Four-channel high-power system (APX4361) In this application, the APX4361 is used as a four-channel amplifier to drive four speakers in stereo with fader control. Front Left Rear Right Full range Full range Front Right Rear Left Full range Full range Four speakers in stereo - full range Set crossover mode switch to OFF Four speakers in stereo - filtered If the front or rear speakers are smaller than 5.25”, you may decide to enable the crossover. T
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English APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 18 2-Ohm subwoofer system (DPX1851/DPX11551) This application shows a DPX1851 or DPX11551 driving a pair of DVC 2 Ohm subwoofers. DVC 2 Ohm Subwoofer DVC 2 Ohm Subwoofer DPX1851/DPX11551 speaker configuration The units produce maximum power when connected to a 2 Ohm load. Under no circumstance should loads under 2 Ohms be used with these units. WARNING Do not connect a load less than 2-Ohm as permanent damage may occur and the warranty will be n
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APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 19 DPX1851 and DPX11551 stackable configurations In this mode, the master amp’s front-panel controls apply to all amplifiers. For example, setting the crossover frequency on the master sets it on all slaves. This works for all front-panel controls. Multiple amplifiers can be daisy-chained together. For example, if you had six DPX1851s in a show car, you could control all of them from one master unit (and one remote). The following describes the configur
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English APX_DPX Amps.qxd 2/6/2008 11:53 AM Page 20 7. Turn the volume back down slightly. 8. Slowly increase the gain control (clockwise). Stop when you hear a slight audio distortion. When the gain is properly set, you should achieve maximum undistorted output with the volume turned up all the way, not half way. If an oscilloscope is available, monitor the output of the amplifier with the scope, watching for clipping of the waveform. Set the gain so that only minor clipping occurs. Adjusting
